ant -f C:\\x3d-code\\www.web3d.org\\x3d\\stylesheets\\python -DXmaxwarns=1000 build.examples
build.package.x3d.py:
X3D stylesheets.BuildX3dPythonPackageFromX3duom.saxon:
Following output is for X3D version 4.0 in X3dPackageDirectory=python
Result: created files C:\x3d-code\www.web3d.org\x3d\stylesheets/python/x3d.py and __init__.py
PYTHONPATH=C:\x3d-code\www.web3d.org\x3d\stylesheets\python
BuildX3dPythonPackageFromX3duom.saxon complete.
set.local.PYTHONPATH:
local.PYTHONPATH=C:\x3d-code\www.web3d.org\x3d\stylesheets\python
test.x3d.py:
Loading active PYTHONPATH x3d.py package in python to check for correctness...
x3d.py package 4.0.64.4 loaded, have fun with X3D Graphics!
build:
versions:
X3D stylesheets.versions:
  ANT_HOME=C:\apache-ant-1.10.12
 JAVA_HOME=C:\Program Files\Java\openjdk\jdk-19.0.2
PYTHONHOME=${env.PYTHONHOME}
PYTHONPATH=C:\x3d-code\www.web3d.org\x3d\stylesheets\python
Check CLASSPATH for X3DJSAIL X3DJSAIL.4.0.full.jar or X3DJSAIL.4.0.classes.jar
CLASSPATH=C:\x3d-code\www.web3d.org\x3d\stylesheets\java\jars\X3DJSAIL.4.0.full.jar;
javac source/target      $java.source=16
                         $java.target=16
Java/JVM version    $ant.java.version=19
Java/JVM detail version $java.version=19.0.2
Saxon directory            $saxon.dir=C:\x3d-code\www.web3d.org\x3d\stylesheets\java\lib
Saxon jar                  $saxon.jar=saxon-he-11.4.jar
Ant version              $ant.version=Apache Ant(TM) version 1.10.12 compiled on October 13 2021

ant -version
Apache Ant(TM) version 1.10.12 compiled on October 13 2021
java -version
openjdk version "19.0.2" 2023-01-17
OpenJDK Runtime Environment (build 19.0.2+7-44)
OpenJDK 64-Bit Server VM (build 19.0.2+7-44, mixed mode, sharing)
python -version
Python 3.11.1
saxon -? help
SaxonJ-HE 11.4 from Saxonica
Usage: see http://www.saxonica.com/documentation/index.html#!using-xsl/commandline
Format: net.sf.saxon.Transform options params
Options available: -? -a -catalog -config -cr -diag -dtd -ea -expand -explain -export -ext -im -init -it -jit -json -l -lib -license -nogo -now -ns -o -opt -or -outval -p -quit -r -relocate -repeat -s -sa -scmin -strip -t -T -target -TB -threads -TJ -Tlevel -Tout -TP -traceout -tree -u -val -versionmsg -warnings -x -xi -xmlversion -xsd -xsdversion -xsiloc -xsl -y --?
Use -XYZ:? for details of option XYZ
Params: 
  param=value           Set stylesheet string parameter
  +param=filename       Set stylesheet document parameter
  ?param=expression     Set stylesheet parameter using XPath
  !param=value          Set serialization parameter
Check for node.js installation from https://nodejs.org
v18.13.0
X3DJSAIL.4.0.full.jar -version
X3DJSAIL version date: 29 January 2023
Configuration settings:  https://savage.nps.edu/Savage/developers.html
===========================================
examples:
set.local.PYTHONPATH:
local.PYTHONPATH=C:\x3d-code\www.web3d.org\x3d\stylesheets\python
test.x3d.py:
Loading active PYTHONPATH x3d.py package in python to check for correctness...
x3d.py package 4.0.64.4 loaded, have fun with X3D Graphics!
===========================================
set.local.PYTHONPATH:
local.PYTHONPATH=C:\x3d-code\www.web3d.org\x3d\stylesheets\python
examples.SmokeTests:
Run PythonX3dSmokeTests.py in python using local build of Python x3d package
  python examples/PythonX3dSmokeTests.py
===================
Importing local development copy of X3D package:
  from x3d import *
x3d.py package 4.0.64.4 loaded, have fun with X3D Graphics!
===================
PythonX3dSmokeTests:

- - - - - - - - - -
Access types: initializeOnly inputOutput inputOnly outputOnly
- - - - - - - - - -
SFBool.NAME()         = SFBool
SFBool.DEFAULT_VALUE()= False
SFBool.ARRAY_TYPE()   = False
SFBool.TUPLE_SIZE()   = 1
SFBool.REGEX_PYTHON() = \s*(true|false|True|False)\s*
SFBool.REGEX_XML()    = \s*(true|false)\s*
SFBool.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#SFBool

SFBool X3DTypeError exception correctly thrown when test.value = 'plain text'
SFBool fixBoolean(test)= False type=<class 'bool'>
SFBool test       = False
SFBool value type = <class 'bool'>
isinstance SFBool = True
SFBool test.value = False
SFBool test.XML() = false
SFBool test.VRML()= FALSE
SFBool test.JSON()= false
SFBool regex match= <re.Match object; span=(0, 5), match='False'>
SFBool     isValidSFBool(test)=True
SFBool assertValidSFBool(test) # execution continues if no assertion failure occurs

MFBool.NAME()         = MFBool
MFBool.DEFAULT_VALUE()= []
MFBool.ARRAY_TYPE()   = True
MFBool.TUPLE_SIZE()   = 1
MFBool.REGEX_PYTHON() = \s*\[?\s*((true|false|True|False)\s*,?\s*)*\]?\s*
MFBool.REGEX_XML()    = \s*((true|false)\s*,?\s*)*
MFBool.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#MFBool

MFBool X3DTypeError exception correctly thrown when test.value = 'plain text'
MFBool fixBoolean(test)= [True, False, True, False, True, True, False] type=<class 'list'>
MFBool test       = [True, False, True, False, True, True, False]
MFBool value type = <class 'list'>
isinstance MFBool = True
MFBool test.value = [True, False, True, False, True, True, False]
MFBool test.XML() = true false true false true true false
MFBool test.VRML()= TRUE FALSE TRUE FALSE TRUE TRUE FALSE
MFBool test.JSON()= true false true false true true false
MFBool regex match= <re.Match object; span=(0, 45), match='[True, False, True, False, True, True, False]'>
MFBool     isValidMFBool(test)=True
MFBool assertValidMFBool(test) # execution continues if no assertion failure occurs
MFBool bool(test)=True, len(test)=7
MFBool test downcast legal singleton: SFBool(MFBool([True]))=True, type=<class 'x3d.SFBool'>
MFBool test   upcast legal SF value:  MFBool(SFBool(False))=[False], type=<class 'x3d.MFBool'>
- - - - - - - - - -
SFInt32.NAME()         = SFInt32
SFInt32.DEFAULT_VALUE()= 0
SFInt32.ARRAY_TYPE()   = False
SFInt32.TUPLE_SIZE()   = 1
SFInt32.REGEX_PYTHON() = \s*[+-]?(0|[1-9][0-9]*)([Ee][+-]?[0-9]+)?\s*
SFInt32.REGEX_XML()    = \s*[+-]?(0|[1-9][0-9]*)([Ee][+-]?[0-9]+)?\s*
SFInt32.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#SFInt32
*** string value provided, value=111, int(value)=111
SFInt32 X3DTypeError exception correctly thrown when test.value = 'plain text'
SFInt32 isZeroToOne        (-1)  =False, isZeroToOne        (0)  =True,  isZeroToOne        (+1) =True
SFInt32 isNonNegative      (-1)  =False, isNonNegative      (0)  =True,  isNonNegative      (+1) =True
SFInt32 isPositive         (-1)  =False, isPositive         (0)  =False, isPositive         (+1) =True
SFInt32 isGreaterThan      (-1,0)=False, isGreaterThan      (0,0)=False, isGreaterThan      (1,0)=True
SFInt32 isGreaterThanEquals(-1,0)=False, isGreaterThanEquals(0,0)=True,  isGreaterThanEquals(1,0)=True
SFInt32 isLessThan         (-1,0)=True,  isLessThan         (0,0)=False, isLessThan         (1,0)=False
SFInt32 isLessThanEquals   (-1,0)=True,  isLessThanEquals   (0,0)=True,  isLessThanEquals   (1,0)=False
SFInt32 test       = 111
SFInt32 value type = <class 'int'>
isinstance SFInt32 = True
SFInt32 test.value = 111
SFInt32 test.XML() = 111
SFInt32 test.VRML()= 111
SFInt32 test.JSON()= 111
SFInt32 regex match= <re.Match object; span=(0, 3), match='111'>
SFInt32     isValidSFInt32(test)=True
SFInt32 assertValidSFInt32(test) # execution continues if no assertion failure occurs

MFInt32.NAME()         = MFInt32
MFInt32.DEFAULT_VALUE()= []
MFInt32.ARRAY_TYPE()   = True
MFInt32.TUPLE_SIZE()   = 1
MFInt32.REGEX_PYTHON() = \s*\[?\s*([+-]?(0|[1-9][0-9]*)([Ee][+-]?[0-9]+)?\s*,?\s*)*\]?\s*
MFInt32.REGEX_XML()    = \s*([+-]?(0|[1-9][0-9]*)([Ee][+-]?[0-9]+)?\s*,?\s*)*
MFInt32.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#MFInt32
MFInt32 ValueError exception correctly thrown when test.value = 'plain text'
MFInt32 test       = [11, 22, 33, 44, -55, -66, 77, -88, 99]
MFInt32 value type = <class 'list'>
isinstance MFInt32 = True
MFInt32 test.value = [11, 22, 33, 44, -55, -66, 77, -88, 99]
MFInt32 test.XML() = 11 22 33 44 -55 -66 77 -88 99
MFInt32 test.VRML()= [11 22 33 44 -55 -66 77 -88 99]
MFInt32 test.JSON()= 11 22 33 44 -55 -66 77 -88 99
MFInt32 regex match= <re.Match object; span=(0, 39), match='[11, 22, 33, 44, -55, -66, 77, -88, 99]'>
MFInt32     isValidMFInt32(test)=True
MFInt32 assertValidMFInt32(test) # execution continues if no assertion failure occurs
MFInt32 bool(test)=True, len(test)=9
downcasting by dereferencing simple-list value=[1], type=<class 'x3d.MFInt32'> as 1
SFInt32 test downcast legal singleton: SFInt32(MFInt32([1]))=1, type=<class 'x3d.SFInt32'>
MFInt32 test   upcast legal SF value:  MFInt32(SFInt32(2))=2, type=<class 'x3d.MFInt32'>
- - - - - - - - - -
SFFloat.NAME()         = SFFloat
SFFloat.DEFAULT_VALUE()= 0.0
SFFloat.ARRAY_TYPE()   = False
SFFloat.TUPLE_SIZE()   = 1
SFFloat.REGEX_PYTHON() = \s*([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*
SFFloat.REGEX_XML()    = \s*([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*
SFFloat.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#SFFloat
*** string value provided, value=44, float(value)=44.0
SFFloat X3DTypeError exception correctly thrown when test.value = 'plain text'
SFFloat test       = 44.0
SFFloat value type = <class 'float'>
isinstance SFFloat = True
SFFloat test.value = 44.0
SFFloat test.XML() = 44.0
SFFloat test.VRML()= 44.0
SFFloat regex match= <re.Match object; span=(0, 4), match='44.0'>
SFFloat     isValidSFFloat(test)=True
SFFloat assertValidSFFloat(test) # execution continues if no assertion failure occurs

MFFloat.NAME()         = MFFloat
MFFloat.DEFAULT_VALUE()= []
MFFloat.ARRAY_TYPE()   = True
MFFloat.TUPLE_SIZE()   = 1
MFFloat.REGEX_PYTHON() = \s*\[?\s*(([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*,?\s*)*\]?\s*
MFFloat.REGEX_XML()    = \s*(([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*,?\s*)*
MFFloat.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#MFFloat
MFFloat ValueError exception correctly thrown when test.value = 'plain text'
MFFloat test       = [0, 1, 2]
MFFloat value type = <class 'list'>
isinstance MFFloat = True
MFFloat test.value = [0, 1, 2]
MFFloat test.XML() = 0 1 2
MFFloat test.VRML()= [0 1 2]
MFFloat test.JSON()= 0 1 2
MFFloat regex match= <re.Match object; span=(0, 9), match='[0, 1, 2]'>
MFFloat     isValidMFFloat(test)=True
MFFloat assertValidMFFloat(test) # execution continues if no assertion failure occurs
- - - - - - - - - -
SFDouble.NAME()         = SFDouble
SFDouble.DEFAULT_VALUE()= 0.0
SFDouble.ARRAY_TYPE()   = False
SFDouble.TUPLE_SIZE()   = 1
SFDouble.REGEX_PYTHON() = \s*([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*
SFDouble.REGEX_XML()    = \s*([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*
SFDouble.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#SFDouble
*** string value provided, value=66, float(value)=66.0
SFDouble X3DTypeError exception correctly thrown when test.value = 'plain text'
SFDouble test       = 66.0
SFDouble value type = <class 'float'>
isinstance SFDouble = True
SFDouble test.value = 66.0
SFDouble test.XML() = 66.0
SFDouble test.VRML()= 66.0
SFDouble test.JSON()= 66.0
SFDouble regex match= <re.Match object; span=(0, 4), match='66.0'>
SFDouble     isValidSFDouble(test)=True
SFDouble assertValidSFDouble(test) # execution continues if no assertion failure occurs

MFDouble.NAME()         = MFDouble
MFDouble.DEFAULT_VALUE()= []
MFDouble.ARRAY_TYPE()   = True
MFDouble.TUPLE_SIZE()   = 1
MFDouble.REGEX_PYTHON() = \s*\[?\s*(([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*,?\s*)*\]?\s*
MFDouble.REGEX_XML()    = \s*(([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*,?\s*)*
MFDouble.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#MFDouble
MFDouble ValueError exception correctly thrown when test.value = 'plain text'
MFDouble test       = [0, 1, 2]
MFDouble value type = <class 'list'>
isinstance MFDouble = True
MFDouble test.value = [0, 1, 2]
MFDouble test.XML() = 0 1 2
MFDouble test.VRML()= [0 1 2]
MFDouble test.JSON()= 0 1 2
MFDouble regex match= <re.Match object; span=(0, 9), match='[0, 1, 2]'>
MFDouble     isValidMFDouble(test)=True
MFDouble assertValidMFDouble(test) # execution continues if no assertion failure occurs
- - - - - - - - - -
SFString.NAME()         = SFString
SFString.DEFAULT_VALUE()= ""
SFString.ARRAY_TYPE()   = False
SFString.TUPLE_SIZE()   = 1
SFString.REGEX_PYTHON() = (\s|\S)*
SFString.REGEX_XML()    = (\s|\S)*
SFString.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#SFString
SFString test       = 'test setter'
SFString value type = <class 'str'>
isinstance SFString = True
SFString test.value = test setter
SFString test.XML() = test setter
SFString test.VRML()= "test setter"
SFString test.JSON()= test setter
SFString regex match= <re.Match object; span=(0, 11), match='test setter'>
SFString     isValidSFString(test)=True
SFString assertValidSFString(test) # execution continues if no assertion failure occurs

MFString.NAME()         = MFString
MFString.DEFAULT_VALUE()= []
MFString.ARRAY_TYPE()   = True
MFString.TUPLE_SIZE()   = 1
MFString.REGEX_PYTHON() = \s*\[?(\s|\S)*\]?\s*
MFString.REGEX_XML()    = (\s|\S)*
MFString.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#MFString
MFString test       = [test, constructor, with'apostrophe]
MFString value type = <class 'list'>
isinstance MFString = True
MFString test.value = ['test', 'constructor', "with'apostrophe"]
MFString test.XML() = "test" "constructor" "with&apos;apostrophe"
MFString test.VRML()= ["test" "constructor" "with'apostrophe"]
MFString test.JSON()= "test" "constructor" "with'apostrophe"
MFString regex match= <re.Match object; span=(0, 42), match='[\'test\', \'constructor\', "with\'apostrophe"]'>
MFString     isValidMFString(test)=True
MFString assertValidMFString(test) # execution continues if no assertion failure occurs
- - - - - - - - - -
SFVec2f.NAME()         = SFVec2f
SFVec2f.DEFAULT_VALUE()= (0.0, 0.0)
SFVec2f.ARRAY_TYPE()   = False
SFVec2f.TUPLE_SIZE()   = 2
SFVec2f.REGEX_PYTHON() = \s*\(\s*(([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\,?\s*){1}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\)\s*
SFVec2f.REGEX_XML()    = \s*(([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s+){1}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*
SFVec2f.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#SFVec2f
SFVec2f X3DTypeError exception correctly thrown when test.value = 'plain text'
SFVec2f test       = (1, 2)
SFVec2f value type = <class 'tuple'>
isinstance SFVec2f = True
SFVec2f test.value = (1, 2)
SFVec2f test.XML() = 1 2
SFVec2f test.VRML()= 1 2
SFVec2f test.JSON()= 1 2
SFVec2f regex match= <re.Match object; span=(0, 6), match='(1, 2)'>
SFVec2f     isValidSFVec2f(test)=True
SFVec2f assertValidSFVec2f(test) # execution continues if no assertion failure occurs

MFVec2f.NAME()         = MFVec2f
MFVec2f.DEFAULT_VALUE()= []
MFVec2f.ARRAY_TYPE()   = True
MFVec2f.TUPLE_SIZE()   = 2
MFVec2f.REGEX_PYTHON() = \s*\[?\s*(\s*\(?\s*((([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\,?\s*){1}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*,?\s*)*\)?\s*\,?)*\s*\]?\s*
MFVec2f.REGEX_XML()    = \s*((([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s+){1}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*,?\s*)*
MFVec2f.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#MFVec2f
MFVec2f ValueError exception correctly thrown when test.value = 'plain text'
MFVec2f test       = (1, -2)
MFVec2f value type = <class 'tuple'>
isinstance MFVec2f = True
MFVec2f test.value = (1, -2)
MFVec2f test.XML() = 1 -2
MFVec2f test.VRML()= [1 -2]
MFVec2f test.JSON()= 1 -2
MFVec2f regex match= <re.Match object; span=(0, 7), match='(1, -2)'>
MFVec2f     isValidMFVec2f(test)=True
MFVec2f assertValidMFVec2f(test) # execution continues if no assertion failure occurs
- - - - - - - - - -
SFVec2d.NAME()         = SFVec2d
SFVec2d.DEFAULT_VALUE()= (0.0, 0.0)
SFVec2d.ARRAY_TYPE()   = False
SFVec2d.TUPLE_SIZE()   = 2
SFVec2d.REGEX_PYTHON() = \s*\(\s*(([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\,?\s*){1}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\)\s*
SFVec2d.REGEX_XML()    = \s*(([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s+){1}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*
SFVec2d.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#SFVec2d
SFVec2d X3DTypeError exception correctly thrown when test.value = 'plain text'
SFVec2d test       = (1, 2)
SFVec2d value type = <class 'tuple'>
isinstance SFVec2d = True
SFVec2d test.value = (1, 2)
SFVec2d test.XML() = 1 2
SFVec2d test.VRML()= 1 2
SFVec2d test.JSON()= 1 2
SFVec2d regex match= <re.Match object; span=(0, 6), match='(1, 2)'>
SFVec2d     isValidSFVec2d(test)=True
SFVec2d assertValidSFVec2d(test) # execution continues if no assertion failure occurs

MFVec2d.NAME()         = MFVec2d
MFVec2d.DEFAULT_VALUE()= []
MFVec2d.ARRAY_TYPE()   = True
MFVec2d.TUPLE_SIZE()   = 2
MFVec2d.REGEX_PYTHON() = \s*\[?\s*(\s*\(?\s*((([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\,?\s*){1}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*,?\s*)*\)?\s*\,?)*\s*\]?\s*
MFVec2d.REGEX_XML()    = \s*((([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s+){1}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*,?\s*)*
MFVec2d.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#MFVec2d
MFVec2d ValueError exception correctly thrown when test.value = 'plain text'
MFVec2d test       = ((0, 1), (2, 3))
MFVec2d value type = <class 'tuple'>
isinstance MFVec2d = True
MFVec2d test.value = ((0, 1), (2, 3))
MFVec2d test.XML() = 0 1 2 3
MFVec2d test.VRML()= [0 1 2 3]
MFVec2d test.JSON()= 0 1 2 3
MFVec2d regex match= <re.Match object; span=(0, 16), match='((0, 1), (2, 3))'>
MFVec2d     isValidMFVec2d(test)=True
MFVec2d assertValidMFVec2d(test) # execution continues if no assertion failure occurs
- - - - - - - - - -
SFVec3f.NAME()         = SFVec3f
SFVec3f.DEFAULT_VALUE()= (0.0, 0.0, 0.0)
SFVec3f.ARRAY_TYPE()   = False
SFVec3f.TUPLE_SIZE()   = 3
SFVec3f.REGEX_PYTHON() = \s*\(\s*(([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\,?\s*){2}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\)\s*
SFVec3f.REGEX_XML()    = \s*(([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s+){2}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*
SFVec3f.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#SFVec3f
SFVec3f X3DTypeError exception correctly thrown when test.value = 'plain text'
SFVec3f test       = (1, 2, 3)
SFVec3f value type = <class 'tuple'>
isinstance SFVec3f = True
SFVec3f test.value = (1, 2, 3)
SFVec3f test.XML() = 1 2 3
SFVec3f test.VRML()= 1 2 3
SFVec3f test.JSON()= 1 2 3
SFVec3f regex match= <re.Match object; span=(0, 9), match='(1, 2, 3)'>
SFVec3f     isValidSFVec3f(test)=True
SFVec3f assertValidSFVec3f(test) # execution continues if no assertion failure occurs

MFVec3f.NAME()         = MFVec3f
MFVec3f.DEFAULT_VALUE()= []
MFVec3f.ARRAY_TYPE()   = True
MFVec3f.TUPLE_SIZE()   = 3
MFVec3f.REGEX_PYTHON() = \s*\[?\s*(\s*\(?\s*((([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\,?\s*){2}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*,?\s*)*\)?\s*\,?)*\s*\]?\s*
MFVec3f.REGEX_XML()    = \s*((([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s+){2}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*,?\s*)*
MFVec3f.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#MFVec3f
MFVec3f ValueError exception correctly thrown when test.value = 'plain text'
MFVec3f test       = [(0, 1, 2), (3, 4, 5)]
MFVec3f value type = <class 'list'>
isinstance MFVec3f = True
MFVec3f test.value = [(0, 1, 2), (3, 4, 5)]
MFVec3f test.XML() = 0 1 2 3 4 5
MFVec3f test.VRML()= [0 1 2 3 4 5]
MFVec3f test.JSON()= 0 1 2 3 4 5
MFVec3f regex match= <re.Match object; span=(0, 22), match='[(0, 1, 2), (3, 4, 5)]'>
MFVec3f     isValidMFVec3f(test)=True
MFVec3f assertValidMFVec3f(test) # execution continues if no assertion failure occurs
- - - - - - - - - -
SFVec3d.NAME()         = SFVec3d
SFVec3d.DEFAULT_VALUE()= (0.0, 0.0, 0.0)
SFVec3d.ARRAY_TYPE()   = False
SFVec3d.TUPLE_SIZE()   = 3
SFVec3d.REGEX_PYTHON() = \s*\(\s*(([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\,?\s*){2}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\)\s*
SFVec3d.REGEX_XML()    = \s*(([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s+){2}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*
SFVec3d.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#SFVec3d
SFVec3d X3DTypeError exception correctly thrown when test.value = 'plain text'
SFVec3d test       = (1, 2, 3)
SFVec3d value type = <class 'tuple'>
isinstance SFVec3d = True
SFVec3d test.value = (1, 2, 3)
SFVec3d test.XML() = 1 2 3
SFVec3d test.VRML()= 1 2 3
SFVec3d test.JSON()= 1 2 3
SFVec3d regex match= <re.Match object; span=(0, 9), match='(1, 2, 3)'>
SFVec3d     isValidSFVec3d(test)=True
SFVec3d assertValidSFVec3d(test) # execution continues if no assertion failure occurs

MFVec3d.NAME()         = MFVec3d
MFVec3d.DEFAULT_VALUE()= []
MFVec3d.ARRAY_TYPE()   = True
MFVec3d.TUPLE_SIZE()   = 3
MFVec3d.REGEX_PYTHON() = \s*\[?\s*(\s*\(?\s*((([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\,?\s*){2}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*,?\s*)*\)?\s*\,?)*\s*\]?\s*
MFVec3d.REGEX_XML()    = \s*((([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s+){2}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*,?\s*)*
MFVec3d.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#MFVec3d
MFVec3d ValueError exception correctly thrown when test.value = 'plain text'
MFVec3d test       = [(0, 1, 2), (3, 4, 5)]
MFVec3d value type = <class 'list'>
isinstance MFVec3d = True
MFVec3d test.value = [(0, 1, 2), (3, 4, 5)]
MFVec3d test.XML() = 0 1 2 3 4 5
MFVec3d test.VRML()= [0 1 2 3 4 5]
MFVec3d test.JSON()= 0 1 2 3 4 5
MFVec3d regex match= <re.Match object; span=(0, 22), match='[(0, 1, 2), (3, 4, 5)]'>
MFVec3d     isValidMFVec3d(test)=True
MFVec3d assertValidMFVec3d(test) # execution continues if no assertion failure occurs
- - - - - - - - - -
SFVec4f.NAME()         = SFVec4f
SFVec4f.DEFAULT_VALUE()= (0.0, 0.0, 0.0, 1.0)
SFVec4f.ARRAY_TYPE()   = False
SFVec4f.TUPLE_SIZE()   = 4
SFVec4f.REGEX_PYTHON() = \s*\(\s*(([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\,?\s*){3}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\)\s*
SFVec4f.REGEX_XML()    = \s*(([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s+){3}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*
SFVec4f.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#SFVec4f
SFVec4f X3DTypeError exception correctly thrown when test.value = 'plain text'
SFVec4f test       = (1, 2, 3, 4)
SFVec4f value type = <class 'tuple'>
isinstance SFVec4f = True
SFVec4f test.value = (1, 2, 3, 4)
SFVec4f test.XML() = 1 2 3 4
SFVec4f test.VRML()= 1 2 3 4
SFVec4f test.JSON()= 1 2 3 4
SFVec4f regex match= <re.Match object; span=(0, 12), match='(1, 2, 3, 4)'>
SFVec4f     isValidSFVec4f(test)=True
SFVec4f assertValidSFVec4f(test) # execution continues if no assertion failure occurs

MFVec4f.NAME()         = MFVec4f
MFVec4f.DEFAULT_VALUE()= []
MFVec4f.ARRAY_TYPE()   = True
MFVec4f.TUPLE_SIZE()   = 4
MFVec4f.REGEX_PYTHON() = \s*\[?\s*(\s*\(?\s*((([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\,?\s*){3}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*,?\s*)*\)?\s*\,?)*\s*\]?\s*
MFVec4f.REGEX_XML()    = \s*((([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s+){3}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*,?\s*)*
MFVec4f.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#MFVec4f
MFVec4f ValueError exception correctly thrown when test.value = 'plain text'
MFVec4f test       = [(0, 1, 2, 3), (4, 5, 6, 7)]
MFVec4f value type = <class 'list'>
isinstance MFVec4f = True
MFVec4f test.value = [(0, 1, 2, 3), (4, 5, 6, 7)]
MFVec4f test.XML() = 0 1 2 3 4 5 6 7
MFVec4f test.VRML()= [0 1 2 3 4 5 6 7]
MFVec4f test.JSON()= 0 1 2 3 4 5 6 7
MFVec4f regex match= <re.Match object; span=(0, 28), match='[(0, 1, 2, 3), (4, 5, 6, 7)]'>
MFVec4f     isValidMFVec4f(test)=True
MFVec4f assertValidMFVec4f(test) # execution continues if no assertion failure occurs
- - - - - - - - - -
SFVec4d.NAME()         = SFVec4d
SFVec4d.DEFAULT_VALUE()= (0.0, 0.0, 0.0, 1.0)
SFVec4d.ARRAY_TYPE()   = False
SFVec4d.TUPLE_SIZE()   = 4
SFVec4d.REGEX_PYTHON() = \s*\(\s*(([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\,?\s*){3}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\)\s*
SFVec4d.REGEX_XML()    = \s*(([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s+){3}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*
SFVec4d.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#SFVec4d
SFVec4d X3DTypeError exception correctly thrown when test.value = 'plain text'
SFVec4d test       = (1, 2, 3, 4)
SFVec4d value type = <class 'tuple'>
isinstance SFVec4d = True
SFVec4d test.value = (1, 2, 3, 4)
SFVec4d test.XML() = 1 2 3 4
SFVec4d test.VRML()= 1 2 3 4
SFVec4d test.JSON()= 1 2 3 4
SFVec4d regex match= <re.Match object; span=(0, 12), match='(1, 2, 3, 4)'>
SFVec4d     isValidSFVec4d(test)=True
SFVec4d assertValidSFVec4d(test) # execution continues if no assertion failure occurs

MFVec4d.NAME()         = MFVec4d
MFVec4d.DEFAULT_VALUE()= []
MFVec4d.ARRAY_TYPE()   = True
MFVec4d.TUPLE_SIZE()   = 4
MFVec4d.REGEX_PYTHON() = \s*\[?\s*(\s*\(?\s*((([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\,?\s*){3}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*,?\s*)*\)?\s*\,?)*\s*\]?\s*
MFVec4d.REGEX_XML()    = \s*((([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s+){3}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*,?\s*)*
MFVec4d.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#MFVec4d
MFVec4d ValueError exception correctly thrown when test.value = 'plain text'
MFVec4d test       = [(0, 1, 2, 3), (4, 5, 6, 7)]
MFVec4d value type = <class 'list'>
isinstance MFVec4d = True
MFVec4d test.value = [(0, 1, 2, 3), (4, 5, 6, 7)]
MFVec4d test.XML() = 0 1 2 3 4 5 6 7
MFVec4d test.VRML()= [0 1 2 3 4 5 6 7]
MFVec4d test.JSON()= 0 1 2 3 4 5 6 7
MFVec4d regex match= <re.Match object; span=(0, 28), match='[(0, 1, 2, 3), (4, 5, 6, 7)]'>
MFVec4d     isValidMFVec4d(test)=True
MFVec4d assertValidMFVec4d(test) # execution continues if no assertion failure occurs
- - - - - - - - - -
SFColor.NAME()         = SFColor
SFColor.DEFAULT_VALUE()= (0, 0, 0)
SFColor.ARRAY_TYPE()   = False
SFColor.TUPLE_SIZE()   = 3
SFColor.REGEX_PYTHON() = \s*\(\s*(([+]?((0(\.[0-9]*)?|\.[0-9]+)|1(\.0*)?)([Ee][+-]?[0-9]+)?)\s*\,?\s*){2}([+]?((0(\.[0-9]*)?|\.[0-9]+)|1(\.0*)?)([Ee][+-]?[0-9]+)?)\s*\)\s*
SFColor.REGEX_XML()    = \s*(([+]?((0(\.[0-9]*)?|\.[0-9]+)|1(\.0*)?)([Ee][+-]?[0-9]+)?)\s+){2}([+]?((0(\.[0-9]*)?|\.[0-9]+)|1(\.0*)?)([Ee][+-]?[0-9]+)?)\s*
SFColor.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#SFColor
SFColor isZeroToOne((1, 1, 1))=True
SFColor isZeroToOne((1, 1, 1))=True
SFColor X3DTypeError exception correctly thrown when test.value = 'plain text'
SFColor test       = (0, 0.5, 1)
SFColor value type = <class 'tuple'>
isinstance SFColor = True
SFColor test.value = (0, 0.5, 1)
SFColor test.XML() = 0 0.5 1
SFColor test.VRML()= 0 0.5 1
SFColor test.JSON()= 0 0.5 1
SFColor regex match= <re.Match object; span=(0, 11), match='(0, 0.5, 1)'>
SFColor   isValidSFColor(test)=True
SFColor      isZeroToOne(test)=True
SFColor assertValidSFColor(test) # execution continues if no assertion failure occurs

MFColor.NAME()         = MFColor
MFColor.DEFAULT_VALUE()= []
MFColor.ARRAY_TYPE()   = True
MFColor.TUPLE_SIZE()   = 3
MFColor.REGEX_PYTHON() = \s*\[?\s*(\s*\(?\s*((([+-]?((0(\.[0-9]*)?|\.[0-9]+)|1(\.0*)?)([Ee][+-]?[0-9]+)?)\s*\,?\s*){2}([+-]?((0(\.[0-9]*)?|\.[0-9]+)|1(\.0*)?)([Ee][+-]?[0-9]+)?)\s*,?\s*)*\)?\s*\,?)*\s*\]?\s*
MFColor.REGEX_XML()    = \s*((([+-]?((0(\.[0-9]*)?|\.[0-9]+)|1(\.0*)?)([Ee][+-]?[0-9]+)?)\s+){2}([+-]?((0(\.[0-9]*)?|\.[0-9]+)|1(\.0*)?)([Ee][+-]?[0-9]+)?)\s*,?\s*)*
MFColor.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#MFColor
MFColor isZeroToOne((1, 1, 1))=True
MFColor isZeroToOne([(0, 0.5, 1), (1, 0.5, 0)])=True
MFColor ValueError exception correctly thrown when test.value = 'plain text'
MFColor test       = [(0, 0.5, 1), (1, 0.5, 0)]
MFColor value type = <class 'list'>
isinstance MFColor = True
MFColor test.value = [(0, 0.5, 1), (1, 0.5, 0)]
MFColor test.XML() = 0 0.5 1 1 0.5 0
MFColor test.VRML()= [0 0.5 1 1 0.5 0]
MFColor test.JSON()= 0 0.5 1 1 0.5 0
MFColor regex match= <re.Match object; span=(0, 26), match='[(0, 0.5, 1), (1, 0.5, 0)]'>
MFColor     isValidMFColor(test)=True
MFColor        isZeroToOne(test)=True
MFColor assertValidMFColor(test) # execution continues if no assertion failure occurs
- - - - - - - - - -
SFColorRGBA.NAME()         = SFColorRGBA
SFColorRGBA.DEFAULT_VALUE()= (0, 0, 0, 0)
SFColorRGBA.ARRAY_TYPE()   = False
SFColorRGBA.TUPLE_SIZE()   = 4
SFColorRGBA.REGEX_PYTHON() = \s*\(\s*(([+-]?((0(\.[0-9]*)?|\.[0-9]+)|1(\.0*)?)([Ee][+-]?[0-9]+)?)\s*\,?\s*){3}([+-]?((0(\.[0-9]*)?|\.[0-9]+)|1(\.0*)?)([Ee][+-]?[0-9]+)?)\s*\)\s*
SFColorRGBA.REGEX_XML()    = \s*(([+-]?((0(\.[0-9]*)?|\.[0-9]+)|1(\.0*)?)([Ee][+-]?[0-9]+)?)\s+){3}([+-]?((0(\.[0-9]*)?|\.[0-9]+)|1(\.0*)?)([Ee][+-]?[0-9]+)?)\s*
SFColorRGBA.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#SFColorRGBA
SFColorRGBA isZeroToOne((1, 1, 1, 1))=True
SFColorRGBA isZeroToOne((1, 1, 1, 1))=True
SFColorRGBA X3DTypeError exception correctly thrown when test.value = 'plain text'
SFColorRGBA test       = (0, 0.5, 1, 0.75)
SFColorRGBA value type = <class 'tuple'>
isinstance SFColorRGBA = True
SFColorRGBA test.value = (0, 0.5, 1, 0.75)
SFColorRGBA test.XML() = 0 0.5 1 0.75
SFColorRGBA test.VRML()= 0 0.5 1 0.75
SFColorRGBA test.JSON()= 0 0.5 1 0.75
SFColorRGBA regex match= <re.Match object; span=(0, 17), match='(0, 0.5, 1, 0.75)'>
SFColorRGBA     isValidSFColorRGBA(test)=True
SFColorRGBA            isZeroToOne(test)=True
SFColorRGBA assertValidSFColorRGBA(test) # execution continues if no assertion failure occurs

MFColorRGBA.NAME()         = MFColorRGBA
MFColorRGBA.DEFAULT_VALUE()= []
MFColorRGBA.ARRAY_TYPE()   = True
MFColorRGBA.TUPLE_SIZE()   = 4
MFColorRGBA.REGEX_PYTHON() = \s*\[?\s*(\s*\(?\s*((([+-]?((0(\.[0-9]*)?|\.[0-9]+)|1(\.0*)?)([Ee][+-]?[0-9]+)?)\s*\,?\s*){3}([+-]?((0(\.[0-9]*)?|\.[0-9]+)|1(\.0*)?)([Ee][+-]?[0-9]+)?)\s*,?\s*)*\)?\s*\,?)*\s*\]?\s*
MFColorRGBA.REGEX_XML()    = \s*((([+-]?((0(\.[0-9]*)?|\.[0-9]+)|1(\.0*)?)([Ee][+-]?[0-9]+)?)\s+){3}([+-]?((0(\.[0-9]*)?|\.[0-9]+)|1(\.0*)?)([Ee][+-]?[0-9]+)?)\s*,?\s*)*
MFColorRGBA.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#MFColorRGBA
MFColorRGBA isZeroToOne((1, 1, 1, 1))=True
MFColorRGBA isZeroToOne([(0, 0.5, 1, 0.75), (1, 0.5, 0, 0.75)])=True
MFColorRGBA ValueError exception correctly thrown when test.value = 'plain text'
MFColorRGBA test       = [(0, 0.5, 1, 0.75), (1, 0.5, 0, 0.75)]
MFColorRGBA value type = <class 'list'>
isinstance MFColorRGBA = True
MFColorRGBA test.value = [(0, 0.5, 1, 0.75), (1, 0.5, 0, 0.75)]
MFColorRGBA test.XML() = 0 0.5 1 0.75 1 0.5 0 0.75
MFColorRGBA test.VRML()= [0 0.5 1 0.75 1 0.5 0 0.75]
MFColorRGBA test.JSON()= 0 0.5 1 0.75 1 0.5 0 0.75
MFColorRGBA regex match= <re.Match object; span=(0, 38), match='[(0, 0.5, 1, 0.75), (1, 0.5, 0, 0.75)]'>
MFColorRGBA     isValidMFColorRGBA(test)=True
MFColorRGBA            isZeroToOne(test)=True
MFColorRGBA assertValidMFColorRGBA(test) # execution continues if no assertion failure occurs
- - - - - - - - - -
SFRotation.NAME()         = SFRotation
SFRotation.DEFAULT_VALUE()= (0, 0, 1, 0)
SFRotation.ARRAY_TYPE()   = False
SFRotation.TUPLE_SIZE()   = 4
SFRotation.REGEX_PYTHON() = \s*\(\s*(([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\,?\s*){3}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\)\s*
SFRotation.REGEX_XML()    = \s*(([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s+){3}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*
SFRotation.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#SFRotation
SFRotation X3DTypeError exception correctly thrown when test.value = 'plain text'
SFRotation test       = (0, 0.5, 1, 0.75)
SFRotation value type = <class 'tuple'>
isinstance SFRotation = True
SFRotation test.value = (0, 0.5, 1, 0.75)
SFRotation test.XML() = 0 0.5 1 0.75
SFRotation test.VRML()= 0 0.5 1 0.75
SFRotation test.JSON()= 0 0.5 1 0.75
SFRotation regex match= <re.Match object; span=(0, 17), match='(0, 0.5, 1, 0.75)'>
SFRotation     isValidSFRotation(test)=True
SFRotation assertValidSFRotation(test) # execution continues if no assertion failure occurs

MFRotation.NAME()         = MFRotation
MFRotation.DEFAULT_VALUE()= []
MFRotation.ARRAY_TYPE()   = True
MFRotation.TUPLE_SIZE()   = 4
MFRotation.REGEX_PYTHON() = \s*\[?\s*(\s*\(?\s*((([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*\,?\s*){3}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*,?\s*)*\)?\s*\,?)*\s*\]?\s*
MFRotation.REGEX_XML()    = \s*((([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s+){3}([+-]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*,?\s*)*
MFRotation.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#MFRotation
MFRotation ValueError exception correctly thrown when test.value = 'plain text'
MFRotation test       = [(0, 0.5, 1, 0.75), (1, 0.5, 0, 0.75)]
MFRotation value type = <class 'list'>
isinstance MFRotation = True
MFRotation test.value = [(0, 0.5, 1, 0.75), (1, 0.5, 0, 0.75)]
MFRotation test.XML() = 0 0.5 1 0.75 1 0.5 0 0.75
MFRotation test.VRML()= [0 0.5 1 0.75 1 0.5 0 0.75]
MFRotation test.JSON()= 0 0.5 1 0.75 1 0.5 0 0.75
MFRotation regex match= <re.Match object; span=(0, 38), match='[(0, 0.5, 1, 0.75), (1, 0.5, 0, 0.75)]'>
MFRotation     isValidMFRotation(test)=True
MFRotation assertValidMFRotation(test) # execution continues if no assertion failure occurs
- - - - - - - - - -
SFNode.NAME()         = SFNode
SFNode.DEFAULT_VALUE()= None
SFNode.ARRAY_TYPE()   = False
SFNode.TUPLE_SIZE()   = 1
SFNode.REGEX_PYTHON() = 
SFNode.REGEX_XML()    = 
SFNode.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#SFNode
SFNode test                   = WorldInfo(title='Smoky World',DEF='A')
SFNode test.value             = WorldInfo(title='Smoky World',DEF='A')
-----
SFNode test.XML()  =
<WorldInfo DEF='A' title='Smoky World'/>

-----
SFNode test.VRML() =

DEF A WorldInfo {
  title "Smoky World" 
}

-----
SFNode test.JSON() =
"WorldInfo":
{
      {
        "@DEF":"A",
        "@title":"Smoky World"
      }
    }

-----
SFNode     isValidSFNode(test)=True
SFNode assertValidSFNode(test) # execution continues if no assertion failure occurs

MFNode.NAME()         = MFNode
MFNode.DEFAULT_VALUE()= []
MFNode.ARRAY_TYPE()   = True
MFNode.TUPLE_SIZE()   = 1
MFNode.REGEX_PYTHON() = 
MFNode.REGEX_XML()    = 
MFNode.TOOLTIP_URL()  = https://www.web3d.org/x3d/tooltips/X3dTooltips.html#MFNode
MFNode test                   = [Group(DEF='B'), Shape(appearance=Appearance(material=Material(DEF='E'),DEF='D'),DEF='C'), WorldInfo(DEF='F'), ROUTE(fromField='bboxSize',fromNode='B',toField='bboxCenter',toNode='C')]
-----
MFNode test.XML()  =
<Group DEF='B'/>
<Shape DEF='C'>
  <Appearance DEF='D'>
    <Material DEF='E'/>
  </Appearance>
</Shape>
<WorldInfo DEF='F'/>
<ROUTE fromField='bboxSize' fromNode='B' toField='bboxCenter' toNode='C'/>
-----
MFNode test.VRML() =

DEF B Group { 
}

DEF C Shape {
  appearance DEF D Appearance {
    material DEF E Material { 
    }
     
  }
   
}

DEF F WorldInfo { 
}

ROUTE B.bboxSize TO C.bboxCenter
-----
MFNode test.JSON() =
"Group":
{
      {
        "@DEF":"B"
      }
    },
"Shape":
{
      {
        "@DEF":"C"
      }
    "Appearance":
    {
      {
        "@DEF":"D"
      }
        "Material":
        {
      {
        "@DEF":"E"
      }
    },
    }}"WorldInfo":
{
      {
        "@DEF":"F"
      }
    }
"ROUTE":
{
      {
        "@fromField":"bboxSize",
        "@fromNode":"B",
        "@toField":"bboxCenter",
        "@toNode":"C"
      }
    },
-----
MFNode str(test.value)        = [<x3d.Group object at 0x00000247AD369B50>, <x3d.Shape object at 0x00000247AD3360D0>, <x3d.WorldInfo object at 0x00000247B0F8A050>, <x3d.ROUTE object at 0x00000247B0F89E50>] TODO get result to match by adding MFNode.__repl__; questionable use case
MFNode     isValidMFNode(test)=True
MFNode assertValidMFNode(test) # execution continues if no assertion failure occurs
- - - - - - - - - -

Range function tests:
isPositive()    tests passed
isNonNegative() tests passed
isZeroToOne()   tests passed
isBoundingBox() tests passed
isPositive   (None)= None
isNonNegative(None)= None
isZeroToOne  (None)= None
isBoundingBox(None)= None

Assertion tests:
test AssertionError assertBoundingBox:       Group(bboxSize=(+3, +2, +1)) expected to pass
test AssertionError assertZeroToOne:         SpotLight(ambientIntensity=0.5) expected to pass
test AssertionError assertNonNegative:       SpotLight(radius=1) expected to pass
test AssertionError assertPositive:          unit(conversionFactor=1) expected to pass
test AssertionError assertGreaterThanEquals: component(level=1) expected to pass
test AssertionError assertLessThanEquals:    component(level=5) expected to pass
test AssertionError assertGreaterThan:       Arc2D(startAngle=-6.28) expected to pass
test AssertionError assertLessThan:          Arc2D(startAngle=+6.28) expected to pass

(Assertion tests expected to fail are commented out and require individual confirmation checks)

test X3DField type mismatch:  isValidSFVec3f(SFColor()) expected to return False, actual return: True

Node and field tests:
materialInstance.NAME= Material
field accessor test, including default value emissiveColor:
materialInstance=Material(DEF='Grey',diffuseColor=(0.5, 0.5, 0.5),emissiveColor=(0, 0, 0),transparency=0.2)
must use str() function when concatenating:
    materialInstance  = Material(diffuseColor=(0.5, 0.5, 0.5),transparency=0.2,DEF='Grey')
str(materialInstance) = Material(diffuseColor=(0.5, 0.5, 0.5),transparency=0.2,DEF='Grey') (should match)
assertValidSFNode (materialInstance) =True
isX3DNode         (materialInstance) =True
isX3DStatement    (materialInstance) =False
WorldInfo(USE='useful',class_='classic')= WorldInfo(DEF=None,USE='useful',class_='classic')
    Group() = Group()
str(Group())= Group() (should match)
    routeInstance = ROUTE(fromField='Here',toField='There')
str(routeInstance)= ROUTE(fromField='Here',toField='There') (should match)
    ROUTE()  = ROUTE()
str(ROUTE()) = ROUTE() (should match)
isX3DNode     (routeInstance)=False
isX3DNode     (ROUTE())      =False (should match)
isX3DStatement(routeInstance)=True
isX3DStatement(ROUTE())      =True (should match)
    nestedNodesTest = Shape(appearance=Appearance(material=Material(diffuseColor=(0.3, 0.4, 0.5),transparency=0.2,DEF='Grey')),geometry=Sphere(radius=2),metadata=MetadataString(value=[checking]))
str(nestedNodesTest)= Shape(appearance=Appearance(material=Material(diffuseColor=(0.3, 0.4, 0.5),transparency=0.2,DEF='Grey')),geometry=Sphere(radius=2),metadata=MetadataString(value=[checking])) (should match)
    groupTest  = Group(bboxSize=(1, 2, 3),children=[WorldInfo(), Group(), Shape()])
str(groupTest) = Group(bboxSize=(1, 2, 3),children=[WorldInfo(), Group(), Shape()]) (should match)
length of MFNode list groupTest.children = 3
     headTest  = head(children=[component(), unit(), meta(content='2',name='1'), meta()])
 str(headTest) = head(children=[component(), unit(), meta(content='2',name='1'), meta()]) (should match)
    sceneTest  = Scene(children=[WorldInfo(), Group()])
str(sceneTest) = Scene(children=[WorldInfo(), Group()]) (should match)

initialization testScene1.XML()=
<Scene/>

*** testScene1 Scene with no children() test:    hasChild() = False

initialization testScene2.XML()=
<Scene>
  <Group/>
</Scene>

*** testScene2 Scene with single children() test: hasChild() = True

initialization testScene3.XML()=
<Scene>
  <Transform/>
</Scene>

*** testScene3 Scene with different single children() test: hasChild() = True

metaDiagnostics utility function:
meta information, info: diagnostic test 1, hint: diagnostic test 2, warning: diagnostic test 3, error: diagnostic test 4

    modelTest     = X3D(head=head(children=[component(level=2,name='Grouping'), Comment(), unit(category='length',conversionFacto,Scene=Scene(children=[WorldInfo(title='modelTest sample scene',DEF='TestWorldInfo'), WorldInfo(DEF=None,US)
str(modelTest)    = X3D(head=head(children=[component(level=2,name='Grouping'), Comment(), unit(category='length',conversionFacto,Scene=Scene(children=[WorldInfo(title='modelTest sample scene',DEF='TestWorldInfo'), WorldInfo(DEF=None,US) (should match)

===================
    (default) XML(syntax="XML") allows self-closing singleton elements
    modelTest.XML(syntax="XML") =
[ 1] <?xml version="1.0" encoding="UTF-8"?>
[ 2] <!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 4.0//EN" "https://www.web3d.org/specifications/x3d-4.0.dtd">
[ 3] <X3D profile='Full' version='4.0' xmlns:xsd='http://www.w3.org/2001/XMLSchema-instance' xsd:noNamespaceSchemaLocation='https://www.web3d.org/specifications/x3d-4.0.xsd'>
[ 4]   <head>
[ 5]     <component level='2' name='Grouping'/>
[ 6]     <!-- hello persistent comment in head children -->
[ 7]     <unit category='length' conversionFactor='0.001' name='MILLIMETER'/>
[ 8]     <meta content='name-value pair &amp; solitary-ampersand test' name='description'/>
[ 9]     <meta content='diagnostic test 1' name='info'/>
[10]     <meta content='diagnostic test 2' name='hint'/>
[11]     <meta content='diagnostic test 3' name='warning'/>
[12]     <meta content='diagnostic test 4' name='error'/>
[13]   </head>
[14]   <Scene>
[15]     <WorldInfo DEF='TestWorldInfo' title='modelTest sample scene'/>
[16]     <WorldInfo USE='TestWorldInfo'/>
[17]     <!-- hello persistent comment in Scene children -->
[18]     <NavigationInfo type='"EXAMINE" "FLY" "ANY"'/>
[19]     <Group DEF='EmptyGroup' bboxSize='1 2 3'/>
[20]     <Transform translation='0 2 0'>
[21]       <Shape>
[22]         <Text string='"Smoke" "Test"'>
[23]           <FontStyle style='BOLD'/>
[24]         </Text>
[25]       </Shape>
[26]       <!-- hello persistent comment in Transform children -->
[27]     </Transform>
[28]     <Shape DEF='TestShape'>
[29]       <Appearance DEF='TestAppearance'>
[30]         <Material DEF='TestMaterial' diffuseColor='0.4 0.6 0.8' transparency='0.5'/>
[31]       </Appearance>
[32]       <Box DEF='TestBox'/>
[33]     </Shape>
[34]     <!-- note that comment objects are persistent and valid children nodes -->
[35]     <Inline url='"HelloWorld.x3d" "https://www.web3d.org/x3d/content/examples/HelloWorld.x3d"'/>
[36]     <ROUTE fromField='bboxSize' fromNode='TestGroup' toField='size' toNode='TestBox'/>
[37]     <ProtoDeclare name='SmokeProto'>
[38]       <ProtoInterface>
[39]         <field accessType='inputOutput' appinfo='offset 1' name='offset1' type='SFVec3f' value='0 0 -5'/>
[40]         <field accessType='inputOutput' appinfo='offset 2' name='offset2' type='SFFloat' value='0.5'/>
[41]       </ProtoInterface>
[42]       <ProtoBody>
[43]         <Material ambientIntensity='0.254777' diffuseColor='0.685208 0.134679 0.332385' shininess='0.071429' specularColor='0.122449 0.050035 0.050035'>
[44]           <IS>
[45]             <connect nodeField='shininess' protoField='offset2'/>
[46]           </IS>
[47]         </Material>
[48]       </ProtoBody>
[49]     </ProtoDeclare>
[50]     <ProtoInstance name='SmokeProto'>
[51]       <fieldValue name='offset1' value='0 7 8'/>
[52]       <fieldValue name='offset2' value='0.78'/>
[53]     </ProtoInstance>
[54]     <Script DEF='SmokeScript'>
[55]     <![CDATA[
[56] ecmascript:
[57] // testing multi-line text block support for Script sourceCode field
[58] ]]>
[59]     </Script>
[60]   </Scene>
[61] </X3D>

===================
    alternate HTML5() produces closing elements, invokes XML(syntax="HTML5")
    modelTest.HTML5() =
[ 1]   <?xml version="1.0" encoding="UTF-8"?>
[ 2]   <!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 4.0//EN" "https://www.web3d.org/specifications/x3d-4.0.dtd">
[ 3]   <X3D profile='Full' version='4.0' xmlns:xsd='http://www.w3.org/2001/XMLSchema-instance' xsd:noNamespaceSchemaLocation='https://www.web3d.org/specifications/x3d-4.0.xsd'>
[ 4]     <head>
[ 5]       <component level='2' name='Grouping'></component>
[ 6]       <!-- hello persistent comment in head children -->
[ 7]       <unit category='length' conversionFactor='0.001' name='MILLIMETER'></unit>
[ 8]       <meta content='name-value pair &amp; solitary-ampersand test' name='description'></meta>
[ 9]       <meta content='diagnostic test 1' name='info'></meta>
[10]       <meta content='diagnostic test 2' name='hint'></meta>
[11]       <meta content='diagnostic test 3' name='warning'></meta>
[12]       <meta content='diagnostic test 4' name='error'></meta>
[13]     </head>
[14]     <Scene>
[15]       <WorldInfo DEF='TestWorldInfo' title='modelTest sample scene'></WorldInfo>
[16]       <WorldInfo USE='TestWorldInfo'></WorldInfo>
[17]       <!-- hello persistent comment in Scene children -->
[18]       <NavigationInfo type='"EXAMINE" "FLY" "ANY"'></NavigationInfo>
[19]       <Group DEF='EmptyGroup' bboxSize='1 2 3'></Group>
[20]       <Transform translation='0 2 0'>
[21]         <Shape>
[22]           <Text string='"Smoke" "Test"'>
[23]             <FontStyle style='BOLD'></FontStyle>
[24]           </Text>
[25]         </Shape>
[26]         <!-- hello persistent comment in Transform children -->
[27]       </Transform>
[28]       <Shape DEF='TestShape'>
[29]         <Appearance DEF='TestAppearance'>
[30]           <Material DEF='TestMaterial' diffuseColor='0.4 0.6 0.8' transparency='0.5'></Material>
[31]         </Appearance>
[32]         <Box DEF='TestBox'></Box>
[33]       </Shape>
[34]       <!-- note that comment objects are persistent and valid children nodes -->
[35]       <Inline url='"HelloWorld.x3d" "https://www.web3d.org/x3d/content/examples/HelloWorld.x3d"'></Inline>
[36]       <ROUTE fromField='bboxSize' fromNode='TestGroup' toField='size' toNode='TestBox'></ROUTE>
[37]       <ProtoDeclare name='SmokeProto'>
[38]         <ProtoInterface>
[39]           <field accessType='inputOutput' appinfo='offset 1' name='offset1' type='SFVec3f' value='0 0 -5'></field>
[40]           <field accessType='inputOutput' appinfo='offset 2' name='offset2' type='SFFloat' value='0.5'></field>
[41]         </ProtoInterface>
[42]         <ProtoBody>
[43]           <Material ambientIntensity='0.254777' diffuseColor='0.685208 0.134679 0.332385' shininess='0.071429' specularColor='0.122449 0.050035 0.050035'>
[44]             <IS>
[45]               <connect nodeField='shininess' protoField='offset2'></connect>
[46]             </IS>
[47]           </Material>
[48]         </ProtoBody>
[49]       </ProtoDeclare>
[50]       <ProtoInstance name='SmokeProto'>
[51]         <fieldValue name='offset1' value='0 7 8'></fieldValue>
[52]         <fieldValue name='offset2' value='0.78'></fieldValue>
[53]       </ProtoInstance>
[54]       <Script DEF='SmokeScript'>
[55]       <![CDATA[
[56] ecmascript:
[57] // testing multi-line text block support for Script sourceCode field
[58] ]]>
[59]       </Script>
[60]     </Scene>
[61] </X3D>

===================
              VRML() produces Virtual Reality Modeling Language syntax
    modelTest.VRML() =
[ 1] #VRML V4.0 utf8
[ 2] #X3D-to-ClassicVRML serialization autogenerated by X3DPSAIL x3d.py
[ 3] 
[ 4] PROFILE Full
[ 5] COMPONENT Grouping:2
[ 6] 
[ 7]     # hello persistent comment in head children
[ 8]     UNIT length MILLIMETER 0.001
[ 9] META "description" "name-value pair & solitary-ampersand test"
[10] META "info" "diagnostic test 1"
[11] META "hint" "diagnostic test 2"
[12] META "warning" "diagnostic test 3"
[13] META "error" "diagnostic test 4"
[14] DEF TestWorldInfo WorldInfo {
[15]       title "modelTest sample scene" 
[16]     }
[17]     USE TestWorldInfo 
[18]     # hello persistent comment in Scene children
[19]     NavigationInfo {
[20]       type ["EXAMINE" "FLY" "ANY"] 
[21]     }
[22]     DEF EmptyGroup Group {
[23]       bboxSize 1 2 3 
[24]     }
[25]     Transform {
[26]       translation 0 2 0
[27]       children [
[28]         Shape {
[29]           geometry Text {
[30]             string ["Smoke" "Test"]
[31]             fontStyle FontStyle {
[32]               style "BOLD" 
[33]             }
[34]              
[35]           }
[36]            
[37]         }
[38]         
[39]         # hello persistent comment in Transform children
[40]         
[41]       ]
[42]     
[43]     }
[44]     DEF TestShape Shape {
[45]       appearance DEF TestAppearance Appearance {
[46]         material DEF TestMaterial Material {
[47]           diffuseColor 0.4 0.6 0.8
[48]           transparency 0.5 
[49]         }
[50]          
[51]       }
[52]       
[53]       geometry DEF TestBox Box { 
[54]       }
[55]        
[56]     }
[57]     
[58]     # note that comment objects are persistent and valid children nodes
[59]     Inline {
[60]       url ["HelloWorld.x3d" "https://www.web3d.org/x3d/content/examples/HelloWorld.x3d"] 
[61]     }
[62]     
[63]     ROUTE TestGroup.bboxSize TO TestBox.size
[64]     ProtoDeclare {
[65]       name "SmokeProto"
[66]       ProtoInterface ProtoInterface {
[67]         children [
[68]           field {
[69]             accessType "inputOutput"
[70]             appinfo "offset 1"
[71]             name "offset1"
[72]             type "SFVec3f"
[73]             value (0, 0, -5) 
[74]           }
[75]           field {
[76]             accessType "inputOutput"
[77]             appinfo "offset 2"
[78]             name "offset2"
[79]             type "SFFloat"
[80]             value 0.5 
[81]           }
[82]           
[83]         ]
[84]       
[85]       }
[86]       
[87]       ProtoBody ProtoBody {
[88]         children [
[89]           Material {
[90]             ambientIntensity 0.254777
[91]             diffuseColor 0.685208 0.134679 0.332385
[92]             shininess 0.071429
[93]             specularColor 0.122449 0.050035 0.050035
[94]             IS IS {
[95]               children [
[96]                 connect {
[97]                   nodeField "shininess"
[98]                   protoField "offset2" 
[99]                 }
[100]                 
[101]               ]
[102]             
[103]             }
[104]              
[105]           }
[106]           
[107]         ]
[108]       
[109]       }
[110]       
[111]     }
[112]     ProtoInstance {
[113]       name "SmokeProto"
[114]       children [
[115]         fieldValue {
[116]           name "offset1"
[117]           value (0, 7, 8) 
[118]         }
[119]         fieldValue {
[120]           name "offset2"
[121]           value 0.78 
[122]         }
[123]         
[124]       ]
[125]     
[126]     }
[127]     DEF SmokeScript Script {
[128]       url "
[129] ecmascript:
[130] // testing multi-line text block support for Script sourceCode field
[131] " 
[132]     }
[133]     

===================
              JSON() produces JavaScript Object Notation (JSON) syntax
    modelTest.JSON() =
[ 1] {
[ 2]     "X3D":,
[ 3]     {
[ 4]         "encoding":"UTF-8",
[ 5]         "$id":   "https://www.web3d.org/specifications/x3d-4.0-JSONSchema.json",
[ 6]         "$schema": "https://json-schema.org/draft/2020-12/schema",
[ 7]         "@version":"4.0",
[ 8]         "@profile":"Full",
[ 9]     "head":
[10]     {
[11]         "component":
[12]         {
[13]       {
[14]         "@level":"2",
[15]         "@name":"Grouping"
[16]       }
[17]     },
[18]     { "#comment" : "hello persistent comment in head children" }
[19]         "unit":
[20]         {
[21]       {
[22]         "@category":"length",
[23]         "@conversionFactor":"0.001",
[24]         "@name":"MILLIMETER"
[25]       }
[26]     },
[27]         "meta":
[28]         {
[29]       {
[30]         "@content":"name-value pair & solitary-ampersand test",
[31]         "@name":"description"
[32]       }
[33]     },
[34]         "meta":
[35]         {
[36]       {
[37]         "@content":"diagnostic test 1",
[38]         "@name":"info"
[39]       }
[40]     },
[41]         "meta":
[42]         {
[43]       {
[44]         "@content":"diagnostic test 2",
[45]         "@name":"hint"
[46]       }
[47]     },
[48]         "meta":
[49]         {
[50]       {
[51]         "@content":"diagnostic test 3",
[52]         "@name":"warning"
[53]       }
[54]     },
[55]         "meta":
[56]         {
[57]       {
[58]         "@content":"diagnostic test 4",
[59]         "@name":"error"
[60]       }
[61]     },
[62]     }    "Scene":
[63]     {
[64]         "WorldInfo":
[65]         {
[66]       {
[67]         "@DEF":"TestWorldInfo",
[68]         "@title":"modelTest sample scene"
[69]       }
[70]     }
[71]         "WorldInfo":
[72]         {
[73]       {
[74]         "@USE":"TestWorldInfo"
[75]       }
[76]     }
[77]     { "#comment" : "hello persistent comment in Scene children" }
[78]         "NavigationInfo":
[79]         {
[80]       {
[81]         "@type":""EXAMINE" "FLY" "ANY""
[82]       }
[83]     },
[84]         "Group":
[85]         {
[86]       {
[87]         "@DEF":"EmptyGroup",
[88]         "@bboxSize":"1 2 3"
[89]       }
[90]     },
[91]         "Transform":
[92]         {
[93]       {
[94]         "@translation":"0 2 0"
[95]       }
[96]             "Shape":
[97]             {
[98]                 "Text":
[99]                 {
[100]       {
[101]         "@string":""Smoke" "Test""
[102]       }
[103]                     "FontStyle":
[104]                     {
[105]       {
[106]         "@style":"BOLD"
[107]       }
[108]     },
[109]                 }            }      { "#comment" : "hello persistent comment in Transform children" }
[110]         }        "Shape":
[111]         {
[112]       {
[113]         "@DEF":"TestShape"
[114]       }
[115]             "Appearance":
[116]             {
[117]       {
[118]         "@DEF":"TestAppearance"
[119]       }
[120]                 "Material":
[121]                 {
[122]       {
[123]         "@DEF":"TestMaterial",
[124]         "@diffuseColor":"0.4 0.6 0.8",
[125]         "@transparency":"0.5"
[126]       }
[127]     },
[128]             }            "Box":
[129]             {
[130]       {
[131]         "@DEF":"TestBox"
[132]       }
[133]     },
[134]         }    { "#comment" : "note that comment objects are persistent and valid children nodes" }
[135]         "Inline":
[136]         {
[137]       {
[138]         "@url":""HelloWorld.x3d" "https://www.web3d.org/x3d/content/examples/HelloWorld.x3d""
[139]       }
[140]     },
[141]         "ROUTE":
[142]         {
[143]       {
[144]         "@fromField":"bboxSize",
[145]         "@fromNode":"TestGroup",
[146]         "@toField":"size",
[147]         "@toNode":"TestBox"
[148]       }
[149]     },
[150]         "ProtoDeclare":
[151]         {
[152]       {
[153]         "@name":"SmokeProto"
[154]       }
[155]             "ProtoInterface":
[156]             {
[157]                 "field":
[158]                 {
[159]       {
[160]         "@accessType":"inputOutput",
[161]         "@appinfo":"offset 1",
[162]         "@name":"offset1",
[163]         "@type":"SFVec3f",
[164]         "@value":"(0, 0, -5)"
[165]       }
[166]     },
[167]                 "field":
[168]                 {
[169]       {
[170]         "@accessType":"inputOutput",
[171]         "@appinfo":"offset 2",
[172]         "@name":"offset2",
[173]         "@type":"SFFloat",
[174]         "@value":"0.5"
[175]       }
[176]     },
[177]             }            "ProtoBody":
[178]             {
[179]                 "Material":
[180]                 {
[181]       {
[182]         "@ambientIntensity":"0.254777",
[183]         "@diffuseColor":"0.685208 0.134679 0.332385",
[184]         "@shininess":"0.071429",
[185]         "@specularColor":"0.122449 0.050035 0.050035"
[186]       }
[187]                     "IS":
[188]                     {
[189]                         "connect":
[190]                         {
[191]       {
[192]         "@nodeField":"shininess",
[193]         "@protoField":"offset2"
[194]       }
[195]     },
[196]                     }                }            }        }        "ProtoInstance":
[197]         {
[198]       {
[199]         "@name":"SmokeProto"
[200]       }
[201]             "fieldValue":
[202]             {
[203]       {
[204]         "@name":"offset1",
[205]         "@value":"(0, 7, 8)"
[206]       }
[207]     },
[208]             "fieldValue":
[209]             {
[210]       {
[211]         "@name":"offset2",
[212]         "@value":"0.78"
[213]       }
[214]     },
[215]         }        "Script":
[216]         {
[217]       {
[218]         "@DEF":"SmokeScript",
[219]         "@sourceCode":"
[220] ecmascript:
[221] // testing multi-line text block support for Script sourceCode field
[222] "
[223]       }
[224]     },
[225]     }}

===================
              X3DOM() produces HTML for X3DOM
    modelTest.X3DOM() =
[ 1] <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
[ 2] 
[ 3] <!-- =================================================================== -->
[ 4] <!-- embedded X3D scene appears after html/head/script and style entries -->
[ 5] <!-- =================================================================== -->
[ 6] <html>
[ 7]    <head>
[ 8]       <title></title>
[ 9]       <meta http-equiv="X-UA-Compatible" content="chrome=1,IE=edge"/>
[10]       <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
[11] <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
[12] <!-- Numbered X3DOM release versions: https://doc.x3dom.org/download -->
[13] <!-- Developer X3DOM release version: https://doc.x3dom.org/download/dev -->
[14] <link rel="stylesheet"
[15]             type="text/css"
[16]             href="https://x3dom.org/release/x3dom.css"/>
[17]       <script type="text/javascript" src="https://x3dom.org/release/x3dom-full.js"/>
[18]       <meta name="warning"
[19]             content="Webfonts must be loaded prior to using Text node in X3D scene... see https://x3dom.org/x3dom/example/x3dom_text.html"/>
[20]       <!-- X3DOM needs Web Fonts when an X3D Text node is included -->
[21]       <!-- adapted from https://x3dom.org/x3dom/example/x3dom_text.html and https://web.mit.edu/jmorzins/www/fonts.html -->
[22]       <style type="text/css">
[23] /* ============================================================================= */
[24] @font-face {
[25]   font-family: 'SERIF'; /* default original */
[26]   font-style: normal;
[27]   font-weight: 700;
[28]   src: local('Roman'), url('Roman.ttf') format('truetype');
[29] }
[30] @font-face {
[31]   font-family: 'SERIF'; /* default alternate */
[32]   font-style: normal;
[33]   font-weight: 700;
[34]   src: local('Times New Roman'), local('TimesNewRoman'), url('Times New Roman.ttf') format('truetype');
[35] }
[36] /* ============================================================================= */
[37] @font-face {
[38]   font-family: 'SANS'; /* default original */
[39]   font-style: normal;
[40]   font-weight: 400;
[41]   src: local('Arial'), url('Arial.ttf') format('truetype');
[42] }
[43] @font-face {
[44]   font-family: 'SANS'; /* default alternate */
[45]   font-style: normal;
[46]   font-weight: 400;
[47]   src: local('Helvetica'), url('Helvetica.ttf') format('truetype');
[48] }
[49] /* ============================================================================= */
[50] @font-face {
[51]   font-family: 'TYPEWRITER'; /* default original */
[52]   font-style: normal;
[53]   font-weight: 900;
[54]   src: local('Courier'), url('Courier.ttf') format('truetype');
[55] }
[56] @font-face {
[57]   font-family: 'TYPEWRITER'; /* default alternate */
[58]   font-style: normal;
[59]   font-weight: 900;
[60]   src: local('Courier New'), url('Courier New.ttf') format('truetype');
[61] }
[62] /* ============================================================================= */
[63] </style>
[64]    </head>
[65]    <body><?xml version="1.0" encoding="UTF-8"?>
[66] <!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 4.0//EN" "https://www.web3d.org/specifications/x3d-4.0.dtd">
[67] <X3D profile='Full' version='4.0' xmlns:xsd='http://www.w3.org/2001/XMLSchema-instance' xsd:noNamespaceSchemaLocation='https://www.web3d.org/specifications/x3d-4.0.xsd'>
[68]   <head>
[69]     <component level='2' name='Grouping'></component>
[70]     <!-- hello persistent comment in head children -->
[71]     <unit category='length' conversionFactor='0.001' name='MILLIMETER'></unit>
[72]     <meta content='name-value pair &amp; solitary-ampersand test' name='description'></meta>
[73]     <meta content='diagnostic test 1' name='info'></meta>
[74]     <meta content='diagnostic test 2' name='hint'></meta>
[75]     <meta content='diagnostic test 3' name='warning'></meta>
[76]     <meta content='diagnostic test 4' name='error'></meta>
[77]   </head>
[78]   <Scene>
[79]     <WorldInfo DEF='TestWorldInfo' title='modelTest sample scene'></WorldInfo>
[80]     <WorldInfo USE='TestWorldInfo'></WorldInfo>
[81]     <!-- hello persistent comment in Scene children -->
[82]     <NavigationInfo type='"EXAMINE" "FLY" "ANY"'></NavigationInfo>
[83]     <Group DEF='EmptyGroup' bboxSize='1 2 3'></Group>
[84]     <Transform translation='0 2 0'>
[85]       <Shape>
[86]         <Text string='"Smoke" "Test"'>
[87]           <FontStyle style='BOLD'></FontStyle>
[88]         </Text>
[89]       </Shape>
[90]       <!-- hello persistent comment in Transform children -->
[91]     </Transform>
[92]     <Shape DEF='TestShape'>
[93]       <Appearance DEF='TestAppearance'>
[94]         <Material DEF='TestMaterial' diffuseColor='0.4 0.6 0.8' transparency='0.5'></Material>
[95]       </Appearance>
[96]       <Box DEF='TestBox'></Box>
[97]     </Shape>
[98]     <!-- note that comment objects are persistent and valid children nodes -->
[99]     <Inline url='"HelloWorld.x3d" "https://www.web3d.org/x3d/content/examples/HelloWorld.x3d"'></Inline>
[100]     <ROUTE fromField='bboxSize' fromNode='TestGroup' toField='size' toNode='TestBox'></ROUTE>
[101]     <ProtoDeclare name='SmokeProto'>
[102]       <ProtoInterface>
[103]         <field accessType='inputOutput' appinfo='offset 1' name='offset1' type='SFVec3f' value='0 0 -5'></field>
[104]         <field accessType='inputOutput' appinfo='offset 2' name='offset2' type='SFFloat' value='0.5'></field>
[105]       </ProtoInterface>
[106]       <ProtoBody>
[107]         <Material ambientIntensity='0.254777' diffuseColor='0.685208 0.134679 0.332385' shininess='0.071429' specularColor='0.122449 0.050035 0.050035'>
[108]           <IS>
[109]             <connect nodeField='shininess' protoField='offset2'></connect>
[110]           </IS>
[111]         </Material>
[112]       </ProtoBody>
[113]     </ProtoDeclare>
[114]     <ProtoInstance name='SmokeProto'>
[115]       <fieldValue name='offset1' value='0 7 8'></fieldValue>
[116]       <fieldValue name='offset2' value='0.78'></fieldValue>
[117]     </ProtoInstance>
[118]     <Script DEF='SmokeScript'>
[119]     <![CDATA[
[120] ecmascript:
[121] // testing multi-line text block support for Script sourceCode field
[122] ]]>
[123]     </Script>
[124]   </Scene>
[125] </X3D>
[126] 
[127]    </body>
[128] </html>

===================
*** created XML examples/PythonX3dSmokeTestsModel.xml
*** created VMRL97 examples/PythonX3dSmokeTestsModel.wrl
*** created JSON examples/PythonX3dSmokeTestsModel.json
*** created X3DOM examples/PythonX3dSmokeTestsModelX3DOM.html

Current work:
DONE value range checks for simple types
DONE .XML()   .x3d recursive serializer unit testing validation
DONE .VRML()       recursive serializer unit testing export
DONE .JSON()       recursive serializer unit testing export
TEST X3D.X_ITE()   saved as .xhtml
TEST X3D.X3DOM()   saved as .html
TEST .HTML5() .x3d recursive serializer
TODO check node types when building scene graph
TODO add and invoke validation methods that walk model tree
TEST add regex checks on field export for XML attributes

Build results are maintained at
https://sourceforge.net/p/x3d/code/HEAD/tree/www.web3d.org/x3d/stylesheets/python/build.examples.log.txt

PythonX3dSmokeTests execution complete.
test.X3dToPython.SmokeTests complete.
===========================================
===========================================
examples.HelloWorld.prefixed:
Convert and test verbose approach using HelloWorldPrefixed.py
convert.X3dToPython.xslt.prefixed:
Deleting: C:\x3d-code\www.web3d.org\x3d\stylesheets\python\examples\HelloWorldPrefixed.py
set.local.PYTHONPATH:
local.PYTHONPATH=C:\x3d-code\www.web3d.org\x3d\stylesheets\python
convert.X3dToPython.xslt:
===========================================
Deleting C:\x3d-code\www.web3d.org\x3d\stylesheets\python\examples\HelloWorld.py
===========================================
convert.X3dToPython.xslt conversion of HelloWorld.x3d to HelloWorld.py complete.
####################################################################################################
#
# Now available: developmental python x3d.py package on PyPi for import.
#   This approach simplifies Python X3D deployment and use.
#   https://pypi.org/project/x3d
#
# Installation:
#       pip install x3d
# or
#       python -m pip install x3d
#
# Developer options for loading x3d package:
#
#    from x3d import *  # preferred approach, terser source that avoids x3d.* class prefixes
#
# or
#    import x3d         # traditional way to subclass x3d package, all classes require x3d.* prefix,
#                       # but python source is very verbose, for example x3d.Material x3d.Shape etc.
#                       # X3dToPython.xslt stylesheet insertPackagePrefix=true supports this option.
#
####################################################################################################

import x3d

#  comment preceding root node 
newModel=x3d.X3D(profile='Immersive',version='3.3',
  head=x3d.head(
    children=[
    x3d.meta(content='HelloWorld.x3d',name='title'),
    x3d.meta(content='Simple X3D scene example: Hello World!',name='description'),
    x3d.meta(content='30 October 2000',name='created'),
    x3d.meta(content='31 October 2019',name='modified'),
    x3d.meta(content='Don Brutzman',name='creator'),
    x3d.meta(content='HelloWorld.tall.png',name='Image'),
    x3d.meta(content='http://en.wikipedia.org/wiki/Hello_world',name='reference'),
    x3d.meta(content='https://en.wikipedia.org/wiki/Hello#.22Hello.2C_World.22_computer_program',name='reference'),
    x3d.meta(content='https://en.wikipedia.org/wiki/"Hello,_World!"_program',name='reference'),
    x3d.meta(content='http://en.wikibooks.org/w/index.php?title=Computer_Programming/Hello_world',name='reference'),
    x3d.meta(content='http://www.HelloWorldExample.net',name='reference'),
    x3d.meta(content='http://www.web3D.org',name='reference'),
    x3d.meta(content='http://www.web3d.org/realtime-3d/news/internationalization-x3d',name='reference'),
    x3d.meta(content='http://www.web3d.org/x3d/content/examples/HelloWorld.x3d',name='reference'),
    x3d.meta(content='http://X3dGraphics.com/examples/X3dForAdvancedModeling/HelloWorldScenes',name='reference'),
    x3d.meta(content='http://X3dGraphics.com/examples/X3dForWebAuthors/Chapter01TechnicalOverview/HelloWorld.x3d',name='identifier'),
    x3d.meta(content='http://www.web3d.org/x3d/content/examples/license.html',name='license'),
    x3d.meta(content='X3D-Edit 3.3, https://savage.nps.edu/X3D-Edit',name='generator'),
    #  Alternate encodings: VRML97, X3D ClassicVRML Encoding, X3D Compressed Binary Encoding (CBE), X3DOM, JSON 
    x3d.meta(content='HelloWorld.wrl',name='reference'),
    x3d.meta(content='HelloWorld.x3dv',name='reference'),
    x3d.meta(content='HelloWorld.x3db',name='reference'),
    x3d.meta(content='HelloWorld.xhtml',name='reference'),
    x3d.meta(content='HelloWorld.json',name='reference')]),
  Scene=x3d.Scene(
    #  Example scene to illustrate X3D nodes and fields (XML elements and attributes) 
    children=[
    x3d.WorldInfo(title='Hello World!'),
    x3d.WorldInfo(title="Hello ' apostrophe 1"),
    x3d.WorldInfo(title="Hello ' apostrophe 2"),
    x3d.WorldInfo(title='Hello " quotation mark 3'),
    x3d.WorldInfo(title='Hello " quotation mark 4'),
    x3d.MetadataSet(name="items'",
      value=[
      x3d.MetadataInteger(name='one',value=[1]),
      x3d.MetadataInteger(name='two',value=[2])]),
    x3d.Group(
      children=[
      x3d.Viewpoint(DEF='ViewUpClose',centerOfRotation=(0,-1,0),description='Hello world!',position=(0,-1,7)),
      #  insert commas to test removal when converted to ttl 
      x3d.Transform(DEF='TestWhitespaceCommas',rotation=(0,1,0,3),
        children=[
        x3d.Shape(
          geometry=x3d.Sphere(),
          appearance=x3d.Appearance(
            material=x3d.Material(DEF='MaterialLightBlue',diffuseColor=(0.1,0.5,1)),
            texture=x3d.ImageTexture(DEF='ImageCloudlessEarth',url=["earth-topo.png","earth-topo.jpg","earth-topo-small.gif","http://www.web3d.org/x3d/content/examples/Basic/earth-topo.png","http://www.web3d.org/x3d/content/examples/Basic/earth-topo.jpg","http://www.web3d.org/x3d/content/examples/Basic/earth-topo-small.gif"])))]),
      x3d.Transform(translation=(0,-2,0),
        children=[
        x3d.Shape(
          geometry=x3d.Text(DEF='TextMessage',string=["Hello","world!"],
            fontStyle=x3d.FontStyle(justify=["MIDDLE","MIDDLE"])),
          appearance=x3d.Appearance(
            material=x3d.Material(USE='MaterialLightBlue')))])])])
) # X3D model complete

####################################################################################################
# Self-test diagnostics
####################################################################################################

print('Self-test diagnostics for HelloWorld.py:')
if        x3d.metaDiagnostics(newModel): # built-in utility method in X3D class to show
    print(x3d.metaDiagnostics(newModel)) # ('info', 'hint', 'warning', 'error', 'TODO')

# print('check newModel.XML() serialization...')
newModelXML= newModel.XML() # test export method XML() for exceptions during export
newModel.XMLvalidate()
# print(newModelXML) # diagnostic

try:
#   print('check newModel.VRML() serialization...')
    newModelVRML=newModel.VRML() # test export method VRML() for exceptions during export
    # print(prependLineNumbers(newModelVRML)) # debug
    print("Python-to-VRML export of VRML output successful", flush=True)
except Exception as err: # usually BaseException
    # https://stackoverflow.com/questions/18176602/how-to-get-the-name-of-an-exception-that-was-caught-in-python
    print("*** Python-to-VRML export of VRML output failed:", type(err).__name__, err)
    if newModelVRML: # may have failed to generate
        print(prependLineNumbers(newModelVRML, err.lineno))

try:
#   print('check newModel.JSON() serialization...')
    newModelJSON=newModel.JSON() # test export method JSON() for exceptions during export
#   print(prependLineNumbers(newModelJSON)) # debug
    print("Python-to-JSON export of JSON output successful (under development)")
except Exception as err: # usually SyntaxError
    print("*** Python-to-JSON export of JSON output failed:", type(err).__name__, err)
    if newModelJSON: # may have failed to generate
        print(prependLineNumbers(newModelJSON,err.lineno))

print("python HelloWorld.py load and self-test diagnostics complete.")
===========================================
Loading local x3d.py package in python to check for correctness...
  then test HelloWorld.py execution and self-validation:
  python examples/HelloWorld.py
x3d.py package 4.0.64.4 loaded, have fun with X3D Graphics!
Self-test diagnostics for HelloWorld.py:
Python-to-XML well-formed XML document  test of XML output complete
Python-to-XML X3D 3.3 schema validation test of XML output complete
Python-to-VRML export of VRML output successful
Python-to-JSON export of JSON output successful (under development)
python HelloWorld.py load and self-test diagnostics complete.
convert.X3dToPython.xslt conversion of HelloWorld.x3d to HelloWorld.py complete.
===========================================
Moving 1 file to C:\x3d-code\www.web3d.org\x3d\stylesheets\python\examples
Attempting to rename: C:\x3d-code\www.web3d.org\x3d\stylesheets\python\examples\HelloWorld.py to C:\x3d-code\www.web3d.org\x3d\stylesheets\python\examples\HelloWorldPrefixed.py
===========================================
examples.HelloWorld:
set.local.PYTHONPATH:
local.PYTHONPATH=C:\x3d-code\www.web3d.org\x3d\stylesheets\python
convert.X3dToPython.xslt:
===========================================
===========================================
convert.X3dToPython.xslt conversion of HelloWorld.x3d to HelloWorld.py complete.
####################################################################################################
#
# Now available: developmental python x3d.py package on PyPi for import.
#   This approach simplifies Python X3D deployment and use.
#   https://pypi.org/project/x3d
#
# Installation:
#       pip install x3d
# or
#       python -m pip install x3d
#
# Developer options for loading x3d package:
#
#    from x3d import *  # preferred approach, terser source that avoids x3d.* class prefixes
#
# or
#    import x3d         # traditional way to subclass x3d package, all classes require x3d.* prefix,
#                       # but python source is very verbose, for example x3d.Material x3d.Shape etc.
#                       # X3dToPython.xslt stylesheet insertPackagePrefix=true supports this option.
#
####################################################################################################

from x3d import *

#  comment preceding root node 
newModel=X3D(profile='Immersive',version='3.3',
  head=head(
    children=[
    meta(content='HelloWorld.x3d',name='title'),
    meta(content='Simple X3D scene example: Hello World!',name='description'),
    meta(content='30 October 2000',name='created'),
    meta(content='31 October 2019',name='modified'),
    meta(content='Don Brutzman',name='creator'),
    meta(content='HelloWorld.tall.png',name='Image'),
    meta(content='http://en.wikipedia.org/wiki/Hello_world',name='reference'),
    meta(content='https://en.wikipedia.org/wiki/Hello#.22Hello.2C_World.22_computer_program',name='reference'),
    meta(content='https://en.wikipedia.org/wiki/"Hello,_World!"_program',name='reference'),
    meta(content='http://en.wikibooks.org/w/index.php?title=Computer_Programming/Hello_world',name='reference'),
    meta(content='http://www.HelloWorldExample.net',name='reference'),
    meta(content='http://www.web3D.org',name='reference'),
    meta(content='http://www.web3d.org/realtime-3d/news/internationalization-x3d',name='reference'),
    meta(content='http://www.web3d.org/x3d/content/examples/HelloWorld.x3d',name='reference'),
    meta(content='http://X3dGraphics.com/examples/X3dForAdvancedModeling/HelloWorldScenes',name='reference'),
    meta(content='http://X3dGraphics.com/examples/X3dForWebAuthors/Chapter01TechnicalOverview/HelloWorld.x3d',name='identifier'),
    meta(content='http://www.web3d.org/x3d/content/examples/license.html',name='license'),
    meta(content='X3D-Edit 3.3, https://savage.nps.edu/X3D-Edit',name='generator'),
    #  Alternate encodings: VRML97, X3D ClassicVRML Encoding, X3D Compressed Binary Encoding (CBE), X3DOM, JSON 
    meta(content='HelloWorld.wrl',name='reference'),
    meta(content='HelloWorld.x3dv',name='reference'),
    meta(content='HelloWorld.x3db',name='reference'),
    meta(content='HelloWorld.xhtml',name='reference'),
    meta(content='HelloWorld.json',name='reference')]),
  Scene=Scene(
    #  Example scene to illustrate X3D nodes and fields (XML elements and attributes) 
    children=[
    WorldInfo(title='Hello World!'),
    WorldInfo(title="Hello ' apostrophe 1"),
    WorldInfo(title="Hello ' apostrophe 2"),
    WorldInfo(title='Hello " quotation mark 3'),
    WorldInfo(title='Hello " quotation mark 4'),
    MetadataSet(name="items'",
      value=[
      MetadataInteger(name='one',value=[1]),
      MetadataInteger(name='two',value=[2])]),
    Group(
      children=[
      Viewpoint(DEF='ViewUpClose',centerOfRotation=(0,-1,0),description='Hello world!',position=(0,-1,7)),
      #  insert commas to test removal when converted to ttl 
      Transform(DEF='TestWhitespaceCommas',rotation=(0,1,0,3),
        children=[
        Shape(
          geometry=Sphere(),
          appearance=Appearance(
            material=Material(DEF='MaterialLightBlue',diffuseColor=(0.1,0.5,1)),
            texture=ImageTexture(DEF='ImageCloudlessEarth',url=["earth-topo.png","earth-topo.jpg","earth-topo-small.gif","http://www.web3d.org/x3d/content/examples/Basic/earth-topo.png","http://www.web3d.org/x3d/content/examples/Basic/earth-topo.jpg","http://www.web3d.org/x3d/content/examples/Basic/earth-topo-small.gif"])))]),
      Transform(translation=(0,-2,0),
        children=[
        Shape(
          geometry=Text(DEF='TextMessage',string=["Hello","world!"],
            fontStyle=FontStyle(justify=["MIDDLE","MIDDLE"])),
          appearance=Appearance(
            material=Material(USE='MaterialLightBlue')))])])])
) # X3D model complete

####################################################################################################
# Self-test diagnostics
####################################################################################################

print('Self-test diagnostics for HelloWorld.py:')
if        metaDiagnostics(newModel): # built-in utility method in X3D class
    print(metaDiagnostics(newModel)) # display meta info, hint, warning, error, TODO values in this model
# print('check newModel.XML() serialization...')
newModelXML= newModel.XML() # test export method XML() for exceptions during export
newModel.XMLvalidate()
# print(newModelXML) # diagnostic

try:
#   print('check newModel.VRML() serialization...')
    newModelVRML=newModel.VRML() # test export method VRML() for exceptions during export
    # print(prependLineNumbers(newModelVRML)) # debug
    print("Python-to-VRML export of VRML output successful", flush=True)
except Exception as err: # usually BaseException
    # https://stackoverflow.com/questions/18176602/how-to-get-the-name-of-an-exception-that-was-caught-in-python
    print("*** Python-to-VRML export of VRML output failed:", type(err).__name__, err)
    if newModelVRML: # may have failed to generate
        print(prependLineNumbers(newModelVRML, err.lineno))

try:
#   print('check newModel.JSON() serialization...')
    newModelJSON=newModel.JSON() # test export method JSON() for exceptions during export
#   print(prependLineNumbers(newModelJSON)) # debug
    print("Python-to-JSON export of JSON output successful (under development)")
except Exception as err: # usually SyntaxError
    print("*** Python-to-JSON export of JSON output failed:", type(err).__name__, err)
    if newModelJSON: # may have failed to generate
        print(prependLineNumbers(newModelJSON,err.lineno))

print("python HelloWorld.py load and self-test diagnostics complete.")
===========================================
Loading local x3d.py package in python to check for correctness...
  then test HelloWorld.py execution and self-validation:
  python examples/HelloWorld.py
x3d.py package 4.0.64.4 loaded, have fun with X3D Graphics!
Self-test diagnostics for HelloWorld.py:
Python-to-XML well-formed XML document  test of XML output complete
Python-to-XML X3D 3.3 schema validation test of XML output complete
Python-to-VRML export of VRML output successful
Python-to-JSON export of JSON output successful (under development)
python HelloWorld.py load and self-test diagnostics complete.
convert.X3dToPython.xslt conversion of HelloWorld.x3d to HelloWorld.py complete.
===========================================
examples.HelloWorldX3D4:
set.local.PYTHONPATH:
local.PYTHONPATH=C:\x3d-code\www.web3d.org\x3d\stylesheets\python
convert.X3dToPython.xslt:
===========================================
Deleting C:\x3d-code\www.web3d.org\x3d\stylesheets\python\examples\HelloWorldX3D4.py
===========================================
convert.X3dToPython.xslt conversion of HelloWorldX3D4.x3d to HelloWorldX3D4.py complete.
####################################################################################################
#
# Now available: developmental python x3d.py package on PyPi for import.
#   This approach simplifies Python X3D deployment and use.
#   https://pypi.org/project/x3d
#
# Installation:
#       pip install x3d
# or
#       python -m pip install x3d
#
# Developer options for loading x3d package:
#
#    from x3d import *  # preferred approach, terser source that avoids x3d.* class prefixes
#
# or
#    import x3d         # traditional way to subclass x3d package, all classes require x3d.* prefix,
#                       # but python source is very verbose, for example x3d.Material x3d.Shape etc.
#                       # X3dToPython.xslt stylesheet insertPackagePrefix=true supports this option.
#
####################################################################################################

from x3d import *

newModel=X3D(profile='Immersive',version='4.0',
  head=head(
    children=[
    meta(content='HelloWorldX3D4.x3d',name='title'),
    meta(content='Test X3D version 4 with simple X3D model example: Hello World!',name='description'),
    meta(content='10 June 2021',name='created'),
    meta(content='18 September 2021',name='modified'),
    meta(content='Don Brutzman',name='creator'),
    meta(content='HelloWorld.tall.png',name='Image'),
    meta(content='https://en.wikipedia.org/wiki/Hello_world',name='reference'),
    meta(content='https://en.wikipedia.org/wiki/Hello#.22Hello.2C_World.22_computer_program',name='reference'),
    meta(content='https://en.wikipedia.org/wiki/"Hello,_World!"_program',name='reference'),
    meta(content='https://en.wikibooks.org/w/index.php?title=Computer_Programming/Hello_world',name='reference'),
    meta(content='https://www.HelloWorldExample.net',name='reference'),
    meta(content='https://www.web3d.org',name='reference'),
    meta(content='https://www.web3d.org/realtime-3d/news/internationalization-x3d',name='reference'),
    meta(content='https://www.web3d.org/x3d/content/examples/HelloWorld.x3d',name='reference'),
    meta(content='https://X3dGraphics.com/examples/X3dForAdvancedModeling/HelloWorldScenes/HelloWorld.x3d',name='reference'),
    meta(content='https://X3dGraphics.com/examples/X3dForAdvancedModeling/HelloWorldScenes/HelloWorldX3D4.x3d',name='identifier'),
    meta(content='https://www.web3d.org/x3d/content/examples/license.html',name='license'),
    meta(content='X3D-Edit 4.0, https://savage.nps.edu/X3D-Edit',name='generator'),
    meta(content='HelloWorld.wrl',name='reference'),
    meta(content='HelloWorldX3D4.x3dv',name='reference'),
    meta(content='HelloWorldX3D4.x3db',name='reference'),
    meta(content='HelloWorldX3D4.xhtml',name='reference'),
    meta(content='HelloWorldX3D4.json',name='reference')]),
  Scene=Scene(
    #  Example scene to illustrate X3D nodes and fields (XML elements and attributes) 
    children=[
    WorldInfo(DEF='WorldInfoPrimary',info=["Example scene to illustrate a simple X3D4 model"],title='Hello World!'),
    WorldInfo(DEF='WorldInfoSecondary',class_='TestClass',id_='TestID',style_='TestStyle',title='test HTML CSS fields'),
    Group(
      children=[
      Viewpoint(DEF='ViewUpClose',centerOfRotation=(0,-1,0),description='Hello world!',position=(0,-1,7)),
      Transform(rotation=(0,1,0,3),
        children=[
        Shape(
          geometry=Sphere(),
          appearance=Appearance(
            #  https://htmlcolorcodes.com/colors/off-white 
            material=Material(DEF='MaterialOffWhite',diffuseColor=(0.980392,0.976471,0.964706)),
            texture=ImageTexture(DEF='ImageCloudlessEarth',url=["earth-topo.png","earth-topo.jpg","earth-topo-small.gif","https://www.web3d.org/x3d/content/examples/Basic/earth-topo.png","https://www.web3d.org/x3d/content/examples/Basic/earth-topo.jpg","https://www.web3d.org/x3d/content/examples/Basic/earth-topo-small.gif"])))]),
      Transform(translation=(0,-2,0),
        children=[
        Shape(
          geometry=Text(DEF='TextMessage',string=["Hello","X3D 4!"],
            fontStyle=FontStyle(justify=["MIDDLE","MIDDLE"])),
          appearance=Appearance(
            material=Material(USE='MaterialOffWhite')))])])])
) # X3D model complete

####################################################################################################
# Self-test diagnostics
####################################################################################################

print('Self-test diagnostics for HelloWorldX3D4.py:')
if        metaDiagnostics(newModel): # built-in utility method in X3D class
    print(metaDiagnostics(newModel)) # display meta info, hint, warning, error, TODO values in this model
# print('check newModel.XML() serialization...')
newModelXML= newModel.XML() # test export method XML() for exceptions during export
newModel.XMLvalidate()
# print(newModelXML) # diagnostic

try:
#   print('check newModel.VRML() serialization...')
    newModelVRML=newModel.VRML() # test export method VRML() for exceptions during export
    # print(prependLineNumbers(newModelVRML)) # debug
    print("Python-to-VRML export of VRML output successful", flush=True)
except Exception as err: # usually BaseException
    # https://stackoverflow.com/questions/18176602/how-to-get-the-name-of-an-exception-that-was-caught-in-python
    print("*** Python-to-VRML export of VRML output failed:", type(err).__name__, err)
    if newModelVRML: # may have failed to generate
        print(prependLineNumbers(newModelVRML, err.lineno))

try:
#   print('check newModel.JSON() serialization...')
    newModelJSON=newModel.JSON() # test export method JSON() for exceptions during export
#   print(prependLineNumbers(newModelJSON)) # debug
    print("Python-to-JSON export of JSON output successful (under development)")
except Exception as err: # usually SyntaxError
    print("*** Python-to-JSON export of JSON output failed:", type(err).__name__, err)
    if newModelJSON: # may have failed to generate
        print(prependLineNumbers(newModelJSON,err.lineno))

print("python HelloWorldX3D4.py load and self-test diagnostics complete.")
===========================================
Loading local x3d.py package in python to check for correctness...
  then test HelloWorldX3D4.py execution and self-validation:
  python examples/HelloWorldX3D4.py
x3d.py package 4.0.64.4 loaded, have fun with X3D Graphics!
Self-test diagnostics for HelloWorldX3D4.py:
Python-to-XML well-formed XML document  test of XML output complete
Python-to-XML X3D 4.0 schema validation test of XML output complete
Python-to-VRML export of VRML output successful
Python-to-JSON export of JSON output successful (under development)
python HelloWorldX3D4.py load and self-test diagnostics complete.
convert.X3dToPython.xslt conversion of HelloWorldX3D4.x3d to HelloWorldX3D4.py complete.
===========================================
examples.BackgroundCollection:
set.local.PYTHONPATH:
local.PYTHONPATH=C:\x3d-code\www.web3d.org\x3d\stylesheets\python
convert.X3dToPython.xslt:
===========================================
Deleting C:\x3d-code\www.web3d.org\x3d\stylesheets\python\examples\BackgroundCollection.py
===========================================
convert.X3dToPython.xslt conversion of BackgroundCollection.x3d to BackgroundCollection.py complete.
####################################################################################################
#
# Now available: developmental python x3d.py package on PyPi for import.
#   This approach simplifies Python X3D deployment and use.
#   https://pypi.org/project/x3d
#
# Installation:
#       pip install x3d
# or
#       python -m pip install x3d
#
# Developer options for loading x3d package:
#
#    from x3d import *  # preferred approach, terser source that avoids x3d.* class prefixes
#
# or
#    import x3d         # traditional way to subclass x3d package, all classes require x3d.* prefix,
#                       # but python source is very verbose, for example x3d.Material x3d.Shape etc.
#                       # X3dToPython.xslt stylesheet insertPackagePrefix=true supports this option.
#
####################################################################################################

from x3d import *

newModel=X3D(profile='Interchange',version='3.3',
  head=head(
    children=[
    meta(content='BackgroundCollection.x3d',name='title'),
    meta(content='Collection of example Background nodes for author reuse, browse by selecting corresponding viewpoints.',name='description'),
    meta(content='28 December 2014',name='created'),
    meta(content='20 October 2019',name='modified'),
    meta(content='Don Brutzman',name='creator'),
    meta(content='https://www.web3d.org/x3d/content/examples/Basic/UniversalMediaPanoramas',name='reference'),
    meta(content='https://www.web3d.org/x3d/tooltips/X3dTooltips.html#Background',name='reference'),
    meta(content='https://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/enveffects.html#Background',name='reference'),
    meta(content='https://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/enveffects.html#Concepts',name='reference'),
    meta(content='https://x3dgraphics.com/slidesets/X3dForWebAuthors/Chapter11-LightingEnvironment.pdf',name='reference'),
    meta(content='https://x3dgraphics.com/examples/X3dForAdvancedModeling/Visualization/BackgroundCollection.x3d',name='identifier'),
    meta(content='https://www.web3d.org/x3d/content/examples/license.html',name='license'),
    meta(content='X3D-Edit 3.3, https://savage.nps.edu/X3D-Edit',name='generator')]),
  Scene=Scene(
    children=[
    WorldInfo(title='BackgroundCollection.x3d'),
    Group(DEF='AllLandBackgrounds',
      children=[
      Background(DEF='BlueSkyWhiteHorizonBrownLand',groundAngle=[1.309,1.5708],groundColor=[(0.5,0.3,0.3),(0.5,0.3,0.3),(0.5,0.4,0.4)],skyAngle=[1.309,1.572],skyColor=[(0,0.2,0.7),(0,0.5,1),(1,1,1)]),
      Viewpoint(DEF='BlueSkyWhiteHorizonBrownLandViewpoint',description='Blue Sky White Horizon Brown Land'),
      ROUTE(fromField='isBound',fromNode='BlueSkyWhiteHorizonBrownLandViewpoint',toField='set_bind',toNode='BlueSkyWhiteHorizonBrownLand')]),
    Group(DEF='AllSeaBackgrounds',
      children=[
      Background(DEF='BlueOceanWhiteHorizon',groundAngle=[1.309,1.570796],groundColor=[(0,0.3,.7),(0,0.35,0.75),(0,0.4,0.8)],skyAngle=[1.309,1.571],skyColor=[(0,0.3,0.8),(0,0.5,1),(1,1,1)]),
      Viewpoint(DEF='BlueOceanWhiteHorizonViewpoint',description='Blue Ocean White Horizon'),
      ROUTE(fromField='isBound',fromNode='BlueOceanWhiteHorizonViewpoint',toField='set_bind',toNode='BlueOceanWhiteHorizon'),
      Background(DEF='OvercastSkyBlueOcean',groundAngle=[0.1,1.5,1.56,1.570796],groundColor=[(0,0,0),(0,0.1,0.2),(0,0.1,0.2),(0,0.15,0.3),(0.1,0.1,0.1)],skyAngle=[0.1,1.4,1.5,1.565,1.57079],skyColor=[(0.1,0.1,0.1),(0.2,0.2,0.2),(0.2,0.2,0.2),(0,0.3804,0.4784),(0,0.2,0.4),(0.4,0.4,0.4)]),
      Viewpoint(DEF='OvercastSkyBlueOceanViewpoint',description='Overcast Sky Blue Ocean'),
      ROUTE(fromField='isBound',fromNode='OvercastSkyBlueOceanViewpoint',toField='set_bind',toNode='OvercastSkyBlueOcean'),
      Background(DEF='BlueSkyBlueOcean',groundAngle=[1.57079],groundColor=[(0,0.15,0.25),(0,0.15,0.25)],skyColor=[(0,0.3,0.5)]),
      Viewpoint(DEF='BlueSkyBlueOceanViewpoint',description='Blue Sky Blue Ocean'),
      ROUTE(fromField='isBound',fromNode='BlueSkyBlueOceanViewpoint',toField='set_bind',toNode='BlueSkyBlueOcean')]),
    Group(DEF='AllSkyBackgrounds',
      children=[
      Background(DEF='SimplyWhite',skyColor=[(1,1,1)]),
      Viewpoint(DEF='SimplyWhiteViewpoint',description='Simply White'),
      ROUTE(fromField='isBound',fromNode='SimplyWhiteViewpoint',toField='set_bind',toNode='SimplyWhite'),
      Background(DEF='SimplyGrey',skyColor=[(0.8,0.8,0.8)]),
      Viewpoint(DEF='SimplyGreyViewpoint',description='Simply Grey'),
      ROUTE(fromField='isBound',fromNode='SimplyGreyViewpoint',toField='set_bind',toNode='SimplyGrey'),
      Background(DEF='SimplyDarkGrey',skyColor=[(0.4,0.4,0.4)]),
      Viewpoint(DEF='SimplyDarkGreyViewpoint',description='Simply Dark Grey'),
      ROUTE(fromField='isBound',fromNode='SimplyDarkGreyViewpoint',toField='set_bind',toNode='SimplyDarkGrey'),
      Background(DEF='SimplyBlack'),
      Viewpoint(DEF='SimplyBlackViewpoint',description='Simply Black'),
      ROUTE(fromField='isBound',fromNode='SimplyBlackViewpoint',toField='set_bind',toNode='SimplyBlack')]),
    Group(DEF='AllVarietyBackgrounds',
      children=[
      Background(DEF='BackgroundTest1',groundAngle=[1,1.4,1.5],groundColor=[(0,0,0),(0.2157,1,0.1216),(0.5,0.5,0.5),(1,1,1)],skyAngle=[1,1.309,1.57079],skyColor=[(0,0,0),(0.1647,0.0588,1),(0.5,0.5,0.5),(1,1,1)]),
      Background(DEF='BackgroundTest2',groundAngle=[1,1.309],groundColor=[(0,0.3,.7),(0,0.35,0.75),(0,0.4,0.8)],skyAngle=[1.309,1.57079],skyColor=[(0,0.3,0.8),(0,0.5,1),(1,1,1)]),
      Background(DEF='BackgroundTest3',groundAngle=[1.57079],groundColor=[(0,0.15,0.25),(0,0.15,0.25)],skyColor=[(0,0.3,0.5)]),
      Background(DEF='BackgroundTest4',groundAngle=[1.57079],groundColor=[(0,0.15,0.25),(0,0.15,0.25)],skyColor=[(0,0.3,0.5)]),
      Viewpoint(DEF='ViewpointTest1',description='Test1'),
      ROUTE(fromField='isBound',fromNode='ViewpointTest1',toField='set_bind',toNode='BackgroundTest1'),
      Viewpoint(DEF='ViewpointTest2',description='Test2'),
      ROUTE(fromField='isBound',fromNode='ViewpointTest2',toField='set_bind',toNode='BackgroundTest2'),
      Viewpoint(DEF='ViewpointTest3',description='Test3'),
      ROUTE(fromField='isBound',fromNode='ViewpointTest3',toField='set_bind',toNode='BackgroundTest3'),
      Viewpoint(DEF='ViewpointTest4',description='Test4'),
      ROUTE(fromField='isBound',fromNode='ViewpointTest4',toField='set_bind',toNode='BackgroundTest4')]),
    Group(DEF='UnboundViewpoints',
      #  The final two viewpoints are not separately bound and can be selected to check any of the other Background nodes 
      children=[
      Viewpoint(description='Looking up at current Background zenith',orientation=(1,0,0,1.570796)),
      Viewpoint(description='Looking down at current Background nadir',orientation=(1,0,0,-1.570796))])])
) # X3D model complete

####################################################################################################
# Self-test diagnostics
####################################################################################################

print('Self-test diagnostics for BackgroundCollection.py:')
if        metaDiagnostics(newModel): # built-in utility method in X3D class
    print(metaDiagnostics(newModel)) # display meta info, hint, warning, error, TODO values in this model
# print('check newModel.XML() serialization...')
newModelXML= newModel.XML() # test export method XML() for exceptions during export
newModel.XMLvalidate()
# print(newModelXML) # diagnostic

try:
#   print('check newModel.VRML() serialization...')
    newModelVRML=newModel.VRML() # test export method VRML() for exceptions during export
    # print(prependLineNumbers(newModelVRML)) # debug
    print("Python-to-VRML export of VRML output successful", flush=True)
except Exception as err: # usually BaseException
    # https://stackoverflow.com/questions/18176602/how-to-get-the-name-of-an-exception-that-was-caught-in-python
    print("*** Python-to-VRML export of VRML output failed:", type(err).__name__, err)
    if newModelVRML: # may have failed to generate
        print(prependLineNumbers(newModelVRML, err.lineno))

try:
#   print('check newModel.JSON() serialization...')
    newModelJSON=newModel.JSON() # test export method JSON() for exceptions during export
#   print(prependLineNumbers(newModelJSON)) # debug
    print("Python-to-JSON export of JSON output successful (under development)")
except Exception as err: # usually SyntaxError
    print("*** Python-to-JSON export of JSON output failed:", type(err).__name__, err)
    if newModelJSON: # may have failed to generate
        print(prependLineNumbers(newModelJSON,err.lineno))

print("python BackgroundCollection.py load and self-test diagnostics complete.")
===========================================
Loading local x3d.py package in python to check for correctness...
  then test BackgroundCollection.py execution and self-validation:
  python examples/BackgroundCollection.py
x3d.py package 4.0.64.4 loaded, have fun with X3D Graphics!
Self-test diagnostics for BackgroundCollection.py:
Python-to-XML well-formed XML document  test of XML output complete
Python-to-XML X3D 3.3 schema validation test of XML output complete
Python-to-VRML export of VRML output successful
Python-to-JSON export of JSON output successful (under development)
python BackgroundCollection.py load and self-test diagnostics complete.
convert.X3dToPython.xslt conversion of BackgroundCollection.x3d to BackgroundCollection.py complete.
===========================================
examples.MaterialModulator:
set.local.PYTHONPATH:
local.PYTHONPATH=C:\x3d-code\www.web3d.org\x3d\stylesheets\python
convert.X3dToPython.xslt:
===========================================
Deleting C:\x3d-code\www.web3d.org\x3d\stylesheets\python\examples\MaterialModulator.py
===========================================
convert.X3dToPython.xslt conversion of MaterialModulator.x3d to MaterialModulator.py complete.
####################################################################################################
#
# Now available: developmental python x3d.py package on PyPi for import.
#   This approach simplifies Python X3D deployment and use.
#   https://pypi.org/project/x3d
#
# Installation:
#       pip install x3d
# or
#       python -m pip install x3d
#
# Developer options for loading x3d package:
#
#    from x3d import *  # preferred approach, terser source that avoids x3d.* class prefixes
#
# or
#    import x3d         # traditional way to subclass x3d package, all classes require x3d.* prefix,
#                       # but python source is very verbose, for example x3d.Material x3d.Shape etc.
#                       # X3dToPython.xslt stylesheet insertPackagePrefix=true supports this option.
#
####################################################################################################

from x3d import *

newModel=X3D(profile='Immersive',version='3.3',
  head=head(
    children=[
    meta(content='MaterialModulator.x3d',name='title'),
    meta(content='Mimic a Material node and modulate the diffuseColor field as an animation effect, provided as a prototype for reusability.',name='description'),
    meta(content='Learning suggestion for authors: try changing the modulation script so that it goes from [0 ... 1] and then [1 ... 0] alternating, rather than abruptly shifting from 1 immediately back to 0.',name='hint'),
    meta(content='Don Brutzman',name='creator'),
    meta(content='10 March 2008',name='created'),
    meta(content='20 October 2019',name='modified'),
    meta(content='X3D prototype requiring Script inputOutput fields',name='subject'),
    meta(content='MaterialModulator.png',name='Image'),
    meta(content='https://X3dGraphics.com/examples/X3dForWebAuthors/Chapter14Prototypes/MaterialModulator.x3d',name='identifier'),
    meta(content='X3D-Edit 3.3, https://savage.nps.edu/X3D-Edit',name='generator'),
    meta(content='../license.html',name='license')]),
  Scene=Scene(
    children=[
    WorldInfo(title='MaterialModulator.x3d'),
    ProtoDeclare(appinfo='mimic a Material node and modulate the diffuseColor field as an animation effect',documentation='https://x3dgraphics.com/examples/X3dForWebAuthors/Chapter14Prototypes/MaterialModulatorIndex.html',name='MaterialModulator',
      ProtoInterface=ProtoInterface(
        field=[
        field(accessType='inputOutput',appinfo='default value true',name='enabled',type='SFBool',value=True),
        field(accessType='inputOutput',appinfo='default value 0.8 0.8 0.8',name='diffuseColor',type='SFColor',value=(0.8,0.8,0.8)),
        field(accessType='inputOutput',appinfo='default value 0 0 0',name='emissiveColor',type='SFColor',value=(0,0,0)),
        field(accessType='inputOutput',appinfo='default value 0 0 0',name='specularColor',type='SFColor',value=(0,0,0)),
        field(accessType='inputOutput',appinfo='default value 0.0',name='transparency',type='SFFloat',value=0.0),
        field(accessType='inputOutput',appinfo='default value 0.2',name='shininess',type='SFFloat',value=0.2),
        field(accessType='inputOutput',appinfo='default value 0.2',name='ambientIntensity',type='SFFloat',value=0.2)]),
      ProtoBody=ProtoBody(
        children=[
        Material(DEF='MaterialNode',
          IS=IS(
            connect=[
            connect(nodeField='diffuseColor',protoField='diffuseColor'),
            connect(nodeField='emissiveColor',protoField='emissiveColor'),
            connect(nodeField='specularColor',protoField='specularColor'),
            connect(nodeField='transparency',protoField='transparency'),
            connect(nodeField='shininess',protoField='shininess'),
            connect(nodeField='ambientIntensity',protoField='ambientIntensity')])),
        #  Only first node (the node type) is renderable, others are along for the ride 
        Script(DEF='MaterialModulatorScript',
          field=[
          field(accessType='inputOutput',name='enabled',type='SFBool'),
          field(accessType='inputOutput',name='diffuseColor',type='SFColor'),
          field(accessType='outputOnly',name='newColor',type='SFColor'),
          field(accessType='inputOnly',name='clockTrigger',type='SFTime')],
          IS=IS(
            connect=[
            connect(nodeField='enabled',protoField='enabled'),
            connect(nodeField='diffuseColor',protoField='diffuseColor')]),

        sourceCode="""
ecmascript:
function initialize ()
{
    newColor = diffuseColor; // start with original color
}
function clockTrigger (timeValue)
{
    if (!enabled) return;
    red   = newColor.r;
    green = newColor.g;
    blue  = newColor.b;
    
    // note different modulation rates for each color component, % is modulus operator
    newColor = new SFColor ((red + 0.02) % 1, (green + 0.03) % 1, (blue + 0.04) % 1);
	if (enabled)
	{
		Browser.print ('diffuseColor=(' + red +',' + green + ',' + blue + ') newColor=' + newColor.toString() + '\n');
	}
}
function set_enabled (newValue)
{
	enabled = newValue;
}
"""),
        #  Clock tickles Script to wake up and compute a new value 
        ROUTE(fromField='newColor',fromNode='MaterialModulatorScript',toField='diffuseColor',toNode='MaterialNode'),
        TimeSensor(DEF='ModulationClock',cycleInterval=0.1,loop=True,
          IS=IS(
            connect=[
            connect(nodeField='enabled',protoField='enabled')])),
        ROUTE(fromField='cycleTime',fromNode='ModulationClock',toField='clockTrigger',toNode='MaterialModulatorScript')])),
    #  Rendered geometry for the ProtoInstance now follows prototype declaration 
    Transform(translation=(0,1,0),
      children=[
      Shape(
        geometry=Sphere(),
        appearance=Appearance(
          material=ProtoInstance(DEF='MaterialModulatorInstance',name='MaterialModulator',
            fieldValue=[
            fieldValue(name='enabled',value=True),
            fieldValue(name='diffuseColor',value=(0.5,0.1,0.1))]
            #  fieldValue declarations for other Material attributes can appear here 
            )))]),
    #  Selectable Text design pattern has transparent Box and TouchSensor description as a tooltip 
    Transform(translation=(0,-2,0),
      children=[
      Shape(
        geometry=Text(string=["enable/disable","MaterialModulator"],
          fontStyle=FontStyle(family=["SANS"],justify=["MIDDLE","MIDDLE"],style_='BOLD')),
        appearance=Appearance(
          material=Material(diffuseColor=(0.9,0.9,0.9)))),
      Shape(
        geometry=Box(size=(8,2,.001)),
        appearance=Appearance(
          material=Material(transparency=1))),
      #  Toggle text to enable/disable MaterialModulator 
      TouchSensor(DEF='TouchTextInterface',description='Select to enable/disable MaterialModulator'),
      BooleanToggle(DEF='EventToggler'),
      ROUTE(fromField='isActive',fromNode='TouchTextInterface',toField='set_boolean',toNode='EventToggler'),
      ROUTE(fromField='toggle',fromNode='EventToggler',toField='enabled',toNode='MaterialModulatorInstance')])])
) # X3D model complete

####################################################################################################
# Self-test diagnostics
####################################################################################################

print('Self-test diagnostics for MaterialModulator.py:')
if        metaDiagnostics(newModel): # built-in utility method in X3D class
    print(metaDiagnostics(newModel)) # display meta info, hint, warning, error, TODO values in this model
# print('check newModel.XML() serialization...')
newModelXML= newModel.XML() # test export method XML() for exceptions during export
newModel.XMLvalidate()
# print(newModelXML) # diagnostic

try:
#   print('check newModel.VRML() serialization...')
    newModelVRML=newModel.VRML() # test export method VRML() for exceptions during export
    # print(prependLineNumbers(newModelVRML)) # debug
    print("Python-to-VRML export of VRML output successful", flush=True)
except Exception as err: # usually BaseException
    # https://stackoverflow.com/questions/18176602/how-to-get-the-name-of-an-exception-that-was-caught-in-python
    print("*** Python-to-VRML export of VRML output failed:", type(err).__name__, err)
    if newModelVRML: # may have failed to generate
        print(prependLineNumbers(newModelVRML, err.lineno))

try:
#   print('check newModel.JSON() serialization...')
    newModelJSON=newModel.JSON() # test export method JSON() for exceptions during export
#   print(prependLineNumbers(newModelJSON)) # debug
    print("Python-to-JSON export of JSON output successful (under development)")
except Exception as err: # usually SyntaxError
    print("*** Python-to-JSON export of JSON output failed:", type(err).__name__, err)
    if newModelJSON: # may have failed to generate
        print(prependLineNumbers(newModelJSON,err.lineno))

print("python MaterialModulator.py load and self-test diagnostics complete.")
===========================================
Loading local x3d.py package in python to check for correctness...
  then test MaterialModulator.py execution and self-validation:
  python examples/MaterialModulator.py
x3d.py package 4.0.64.4 loaded, have fun with X3D Graphics!
Self-test diagnostics for MaterialModulator.py:
meta information, hint: Learning suggestion for authors: try changing the modulation script so that it goes from [0 ... 1] and then [1 ... 0] alternating, rather than abruptly shifting from 1 immediately back to 0.
Python-to-XML well-formed XML document  test of XML output complete
Python-to-XML X3D 3.3 schema validation test of XML output complete
Python-to-VRML export of VRML output successful
Python-to-JSON export of JSON output successful (under development)
python MaterialModulator.py load and self-test diagnostics complete.
convert.X3dToPython.xslt conversion of MaterialModulator.x3d to MaterialModulator.py complete.
===========================================
set.local.PYTHONPATH:
local.PYTHONPATH=C:\x3d-code\www.web3d.org\x3d\stylesheets\python
examples.NumpyExample:
Create .x3d model by running NumpyExample.py in python using numpy and local build of Python x3d package
  python examples/NumpyExample.py
x3d.py package 4.0.64.4 loaded, have fun with X3D Graphics!
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.3//EN" "https://www.web3d.org/specifications/x3d-3.3.dtd">
<X3D profile='Immersive' version='3.3' xmlns:xsd='http://www.w3.org/2001/XMLSchema-instance' xsd:noNamespaceSchemaLocation='https://www.web3d.org/specifications/x3d-3.3.xsd'>
  <head>
    <meta content='NumpyExample.x3d' name='title'/>
    <meta content='example of using Numpy library to generate coordinate geometry and color' name='description'/>
    <meta content='24 Feb 2022' name='created'/>
    <meta content='Vince Marchetti' name='creator'/>
    <meta content='https://www.web3d.org/x3d/content/examples/license.html' name='license'/>
  </head>
  <Scene>
    <WorldInfo title='NumpyExample.x3d'/>
    <Viewpoint DEF='ViewUpClose' description='Initial Viewpoint'/>
    <Shape>
      <IndexedTriangleSet index='0 1 2 0 2 3 0 3 1 3 2 1'>
        <Color color='1.0 1.0 0.4 0.7 0.4 1.0 0.0 0.8 0.0 1.0 0.8 0.9'/>
        <Coordinate point='0.0 2.0 0.0 -1.632 -0.688 0.942 1.632 -0.688 0.942 0.0 -0.688 -1.884'/>
      </IndexedTriangleSet>
    </Shape>
  </Scene>
</X3D>

test.X3dToPython.SmokeTests complete.
===========================================
build.examples:
BUILD SUCCESSFUL (total time: 1 minute 4 seconds)