####################################################################################################
#
# Invoking X3D model self-test:
#
#   $ python TestJsonEncoding.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='3.3',
  head=head(
    children=[
    component(level=1,name='CADGeometry'),
    component(level=1,name='H-Anim'),
    unit(category='length',conversionFactor=0.9144,name='Yards'),
    unit(category='angle',conversionFactor=0.0174532925167,name='Degrees'),
    meta(content='TestJsonEncoding.x3d',name='title'),
    meta(content='Don Brutzman',name='creator'),
    meta(content='29 March 2015',name='created'),
    meta(content='20 October 2019',name='modified'),
    meta(content='Test scene to ensure that X3dToJson xslt stylesheet translator properly converts X3D source into JavaScript Object Notation (JSON).',name='description'),
    meta(content='TestJsonEncoding.json',name='reference'),
    meta(content='https://www.web3d.org/wiki/index.php/X3D_JSON_Encoding',name='reference'),
    meta(content='https://www.web3d.org/x3d/content/examples/Basic/development/TestJsonEncoding.x3d',name='identifier'),
    meta(content='https://www.web3d.org/x3d/stylesheets/X3dToJson.xslt',name='reference'),
    meta(content='https://www.web3d.org/x3d/stylesheets/X3dToJson.html',name='reference'),
    meta(content='X3D-Edit 3.3, https://www.web3d.org/x3d/tools/X3D-Edit',name='generator'),
    meta(content='../license.html',name='license')]),
  Scene=Scene(
    children=[
    Comment('excerpted from HelloWorld.x3d'),
    WorldInfo(title='TestJsonEncoding.x3d'),
    Group(
      children=[
      Viewpoint(DEF='ViewUpClose',centerOfRotation=(0,-1,0),description='Hello world!',position=(0,-1,7)),
      Transform(rotation=(0,1,0,3),
        children=[
        Shape(
          geometry=Sphere(),
          appearance=Appearance(
            # Test leading zeroes inserted before (and trailing zeroes inserted after) decimal points: diffuseColor='.1 0.5 1.'

            material=Material(DEF='MaterialLightBlue',diffuseColor=(.1,0.5,1.)),
            texture=ImageTexture(DEF='ImageCloudlessEarth',url=["earth-topo.png","earth-topo.jpg","earth-topo-small.gif","https://www.web3d.org/x3d/content/examples/Basic/earth-topo.png","https://www.web3d.org/x3d/content/examples/Basic/earth-topo.jpg","https://www.web3d.org/x3d/content/examples/Basic/earth-topo-small.gif"])))]),
      Transform(translation=(-.1,-2,-.2),
        children=[
        Comment('Test leading zeroes inserted between -. values: translation=\'-.1 -2 -.2\''),
        Shape(
          geometry=Text(DEF='TextMessage',string=["Hello","JSON!"],
            fontStyle=FontStyle(justify=["MIDDLE","MIDDLE"])),
          appearance=Appearance(
            material=Material(USE='MaterialLightBlue')))])])])
)

### X3D model conversion complete ###

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

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