####################################################################################################
#
# Invoking X3D model self-test:
#
#   $ python HelixEaiJava.py
#
# Python package x3d.py package is available 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 in other Python programs:
#
#    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.
#
# Project home page:    # X3D Python Scene Access Interface Library (X3DPSAIL)
#                       # https://www.web3d.org/x3d/stylesheets/python/python.html
# Conversion generator: # https://www.web3d.org/x3d/stylesheets/X3dToPython.xslt
#
####################################################################################################

from x3d import *

newModel=X3D(profile='Immersive',version='3.0',
  head=head(
    children=[
    meta(content='HelixEaiJava.x3d',name='title'),
    meta(content='HelixEaiJavaPage.html',name='example'),
    meta(content='External Authoring Interface (EAI) Java example from VRML 97 Amendment 2 specification.',name='description'),
    meta(content='Vilius Jagminas and Martin Reddy',name='creator'),
    meta(content='Xeena VRML importer, X3D-Edit 3.1, https://www.web3d.org/x3d/content/README.X3D-Edit.html',name='translator'),
    meta(content='Don Brutzman',name='translator'),
    meta(content='11 December 2000',name='created'),
    meta(content='23 June 2003',name='translated'),
    meta(content='20 October 2019',name='modified'),
    meta(content='Under development. VRML 97 EAI support appears inconsistent for various browsers.',name='warning'),
    meta(content='HelixEai.java',name='reference'),
    meta(content='javadoc/index.html',name='reference'),
    meta(content='originals/helix/',name='reference'),
    meta(content='https://www.web3d.org/technicalinfo/specifications/ISO_IEC_14772-All/part2/javaBind.html#Examples',name='reference'),
    meta(content='https://www.web3d.org/technicalinfo/specifications/ISO_IEC_14772-All/index.html',name='reference'),
    meta(content='http://www.parallelgraphics.com/developer/products/cortona/eai',name='reference'),
    meta(content='External Authoring Interface (EAI) Java example',name='subject'),
    meta(content='https://www.web3d.org/x3d/content/examples/Basic/ExternalAuthoringInterface/HelixEaiJava.x3d',name='identifier'),
    meta(content='X3D-Edit 3.3, https://www.web3d.org/x3d/tools/X3D-Edit',name='generator'),
    meta(content='Vrml97ToX3dNist, http://ovrt.nist.gov/v2_x3d.html',name='generator'),
    meta(content='../license.html',name='license')]),
  Scene=Scene(
    children=[
    WorldInfo(title='HelixEaiJava.x3d'),
    Viewpoint(description='HelixEai',orientation=(1.0,0.0,0.0,-0.5),position=(0.0,4.0,5.0)),
    Shape(
      appearance=Appearance(
        material=Material(diffuseColor=(0.8,0.8,0.9),shininess=1.0)),
      geometry=Extrusion(DEF='Coil',creaseAngle=3.14))])
)

### X3D model conversion complete ###

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

print('Self-test diagnostics for HelixEaiJava.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 HelixEaiJava.py load and self-test diagnostics complete.")