<X3D>
<head>
<meta
name='filename'
content='ExampleOrientationInterpolationSpinner.xml'/>
<meta
name='author'
content='Don Brutzman'/>
<meta
name='revised'
content='14 April 2000'/>
<meta
name='description'
content='Look at isomorphism between OrientationInterpolator and a simple PROTO-ization'/>
<meta
name='url'
content='http://www.web3d.org/TaskGroups/x3d/translation/examples/ExampleOrientationInterpolationSpinner.xml'/>
<meta
name='generator'
content='X3D-Edit, http://www.web3d.org/TaskGroups/x3d/translation/README.X3D-Edit.html'/>
</head>
<Scene>
<ProtoDeclare
name='ExampleOrientationInterpolationSpinner'>
<field
IS='OI.key'
name='key'
type='Floats'
value='0.0, 0.50, 1.0'
vrml97Hint='exposedField' Next example. -->
GeoVrmlExample1 is a simple example showing
how to use the proposed GeoVrml protos in a scene.
| GeoVrmlExample1.xml,
GeoVrmlExample1.html |
GeoVrmlExample1.wrl |
<X3D>
<head>
<meta
name='filename'
content='GeoVrmlExample1.xml'/>
<meta
name='URL'
content='http://www.web3d.org/TaskGroups/x3d/translation/examples/GeoVrmlExample1.xml'/>
<meta
name='description'
content='GeoVrml 1.0 Example 1- GeoElevation'/>
<meta
name='reference'
content='http://www.ai.sri.com/geovrml/1.0/doc'/>
<meta
name='author'
content='Don Brutzman'/>
<meta
name='revised'
content='8 January 2000'/>
<meta
name='generator'
content='X3D-Edit, http://www.web3d.org/TaskGroups/x3d/translation/README.X3D-Edit.html'/>
</head>
<Scene>
<ExternProtoDeclare
name='GeoCoordinate'
nodeTypeHint='Coordinate'
url='http://www.ai.sri.com/geovrml/1.0/protos/GeoCoordinate.wrl'>
<field
name='geoOrigin'
type='Node'/>
<field
name='geoSystem'
type='Strings'/>
<field
name='point'
type='Strings'/>
</ExternProtoDeclare>
<ExternProtoDeclare
name='GeoElevationGrid'
nodeTypeHint='ElevationGrid'
url='http://www.ai.sri.com/geovrml/1.0/protos/GeoElevationGrid.wrl'>
<field
name='geoOrigin'
type='Node'/>
<field
name='geoSystem'
type='Strings'/>
<field
name='geoGridOrigin'
type='String'/>
<field
name='xDimension'
type='Integer'/>
<field
name='xSpacing'
type='String'/>
<field
name='zDimension'
type='Integer'/>
<field
name='zSpacing'
type='String'/>
<field
name='yScale'
type='Float'/>
<field
name='height'
type='Floats'/>
<field
name='color'
type='Node'/>
<field
name='texCoord'
type='Node'/>
<field
name='normal'
type='Node'/>
<field
name='normalPerVertex'
type='Boolean'/>
<field
name='ccw'
type='Boolean'/>
<field
name='colorPerVertex'
type='Boolean'/>
<field
name='creaseAngle'
type='Float'/>
<field
name='solid'
type='Boolean'/>
</ExternProtoDeclare>
<ExternProtoDeclare
name='GeoInline'
nodeTypeHint='Inline'
url='http://www.ai.sri.com/geovrml/1.0/protos/GeoInline.wrl'>
<field
name='url'
type='Strings'/>
<field
name='url_changed'
type='Strings'/>
<field
name='load'
type='Boolean'/>
<field
name='load_changed'
type='Boolean'/>
<field
name='bboxCenter'
type='Vector3'/>
<field
name='bboxSize'
type='Vector3'/>
</ExternProtoDeclare>
<ExternProtoDeclare
name='GeoLocation'
nodeTypeHint='Transform'
url='http://www.ai.sri.com/geovrml/1.0/protos/GeoLocation.wrl'>
<field
name='geoOrigin'
type='Node'/>
<field
name='geoSystem'
type='Strings'/>
<field
name='geoCoords'
type='String'/>
</ExternProtoDeclare>
<ExternProtoDeclare
name='GeoLOD'
nodeTypeHint='LOD'
url='http://www.ai.sri.com/geovrml/1.0/protos/GeoMetadata.wrl'>
<field
name='parentUrl'
type='Strings'/>
<field
name='parentNode'
type='Nodes'/>
<field
name='child1Url'
type='Strings'/>
<field
name='child2Url'
type='Strings'/>
<field
name='child3Url'
type='Strings'/>
<field
name='child4Url'
type='Strings'/>
<field
name='range'
type='Float'/>
<field
name='geoOrigin'
type='Node'/>
<field
name='geoSystem'
type='Strings'/>
<field
name='center'
type='String'/>
</ExternProtoDeclare>
<ExternProtoDeclare
name='GeoMetadata'
nodeTypeHint='WorldInfo'
url='http://www.ai.sri.com/geovrml/1.0/protos/GeoMetadata.wrl'>
<field
name='url'
type='Strings'/>
<field
name='summary'
type='Strings'/>
<field
name='data'
type='Nodes'/>
</ExternProtoDeclare>
<ExternProtoDeclare
name='GeoOrigin'
nodeTypeHint='Group'
url='http://www.ai.sri.com/geovrml/1.0/protos/GeoOrigin.wrl'>
<field
name='geoSystem'
type='Strings'/>
<field
name='geoCoords'
type='String'/>
</ExternProtoDeclare>
<ExternProtoDeclare
name='GeoPositionInterpolator'
nodeTypeHint='PositionInterpolator'
url='http://www.ai.sri.com/geovrml/1.0/protos/GeoPositionInterpolator.wrl'>
<field
name='geoOrigin'
type='Node'/>
<field
name='geoSystem'
type='Strings'/>
<field
name='key'
type='Floats'/>
<field
name='keyValue'
type='Strings'/>
<field
name='set_fraction'
type='Float'/>
<field
name='value_changed'
type='Vector3'/>
<field
name='geovalue_changed'
type='String'/>
</ExternProtoDeclare>
<ExternProtoDeclare
name='GeoViewpoint'
nodeTypeHint='Viewpoint'
url='http://www.ai.sri.com/geovrml/1.0/protos/GeoViewpoint.wrl'>
<field
name='geoOrigin'
type='Node'/>
<field
name='geoSystem'
type='Strings'/>
<field
name='position'
type='String'/>
<field
name='orientation'
type='Rotation'/>
<field
name='fieldOfView'
type='Float'/>
<field
name='jump'
type='Boolean'/>
<field
name='navType'
type='Strings'/>
<field
name='description'
type='String'/>
<field
name='speed'
type='Float'/>
<field
name='set_bind'
type='Boolean'/>
<field
name='bindTime'
type='Time'/>
<field
name='isBound'
type='Boolean'/>
</ExternProtoDeclare>
<Group>
<children><Background
groundColor='0 0 0'
skyColor='0.1 0.1 0.8'/>
<ProtoInstance
name='GeoViewpoint'>
<fieldValue
fieldName='geoSystem'
value='"GDC"'/>
<fieldValue
fieldName='position'
value='"35.0 70.0 10000000"'/>
<fieldValue
fieldName='orientation'
value='1 0 0 -1.57'/>
<fieldValue
fieldName='description'
value='"Initial GeoViewpoint"'/>
</ProtoInstance>
<Shape>
<appearance><Appearance>
<material><Material
diffuseColor='0.3 1.0 0.3'/>
</material>
</Appearance>
</appearance>
<geometry><ProtoInstance
name='GeoElevationGrid'>
<fieldValue
fieldName='geoSystem'
value='"GDC"'/>
<fieldValue
fieldName='geoGridOrigin'
value='-90 -180 0'/>
<fieldValue
fieldName='xDimension'
value='21'/>
<fieldValue
fieldName='zDimension'
value='11'/>
<fieldValue
fieldName='xSpacing'
value='18'/>
<fieldValue
fieldName='zSpacing'
value='18'/>
<fieldValue
fieldName='yScale'
value='200'/>
<fieldValue
fieldName='height'
value='0 0 0 0 0 0'/>
<-- # extremely long array omitted here, see source... -->
</ProtoInstance>
</geometry>
</Shape>
</children>
</Group>
</Scene>
</X3D>
<-- Tag color codes: <field> <NodeName attribute='value'/> </field> -->
|
#VRML V2.0 utf8
# X3D-to-VRML-97 XSL translation autogenerated by X3dToVrml97.xsl
# http://www.web3D.org/TaskGroups/x3d/translation/X3dToVrml97.xsl
# [X3D]
# [Header]
# [meta] filename: GeoVrmlExample1.xml
# [meta] URL: http://www.web3d.org/TaskGroups/x3d/translation/examples/GeoVrmlExample1.xml
# [meta] description: GeoVrml 1.0 Example 1- GeoElevation
# [meta] reference: http://www.ai.sri.com/geovrml/1.0/doc
# [meta] author: Don Brutzman
# [meta] revised: 8 January 2000
# [meta] generator: X3D-Edit, http://www.web3d.org/TaskGroups/x3d/translation/README.X3D-Edit.html
# [Scene]
EXTERNPROTO GeoCoordinate [
# nodeTypeHint Coordinate
exposedField SFNode geoOrigin
exposedField MFString geoSystem
exposedField MFString point
][
"http://www.ai.sri.com/geovrml/1.0/protos/GeoCoordinate.wrl"
]
EXTERNPROTO GeoElevationGrid [
# nodeTypeHint ElevationGrid
exposedField SFNode geoOrigin
exposedField MFString geoSystem
exposedField SFString geoGridOrigin
exposedField SFInt32 xDimension
exposedField SFString xSpacing
exposedField SFInt32 zDimension
exposedField SFString zSpacing
exposedField SFFloat yScale
exposedField MFFloat height
exposedField SFNode color
exposedField SFNode texCoord
exposedField SFNode normal
exposedField SFBool normalPerVertex
exposedField SFBool ccw
exposedField SFBool colorPerVertex
exposedField SFFloat creaseAngle
exposedField SFBool solid
][
"http://www.ai.sri.com/geovrml/1.0/protos/GeoElevationGrid.wrl"
]
EXTERNPROTO GeoInline [
# nodeTypeHint Inline
exposedField MFString url
exposedField MFString url_changed
exposedField SFBool load
exposedField SFBool load_changed
exposedField SFVec3f bboxCenter
exposedField SFVec3f bboxSize
][
"http://www.ai.sri.com/geovrml/1.0/protos/GeoInline.wrl"
]
EXTERNPROTO GeoLocation [
# nodeTypeHint Transform
exposedField SFNode geoOrigin
exposedField MFString geoSystem
exposedField SFString geoCoords
][
"http://www.ai.sri.com/geovrml/1.0/protos/GeoLocation.wrl"
]
EXTERNPROTO GeoLOD [
# nodeTypeHint LOD
exposedField MFString parentUrl
exposedField MFNode parentNode
exposedField MFString child1Url
exposedField MFString child2Url
exposedField MFString child3Url
exposedField MFString child4Url
exposedField SFFloat range
exposedField SFNode geoOrigin
exposedField MFString geoSystem
exposedField SFString center
][
"http://www.ai.sri.com/geovrml/1.0/protos/GeoMetadata.wrl"
]
EXTERNPROTO GeoMetadata [
# nodeTypeHint WorldInfo
exposedField MFString url
exposedField MFString summary
exposedField MFNode data
][
"http://www.ai.sri.com/geovrml/1.0/protos/GeoMetadata.wrl"
]
EXTERNPROTO GeoOrigin [
# nodeTypeHint Group
exposedField MFString geoSystem
exposedField SFString geoCoords
][
"http://www.ai.sri.com/geovrml/1.0/protos/GeoOrigin.wrl"
]
EXTERNPROTO GeoPositionInterpolator [
# nodeTypeHint PositionInterpolator
exposedField SFNode geoOrigin
exposedField MFString geoSystem
exposedField MFFloat key
exposedField MFString keyValue
exposedField SFFloat set_fraction
exposedField SFVec3f value_changed
exposedField SFString geovalue_changed
][
"http://www.ai.sri.com/geovrml/1.0/protos/GeoPositionInterpolator.wrl"
]
EXTERNPROTO GeoViewpoint [
# nodeTypeHint Viewpoint
exposedField SFNode geoOrigin
exposedField MFString geoSystem
exposedField SFString position
exposedField SFRotation orientation
exposedField SFFloat fieldOfView
exposedField SFBool jump
exposedField MFString navType
exposedField SFString description
exposedField SFFloat speed
exposedField SFBool set_bind
exposedField SFTime bindTime
exposedField SFBool isBound
][
"http://www.ai.sri.com/geovrml/1.0/protos/GeoViewpoint.wrl"
]
Group {
children [
Background {
groundColor [ 0 0 0 ]
skyColor [ 0.1 0.1 0.8 ]
}
GeoViewpoint {
geoSystem [ "GDC" ]
position "35.0 70.0 10000000"
orientation 1 0 0 -1.57
description "Initial GeoViewpoint"
}
Shape {
appearance Appearance {
material Material {
diffuseColor 0.3 1.0 0.3
}
}
geometry GeoElevationGrid {
geoSystem [ "GDC" ]
geoGridOrigin "-90 -180 0"
xDimension 21
zDimension 11
xSpacing "18"
zSpacing "18"
yScale 200
height [ 0 0 0 0 0 0 ] # extremely long array omitted here, see source...
}
}
]
}
|
HelloWorld is the simple canonical language example for X3D and VRML.
|
HelloWorld.xml,
HelloWorld.html |
HelloWorld.wrl,
HelloWorldTranslated.wrl |
<X3D>
<head>
<meta
name='filename'
content='HelloWorld.xml'/>
<meta
name='description'
content='Simple X3D example'/>
<meta
name='revised'
content='31 January 2000'/>
<meta
name='author'
content='Don Brutzman'/>
<meta
name='url'
content='http://www.web3D.org/TaskGroups/x3d/translation/examples/HelloWorld.xml'/>
<meta
name='generator'
content='X3D-Edit, http://www.web3d.org/TaskGroups/x3d/translation/README.X3D-Edit.html'/>
</head>
<Scene>
<Group>
<children><Viewpoint
description='hello, world!'
orientation='0.0 1.0 0.0 1.57'
position='6.0 -1.0 0.0'/>
<NavigationInfo
type='"EXAMINE" "ANY"'/>
<Shape>
<geometry><Sphere/>
</geometry>
<appearance><Appearance>
<texture><ImageTexture
url='"earth-topo.png"
"earth-topo-small.gif"
"http://www.web3D.org/TaskGroups/x3d/translation/earth-topo.png"
"http://www.web3D.org/TaskGroups/x3d/translation/earth-topo-small.gif"'/>
</texture>
</Appearance>
</appearance>
</Shape>
<Transform
rotation='0.0 1.0 0.0 1.57'
translation='0.0 -2.0 1.25'>
<children><Shape>
<geometry><Text
string='"Hello" "world!"'/>
</geometry>
<appearance><Appearance>
<material><Material
diffuseColor='0.1 0.5 1.0'/>
</material>
</Appearance>
</appearance>
</Shape>
</children>
</Transform>
</children>
</Group>
</Scene>
</X3D>
<-- Tag color codes: <field> <NodeName attribute='value'/> </field> -->
|
#VRML V2.0 utf8
# X3D-to-VRML-97 XSL translation autogenerated by X3dToVrml97.xsl
# http://www.web3D.org/TaskGroups/x3d/translation/X3dToVrml97.xsl
# [X3D]
# [Header]
# [meta] filename: HelloWorld.xml
# [meta] description: Simple X3D example
# [meta] revised: 31 January 2000
# [meta] author: Don Brutzman
# [meta] url: http://www.web3D.org/TaskGroups/x3d/translation/examples/HelloWorld.xml
# [meta] generator: X3D-Edit, http://www.web3d.org/TaskGroups/x3d/translation/README.X3D-Edit.html
# [Scene]
Group {
children [
Viewpoint {
description "hello, world!"
orientation 0.0 1.0 0.0 1.57
position 6.0 -1.0 0.0
}
NavigationInfo {
type [ "EXAMINE" "ANY" ]
}
Shape {
geometry Sphere {
}
appearance Appearance {
texture ImageTexture {
url [ "earth-topo.png"
"earth-topo-small.gif"
"http://www.web3D.org/TaskGroups/x3d/translation/earth-topo.png"
"http://www.web3D.org/TaskGroups/x3d/translation/earth-topo-small.gif" ]
}
}
}
Transform {
children [
Shape {
geometry Text {
string [ "Hello" "world!" ]
}
appearance Appearance {
material Material {
diffuseColor 0.1 0.5 1.0
}
}
}
]
rotation 0.0 1.0 0.0 1.57
translation 0.0 -2.0 1.25
}
]
}
|
newScene is a simple starter scene for new X3D content.
(Note that DTD-fragment prolog sections are not always presented by XML viewers,
you may need to view the XML source.)
|
newScene.xml,
newScene.html |
newScene.wrl |
<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE X3D PUBLIC
"http://www.web3D.org/TaskGroups/x3d/translation/x3d-compromise.dtd"
"file://localhost/C:/www.web3D.org/TaskGroups/x3d/translation/x3d-compromise.dtd" [
<!ENTITY % Vrml97Profile "INCLUDE">
<!ENTITY % CoreProfile "IGNORE">
<!ENTITY % X3dExtensions "IGNORE">
<!ENTITY % GeoVrmlProfile "IGNORE">
]>
<X3D>
<head>
<meta
name='filename'
content='*enter filename here*'/>
<meta
name='author'
content='*enter name here*'/>
<meta
name='revised'
content='*enter date here*'/>
<meta
name='description'
content='*enter description here*'/>
<meta
name='url'
content='*enter url address here*'/>
<meta
name='generator'
content='X3D-Edit, http://www.web3D.org/TaskGroups/x3d/translation/README.X3D-Edit.html'/>
</head>
<Scene>
<-- Scene nodes are added here -->
</Scene>
</X3D>
<-- Tag color codes: <NodeName attribute='value'/> -->
|
#VRML V2.0 utf8
# X3D-to-VRML-97 XSL translation autogenerated by X3dToVrml97.xsl
# http://www.web3D.org/TaskGroups/x3d/translation/X3dToVrml97.xsl
# [X3D]
# [Header]
# [meta] filename: *enter filename here*
# [meta] author: *enter name here*
# [meta] revised: *enter date here*
# [meta] description: *enter description here*
# [meta] url: *enter url address here*
# [meta] generator: X3D-Edit, http://www.web3D.org/TaskGroups/x3d/translation/README.X3D-Edit.html
# [Scene]
# Scene nodes are added here
|
Orbiter
is a fun scene that exercises some MFFloat fields. Click and view the VRML version!
| Orbiter.xml,
Orbiter.html |
Orbiter.wrl |
<X3D>
<head>
<meta
name='filename'
content='Orbiter.xml'/>
<meta
name='author'
content='Don Brutzman'/>
<meta
name='revised'
content='9 January 2000'/>
<meta
name='description'
content='A representative VRML/X3D scene graph fragment to demonstrate schema suitability for X3D'/>
<meta
name='url'
content='http://www.web3D.org/TaskGroups/x3d/translation/examples/Orbiter.xml'/>
<meta
name='generator'
content='X3D-Edit, http://www.web3D.org/TaskGroups/x3d/translation/README.X3D-Edit.html'/>
</head>
<Scene>
<WorldInfo
info='how well do schemas handle this simple world without data typing for arrays?'
title='Orbiter.xml'/>
<Viewpoint
description='Hello, world'
orientation='0 1 0 3.14159'
position='0 0 -8'/>
<NavigationInfo
type='"EXAMINE" "ANY"'/>
<Transform
DEF='EarthCoordinateSystem'>
<children><Group
DEF='MiniWorld'>
<children><Shape>
<appearance><Appearance>
<texture><ImageTexture
url='"earth-topo.png"
"earth-topo.gif"
"http://www.web3d.org/TaskGroups/x3d/translation/earth-topo.png"
"http://www.web3d.org/TaskGroups/x3d/translation/earth-topo.gif"'/>
</texture>
</Appearance>
</appearance>
<geometry><Sphere/>
</geometry>
</Shape>
</children>
</Group>
<Transform
DEF='SimpleGeoStationarySatellite'
rotation='1 0 0 .3'
scale='0.1 0.3 0.1'
translation='0 0 5'>
<children><Shape>
<appearance><Appearance>
<material><Material
diffuseColor='0.9 0.1 0.1'/>
</material>
</Appearance>
</appearance>
<geometry><Box/>
</geometry>
</Shape>
</children>
</Transform>
</children>
</Transform>
<TimeSensor
DEF='OrbitalTimeInterval'
cycleInterval='12.0'
loop='true'/>
<OrientationInterpolator
DEF='SpinThoseThings'
key='0.00 0.25 0.50 0.75 1.00'
keyValue='0 1 0 0, 0 1 0 1.5708, 0 1 0 3.14159, 0 1 0 4.7123889, 0 1 0 6.2831852'/>
<ROUTE
fromField='fraction_changed'
fromNode='OrbitalTimeInterval'
toField='set_fraction'
toNode='SpinThoseThings'/>
<ROUTE
fromField='value_changed'
fromNode='SpinThoseThings'
toField='rotation'
toNode='EarthCoordinateSystem'/>
</Scene>
</X3D>
<-- Tag color codes: <field> <NodeName attribute='value'/> </field> -->
|
#VRML V2.0 utf8
# X3D-to-VRML-97 XSL translation autogenerated by X3dToVrml97.xsl
# http://www.web3D.org/TaskGroups/x3d/translation/X3dToVrml97.xsl
# [X3D]
# [Header]
# [meta] filename: Orbiter.xml
# [meta] author: Don Brutzman
# [meta] revised: 9 January 2000
# [meta] description: A representative VRML/X3D scene graph fragment to demonstrate schema suitability for X3D
# [meta] url: http://www.web3D.org/TaskGroups/x3d/translation/examples/Orbiter.xml
# [meta] generator: X3D-Edit, http://www.web3D.org/TaskGroups/x3d/translation/README.X3D-Edit.html
# [Scene]
WorldInfo {
info [ "how well do schemas handle this simple world without data typing for arrays?" ]
title "Orbiter.xml"
}
Viewpoint {
description "Hello, world"
orientation 0 1 0 3.14159
position 0 0 -8
}
NavigationInfo {
type [ "EXAMINE" "ANY" ]
}
DEF EarthCoordinateSystem Transform {
children [
DEF MiniWorld Group {
children [
Shape {
appearance Appearance {
texture ImageTexture {
url [ "earth-topo.png"
"earth-topo.gif"
"http://www.web3d.org/TaskGroups/x3d/translation/earth-topo.png"
"http://www.web3d.org/TaskGroups/x3d/translation/earth-topo.gif" ]
}
}
geometry Sphere {
}
}
]
}
DEF SimpleGeoStationarySatellite Transform {
rotation 1 0 0 .3
scale 0.1 0.3 0.1
translation 0 0 5
children [
Shape {
appearance Appearance {
material Material {
diffuseColor 0.9 0.1 0.1
}
}
geometry Box {
}
}
]
}
]
}
DEF OrbitalTimeInterval TimeSensor {
cycleInterval 12.0
loop TRUE
}
DEF SpinThoseThings OrientationInterpolator {
key [ 0.00 0.25 0.50 0.75 1.00 ]
keyValue [ 0 1 0 0, 0 1 0 1.5708, 0 1 0 3.14159, 0 1 0 4.7123889, 0 1 0 6.2831852 ]
}
ROUTE OrbitalTimeInterval.fraction_changed TO SpinThoseThings.set_fraction
ROUTE SpinThoseThings.value_changed TO EarthCoordinateSystem.rotation
|
ProtoInstanceExample exercises IS functionality for fields of
simple types as well as node types.
ProtoInstanceExample.xml,
ProtoInstanceExample.html |
ProtoInstanceExample.wrl |
<X3D>
<head>
<meta
name='filename'
content='ProtoInstanceExample.xml'/>
<meta
name='author'
content='Don Brutzman'/>
<meta
name='revised'
content='22 January 2000'/>
<meta
name='description'
content='Simple PROTO example, includes Node as a field for PROTO'/>
<meta
name='url'
content='http://www.web3D.org/TaskGroups/x3d/translation/examples/ProtoInstanceExample.xml'/>
<meta
name='generator'
content='X3D-Edit, http://www.web3D.org/TaskGroups/x3d/translation/README.X3D-Edit.html'/>
</head>
<Scene>
<ProtoDeclare
name='NewShape'>
<field
IS='ContainedCylinder.height'
name='newHeight'
type='Float'
value='1'
vrml97Hint='field'/>
<field
IS='SomethingElseTest.radius ContainedCylinder.radius'
name='newRadius'
type='Float'
value='2'
vrml97Hint='field'/>
<field
IS='ContainedShape.appearance'
name='InitialAppearance'
type='Node'
vrml97Hint='field'>
<Appearance>
<material><Material
diffuseColor='1 0 0'/>
</material>
</Appearance>
</field>
<Shape
DEF='ContainedShape'>
<geometry><Cylinder
DEF='ContainedCylinder'/>
</geometry>
</Shape>
</ProtoDeclare>
<NavigationInfo
type='"EXAMINE" "ANY"'/>
<Billboard>
<children><ProtoInstance
name='NewShape'>
<fieldValue
fieldName='newHeight'
value='3'/>
<fieldValue
fieldName='newRadius'
value='4'/>
<fieldValue
fieldName='InitialAppearance'>
<Appearance>
<material><Material
DEF='CylinderMaterial'
diffuseColor='0 1 0'/>
</material>
</Appearance>
</fieldValue>
</ProtoInstance>
</children>
</Billboard>
</Scene>
</X3D>
<-- Tag color codes: <field> <NodeName attribute='value'/> </field> -->
|
#VRML V2.0 utf8
# X3D-to-VRML-97 XSL translation autogenerated by X3dToVrml97.xsl
# http://www.web3D.org/TaskGroups/x3d/translation/X3dToVrml97.xsl
# [X3D]
# [Header]
# [meta] filename: ProtoInstanceExample.xml
# [meta] author: Don Brutzman
# [meta] revised: 22 January 2000
# [meta] description: Simple PROTO example, includes Node as a field for PROTO
# [meta] url: http://www.web3D.org/TaskGroups/x3d/translation/examples/ProtoInstanceExample.xml
# [meta] generator: X3D-Edit, http://www.web3D.org/TaskGroups/x3d/translation/README.X3D-Edit.html
# [Scene]
PROTO NewShape [
field SFFloat newHeight 1
field SFFloat newRadius 2
field SFNode InitialAppearance Appearance {
material Material {
diffuseColor 1 0 0
}
}
] {
DEF ContainedShape Shape {
appearance IS InitialAppearance
geometry DEF ContainedCylinder Cylinder {
height IS newHeight
radius IS newRadius
}
}
}
NavigationInfo {
type [ "EXAMINE" "ANY" ]
}
Billboard {
children [
NewShape {
newHeight 3
newRadius 4
InitialAppearance Appearance {
material DEF CylinderMaterial Material {
diffuseColor 0 1 0
}
}
}
]
}
|
ProtoTagDtdDeclarationExamples
provides PROTO tag-definition examples to demonstrate DTD modularization and extensibility in X3D scenes.
(Note that DTD-fragment prolog sections are not always presented by XML viewers,
you may need to view the XML source.)
ProtoTagDtdDeclarationExamples.xml,
ProtoTagDtdDeclarationExamples.html |
ProtoTagDtdDeclarationExamples.wrl |
<?xml version="1.0" encoding="utf-8" ?>
<!-- Filename: ProtoTagDtdDeclarationExamples.xml
Revised: 17 April 2000
Author: Don Brutzman
Description: a complete set of PROTO examples demonstrating how to
extend the X3D DTD to accept and validate new nodes, in six steps.
X3D authors are encouraged to use this file as a template for defining
their own tags corresponding to PROTOs. Precise accuracy is essential
or you'll clobber the entire scene by failing XML validation checks.
XML Document Type Definitions (DTDs) are gnarly, be careful out there! :)
Please note there is a very simple alternative to using customized tags:
ignore all of these steps and just use ProtoInstance tags. The benefit
of defining new nodes is gaining strong validation of tags and fields at
authoring time. You can still get similar error checking by just using
ProtoInstance, but it must be performed by a browser at run time.
If your browser hides Steps 2-4, use View Source to find them again. -->
<!-- ********************************************************************* -->
<!-- ** Step 1: Copy the following DOCTYPE statement in your X3D scene. ** -->
<!-- ** Ensure you include the square backet [ on line 32! ** -->
<!-- ** Modify INCLUDE/IGNORE to match profiles of interest. ** -->
<!-- ********************************************************************* -->
<!DOCTYPE X3D PUBLIC
"http://www.web3D.org/TaskGroups/x3d/translation/x3d-compromise.dtd"
"file://localhost/C:/www.web3D.org/TaskGroups/x3d/translation/x3d-compromise.dtd"
[
<!ENTITY % Vrml97Profile "INCLUDE">
<!ENTITY % CoreProfile "IGNORE">
<!ENTITY % X3dExtensions "IGNORE">
<!ENTITY % GeoVrmlProfile "IGNORE">
<!-- ********************************************************************* -->
<!-- ** Step 2: Copy extension declarations for your nodes of interest. ** -->
<!-- ** Edit the |-separated PROTO names to match your content. ** -->
<!-- ********************************************************************* -->
<!ENTITY % AppearanceNodeExtensions "NewAppearanceExample|">
<!ENTITY % AudioClipNodeExtensions "NewAudioClipExample|">
<!ENTITY % BindableNodeExtensions "NewBackgroundExample|NewFogExample|NewNavigationInfoExample|NewViewpointExample|">
<!ENTITY % ColorNodeExtensions "NewColorExample|">
<!ENTITY % CoordinateNodeExtensions "NewCoordinateExample|">
<!ENTITY % FontStyleNodeExtensions "NewFontStyleExample|">
<!ENTITY % GeometryNodeExtensions "NewBoxExample|NewConeExample|NewCylinderExample|NewElevationGridExample|NewExtrusionExample|NewIndexedFaceSetExample|NewIndexedLineSetExample|NewPointSetExample|NewSphereExample|NewTextExample|">
<!ENTITY % GroupingNodeExtensions "NewAnchorExample|NewBillboardExample|NewCollisionExample|NewGroupExample|NewInlineExample|NewLODExample|NewSwitchExample|NewTransformExample|">
<!ENTITY % InterpolatorNodeExtensions "NewColorInterpolatorExample|NewCoordinateInterpolatorExample|NewNormalInterpolatorExample|NewOrientationInterpolatorExample|NewPositionInterpolatorExample|NewScalarInterpolatorExample|">
<!ENTITY % LightNodeExtensions "NewDirectionalLightExample|NewPointLightExample|NewSpotLightExample|">
<!ENTITY % MaterialNodeExtensions "NewMaterialExample|">
<!ENTITY % NormalNodeExtensions "NewNormalExample|">
<!ENTITY % ScriptNodeExtensions "NewScriptExample|">
<!ENTITY % SensorNodeExtensions "NewCylinderSensorExample|NewPlaneSensorExample|NewProximitySensorExample|NewSphereSensorExample|NewTimeSensorExample|NewTouchSensorExample|NewVisibilitySensorExample|">
<!ENTITY % ShapeNodeExtensions "NewShapeExample|">
<!ENTITY % SoundNodeExtensions "NewSoundExample|">
<!-- MovieTexture must appear twice: -->
<!ENTITY % MovieTextureNodeExtensions "NewMovieTextureExample|">
<!ENTITY % TextureNodeExtensions "NewImageTextureExample|NewMovieTextureExample|NewPixelTextureExample|">
<!ENTITY % TextureCoordinateNodeExtensions "NewTextureCoordinateExample|">
<!ENTITY % TextureTransformNodeExtensions "NewTextureTransformExample|">
<!ENTITY % WorldInfoNodeExtensions "NewWorldInfoExample|">
<!-- ********************************************************************* -->
<!-- *** Step 3: Copy entity declarations for your nodes of interest. *** -->
<!-- *** If any of your protos are eligible content, add them. *** -->
<!-- *** Substitute ANY for child nodes to avoid validation. *** -->
<!-- ********************************************************************* -->
<!ELEMENT NewAnchorExample ( (fieldValue)*, (children)? ) >
<!ATTLIST NewAnchorExample
description CDATA #IMPLIED
parameter CDATA #IMPLIED
url CDATA #IMPLIED
bboxCenter CDATA "0 0 0"
bboxSize CDATA "-1 -1 -1"
nodeTypeHint CDATA #FIXED "Anchor"
DEF ID #IMPLIED
USE IDREF #IMPLIED>
<!ELEMENT NewAppearanceExample ( (fieldValue)*,
( (material, ((texture, textureTransform?) | (textureTransform, texture?))? ) |
(texture, ((material, textureTransform?) | (textureTransform, material?))? ) |
(textureTransform, ((texture, material?) | (material, texture?))? ) )?
) >
<!ATTLIST NewAppearanceExample
nodeTypeHint CDATA #FIXED "Appearance"
DEF ID #IMPLIED
USE IDREF #IMPLIED>
<!--- NewAudioClipExample through NewTransformExample omitted, View Source to see them... -->
<!ELEMENT NewViewpointExample (fieldValue)* >
<!ATTLIST NewViewpointExample
fieldOfView CDATA "0.785398"
jump (true|false) "true"
orientation CDATA "0 0 1 0"
position CDATA "0 0 10"
description CDATA #IMPLIED
bind (true|false) "false"
bindTime CDATA "-1"
isBound (true|false) "false"
examine CDATA "0 0 0"
nodeTypeHint CDATA #FIXED "Viewpoint"
DEF ID #IMPLIED
USE IDREF #IMPLIED>
<!-- examine (point of rotation) is proposed addition, maybe belongs in NavigationInfo instead... -->
<!ELEMENT NewVisibilitySensorExample (fieldValue)* >
<!ATTLIST NewVisibilitySensorExample
center CDATA "0 0 0"
enabled (true|false) "true"
size CDATA "0 0 0"
enterTime CDATA "0.0"
exitTime CDATA "0.0"
isActive (true|false) "false"
nodeTypeHint CDATA #FIXED "VisibilitySensor"
DEF ID #IMPLIED
USE IDREF #IMPLIED>
<!ELEMENT NewWorldInfoExample (fieldValue)* >
<!ATTLIST NewWorldInfoExample
info CDATA #IMPLIED
title CDATA #IMPLIED
nodeTypeHint CDATA #FIXED "WorldInfo"
DEF ID #IMPLIED
USE IDREF #IMPLIED>
<!-- ********************************************************************* -->
<!-- *** Step 4: Copy ] > terminator to close the internal subset. *** -->
<!-- *** Also copy X3D, Header and Scene tag pairs if needed. *** -->
<!-- ********************************************************************* -->
]>
<X3D>
<head>
<meta
name='filename'
content='ProtoTagDtdDeclarationExamples.xml'/>
<meta
name='revised'
content='17 April 2000'/>
<meta
name='author'
content='Don Brutzman'/>
<meta
name='e-mail'
content='mailto:brutzman@nps.navy.mil'/>
<meta
name='description'
content='Provide PROTO tag-definition examples to demonstrate DTD modularization and extensibility in X3D scenes.
Prepared using IBM's xmlviewer application, which shows fully substituted DTD results.
A single-node example is also available in the SpinGroupExternalDeclaration.xml scene.'/>
<meta
name='url'
content='http://www.web3d.org/TaskGroups/x3d/translation/examples/ProtoTagExamples.xml'/>
<meta
name='generator'
content='X3D-Edit, http://www.web3d.org/TaskGroups/x3d/translation/README.X3D-Edit.html'/>
</head>
<Scene>
<-- ********************************************************************* -->
<-- *** Step 5: Copy/edit ProtoDeclare, (optionally ProtoInstance) *** -->
<-- *** and the tagset version for your nodes of interest. *** -->
<-- *** When instantiating field Node/Nodes or field values, *** -->
<-- *** use fieldValue tags to override the initial values. *** -->
<-- *** The following example content instantiates prototype *** -->
<-- *** NewTransformExample using tags and ProtoInstance. *** -->
<-- ********************************************************************* -->
<-- Declaring the NewTransformExample PROTO: -->
<ProtoDeclare
name='NewTransformExample'>
<field
name='translation'
type='Vector3'
value='0 0 0'
IS='InitialTransform.translation'
vrml97Hint='exposedField'/>
<field
name='rotation'
type='Rotation'
value='0 0 1 0'
IS='InitialTransform.rotation'
vrml97Hint='exposedField'/>
<field
name='center'
type='Vector3'
value='0 0 0'
vrml97Hint='exposedField'/>
<field
name='scale'
type='Vector3'
value='1 1 1'
vrml97Hint='exposedField'/>
<field
name='scaleOrientation'
type='Rotation'
value='0 0 1 0'
vrml97Hint='exposedField'/>
<field
name='bboxCenter'
type='Vector3'
value='0 0 0'
vrml97Hint='field'/>
<field
name='bboxSize'
type='Vector3'
value='-1 -1 -1'
vrml97Hint='field'/>
<field
name='children'
type='Nodes'
vrml97Hint='exposedField'/>
<-- Transform is first node, which determines node type, and encloses children for instances. -->
<Transform
DEF='InitialTransform'/>
</ProtoDeclare>
<-- Instantiating the NewTransformExample PROTO using a ProtoInstance tag: -->
<ProtoInstance
name='NewTransformExample'>
<fieldValue
value='-5 0 0'
fieldName='translation'/>
<fieldValue
fieldName='children'>
<Shape>
<appearance><Appearance
DEF='AQUAMARINE'>
<material><Material
diffuseColor='0.1 0.8 0.8'/>
</material>
</Appearance>
</appearance>
<geometry><Text
string='SpinGroup'/>
</geometry>
</Shape>
</fieldValue>
</ProtoInstance>
<-- Instantiating the NewTransformExample PROTO using a customized tag: -->
<NewTransformExample
translation='5 0 0'
scale='1 1 1'
scaleOrientation='0 0 1 0'
center='0 0 0'
nodeTypeHint='Transform'
rotation='0 0 1 0'>
<fieldValue
fieldName='children'>
<Shape>
<appearance><Appearance
USE='AQUAMARINE'/>
</appearance>
<geometry><Text
string='Example'/>
</geometry>
</Shape>
</fieldValue>
</NewTransformExample>
</Scene>
</X3D>
<-- Tag color codes: <field> <NodeName attribute='value'/> </field> -->
|
#VRML V2.0 utf8
# X3D-to-VRML-97 XSL translation autogenerated by X3dToVrml97.xsl
# http://www.web3D.org/TaskGroups/x3d/translation/X3dToVrml97.xsl
# [X3D]
# [Header]
# [meta] filename: ProtoTagDtdDeclarationExamples.xml
# [meta] revised: 17 April 2000
# [meta] author: Don Brutzman
# [meta] e-mail: mailto:brutzman@nps.navy.mil
# [meta] description: Provide PROTO tag-definition examples to demonstrate DTD modularization and extensibility in X3D scenes. Prepared using IBM's xmlviewer application, which shows fully substituted DTD results. A single-node example is also available in the SpinGroupExternalDeclaration.xml scene.
# [meta] url: http://www.web3d.org/TaskGroups/x3d/translation/examples/ProtoTagExamples.xml
# [meta] generator: X3D-Edit, http://www.web3d.org/TaskGroups/x3d/translation/README.X3D-Edit.html
# [Scene]
# *********************************************************************
# *** Step 5: Copy/edit ProtoDeclare, (optionally ProtoInstance) ***
# *** and the tagset version for your nodes of interest. ***
# *** When instantiating field Node/Nodes or field values, ***
# *** use fieldValue tags to override the initial values. ***
# *** The following example content instantiates prototype ***
# *** NewTransformExample using tags and ProtoInstance. ***
# *********************************************************************
# Declaring the NewTransformExample PROTO:
PROTO NewTransformExample [
exposedField SFVec3f translation 0 0 0
exposedField SFRotation rotation 0 0 1 0
exposedField SFVec3f center 0 0 0
exposedField SFVec3f scale 1 1 1
exposedField SFRotation scaleOrientation 0 0 1 0
field SFVec3f bboxCenter 0 0 0
field SFVec3f bboxSize -1 -1 -1
exposedField MFNode children [ ]
# Transform is first node, which determines node type, and encloses children for instances.
] {
# Transform is first node, which determines node type, and encloses children for instances.
DEF InitialTransform Transform {
translation IS translation
rotation IS rotation
}
}
# Instantiating the NewTransformExample PROTO using a ProtoInstance tag:
NewTransformExample {
translation -5 0 0
children Shape {
appearance DEF AQUAMARINE Appearance {
material Material {
diffuseColor 0.1 0.8 0.8
}
}
geometry Text {
string [ "SpinGroup" ]
}
}
}
# Instantiating the NewTransformExample PROTO using a customized tag:
NewTransformExample {
translation 5 0 0
scale 1 1 1
scaleOrientation 0 0 1 0
center 0 0 0
rotation 0 0 1 0
children Shape {
appearance USE AQUAMARINE
geometry Text {
string [ "Example" ]
}
}
children [
]
}
|
ProxyShapeExample, when unwrapped, shows that disambiguation of multiple child nodes
is completely possible even when node children of mixed type and mixed order are present. Note the order
Shape-Proxy-Shape in the unwrapped X3d version is correctly translated to Proxy-children[Shape-Shape] in the VRML version.
| ProxyShapeExample.xml,
ProxyShapeExample.html,
ProxyShapeExampleUnwrapped.xml |
ProxyShapeExample.wrl |
<X3D>
<head>
<meta
name='filename'
content='ProxyShapeExample.xml'/>
<meta
name='author'
content='Don Brutzman'/>
<meta
name='revised'
content='14 January 2000'/>
<meta
name='description'
content='Collision node child test case: Shape Proxy Shape'/>
<meta
name='url'
content='http://www.web3D.org/TaskGroups/x3d/translation/examples/ProxyShapeExample.xml'/>
<meta
name='generator'
content='X3D-Edit, http://www.web3D.org/TaskGroups/x3d/translation/README.X3D-Edit.html'/>
</head>
<Scene>
<Collision
DEF='MyCollision'
collideTime='0.0'>
<proxy>
<Shape>
<geometry><Box/>
</geometry>
</Shape>
</proxy>
<children><Shape>
<geometry><Sphere/>
</geometry>
</Shape>
<Shape>
<geometry><Cone/>
</geometry>
</Shape>
</children>
</Collision>
<Script
DEF='MyNodeProducer'>
<field
name='outputNode'
type='Nodes'
vrml97Hint='eventOut'/>
</Script>
<ROUTE
fromField='outputNode'
fromNode='MyNodeProducer'
toField='children'
toNode='MyCollision'/>
</Scene>
</X3D>
<-- Tag color codes: <field> <NodeName attribute='value'/> </field> -->
|
#VRML V2.0 utf8
# X3D-to-VRML-97 XSL translation autogenerated by X3dToVrml97.xsl
# http://www.web3D.org/TaskGroups/x3d/translation/X3dToVrml97.xsl
# [X3D]
# [Header]
# [meta] filename: ProxyShapeExample.xml
# [meta] author: Don Brutzman
# [meta] revised: 14 January 2000
# [meta] description: Collision node child test case: Shape Proxy Shape
# [meta] url: http://www.web3D.org/TaskGroups/x3d/translation/examples/ProxyShapeExample.xml
# [meta] generator: X3D-Edit, http://www.web3D.org/TaskGroups/x3d/translation/README.X3D-Edit.html
# [Scene]
DEF MyCollision Collision {
collideTime 0.0
children [
Shape {
geometry Sphere {
}
}
Shape {
geometry Cone {
}
}
]
proxy Shape {
geometry Box {
}
}
}
DEF MyNodeProducer Script {
eventOut MFNode outputNode
url ""
}
ROUTE MyNodeProducer.outputNode TO MyCollision.children
|
QuadTreesExample also shows that disambiguation of multiple child nodes
is completely possible even when node children of mixed type and mixed order are present. Two independent solution
approaches (refer by DEF and contain Node) are presented in pairs, using PROTOs or native XML tags declared in the
prolog section of the X3D file.
This is a good example to see two general ways of extending the VRML 97 scene graph:
using either ProtoDeclare declarations,
or native-XML tag declarations in the DTD-fragment prolog section of an X3D scene file.
Further explanation about the scene code appears in the original
QuadTreeExamplesExplanation.html;
also be sure to check the
QuadTreeExamples.wrl
results.
The techniques in this example also demonstrate conclusively that field wrapper tags are not
necessary for unambiguous scene graph representations. See
WrapperTagsExample
for further detail on that topic.
(Note that DTD-fragment prolog sections are not always presented by XML viewers,
you may need to view the XML source.)
| QuadTreeExamples.xml,
QuadTreeExamples.html |
QuadTreeExamples.wrl |
<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE X3D PUBLIC
"http://www.web3D.org/TaskGroups/x3d/translation/x3d-compromise.dtd"
"file://localhost/C:/www.web3D.org/TaskGroups/x3d/translation/x3d-compromise.dtd"
[
<!ENTITY % Vrml97Profile "INCLUDE">
<!ENTITY % CoreProfile "IGNORE">
<!ENTITY % X3dExtensions "IGNORE">
<!ENTITY % GeoVrmlProfile "IGNORE">
<!-- this pattern was copied, pasted and adapted from ProtoTagDtdDeclarationExamples.xml
which provides templates for native tag definition for any node type. -->
<!ENTITY % GroupingNodeExtensions "QuadTree-USEchildren|QuadTree-TagChildren|">
<!-- example solution definition #2 -->
<!ELEMENT QuadTree-USEchildren (fieldValue*, children?) >
<!ATTLIST QuadTree-USEchildren
upperLeftName IDREF #IMPLIED
upperRightName IDREF #IMPLIED
lowerLeftName IDREF #IMPLIED
lowerRightName IDREF #IMPLIED
nodeTypeHint CDATA #FIXED "Group"
DEF ID #IMPLIED
USE IDREF #IMPLIED>
<!-- example solution definition #4 -->
<!ELEMENT QuadTree-TagChildren (fieldValue*, children?) >
<!ATTLIST QuadTree-TagChildren
upperLeftNode IDREF #IMPLIED
upperRightNode IDREF #IMPLIED
lowerLeftNode IDREF #IMPLIED
lowerRightNode IDREF #IMPLIED
nodeTypeHint CDATA #FIXED "Group"
DEF ID #IMPLIED
USE IDREF #IMPLIED>
]>
<X3D>
<head>
<meta
name='filename'
content='QuadTreeExamples.xml'/>
<meta
name='author'
content='Don Brutzman'/>
<meta
name='revised'
content='20 April 2000'/>
<meta
name='description'
content='Show four ways of solving the QuadTree problem using native XML tags, PROTOs, IDREF/USE
and MFNode children compatibly using x3d-draft.dtd with VRML 97. Other solutions may also be possible.'/>
<meta
name='translation'
content='../X3dToVrml97.xsl'/>
<meta
name='url'
content='http://www.web3D.org/TaskGroups/x3d/translation/examples/QuadTreeExamples.xml'/>
<meta
name='generator'
content='X3D-Edit, http://www.web3D.org/TaskGroups/x3d/translation/README.X3D-Edit.html'/>
</head>
<Scene>
<-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
<-- Example solution approach #1 -->
<-- Note that PROTO declarations are also provided for compatible backwards translation to
VRML 97 encoding. They are not necessary for independent X3D use of the QuadTree examples. -->
<ProtoDeclare
name='QuadTree-USEchildren'>
<field
type='Nodes'
name='upperLeftDEFName'
IS='GroupA.children'/>
<field
type='Nodes'
name='upperRightDEFName'
IS='GroupB.children'/>
<field
type='Nodes'
name='lowerLeftDEFName'
IS='GroupC.children'/>
<field
type='Nodes'
name='lowerRightDEFName'
IS='GroupD.children'/>
<-- children field must be declared for any PROTOs or native-tag nodes with children -->
<field
type='Nodes'
name='children'/>
<-- VRML 97 specification paragraph 4.8.3, PROTO definition semantics:
"A prototype definition consists of one or more nodes." PROTO body follows. -->
<Group>
<children><Group
DEF='GroupA'/>
<Group
DEF='GroupB'/>
<Group
DEF='GroupC'/>
<Group
DEF='GroupD'/>
</children>
</Group>
</ProtoDeclare>
<-- Example solution approach #3 -->
<ProtoDeclare
name='QuadTree-TagChildren'>
<field
type='Nodes'
name='upperLeftNode'
IS='GroupE.children'/>
<field
type='Nodes'
name='upperRightNode'
IS='GroupF.children'/>
<field
type='Nodes'
name='lowerLeftNode'
IS='GroupG.children'/>
<field
type='Nodes'
name='lowerRightNode'
IS='GroupH.children'/>
<field
type='Nodes'
name='children'/>
<-- PROTO body follows. -->
<Group>
<children><Group
DEF='GroupE'/>
<Group
DEF='GroupF'/>
<Group
DEF='GroupG'/>
<Group
DEF='GroupH'/>
</children>
</Group>
</ProtoDeclare>
<-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
<Group>
<children><Viewpoint
description='View QuadTree examples'
position='0 0 30'/>
<NavigationInfo
type='"EXAMINE" "ANY"'/>
<-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
<-- Examples 1 and 2 use DEF names for subtree references, via PROTOs or XML tags. -->
<Transform
DEF='Example_1'
translation='0 6 0'>
<children><--
ProtoInstance nodeType Group
-->
<ProtoInstance
name='QuadTree-USEchildren'>
<fieldValue
fieldName='upperLeftDEFName'
value='UPPER_LEFT'/>
<fieldValue
fieldName='upperRightDEFName'
value='UPPER_RIGHT'/>
<fieldValue
fieldName='lowerLeftDEFName'
value='LOWER_LEFT'/>
<fieldValue
fieldName='lowerRightDEFName'
value='LOWER_RIGHT'/>
<children>
<Group>
<children><Transform
DEF='UPPER_LEFT'
translation='4 0 4'>
<children><Shape>
<appearance><Appearance
DEF='RED'>
<material><Material
diffuseColor='1 0 0'/>
</material>
</Appearance>
</appearance>
<geometry><Box/>
</geometry>
</Shape>
</children>
</Transform>
<Transform
DEF='UPPER_RIGHT'
translation='3 0 -3'>
<children><Shape>
<appearance><Appearance
DEF='GREEN'>
<material><Material
diffuseColor='0 1 0'/>
</material>
</Appearance>
</appearance>
<geometry><Sphere/>
</geometry>
</Shape>
</children>
</Transform>
<Transform
DEF='LOWER_LEFT'
translation='-3 0 -3'>
<children><Shape>
<appearance><Appearance
DEF='BLUE'>
<material><Material
diffuseColor='.2 .2 1'/>
</material>
</Appearance>
</appearance>
<geometry><Cylinder/>
</geometry>
</Shape>
</children>
</Transform>
<Transform
DEF='LOWER_RIGHT'
translation='-6 0 4'>
<children><Shape>
<appearance><Appearance
DEF='WHITE'>
<material><Material
diffuseColor='1 1 1'/>
</material>
</Appearance>
</appearance>
<geometry><Text
string='
"QuadTree-USEchildren"
"ProtoInstance" '/>
</geometry>
</Shape>
</children>
</Transform>
</children>
</Group>
</children>
</ProtoInstance>
</children>
</Transform>
<-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
<Transform
DEF='Example_2'
translation='0 2 0'>
<children><QuadTree-USEchildren
nodeTypeHint='Group'>
<fieldValue
fieldName='upperLeftDEFName'
value='UPPER_LEFT'/>
<fieldValue
fieldName='upperRightDEFName'
value='UPPER_RIGHT'/>
<fieldValue
fieldName='lowerLeftDEFName'
value='LOWER_LEFT'/>
<fieldValue
fieldName='lowerRightDEFName'
value='LOWER_RIGHT_EXAMPLE_2'/>
<children>
<-- children which follow are locally convenient and referenced via IDREF/USE -->
<Transform
DEF='LOWER_RIGHT_EXAMPLE_2'
translation='-6 0 4'>
<children><Shape>
<geometry><Text
string=' "QuadTree-USEchildren" "Native tags" '/>
</geometry>
<appearance><Appearance
USE='WHITE'/>
</appearance>
</Shape>
</children>
</Transform>
</children>
</QuadTree-USEchildren>
</children>
</Transform>
<-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
<-- Examples 3 and 4 use actual nodes for subtree references, via PROTOs or XML tags. -->
<Transform
DEF='Example_3'
translation='0 -2 0'>
<children><--
ProtoInstance nodeType Group
-->
<ProtoInstance
name='QuadTree-TagChildren'>
<fieldValue
fieldName='upperLeftNode'>
<Transform
USE='UPPER_LEFT'/>
</fieldValue>
<fieldValue
fieldName='upperRightNode'>
<Transform
USE='UPPER_RIGHT'/>
</fieldValue>
<fieldValue
fieldName='lowerLeftNode'>
<Transform
USE='LOWER_LEFT'/>
</fieldValue>
<fieldValue
fieldName='lowerRightNode'>
<Transform
translation='-6 0 4'>
<children><Shape>
<geometry><Text
string=' "QuadTree-TagChildren" "ProtoInstance" '/>
</geometry>
<appearance><Appearance
USE='WHITE'/>
</appearance>
</Shape>
</children>
</Transform>
</fieldValue>
</ProtoInstance>
</children>
</Transform>
<-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
<Transform
DEF='Example_4'
translation='0 -6 0'>
<children><QuadTree-TagChildren
nodeTypeHint='Group'>
<fieldValue
fieldName='upperLeftNode'>
<Transform
USE='UPPER_LEFT'/>
</fieldValue>
<fieldValue
fieldName='upperRightNode'>
<Transform
USE='UPPER_RIGHT'/>
</fieldValue>
<fieldValue
fieldName='lowerLeftNode'>
<Transform
USE='LOWER_LEFT'/>
</fieldValue>
<fieldValue
fieldName='lowerRightNode'>
<Transform
translation='-6 0 4'>
<children><Shape>
<geometry><Text
string=' "QuadTree-TagChildren" "Native tags" '/>
</geometry>
<appearance><Appearance
USE='WHITE'/>
</appearance>
</Shape>
</children>
</Transform>
<WorldInfo
info='this WorldInfo is here to demonstrate that the example is type MFNode/Nodes'/>
</fieldValue>
</QuadTree-TagChildren>
</children>
</Transform>
</children>
</Group>
<-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
</Scene>
</X3D>
<-- Tag color codes: <field> <NodeName attribute='value'/> </field> -->
|
#VRML V2.0 utf8
# X3D-to-VRML-97 XSL translation autogenerated by X3dToVrml97.xsl
# http://www.web3D.org/TaskGroups/x3d/translation/X3dToVrml97.xsl
# [X3D]
# [Header]
# [meta] filename: QuadTreeExamples.xml
# [meta] author: Don Brutzman
# [meta] revised: 20 April 2000
# [meta] description: Show four ways of solving the QuadTree problem using native XML tags, PROTOs, IDREF/USE and MFNode children compatibly using x3d-draft.dtd with VRML 97. Other solutions may also be possible.
# [meta] translation: ../X3dToVrml97.xsl
# [meta] url: http://www.web3D.org/TaskGroups/x3d/translation/examples/QuadTreeExamples.xml
# [meta] generator: X3D-Edit, http://www.web3D.org/TaskGroups/x3d/translation/README.X3D-Edit.html
# [Scene]
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# Example solution approach #1
# Note that PROTO declarations are also provided for compatible backwards translation to VRML 97 encoding. They are not necessary for independent X3D use of the QuadTree examples.
PROTO QuadTree-USEchildren [
exposedField MFNode upperLeftDEFName [ ]
exposedField MFNode upperRightDEFName [ ]
exposedField MFNode lowerLeftDEFName [ ]
exposedField MFNode lowerRightDEFName [ ]
# children field must be declared for any PROTOs or native-tag nodes with children
exposedField MFNode children [ ]
# VRML 97 specification paragraph 4.8.3, PROTO definition semantics: "A prototype definition consists of one or more nodes." PROTO body follows.
] {
# children field must be declared for any PROTOs or native-tag nodes with children
# VRML 97 specification paragraph 4.8.3, PROTO definition semantics: "A prototype definition consists of one or more nodes." PROTO body follows.
Group {
children [
DEF GroupA Group {
children IS upperLeftDEFName
}
DEF GroupB Group {
children IS upperRightDEFName
}
DEF GroupC Group {
children IS lowerLeftDEFName
}
DEF GroupD Group {
children IS lowerRightDEFName
}
]
}
}
# Example solution approach #3
PROTO QuadTree-TagChildren [
exposedField MFNode upperLeftNode [ ]
exposedField MFNode upperRightNode [ ]
exposedField MFNode lowerLeftNode [ ]
exposedField MFNode lowerRightNode [ ]
exposedField MFNode children [ ]
# PROTO body follows.
] {
# PROTO body follows.
Group {
children [
DEF GroupE Group {
children IS upperLeftNode
}
DEF GroupF Group {
children IS upperRightNode
}
DEF GroupG Group {
children IS lowerLeftNode
}
DEF GroupH Group {
children IS lowerRightNode
}
]
}
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Group {
children [
Viewpoint {
description "View QuadTree examples"
position 0 0 30
}
NavigationInfo {
type [ "EXAMINE" "ANY" ]
}
DEF Example_1 Transform {
translation 0 6 0
children [
QuadTree-USEchildren {
children [
Group {
children [
DEF UPPER_LEFT Transform {
translation 4 0 4
children [
Shape {
appearance DEF RED Appearance {
material Material {
diffuseColor 1 0 0
}
}
geometry Box {
}
}
]
}
DEF UPPER_RIGHT Transform {
translation 3 0 -3
children [
Shape {
appearance DEF GREEN Appearance {
material Material {
diffuseColor 0 1 0
}
}
geometry Sphere {
}
}
]
}
DEF LOWER_LEFT Transform {
translation -3 0 -3
children [
Shape {
appearance DEF BLUE Appearance {
material Material {
diffuseColor .2 .2 1
}
}
geometry Cylinder {
}
}
]
}
DEF LOWER_RIGHT Transform {
translation -6 0 4
children [
Shape {
appearance DEF WHITE Appearance {
material Material {
diffuseColor 1 1 1
}
}
geometry Text {
string [ "QuadTree-USEchildren" "ProtoInstance" ]
}
}
]
}
]
}
]
upperLeftDEFName USE UPPER_LEFT
upperRightDEFName USE UPPER_RIGHT
lowerLeftDEFName USE LOWER_LEFT
lowerRightDEFName USE LOWER_RIGHT
}
]
}
DEF Example_2 Transform {
translation 0 2 0
children [
QuadTree-USEchildren {
children [
DEF LOWER_RIGHT_EXAMPLE_2 Transform {
translation -6 0 4
children [
Shape {
geometry Text {
string [ "QuadTree-USEchildren" "Native tags" ]
}
appearance USE WHITE
}
]
}
]
upperLeftDEFName USE UPPER_LEFT
upperRightDEFName USE UPPER_RIGHT
lowerLeftDEFName USE LOWER_LEFT
lowerRightDEFName USE LOWER_RIGHT_EXAMPLE_2
}
]
}
DEF Example_3 Transform {
translation 0 -2 0
children [
QuadTree-TagChildren {
upperLeftNode USE UPPER_LEFT
upperRightNode USE UPPER_RIGHT
lowerLeftNode USE LOWER_LEFT
lowerRightNode Transform {
translation -6 0 4
children [
Shape {
geometry Text {
string [ "QuadTree-TagChildren" "ProtoInstance" ]
}
appearance USE WHITE
}
]
}
}
]
}
DEF Example_4 Transform {
translation 0 -6 0
children [
QuadTree-TagChildren {
upperLeftNode USE UPPER_LEFT
upperRightNode USE UPPER_RIGHT
lowerLeftNode USE LOWER_LEFT
lowerRightNode [
Transform {
translation -6 0 4
children [
Shape {
geometry Text {
string [ "QuadTree-TagChildren" "Native tags" ]
}
appearance USE WHITE
}
]
}
WorldInfo {
info [ "this WorldInfo is here to demonstrate that the example is type MFNode/Nodes" ]
}
]
}
]
}
]
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
ScriptExample is a simple file that exercises Script and field tags.
| ScriptExample.xml,
ScriptExample.html |
ScriptExample.wrl |
<X3D>
<head>
<meta
name='filename'
content='ScriptExample.xml'/>
<meta
name='author'
content='Don Brutzman'/>
<meta
name='revised'
content='8 January 2000'/>
<meta
name='description'
content='Demonstrate Script functionality, syntax'/>
<meta
name='url'
content='http://www.web3D.org/TaskGroups/x3d/translation/examples/ScriptExample.xml'/>
<meta
name='generator'
content='X3D-Edit, http://www.web3D.org/TaskGroups/x3d/translation/README.X3D-Edit.html'/>
</head>
<Scene>
<Script
DEF='myScript'
url='"http://www.web3D.org/TaskGroups/x3d/translation" "a second url goes here"'>
<field
name='someSFBool'
type='Boolean'
vrml97Hint='eventIn'/>
<field
name='someMFInt32'
type='Integers'
vrml97Hint='eventOut'/>
<field
name='someMFFloats'
type='Floats'
value='0.0 1.0 2.0'
vrml97Hint='field'/>
<field
name='someStringField'
type='String'
value='hello'
vrml97Hint='exposedField'/>
<field
name='stringTest1'
type='Strings'
value='"apostrophe" "attributes"'
vrml97Hint='field'/>
<field
name='stringTest2'
type='Strings'
value='"numeric" "quotes"'
vrml97Hint='field'/>
<field
name='stringTest3'
type='Strings'
value='""" "quotes"'
vrml97Hint='field'/>
<field
name='someUnhintedUninitializedRotation'
type='Rotation'/>
<field
name='someUnhintedInitializedTime'
type='Time'
value='-1'/>
<field
name='someUnhintedUninitializedTime'
type='Time'/>
</Script>
</Scene>
</X3D>
<-- Tag color codes: <NodeName attribute='value'/> -->
|
#VRML V2.0 utf8
# X3D-to-VRML-97 XSL translation autogenerated by X3dToVrml97.xsl
# http://www.web3D.org/TaskGroups/x3d/translation/X3dToVrml97.xsl
# [X3D]
# [Header]
# [meta] filename: ScriptExample.xml
# [meta] author: Don Brutzman
# [meta] revised: 8 January 2000
# [meta] description: Demonstrate Script functionality, syntax
# [meta] url: http://www.web3D.org/TaskGroups/x3d/translation/examples/ScriptExample.xml
# [meta] generator: X3D-Edit, http://www.web3D.org/TaskGroups/x3d/translation/README.X3D-Edit.html
# [Scene]
DEF myScript Script {
url [ "http://www.web3D.org/TaskGroups/x3d/translation" "a second url goes here" ]
eventIn SFBool someSFBool
eventOut MFInt32 someMFInt32
field MFFloat someMFFloats [ 0.0 1.0 2.0 ]
# XSL-translation warning: 'exposedField' not allowed in VRML 97 Script, used 'field' instead
field SFString someStringField "hello"
field MFString stringTest1 [
"apostrophe" "attributes"
]
field MFString stringTest2 [
"numeric" "quotes"
]
field MFString stringTest3 [
""" "quotes"
]
field SFRotation someUnhintedUninitializedRotation 0 0 1 0
field SFTime someUnhintedInitializedTime -1
field SFTime someUnhintedUninitializedTime -1
}
|
ShapeChildRoutingExample shows that routing to Node children
works identically in X3D as in VRML 97, regardless of whether field wrappers are included.
| ShapeChildRoutingExample.xml,
ShapeChildRoutingExample.html,
ShapeChildRoutingExampleUnwrapped.xml |
ShapeChildRoutingExample.wrl,
ShapeChildRoutingExample.wrl |
<X3D>
<head>
<meta
name='filename'
content='ShapeChildRoutingExample.xml'/>
<meta
name='Author'
content='Don Brutzman'/>
<meta
name='Date'
content='9 January 2000'/>
<meta
name='url'
content='http://www.web3D.org/TaskGroups/x3d/translation/examples/ShapeChildRoutingExample.xml'/>
<meta
name='GENERATOR'
content='X3D-Edit, http://www.web3d.org/TaskGroups/x3d/translation/README.X3D-Edit.html'/>
</head>
<Scene>
<Transform>
<children><Shape
DEF='A_SHAPE'>
<geometry><Box/>
</geometry>
</Shape>
<Script
DEF='A_SCRIPT'>
<field
name='geometryResult'
type='Node'
vrml97Hint='eventOut'/>
<-- Scripting code is wrapped in a CDATA section to preserve all characters without normalization -->
<![CDATA[
javascript:
function initialize ()
{
sphereResult = Browser.createVrmlFromString ('Sphere { }');
geometryResult = sphereResult [0]; // type casting MF -> SFNode
}
]]>
</Script>
</children>
</Transform>
<ROUTE
fromField='geometryResult'
fromNode='A_SCRIPT'
toField='geometry'
toNode='A_SHAPE'/>
</Scene>
</X3D>
<-- Tag color codes: <field> <NodeName attribute='value'/> </field> -->
|
#VRML V2.0 utf8
# X3D-to-VRML-97 XSL translation autogenerated by X3dToVrml97.xsl
# http://www.web3D.org/TaskGroups/x3d/translation/X3dToVrml97.xsl
# [X3D]
# [Header]
# [meta] filename: ShapeChildRoutingExample.xml
# [meta] Author: Don Brutzman
# [meta] Date: 9 January 2000
# [meta] url: http://www.web3D.org/TaskGroups/x3d/translation/examples/ShapeChildRoutingExample.xml
# [meta] GENERATOR: X3D-Edit, http://www.web3d.org/TaskGroups/x3d/translation/README.X3D-Edit.html
# [Scene]
Transform {
children [
DEF A_SHAPE Shape {
geometry Box {
}
}
DEF A_SCRIPT Script {
eventOut SFNode geometryResult
# Scripting code is wrapped in a CDATA section to preserve all characters without normalization
url "javascript:
function initialize ()
{
sphereResult = Browser.createVrmlFromString ('Sphere { }');
geometryResult = sphereResult [ 0 ]; // type casting MF -> SFNode
}
"
}
]
}
ROUTE A_SCRIPT.geometryResult TO A_SHAPE.geometry
|
SpinGroupInternalSubsetDeclaration
shows how to compatibly define a SpinGroup prototype, either using author-defined XML tag definitions
or using standard VRML PROTO mechanisms. You must look at the complete unfiltered XML source
to see the precise DOCTYPE and internal entity declarations needed.
SpinGroupInternalSubsetDeclaration.xml,
SpinGroupInternalSubsetDeclaration.html |
SpinGroupInternalSubsetDeclaration.wrl |
<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE X3D PUBLIC
"http://www.web3D.org/TaskGroups/x3d/translation/x3d-compromise.dtd"
"file://localhost/C:/www.web3D.org/TaskGroups/x3d/translation/x3d-compromise.dtd"
[
<!ENTITY % Vrml97Profile "INCLUDE">
<!ENTITY % CoreProfile "IGNORE">
<!ENTITY % X3dExtensions "IGNORE">
<!ENTITY % GeoVrmlProfile "IGNORE">
<!-- SpinGroupInternalSubsetDeclaration.xml: an example scene demonstrating
how to extend the X3D DTD to accept and validate a new node.
The extension-node type declaration goes here in the internal subset.
It will override the null-string declaration in the external X3D DTD.
-->
<!ENTITY % GroupingNodeExtensions "SpinGroupTag | " >
<!-- Now define the node so that content and attribute types are valid.
This only works when child content is specified explicitly.
The author must carefully match the DTD patterns without error!
Complete examples for all node types are found in ProtoTagExamples.xml
-->
<!ELEMENT SpinGroupTag (fieldValue*, children?) >
<!ATTLIST SpinGroupTag
translation NMTOKENS "0 0 0"
rotation NMTOKENS "0 0 1 0"
center NMTOKENS "0 0 0"
cycleInterval NMTOKEN "1"
nodeTypeHint NMTOKEN #FIXED "Group"
DEF ID #IMPLIED
USE IDREF #IMPLIED>
<!-- Detailed issues and variations regarding type declarations for nodes:
XML rules say that parameter entities cannot be used inside markup
declarations in an internal subset. Also, &GeneralEntities; cannot
be used inside markup declarations in an internal subset. This
unfortunately means that all node declarations must be fully and
explicitly enumerated, i.e. all of the parameter entity and
general entity declarations in the external DTD are not usable.
Bleah, too bad. Be sure to also consider whether each of the
declared PROTOs should allow each other as child content.
Example test-case node declarations follow.
Correctly enumerated case for a grouping node:
<!ELEMENT SpinGroupTag (fieldValue*, children?) >
Simple nonvalidating/forgiving case (also good for multiple PROTOs):
<!ELEMENT SpinGroupTag ANY >
Nodes that contain no other content nodes are easily defined:
<!ELEMENT SpinGroupTag EMPTY >
Simple scene-specific case:
<!ELEMENT SpinGroupTag ( children ) >
The following two attempts fail regardless of entities definitions,
again because parameter entities are not allowed in the internal subset:
<!ELEMENT SpinGroupTag ( &percent;ChildrenNodes; )* >
<!ELEMENT SpinGroupTag ( &ChildrenNodes; )* >
Actual scene follows which simultaneously and compatibly using a SpinGroup
prototype via <ProtoDeclare>, <ProtoInstance>, and <SpinGroupTag> tags.
-->
]>
<X3D>
<head>
<meta
name='filename'
content='SpinGroupInternalSubsetDeclaration.xml'/>
<meta
name='author'
content='Don Brutzman'/>
<meta
name='revised'
content='22 January 2000'/>
<meta
name='description'
content='SpinGroup PROTO example content to test DTD modularization and extensibility'/>
<meta
name='url'
content='http://www.web3d.org/TaskGroups/x3d/translation/examples/SpinGroupExternalDeclaration.xml'/>
<meta
name='generator'
content='X3D-Edit, http://www.web3d.org/TaskGroups/x3d/translation/README.X3D-Edit.html'/>
</head>
<Scene>
<-- Declaring the SpinGroupTag PROTO, so that translations of internally defined SpinGroupTag to VRML can work: -->
<ProtoDeclare
name='SpinGroupTag'>
<field
name='translation'
type='Vector3'
value='0 0 0'
IS='SpinGroupTransform-TagVersion.translation'
vrml97Hint='exposedField'/>
<field
name='rotation'
type='Rotation'
value='0 0 1 0'
IS='SpinGroupTransform-TagVersion.rotation'/>
<field
name='center'
type='Vector3'
value='0 0 0'
IS='SpinGroupTransform-TagVersion.center'/>
<field
name='cycleInterval'
type='Time'
IS='SpinGroupTimeSensor-TagVersion.cycleInterval'/>
<field
name='children'
type='Nodes'
IS='SpinGroupTransform-TagVersion.children'/>
<-- SpinGroupTransform is first node, which determines node type, and encloses children for instances. -->
<Transform
DEF='SpinGroupTransform-TagVersion'
rotation='1 0 0 0'/>
<OrientationInterpolator
DEF='SpinGroupOrientationInterpolator-TagVersion'
keyValue='0 1 0 0.0, 0 1 0 -3.14159, 0 1 0 -6.28318'
key='0.0, 0.50, 1.0'/>
<TimeSensor
DEF='SpinGroupTimeSensor-TagVersion'
loop='true'/>
<ROUTE
fromNode='SpinGroupTimeSensor-TagVersion'
fromField='fraction_changed'
toNode='SpinGroupOrientationInterpolator-TagVersion'
toField='set_fraction'/>
<ROUTE
fromNode='SpinGroupOrientationInterpolator-TagVersion'
fromField='value_changed'
toNode='SpinGroupTransform-TagVersion'
toField='set_rotation'/>
</ProtoDeclare>
<ProtoDeclare
name='SpinGroup'>
<field
name='translation'
type='Vector3'
value='0 0 0'
IS='SpinGroupTransform.translation'/>
<field
name='rotation'
type='Rotation'
value='0 0 1 0'
IS='SpinGroupTransform.rotation'/>
<field
name='center'
type='Vector3'
value='0 0 0'
IS='SpinGroupTransform.center'/>
<field
name='cycleInterval'
type='Time'
IS='SpinGroupTimeSensor.cycleInterval'/>
<field
name='children'
type='Nodes'
IS='SpinGroupTransform.children'/>
<-- SpinGroupTransform is first node, which determines node type, and encloses children for instances. -->
<Transform
DEF='SpinGroupTransform'/>
<OrientationInterpolator
DEF='SpinGroupOrientationInterpolator'
keyValue='0 1 0 0.0, 0 1 0 -3.14159, 0 1 0 -6.28318'
key='0.0, 0.50, 1.0'/>
<TimeSensor
DEF='SpinGroupTimeSensor'
loop='true'/>
<ROUTE
fromNode='SpinGroupTimeSensor'
fromField='fraction_changed'
toNode='SpinGroupOrientationInterpolator'
toField='set_fraction'/>
<ROUTE
fromNode='SpinGroupOrientationInterpolator'
fromField='value_changed'
toNode='SpinGroupTransform'
toField='set_rotation'/>
</ProtoDeclare>
<Viewpoint
position='0 0 15'
description='SpinGroup Examples'/>
<NavigationInfo
type='EXAMINE'/>
<-- Instantiating the SpinGroupTag using a customized tag: -->
<SpinGroupTag
DEF='instanceOne'
translation='0 4 0'
cycleInterval='8'
center='0 0 0'
nodeTypeHint='Group'
rotation='0 0 1 0'>
<children>
<Shape>
<appearance><Appearance
DEF='AQUAMARINE'>
<material><Material
diffuseColor='0.1 0.8 0.8'/>
</material>
</Appearance>
</appearance>
<geometry><Text
string='SpinGroupTag example 1, single child'>
<-- note justify attribute is type Strings, requires quotes -->
<fontStyle><FontStyle
DEF='CENTER_FONT'
justify='"MIDDLE"'
style='BOLD'/>
</fontStyle>
</Text>
</geometry>
</Shape>
</children>
</SpinGroupTag>
<-- Instantiating the SpinGroup PROTO using a ProtoInstance tag: -->
<ProtoInstance
name='SpinGroup'
DEF='instanceTwo'>
<fieldValue
fieldName='translation'
value='0 1 0'/>
<fieldValue
fieldName='cycleInterval'
value='12'/>
<children>
<Shape>
<geometry><Text
string='SpinGroup ProtoInstance example 2, single child'>
<fontStyle><FontStyle
USE='CENTER_FONT'/>
</fontStyle>
</Text>
</geometry>
</Shape>
</children>
</ProtoInstance>
<-- Instantiating the SpinGroup PROTO with multiple Node children: -->
<ProtoInstance
name='SpinGroup'
DEF='instanceThree'>
<fieldValue
fieldName='translation'
value='0 -2 0'/>
<fieldValue
fieldName='cycleInterval'
value='20'/>
<children>
<Shape>
<appearance><Appearance
USE='AQUAMARINE'/>
</appearance>
<geometry><Text
string='"SpinGroup ProtoInstance" "example 3, first child"'>
<fontStyle><FontStyle
USE='CENTER_FONT'/>
</fontStyle>
</Text>
</geometry>
</Shape>
<Transform
translation='0 -2 0'>
<children><Shape>
<geometry><Text
string='example 3, second child'>
<fontStyle><FontStyle
USE='CENTER_FONT'/>
</fontStyle>
</Text>
</geometry>
</Shape>
</children>
</Transform>
</children>
</ProtoInstance>
</Scene>
</X3D>
<-- Tag color codes: <field> <NodeName attribute='value'/> </field> -->
|
#VRML V2.0 utf8
# X3D-to-VRML-97 XSL translation autogenerated by X3dToVrml97.xsl
# http://www.web3D.org/TaskGroups/x3d/translation/X3dToVrml97.xsl
# [X3D]
# [Header]
# [meta] filename: SpinGroupInternalSubsetDeclaration.xml
# [meta] author: Don Brutzman
# [meta] revised: 22 January 2000
# [meta] description: SpinGroup PROTO example content to test DTD modularization and extensibility
# [meta] url: http://www.web3d.org/TaskGroups/x3d/translation/examples/SpinGroupExternalDeclaration.xml
# [meta] generator: X3D-Edit, http://www.web3d.org/TaskGroups/x3d/translation/README.X3D-Edit.html
# [Scene]
# Declaring the SpinGroupTag PROTO, so that translations of internally defined SpinGroupTag to VRML can work:
PROTO SpinGroupTag [
exposedField SFVec3f translation 0 0 0
exposedField SFRotation rotation 0 0 1 0
exposedField SFVec3f center 0 0 0
exposedField SFTime cycleInterval -1
exposedField MFNode children [ ]
# SpinGroupTransform is first node, which determines node type, and encloses children for instances.
] {
# SpinGroupTransform is first node, which determines node type, and encloses children for instances.
DEF SpinGroupTransform-TagVersion Transform {
translation IS translation
rotation IS rotation
center IS center
children IS children
rotation 1 0 0 0
}
DEF SpinGroupOrientationInterpolator-TagVersion OrientationInterpolator {
keyValue [ 0 1 0 0.0, 0 1 0 -3.14159, 0 1 0 -6.28318 ]
key [ 0.0, 0.50, 1.0 ]
}
DEF SpinGroupTimeSensor-TagVersion TimeSensor {
cycleInterval IS cycleInterval
loop TRUE
}
ROUTE SpinGroupTimeSensor-TagVersion.fraction_changed TO SpinGroupOrientationInterpolator-TagVersion.set_fraction
ROUTE SpinGroupOrientationInterpolator-TagVersion.value_changed TO SpinGroupTransform-TagVersion.set_rotation
}
PROTO SpinGroup [
exposedField SFVec3f translation 0 0 0
exposedField SFRotation rotation 0 0 1 0
exposedField SFVec3f center 0 0 0
exposedField SFTime cycleInterval -1
exposedField MFNode children [ ]
# SpinGroupTransform is first node, which determines node type, and encloses children for instances.
] {
# SpinGroupTransform is first node, which determines node type, and encloses children for instances.
DEF SpinGroupTransform Transform {
translation IS translation
rotation IS rotation
center IS center
children IS children
}
DEF SpinGroupOrientationInterpolator OrientationInterpolator {
keyValue [ 0 1 0 0.0, 0 1 0 -3.14159, 0 1 0 -6.28318 ]
key [ 0.0, 0.50, 1.0 ]
}
DEF SpinGroupTimeSensor TimeSensor {
cycleInterval IS cycleInterval
loop TRUE
}
ROUTE SpinGroupTimeSensor.fraction_changed TO SpinGroupOrientationInterpolator.set_fraction
ROUTE SpinGroupOrientationInterpolator.value_changed TO SpinGroupTransform.set_rotation
}
Viewpoint {
position 0 0 15
description "SpinGroup Examples"
}
NavigationInfo {
type [ "EXAMINE" ]
}
# Instantiating the SpinGroupTag using a customized tag:
DEF instanceOne SpinGroupTag {
translation 0 4 0
cycleInterval 8
center 0 0 0
rotation 0 0 1 0
children [
Shape {
appearance DEF AQUAMARINE Appearance {
material Material {
diffuseColor 0.1 0.8 0.8
}
}
geometry Text {
string [ "SpinGroupTag example 1, single child" ]
# note justify attribute is type Strings, requires quotes
fontStyle DEF CENTER_FONT FontStyle {
justify [ "MIDDLE" ]
style "BOLD"
}
}
}
]
}
# Instantiating the SpinGroup PROTO using a ProtoInstance tag:
DEF instanceTwo SpinGroup {
children [
Shape {
geometry Text {
string [ "SpinGroup ProtoInstance example 2, single child" ]
fontStyle USE CENTER_FONT
}
}
]
translation 0 1 0
cycleInterval 12
}
# Instantiating the SpinGroup PROTO with multiple Node children:
DEF instanceThree SpinGroup {
children [
Shape {
appearance USE AQUAMARINE
geometry Text {
string [ "SpinGroup ProtoInstance" "example 3, first child" ]
fontStyle USE CENTER_FONT
}
}
Transform {
translation 0 -2 0
children [
Shape {
geometry Text {
string [ "example 3, second child" ]
fontStyle USE CENTER_FONT
}
}
]
}
]
translation 0 -2 0
cycleInterval 20
}
|
WrapperTagsExample
shows that the earlier (February 2000)
Document Type Definition (DTD)
x3d-draft.dtd
can handle the proposed wrapper tags (<children> etc.).
This example also shows how such wrappers double all tags to
add bloat - the number of tags went from 33 to 67. This example
also shows that the topology of the scene graph
becomes different than a VRML 97 scene graph. This problem is
very significant and unavoidable for autogenerated DOM-compliant components.
The duplicate node problem occurs because,
unlike all the other tags in X3D, wrappers are merely field labels
rather than actual nodes that affect rendering.
A useful check that proves wrapper tags are not needed:
they add no information. There is already a one-to-one correspondence
between X3D and VRML 97 without wrapper tags.
Since the field names corresponding
to VRML 97 nodes are well defined, each corresponds directly and unambiguously to parent
nodes. This was a primary issue in the "wrapper tag" debate January-March 2000.
Further discussion on this topic is available at
| WrapperTagsExample.xml,
WrapperTagsExample.html |
WrapperTagsExample.wrl |
<X3D>
<head>
<meta
name='filename'
content='WrapperTagsExample.xml'/>
<meta
name='description'
content='"Demonstrate/test field-name wrapper tags" "Scene includes 33 node tags, 34 wrapper tags, 67 tags total"'/>
<meta
name='revised'
content='21 April 2000'/>
<meta
name='author'
content='Don Brutzman'/>
<meta
name='url'
content='http://www.web3D.org/TaskGroups/x3d/translation/examples/WrapperTagsExample.xml'/>
<meta
name='generator'
content='X3D-Edit, http://www.web3d.org/TaskGroups/x3d/translation/README.X3D-Edit.html'/>
</head>
<Scene>
<Transform
translation='0 -3 0'>
<children><Shape>
<-- *** wrapper tag *** -->
<geometry><Cylinder
height='1.5'
radius='.75'/>
<-- *** wrapper tag *** -->
</geometry>
<-- *** wrapper tag *** -->
<appearance><Appearance>
<-- *** wrapper tag *** -->
<texture><ImageTexture
url='"earth-topo-small.png" "earth-topo-small.gif"'/>
<-- *** wrapper tag *** -->
</texture>
<-- *** wrapper tag *** -->
<textureTransform><TextureTransform
rotation='-2.356'
scale='1 1'/>
<-- *** wrapper tag *** -->
</textureTransform>
</Appearance>
<-- *** wrapper tag *** -->
</appearance>
</Shape>
<-- *** wrapper tag *** -->
</children>
</Transform>
<LOD
center='0 0 0'>
<level><Shape>
<-- *** wrapper tag *** -->
<appearance><Appearance>
<-- *** wrapper tag *** -->
<material><Material
diffuseColor='.6 .1 .1'/>
<-- *** wrapper tag *** -->
</material>
</Appearance>
<-- *** wrapper tag *** -->
</appearance>
<-- *** wrapper tag *** -->
<geometry><Text
string='"wrapper tags are " "field container names" "that hold nodes"'>
<-- *** wrapper tag *** -->
<fontStyle><FontStyle
justify='"MIDDLE"'/>
<-- *** wrapper tag *** -->
</fontStyle>
</Text>
<-- *** wrapper tag *** -->
</geometry>
</Shape>
<Sound>
<-- *** wrapper tag *** -->
<source><AudioClip
stopTime='0'/>
<-- *** wrapper tag *** -->
</source>
</Sound>
<-- *** wrapper tag *** -->
</level>
</LOD>
<Switch
whichChoice='0'>
<choice><Shape>
<-- *** wrapper tag *** -->
<geometry><IndexedFaceSet
coordIndex='0 1 2 3 -1'>
<-- *** wrapper tag *** -->
<color><Color
color='0 0 1, 0 1 0, 1 0 0, 1 1 1'/>
<-- *** wrapper tag *** -->
</color>
<-- *** wrapper tag *** -->
<coord><Coordinate
point='-5 -3 -2, 5 -3 -2, 5 1 -2, -5 1 -2'/>
<-- *** wrapper tag *** -->
</coord>
<-- *** wrapper tag *** -->
<normal><Normal
vector='0 0 -1, 0 0 -1, 0 0 -1, 0 0 -1'/>
<-- *** wrapper tag *** -->
</normal>
<-- *** wrapper tag *** -->
<texCoord><TextureCoordinate
point='-1 -1, -1 1, 1 1, 1 -1'/>
<-- *** wrapper tag *** -->
</texCoord>
</IndexedFaceSet>
<-- *** wrapper tag *** -->
</geometry>
</Shape>
<-- *** wrapper tag *** -->
</choice>
</Switch>
<NavigationInfo
type='"EXAMINE" "ANY"'/>
</Scene>
</X3D>
<-- Tag color codes: <field> <NodeName attribute='value'/> </field> -->
|
#VRML V2.0 utf8
# X3D-to-VRML-97 XSL translation autogenerated by X3dToVrml97.xsl
# http://www.web3D.org/TaskGroups/x3d/translation/X3dToVrml97.xsl
# [X3D]
# [Header]
# [meta] filename: WrapperTagsExample.xml
# [meta] description: "Demonstrate/test field-name wrapper tags" "Scene includes 33 node tags, 34 wrapper tags, 67 tags total"
# [meta] revised: 21 April 2000
# [meta] author: Don Brutzman
# [meta] url: http://www.web3D.org/TaskGroups/x3d/translation/examples/WrapperTagsExample.xml
# [meta] generator: X3D-Edit, http://www.web3d.org/TaskGroups/x3d/translation/README.X3D-Edit.html
# [Scene]
Transform {
translation 0 -3 0
children [
Shape {
# *** wrapper tag ***
geometry Cylinder {
height 1.5
radius .75
}
# *** wrapper tag ***
# *** wrapper tag ***
appearance Appearance {
# *** wrapper tag ***
texture ImageTexture {
url [ "earth-topo-small.png" "earth-topo-small.gif" ]
}
# *** wrapper tag ***
# *** wrapper tag ***
textureTransform TextureTransform {
rotation -2.356
scale 1 1
}
# *** wrapper tag ***
}
# *** wrapper tag ***
}
]
}
LOD {
center 0 0 0
level [
Shape {
# *** wrapper tag ***
appearance Appearance {
# *** wrapper tag ***
material Material {
diffuseColor .6 .1 .1
}
# *** wrapper tag ***
}
# *** wrapper tag ***
# *** wrapper tag ***
geometry Text {
string [ "wrapper tags are " "field container names" "that hold nodes" ]
# *** wrapper tag ***
fontStyle FontStyle {
justify [ "MIDDLE" ]
}
# *** wrapper tag ***
}
# *** wrapper tag ***
}
Sound {
# *** wrapper tag ***
source AudioClip {
stopTime 0
}
# *** wrapper tag ***
}
]
}
Switch {
whichChoice 0
choice [
Shape {
# *** wrapper tag ***
geometry IndexedFaceSet {
coordIndex [ 0 1 2 3 -1 ]
# *** wrapper tag ***
color Color {
color [ 0 0 1, 0 1 0, 1 0 0, 1 1 1 ]
}
# *** wrapper tag ***
# *** wrapper tag ***
coord Coordinate {
point [ -5 -3 -2, 5 -3 -2, 5 1 -2, -5 1 -2 ]
}
# *** wrapper tag ***
# *** wrapper tag ***
normal Normal {
vector [ 0 0 -1, 0 0 -1, 0 0 -1, 0 0 -1 ]
}
# *** wrapper tag ***
# *** wrapper tag ***
texCoord TextureCoordinate {
point [ -1 -1, -1 1, 1 1, 1 -1 ]
}
# *** wrapper tag ***
}
# *** wrapper tag ***
}
]
}
NavigationInfo {
type [ "EXAMINE" "ANY" ]
}
|
X3dRetreatProtoExercise
presents a series of examples in a single scene
provided as solutions to the
Proto Exercise
posed by Chris Marrin of SONY at the
X3D Retreat.
Several of these examples
included invalid VRML syntax, which can be expressed in X3D but is not necessarily
translatable back into VRML 97. Thus the VRML translation includes unavoidable syntactic and semantic errors.
In any case, these are helpful and interesting examples.
| X3dRetreatProtoExercise.xml,
X3dRetreatProtoExercise.html |
X3dRetreatProtoExercise.wrl |
<X3D>
<head>
<meta
name='filename'
content='X3dRetreatProtoExercise.xml'/>
<meta
name='author'
content='Don Brutzman'/>
<meta
name='revised'
content='16 April 2000'/>
<meta
name='description'
content='Solutions to the Proto Exercise posed by Chris Marrin of SONY at the X3D Retreat.'/>
<meta
name='reference'
content='http://www.web3D.org/TaskGroups/x3d/sony/X3dRetreatProtoEx.html'/>
<meta
name='url'
content='http://www.web3D.org/TaskGroups/x3d/translation/examples/X3dRetreatProtoExercise.xml'/>
<meta
name='generator'
content='X3D-Edit, http://www.web3D.org/TaskGroups/x3d/translation/README.X3D-Edit.html'/>
</head>
<Scene>
<-- ============= Example 1 ============= -->
<-- GeometryNode and ChildNode are not valid node types, so used type Node/Nodes instead. -->
<-- Note exercise example is incomplete and has no node(s) defined for body content. -->
<-- X3D DTD can correctly detect these content errors if they occur, scene will be well-formed but not valid. -->
<ProtoDeclare
name='MyProto'>
<field
name='geometry'
type='Node'
value='NULL'/>
<field
name='children'
type='Nodes'
value='NULL'/>
<WorldInfo
info='Added this node as PROTO body, so that the example can be valid VRML'/>
</ProtoDeclare>
<-- ============= Example 2 ============= -->
<-- Adding new fields to an existing node. -->
<-- Corrected example by moving Material from PROTO interface to PROTO body. -->
<ProtoDeclare
name='PhysicalMaterial'>
<field
name='mass'
type='Float'
value='1'/>
<field
name='hardness'
type='Float'
value='1'/>
<field
name='friction'
type='Float'
value='1'/>
<Material
DEF='M'/>
<-- EXPORT M (this is Blendo nomenclature, not VRML 97) -->
</ProtoDeclare>
<-- ============= Example 3a ============= -->
<-- Consider new possibility of declaring a field PROTO. -->
<-- Again no body provided in this example (since goal is a new FieldPROTO construct). -->
<ProtoDeclare
name='Plane'>
<-- FIELDPROTO -->
<field
name='normal'
type='Vector3'
value='0 0 1'/>
<field
name='distance'
type='Float'
value='0'/>
<WorldInfo
info='Added this node as PROTO body, so that the example can be valid VRML'/>
</ProtoDeclare>
<-- ============= Example 3b ============= -->
<-- Example 3b employs the supposed field PROTO. -->
<-- X3D DTD currently restricts field types to VRML 97 types, and so flags these untyped fields as an error. -->
<-- We could allow unspecified field types, but would lose checking (and authoring suggestions) on existing types. -->
<ProtoDeclare
name='BSPLeaf'>
<-- Intentionally invalid type values used. -->
<field
name='plane'
type='Plane'
value='0 0 1 0'/>
<field
name='front'
type='BSPLeaf'
value='NULL'/>
<field
name='back'
type='BSPLeaf'
value='NULL'/>
<field
name='children'
type='Nodes'
value='NULL'/>
<WorldInfo
info='Added this node as PROTO body, so that the example can be valid VRML'/>
</ProtoDeclare>
<-- ============= Example 4 ============= -->
<-- PROTO with routes. Example nodes moved from interface definition to body. -->
<ProtoDeclare
name='SpinGroup'>
<-- Example 4 calls three of the field references ROUTEs, but they actually match VRML 97 'IS' statements. -->
<field
IS='TS.cycleInterval'
name='speed'
type='Time'
value='1'/>
<field
IS='TS.startTime'
name='startTime'
type='Time'
value='0'/>
<field
IS='TS.stopTime'
name='stopTime'
type='Time'
value='0'/>
<-- Corrected example by moving nodes T, G, TS and OI from PROTO interface to PROTO body. -->
<Transform
DEF='T'>
<Group
DEF='G'/>
<-- EXPORT G (this is Blendo nomenclature, not VRML 97) -->
</Transform>
<TimeSensor
DEF='TS'
loop='true'/>
<OrientationInterpolator
DEF='OI'
key='0 0.25 0.5 0.75 1'
keyValue='0 1 0 0, 0 1 0 1.57, 0 1 0 3.14, 0 1 0 4.71, 0 1 0 0'/>
<ROUTE
fromField='fraction_changed'
fromNode='TS'
toField='set_fraction'
toNode='OI'/>
<ROUTE
fromField='value_changed'
fromNode='OI'
toField='set_rotation'
toNode='T'/>
</ProtoDeclare>
<-- ============= Example 5 ============= -->
<-- Show "overriding of a method of the inherited interface." -->
<-- X3D DTD currently restricts field types to VRML 97 types, other values can be entered but are flagged as invalid. -->
<ProtoDeclare
name='BSPLeaf'>
<field
IS='RENDERscript.plane'
name='plane'
type='Plane'
value='0 0 1 0'/>
<field
IS='RENDERscript.front'
name='front'
type='BSPLeaf'
value='NULL'/>
<field
IS='RENDERscript.back'
name='back'
type='BSPLeaf'
value='NULL'/>
<-- Here is a curious example problem: an unattached function overriding an unspecified
(but commonly occuring) implementation-specific browser function. -->
<-- This solution wraps a Script node around the render () function to maintain VRML 97 semantics. -->
<-- Preprocessing can automate this process of wrapping a Script node around inline functions. -->
<-- Corrected example by moving Group G (renamed GG) from PROTO interface to PROTO body. -->
<Group
DEF='GG'/>
<Script
DEF='RENDERscript'>
<![CDATA[
javascript:
function render()
{
var result = plane.onPlane(System.sceneManager.getCameraPos());
if (result < 0) {
front.render();
G.render();
back.render();
}
else if (result > 0) {
back.render();
G.render();
front.render();
}
else {
front.render();
back.render();
}
}
]]>
</Script>
</ProtoDeclare>
<-- ============= Example 6 ============= -->
<-- Show "inclusion of field scripts which execute whenever the field receives an event." -->
<ProtoDeclare
name='AnimatedMaterial'>
<-- FROM is Blendo nomenclature, expressed using IS references. -->
<field
IS='timeBase.startTime'
name='startTime'
type='Time'
value='0'/>
<field
IS='timeBase.stopTime'
name='stopTime'
type='Time'
value='0'/>
<field
name='startColor'
type='Color'
value='0 0 0'/>
<field
name='endColor'
type='Color'
value='0 0 0'/>
<-- During the December 3 1999 x3d-contributors meeting, Chris showed how -->
<-- the VRML 97 specification allows an SF/MFNode field node to be initialized with node content. -->
<-- This construct is now permitted by DTD, here is an example: -->
<field
name='initializedChildren'
type='Nodes'>
<Group
bboxCenter='1 2 3'/>
<Transform
translation='1 2 3'/>
</field>
<-- Moved the following content nodes from PROTO interface to PROTO body in order to match valid VRML 97 content. -->
<Material
DEF='MM'/>
<ProtoInstance
name='IntervalSensor'>
<ProtoInstance
DEF='timeBase'
name='TimeBase'/>
</ProtoInstance>
<ColorInterpolator
DEF='CI'
key='0 0.5 1'/>
<Script
DEF='AnimatedMaterialInitialize'>
<![CDATA[
javascript:
{ // simple exercise for reader to initialize/update PROTO field values
// to the MM Material node. Be sure to add some IS statements to match.
}
]]>
</Script>
<ROUTE
fromField='value_changed'
fromNode='CI'
toField='set_diffuseColor'
toNode='MM'/>
</ProtoDeclare>
</Scene>
</X3D>
<-- Tag color codes: <NodeName attribute='value'/> -->
|
#VRML V2.0 utf8
# X3D-to-VRML-97 XSL translation autogenerated by X3dToVrml97.xsl
# http://www.web3D.org/TaskGroups/x3d/translation/X3dToVrml97.xsl
# [X3D]
# [Header]
# [meta] filename: X3dRetreatProtoExercise.xml
# [meta] author: Don Brutzman
# [meta] revised: 16 April 2000
# [meta] description: Solutions to the Proto Exercise posed by Chris Marrin of SONY at the X3D Retreat.
# [meta] reference: http://www.web3D.org/TaskGroups/x3d/sony/X3dRetreatProtoEx.html
# [meta] url: http://www.web3D.org/TaskGroups/x3d/translation/examples/X3dRetreatProtoExercise.xml
# [meta] generator: X3D-Edit, http://www.web3D.org/TaskGroups/x3d/translation/README.X3D-Edit.html
# [Scene]
# ============= Example 1 =============
# GeometryNode and ChildNode are not valid node types, so used type Node/Nodes instead.
# Note exercise example is incomplete and has no node(s) defined for body content.
# X3D DTD can correctly detect these content errors if they occur, scene will be well-formed but not valid.
PROTO MyProto [
exposedField SFNode geometry NULL
exposedField MFNode children [ NULL ]
] {
WorldInfo {
info [ "Added this node as PROTO body, so that the example can be valid VRML" ]
}
}
# ============= Example 2 =============
# Adding new fields to an existing node.
# Corrected example by moving Material from PROTO interface to PROTO body.
PROTO PhysicalMaterial [
exposedField SFFloat mass 1
exposedField SFFloat hardness 1
exposedField SFFloat friction 1
# EXPORT M (this is Blendo nomenclature, not VRML 97)
] {
DEF M Material {
}
# EXPORT M (this is Blendo nomenclature, not VRML 97)
}
# ============= Example 3a =============
# Consider new possibility of declaring a field PROTO.
# Again no body provided in this example (since goal is a new FieldPROTO construct).
PROTO Plane [
# FIELDPROTO
exposedField SFVec3f normal 0 0 1
exposedField SFFloat distance 0
] {
# FIELDPROTO
WorldInfo {
info [ "Added this node as PROTO body, so that the example can be valid VRML" ]
}
}
# ============= Example 3b =============
# Example 3b employs the supposed field PROTO.
# X3D DTD currently restricts field types to VRML 97 types, and so flags these untyped fields as an error.
# We could allow unspecified field types, but would lose checking (and authoring suggestions) on existing types.
PROTO BSPLeaf [
# Intentionally invalid type values used.
exposedField Plane plane 0 0 1 0 # unknown type!
exposedField BSPLeaf front NULL # unknown type!
exposedField BSPLeaf back NULL # unknown type!
exposedField MFNode children [ NULL ]
] {
# Intentionally invalid type values used.
WorldInfo {
info [ "Added this node as PROTO body, so that the example can be valid VRML" ]
}
}
# ============= Example 4 =============
# PROTO with routes. Example nodes moved from interface definition to body.
PROTO SpinGroup [
# Example 4 calls three of the field references ROUTEs, but they actually match VRML 97 'IS' statements.
exposedField SFTime speed 1
exposedField SFTime startTime 0
exposedField SFTime stopTime 0
# Corrected example by moving nodes T, G, TS and OI from PROTO interface to PROTO body.
] {
# Example 4 calls three of the field references ROUTEs, but they actually match VRML 97 'IS' statements.
# Corrected example by moving nodes T, G, TS and OI from PROTO interface to PROTO body.
DEF T Transform {
children [
DEF G Group {
}
# EXPORT G (this is Blendo nomenclature, not VRML 97)
]
}
DEF TS TimeSensor {
cycleInterval IS speed
startTime IS startTime
stopTime IS stopTime
loop TRUE
}
DEF OI OrientationInterpolator {
key [ 0 0.25 0.5 0.75 1 ]
keyValue [ 0 1 0 0, 0 1 0 1.57, 0 1 0 3.14, 0 1 0 4.71, 0 1 0 0 ]
}
ROUTE TS.fraction_changed TO OI.set_fraction
ROUTE OI.value_changed TO T.set_rotation
}
# ============= Example 5 =============
# Show "overriding of a method of the inherited interface."
# X3D DTD currently restricts field types to VRML 97 types, other values can be entered but are flagged as invalid.
PROTO BSPLeaf [
exposedField Plane plane 0 0 1 0 # unknown type!
exposedField BSPLeaf front NULL # unknown type!
exposedField BSPLeaf back NULL # unknown type!
# Here is a curious example problem: an unattached function overriding an unspecified (but commonly occuring) implementation-specific browser function.
# This solution wraps a Script node around the render () function to maintain VRML 97 semantics.
# Preprocessing can automate this process of wrapping a Script node around inline functions.
# Corrected example by moving Group G (renamed GG) from PROTO interface to PROTO body.
] {
# Here is a curious example problem: an unattached function overriding an unspecified (but commonly occuring) implementation-specific browser function.
# This solution wraps a Script node around the render () function to maintain VRML 97 semantics.
# Preprocessing can automate this process of wrapping a Script node around inline functions.
# Corrected example by moving Group G (renamed GG) from PROTO interface to PROTO body.
DEF GG Group {
}
DEF RENDERscript Script {
url "javascript:
function render()
{
var result = plane.onPlane(System.sceneManager.getCameraPos());
if (result < 0) {
front.render();
G.render();
back.render();
}
else if (result > 0) {
back.render();
G.render();
front.render();
}
else {
front.render();
back.render();
}
}
"
}
}
# ============= Example 6 =============
# Show "inclusion of field scripts which execute whenever the field receives an event."
PROTO AnimatedMaterial [
# FROM is Blendo nomenclature, expressed using IS references.
exposedField SFTime startTime 0
exposedField SFTime stopTime 0
exposedField SFColor startColor 0 0 0
exposedField SFColor endColor 0 0 0
# During the December 3 1999 x3d-contributors meeting, Chris showed how
# the VRML 97 specification allows an SF/MFNode field node to be initialized with node content.
# This construct is now permitted by DTD, here is an example:
exposedField MFNode initializedChildren [
Group {
bboxCenter 1 2 3
}
Transform {
translation 1 2 3
}
]
# Moved the following content nodes from PROTO interface to PROTO body in order to match valid VRML 97 content.
] {
# FROM is Blendo nomenclature, expressed using IS references.
# During the December 3 1999 x3d-contributors meeting, Chris showed how
# the VRML 97 specification allows an SF/MFNode field node to be initialized with node content.
# This construct is now permitted by DTD, here is an example:
# Moved the following content nodes from PROTO interface to PROTO body in order to match valid VRML 97 content.
DEF MM Material {
}
IntervalSensor {
# XSL-translation warning: nodeTypeHint unknown for TimeBase
DEF timeBase TimeBase {
}
}
DEF CI ColorInterpolator {
key [ 0 0.5 1 ]
}
DEF AnimatedMaterialInitialize Script {
url "javascript:
{ // simple exercise for reader to initialize/update PROTO field values
// to the MM Material node. Be sure to add some IS statements to match.
}
"
}
ROUTE CI.value_changed TO MM.set_diffuseColor
}
|
Revised: 28 November 2000.
Your feedback is welcome. Please send e-mail comments to the X3D Task Group chair
Don Brutzman (brutzman@nps.navy.mil)
or subscribe to the appropriate
X3D mailing list.
The Uniform Resource Locator (URL) for this home page is
www.web3D.org/TaskGroups/x3d/translation/examples/examples.html
|
