#################################################################################################### # # Invoking X3D model self-test: # # $ python Tetrahedron.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='Tetrahedron.x3d',name='title'), meta(content='Tetrahedron is an 4-sided triangular pyramid with 4 vertices, 4 triangular faces and 6 edges. A regular tetrahedron is a polyhedron assembled from equilateral triangles and is a Platonic solid. Tetrahedron is the simplest of all the ordinary convex polyhedra and the only one that has fewer than 5 faces.',name='description'), meta(content='27 September 2014',name='created'), meta(content='3 September 2025',name='modified'), meta(content='Don Brutzman',name='creator'), meta(content='Tetrahedron.ply',name='reference'), meta(content='https://en.wikipedia.org/wiki/Tetrahedron',name='reference'), meta(content='https://en.wiktionary.org/wiki/tetrahedron',name='reference'), meta(content='https://en.wikipedia.org/wiki/Platonic_solid',name='reference'), meta(content='https://en.wikipedia.org/wiki/Pyramid_(geometry)',name='reference'), meta(content='http://polyhedra.org/poly/show/0/tetrahedron',name='reference'), meta(content='http://www.mathsisfun.com/geometry/tetrahedron.html',name='reference'), meta(content='http://www.kjmaclean.com/Geometry/Tetrahedron.html',name='reference'), meta(content='http://www.georgehart.com/virtual-polyhedra/vp.html',name='reference'), meta(content='http://www.georgehart.com/virtual-polyhedra/vrml/tetrahedron.wrl',name='reference'), meta(content='https://www.web3d.org/x3d/content/examples/X3dForAdvancedModeling/GeometricShapes/Tetrahedron.x3d',name='identifier'), meta(content='Meshlab X3D Exported, http://meshlab.sourceforge.net',name='generator'), 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='Tetrahedron.x3d'), Background(skyColor=[(0.5,1,0.9)]), Viewpoint(description='Tetrahedron from Z axis',position=(0,0,6)), Viewpoint(description='Tetrahedron from X axis',orientation=(0,1,0,1.570796),position=(6,0,0)), Viewpoint(description='Tetrahedron from above',orientation=(1,0,0,-1.570796),position=(0,6,0)), Shape(DEF='Tetrahedron', geometry=IndexedFaceSet(coordIndex=[0,1,2,-1,0,2,3,-1,0,3,1,-1,3,2,1,-1],solid=False, coord=Coordinate(point=[(1,1,1),(-1,1,-1),(-1,-1,1),(1,-1,-1)])), appearance=Appearance( material=Material(diffuseColor=(0.2,0.5,0.8)))), Comment('Authoring hint #1: add a semitransparent Shape with a unit Sphere here to see relative Tetrahedron size'), Comment('Authoring hint #2: these axes are aligned within local coordinate system, be sure to set X3D profile=\'Immersive\' if uncommented and activated'), Transform(DEF='CoordinateAxesAdjustedScale',scale=(2,2,2), children=[ Comment(''),],)]) ) ### X3D model conversion complete ### #################################################################################################### # Self-test diagnostics #################################################################################################### print('Self-test diagnostics for Tetrahedron.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 Tetrahedron.py load and self-test diagnostics complete.")