####################################################################################################
#
# Invoking X3D model self-test:
#
#   $ python NormalExample.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='Interchange',version='3.3',
  head=head(
    children=[
    meta(content='NormalExample.x3d',name='title'),
    meta(content='A simple illustration of the Normal node on the coloring of triangles.',name='description'),
    meta(content='22 May 2006',name='created'),
    meta(content='27 July 2024',name='modified'),
    meta(content='Leonard Daly and Don Brutzman',name='creator'),
    meta(content='https://X3dGraphics.com',name='reference'),
    meta(content='https://www.web3d.org/x3d/content/examples/X3dResources.html',name='reference'),
    meta(content='Copyright 2006, Daly Realism and Don Brutzman',name='rights'),
    meta(content='X3D book, X3D graphics, X3D-Edit, http://www.x3dGraphics.com',name='subject'),
    meta(content='https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter13GeometryTrianglesQuadrilaterals/NormalExample.x3d',name='identifier'),
    meta(content='X3D-Edit 4.0, https://www.web3d.org/x3d/tools/X3D-Edit',name='generator'),
    meta(content='../license.html',name='license')]),
  Scene=Scene(
    children=[
    WorldInfo(title='NormalExample.x3d'),
    Viewpoint(description='Book View',orientation=(0,-1,0,0.06),position=(0,0.82,11.21)),
    Background(skyColor=[(1,1,1)]),
    Transform(
      children=[
      Shape(
        appearance=Appearance(DEF='Look',
          material=Material(diffuseColor=(0,.5,.6),shininess=.9,specularColor=(.7,0,0))),
        geometry=IndexedTriangleStripSet(ccw=True,colorPerVertex=True,index=[9,10,11,12,13,-1,14,15,16,17,-1],normalPerVertex=True,solid=False,
          coord=Coordinate(DEF='Points',point=[(-4,1,3),(-2,2,1.5),(-3,4,0.5),(-2,3,1.5),(0,4,0.0),(2,3,1.5),(5,5,-2.5),(4,3,1.5),(6,4,2.0),(-4,1,3),(-2,2,1.0),(-3,4,0.0),(-2,3,1.0),(0,4,0.0),(2,3,1.0),(5,5,-2.0),(4,3,1.5),(6,4,2.0),(0,-2,4),(1,-3,3.5),(1.5,-1.5,3),(0,-1,2),(-.5,0,2.5),(-1.5,1,3),(-2,0,3.5),(-3,-2,2),(-3,-4,3),(2,-4,-2),(0,-3,-.5),(1.3,-1.5,-1),(4,-2,-1.5),(4.2,-4.2,-1),(3,-6,-.5)])))]),
    Transform(translation=(0,-3,0),
      children=[
      Shape(
        appearance=Appearance(USE='Look'),
        geometry=IndexedTriangleStripSet(ccw=True,colorPerVertex=True,index=[9,10,11,12,13,-1,14,15,16,17,-1],normalPerVertex=True,solid=False,
          coord=Coordinate(USE='Points'),
          normal=Normal(vector=[(0,0,1),(0,0,1),(0,0,1),(0,0,1),(0,0,1),(0,0,1),(0,0,1),(0,0,1),(0,0,1),(1,0,0),(0,1,0),(0,0,1),(1,0,0),(0,1,0),(0,0,1),(1,0,0),(0,1,0),(0,0,1)])))])])
)

### X3D model conversion complete ###

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

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