#################################################################################################### # # Invoking X3D model self-test: # # $ python BounceTrimesh.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=2,name='RigidBodyPhysics'), meta(content='BounceTrimesh.x3d',name='title'), meta(content='Example scene for RigidBodyPhysics component',name='description'), meta(content='Alan Hudson and Justin Couch',name='creator'), meta(content='Don Brutzman',name='translator'), meta(content='1 January 2008',name='created'), meta(content='26 December 2008',name='translated'), meta(content='20 October 2019',name='modified'), meta(content='http://www.xj3d.org/extensions/index.html#Physics',name='reference'), meta(content='originals/bounce_trimesh.x3dv',name='reference'), meta(content='https://www.web3d.org/x3d/specifications/ISO-IEC-FDIS-19775-1.2-X3D-AbstractSpecification/Part01/components/rigid_physics.html',name='reference'), meta(content='under development',name='warning'), meta(content='https://www.web3d.org/x3d/content/examples/Basic/RigidBodyPhysics/BounceTrimesh.x3d',name='identifier'), meta(content='X3D-Edit 3.3, https://www.web3d.org/x3d/tools/X3D-Edit',name='generator'), meta(content='Xj3D converter, http://www.xj3d.org',name='generator'), meta(content='../license.html',name='license')]), Scene=Scene( children=[ WorldInfo(title='BounceTrimesh.x3d'), Viewpoint(position=(0.0,0.0,4.0)), Group( children=[ CollidableShape(DEF='BALL-GEOM', shape=Shape( appearance=Appearance( material=Material(emissiveColor=(1.0,0.0,0.0))), geometry=Sphere(radius=0.1))), CollidableShape(DEF='GROUND-GEOM',translation=(0.0,-0.5,0.0), shape=Shape( appearance=Appearance( material=Material(emissiveColor=(0.0,1.0,0.0))), geometry=TriangleSet(ccw=True,colorPerVertex=True,normalPerVertex=True,solid=True, coord=Coordinate(point=[(-10.0,0.0,10.0),(10.0,0.0,10.0),(10.0,0.0,-10.0),(-10.0,0.0,10.0),(10.0,0.0,-10.0),(-10.0,0.0,-10.0)]))))]), Transform(translation=(1.0,1.0,0.0), children=[ Shape( appearance=Appearance( material=Material(DEF='INDICATOR-MATERIAL',emissiveColor=(0.0,0.0,1.0))), geometry=Sphere(radius=0.2))]), RigidBodyCollection(DEF='BODY-COLLECTION', bodies=[ RigidBody(DEF='BODY-1',position=(0.0,2.0,0.0), geometry=[ CollidableShape(USE='BALL-GEOM')])]), CollisionSensor(DEF='COLLISION-OUTPUT', collider=CollisionCollection(DEF='COLLISION-GROUP',bounce=1.0,minBounceSpeed=1.0, collidables=[ CollidableShape(USE='BALL-GEOM'), CollidableShape(USE='GROUND-GEOM')])), Script(DEF='CONTACT-SCRIPT',directOutput=True, field=[ field(accessType='inputOnly',name='activeSensor',type='SFBool'), field(accessType='outputOnly',name='indicatorColor',type='SFColor'), field(accessType='inputOnly',name='set_jointContacts',type='MFNode'), field(accessType='outputOnly',name='correctedContacts',type='MFNode'), field(accessType='initializeOnly',name='ground',type='SFNode', children=[ CollidableShape(USE='GROUND-GEOM')])], sourceCode=""" ecmascript: function set_jointContacts(val) { for(i = 0; i < val.length; i++) { if(val[i].geometry1.equals(ground)) { val[i].geometry1 = null; val[i].body1 = null; val[i].bounce = 1; } if(val[i].geometry2.equals(ground)) { val[i].geometry2 = null; val[i].body2 = null; val[i].bounce = 1; } } correctedContacts = val; } function activeSensor(val) { if(val) { indicatorColor.r = 0; indicatorColor.g = 1; indicatorColor.b = 0; } else { indicatorColor.r = 1; indicatorColor.g = 0; indicatorColor.b = 0; } } """), ROUTE(fromField='contacts',fromNode='COLLISION-OUTPUT',toField='set_jointContacts',toNode='CONTACT-SCRIPT'), ROUTE(fromField='isActive',fromNode='COLLISION-OUTPUT',toField='activeSensor',toNode='CONTACT-SCRIPT'), ROUTE(fromField='indicatorColor',fromNode='CONTACT-SCRIPT',toField='emissiveColor',toNode='INDICATOR-MATERIAL'), ROUTE(fromField='correctedContacts',fromNode='CONTACT-SCRIPT',toField='set_contacts',toNode='BODY-COLLECTION')]) ) ### X3D model conversion complete ### #################################################################################################### # Self-test diagnostics #################################################################################################### print('Self-test diagnostics for BounceTrimesh.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 BounceTrimesh.py load and self-test diagnostics complete.")