####################################################################################################
#
# Invoking X3D model self-test:
#
#   $ python CircleLinesSphereLatitude.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='Interactive',version='3.3',
  head=head(
    children=[
    meta(content='CircleLinesSphereLatitude.x3d',name='title'),
    meta(content='Build a sphere outline by using multiple CircleLine circles as latitude rings, with actual semitransparent Sphere and axes added as a visualization hint.',name='description'),
    meta(content='Don Brutzman and Ben Cheng',name='creator'),
    meta(content='12 August 2013',name='created'),
    meta(content='20 October 2019',name='modified'),
    meta(content='CircleLinesSphereCalculations.jpg',name='drawing'),
    meta(content='CircleLinesExample.x3d',name='reference'),
    meta(content='CircleLinesSphereLongitude.x3d',name='reference'),
    meta(content='https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter09EventUtilitiesScripting/CircleLinesSphereLatitude.x3d',name='identifier'),
    meta(content='X3D-Edit, https://www.web3d.org/x3d/tools/X3D-Edit',name='generator'),
    meta(content='../license.html',name='license')]),
  Scene=Scene(
    children=[
    WorldInfo(title='CircleLinesSphereLatitude.x3d'),
    Viewpoint(description='CircleLines Example',position=(0,0,4)),
    Shape(DEF='OuterHullVisualizationHint',
      geometry=Sphere(radius=0.995),
      appearance=Appearance(
        material=Material(diffuseColor=(1,1,1),transparency=0.4))),
    Comment('CircleLines is an IndexedLineSet made out of 24 line segments'),
    Transform(DEF='CircleEquator',rotation=(1,0,0,1.570796),
      children=[
      Shape(DEF='CircleLines',
        geometry=IndexedLineSet(coordIndex=[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,-1],
          coord=Coordinate(point=[(0.000,1.000,0.0),(0.259,0.966,0.0),(0.500,0.866,0.0),(0.707,0.707,0.0),(0.866,0.500,0.0),(0.966,0.259,0.0),(1.000,0.000,0.0),(0.966,-0.259,0.0),(0.866,-0.500,0.0),(0.707,-0.707,0.0),(0.500,-0.866,0.0),(0.259,-0.966,0.0),(0.000,-1.000,0.0),(-0.259,-0.966,0.0),(-0.500,-0.866,0.0),(-0.707,-0.707,0.0),(-0.866,-0.500,0.0),(-0.966,-0.259,0.0),(-1.000,-0.000,0.0),(-0.966,0.259,0.0),(-0.866,0.500,0.0),(-0.707,0.707,0.0),(-0.500,0.866,0.0),(-0.259,0.966,0.0),(0,1,0),(0,-1,0),(1,0,0),(-1,0,0)])),
        appearance=Appearance(DEF='CircleAppearance',
          material=Material(emissiveColor=(1,.5,.2))))]),
    Group(DEF='CircleLatitudes',
      children=[
      Transform(scale=(0.9682,0.9682,0.9682),translation=(0,.25,0),
        children=[
        Transform(USE='CircleEquator')]),
      Transform(scale=(0.8660,0.8660,0.8660),translation=(0,.5,0),
        children=[
        Transform(USE='CircleEquator')]),
      Transform(scale=(0.6614,0.6614,0.6614),translation=(0,.75,0),
        children=[
        Transform(USE='CircleEquator')]),
      Transform(scale=(0.3122,0.3122,0.3122),translation=(0,.95,0),
        children=[
        Transform(USE='CircleEquator')]),
      Shape(DEF='TipTop',
        geometry=PointSet(
          coord=Coordinate(point=[(0,1,0)])),
        appearance=Appearance(USE='CircleAppearance'))]),
    Transform(rotation=(1,0,0,3.141593),
      children=[
      Group(USE='CircleLatitudes')]),
    Comment('Authoring hint: these axes are aligned within local coordinate system'),
    Transform(DEF='CoordinateAxesAdjustedScale',
      children=[
      Transform(DEF='ScaleFeetToMeters',scale=(0.4,0.4,0.4),
        children=[
        Inline(DEF='CoordinateAxes',url=["../../X3dForWebAuthors/Chapter03Grouping/CoordinateAxes.x3d","https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter03Grouping/CoordinateAxes.x3d","../../X3dForWebAuthors/Chapter03Grouping/CoordinateAxes.wrl","https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter03Grouping/CoordinateAxes.wrl"])])])])
)

### X3D model conversion complete ###

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

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