####################################################################################################
#
# Invoking X3D model self-test:
#
#   $ python HoleCentered.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='3.2',
  head=head(
    children=[
    component(level=4,name='NURBS'),
    meta(content='HoleCentered.x3d',name='title'),
    meta(content='A NurbsTrimmedSurface node rendering a square centered on the origin in the x-y plane; with sides 8 units length. A trimming curve is used to cut out a circle of radius 1 unit centered on the origin. Red (x), Green (y) and Blue (z) line segments represent the x-y-z unit axes.',name='description'),
    meta(content='HoleCentered.jpg',name='Image'),
    meta(content='Vincent Marchetti',name='creator'),
    meta(content='10 February 2012',name='created'),
    meta(content='20 October 2019',name='modified'),
    meta(content='images/HoleCenteredInstantReality.png',name='Image'),
    meta(content='images/HoleCenteredXj3D.png',name='Image'),
    meta(content='http://www.kshell.com/pages/trimmed_nurbs_demo',name='reference'),
    meta(content='https://www.web3d.org/x3d/content/examples/Basic/NURBS/HoleCentered.x3d',name='identifier'),
    meta(content='Python language scripting',name='generator'),
    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=[
    WorldInfo(title='HoleCentered.x3d'),
    Viewpoint(description='NurbsTrimmedSurface Hole Centered',position=(0,0,12)),
    Background(skyColor=[(1,1,1)]),
    Group(
      children=[
      Shape(
        geometry=LineSet(vertexCount=[2],
          coord=Coordinate(point=[(0,0,0),(1,0,0)])),
        appearance=Appearance(
          material=Material(emissiveColor=(1,0,0)),
          lineProperties=LineProperties(linewidthScaleFactor=2))),
      Shape(
        geometry=LineSet(vertexCount=[2],
          coord=Coordinate(point=[(0,0,0),(0,1,0)])),
        appearance=Appearance(
          material=Material(emissiveColor=(0,1,0)),
          lineProperties=LineProperties(linewidthScaleFactor=2))),
      Shape(
        geometry=LineSet(vertexCount=[2],
          coord=Coordinate(point=[(0,0,0),(0,0,1)])),
        appearance=Appearance(
          material=Material(emissiveColor=(0,0,1)),
          lineProperties=LineProperties(linewidthScaleFactor=2)))]),
    Shape(
      geometry=NurbsTrimmedSurface(solid=False,uDimension=2,uKnot=[-4,-4,4,4],uOrder=2,vDimension=2,vKnot=[-4,-4,4,4],vOrder=2,weight=[1,1,1,1],
        controlPoint=Coordinate(point=[(-4,-4,0),(4,-4,0),(-4,4,0),(4,4,0)]),
        trimmingContour=[
        Contour2D(
          children=[
          NurbsCurve2D(controlPoint=[(-4,-4),(4,-4),(4,4),(-4,4),(-4,-4)],knot=[0,0,0.25,0.5,0.75,1,1],order=2,weight=[1,1,1,1,1])]),
        Contour2D(
          children=[
          NurbsCurve2D(controlPoint=[(1,0),(0.7071,-0.7071),(0,-1),(-0.7071,-0.7071),(-1,0),(-0.7071,0.7071),(0,1),(0.7071,0.7071),(1,0)],knot=[0,0,0,0.25,0.25,0.5,0.5,0.75,0.75,1,1,1],weight=[1,0.7071,1,0.7071,1,0.7071,1,0.7071,1])])]),
      appearance=Appearance(DEF='ksh_appearance_1',
        material=Material(diffuseColor=(0,0,1))))])
)

### X3D model conversion complete ###

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

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