{ "X3D": { "encoding":"UTF-8", "@profile":"Immersive", "@version":"3.3", "@xsd:noNamespaceSchemaLocation":"https://www.web3d.org/specifications/x3d-3.3.xsd", "JSON schema":"https://www.web3d.org/specifications/x3d-4.0-JSONSchema.autogenerated.json", "head": { "meta": [ { "@name":"title", "@content":"ExtrusionCrossSectionITSSPrototype.x3d" }, { "@name":"creator", "@content":"Don Brutzman" }, { "@name":"creator", "@content":"Sungmin Kwon" }, { "@name":"created", "@content":"23 October 2017" }, { "@name":"modified", "@content":"14 July 2025" }, { "@name":"description", "@content":"Shape prototype for Enclosing IndexedTriangleStripSet that also draws spine line plus oriented, scaled cross sections at each spine point." }, { "@name":"hint", "@content":"Utilize ExtrusionCrossSectionITSS ProtoInstance as if it is a Shape node (with containerField=\"children\") rather than an Extrusion node (with containerField=\"geometry\") under a Shape." }, { "@name":"TODO", "@content":"Multiple Extrusion property fields not yet supported." }, { "@name":"reference", "@content":"https://en.wikipedia.org/wiki/Extrusion" }, { "@name":"reference", "@content":"VRML 97 Specification, 6.18 Extrusion" }, { "@name":"reference", "@content":"https://www.web3d.org/technicalinfo/specifications/vrml97/part1/nodesRef.html#Extrusion" }, { "@name":"Image", "@content":"VRML 97 Specification, Figure 6.6" }, { "@name":"Image", "@content":"https://www.web3d.org/technicalinfo/specifications/vrml97/Images/Extrusion.gif" }, { "@name":"reference", "@content":"http://realism.com/x3d/examples/Extrusion/_frame.html" }, { "@name":"reference", "@content":"http://www.cs.brown.edu/~gss/vrml/drawpoly.html" }, { "@name":"reference", "@content":"ExtrusionXj3dGoldberg1999.java" }, { "@name":"reference", "@content":"http://web3d.metrolink.com/cgi-bin/cvsweb.cgi/x3d/src/com/sun/j3d/loaders/vrml97/impl/Attic/Extrusion.java" }, { "@name":"identifier", "@content":"https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter06GeometryPointsLinesPolygons/ExtrusionCrossSectionITSSPrototype.x3d" }, { "@name":"generator", "@content":"X3D-Edit 4.0, https://www.web3d.org/x3d/tools/X3D-Edit" }, { "@name":"license", "@content":"../license.html" }, { "@name":"translated", "@content":"24 January 2026" }, { "@name":"generator", "@content":"X3dToJson.xslt, https://www.web3d.org/x3d/stylesheets/X3dToJson.html" }, { "@name":"reference", "@content":"X3D JSON encoding: https://www.web3d.org/wiki/index.php/X3D_JSON_Encoding" } ] }, "Scene": { "-children":[ { "WorldInfo": { "@title":"ExtrusionCrossSectionITSSPrototype.x3d" } }, { "ProtoDeclare": { "@name":"ExtrusionCrossSectionITSS", "@appinfo":"Shape prototype for Extrusion node that also draws spine line plus oriented scaled cross sections at each spine point", "@documentation":"https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter06GeometryPointsLinesPolygons/ExtrusionCrossSectionPrototype.x3d", "ProtoInterface": { "field": [ { "@name":"name", "@accessType":"initializeOnly", "@appinfo":"Extrusion name", "@type":"SFString" }, { "@name":"crossSection", "@accessType":"initializeOnly", "@appinfo":"Extrusion field", "@type":"MFVec2f", "@value":[1,1,1,-1,-1,-1,-1,1,1,1] }, { "@name":"spine", "@accessType":"initializeOnly", "@appinfo":"Extrusion field", "@type":"MFVec3f", "@value":[0,0,0,0,1,0] }, { "@name":"scale", "@accessType":"initializeOnly", "@appinfo":"Extrusion field", "@type":"MFVec2f", "@value":[1,1] }, { "@name":"orientation", "@accessType":"initializeOnly", "@appinfo":"Extrusion field", "@type":"MFRotation", "@value":[0,0,1,0] }, { "@name":"beginCap", "@accessType":"initializeOnly", "@appinfo":"Extrusion field", "@type":"SFBool", "@value":false }, { "@name":"endCap", "@accessType":"initializeOnly", "@appinfo":"Extrusion field", "@type":"SFBool", "@value":false }, { "@name":"ccw", "@accessType":"initializeOnly", "@appinfo":"Extrusion field", "@type":"SFBool", "@value":true }, { "@name":"convex", "@accessType":"initializeOnly", "@appinfo":"Extrusion field", "@type":"SFBool", "@value":true }, { "@name":"creaseAngle", "@accessType":"initializeOnly", "@appinfo":"Extrusion field", "@type":"SFFloat", "@value":0 }, { "@name":"solid", "@accessType":"initializeOnly", "@appinfo":"Extrusion field", "@type":"SFBool", "@value":true }, { "@name":"spineColor", "@accessType":"inputOutput", "@appinfo":"emissiveColor of spine", "@type":"SFColor", "@value":[0,0.9,0.8] }, { "@name":"crossSectionColor", "@accessType":"inputOutput", "@appinfo":"diffuseColor of crossSection", "@type":"SFColor", "@value":[0.2,0.8,0.3] }, { "@name":"crossSectionTransparency", "@accessType":"inputOutput", "@appinfo":"transparency of crossSection", "@type":"SFFloat", "@value":0.2 }, { "@name":"extrusionColor", "@accessType":"inputOutput", "@appinfo":"diffuseColor of extrusion hull", "@type":"SFColor", "@value":[0.3,0.3,0.3] }, { "@name":"extrusionTransparency", "@accessType":"inputOutput", "@appinfo":"transparency of extrusion hull", "@type":"SFFloat", "@value":0.7 }, { "@name":"extrusionImageTexture", "@accessType":"initializeOnly", "@appinfo":"Image to apply to Extrusion", "@type":"SFNode", "-children":[ { "#comment":"initialization node (if any) goes here" } ] }, { "@name":"extrusionTextureTransform", "@accessType":"initializeOnly", "@appinfo":"TextureTransform coordinates of image applied to Extrusion", "@type":"SFNode", "-children":[ { "#comment":"initialization node (if any) goes here" } ] }, { "@name":"set_crossSection", "@accessType":"inputOnly", "@appinfo":"Extrusion field", "@type":"MFVec2f" }, { "@name":"set_spine", "@accessType":"inputOnly", "@appinfo":"Extrusion field", "@type":"MFVec3f" }, { "@name":"set_scale", "@accessType":"inputOnly", "@appinfo":"Extrusion field", "@type":"MFVec2f" }, { "@name":"set_orientation", "@accessType":"inputOnly", "@appinfo":"Extrusion field", "@type":"MFRotation" }, { "@name":"traceEnabled", "@accessType":"initializeOnly", "@appinfo":"Whether to provide initialization trace statements showing node construction", "@type":"SFBool", "@value":false } ] }, "ProtoBody": { "-children":[ { "Group": { "-children":[ { "Shape": { "@DEF":"Spine", "-geometry": { "IndexedLineSet": { "@DEF":"SpineLine", "@colorPerVertex":false, "-coord": { "Coordinate": { "@DEF":"SpineCoordinates", "IS": { "connect": [ { "@nodeField":"point", "@protoField":"spine" }, { "@nodeField":"set_point", "@protoField":"set_spine" } ] } } } } }, "-appearance": { "Appearance": { "-material": { "Material": { "@DEF":"SpineMaterial", "IS": { "connect": [ { "@nodeField":"emissiveColor", "@protoField":"spineColor" } ] } } } } } } }, { "Shape": { "@DEF":"InternalCrossSections", "-geometry": { "IndexedTriangleFanSet": { "@DEF":"CrossSectionFaces", "@solid":false, "-coord": { "Coordinate": { "@DEF":"CrossSectionFacesCoordinates" } } } }, "-appearance": { "Appearance": { "-material": { "Material": { "@DEF":"CrossSectionMaterial", "IS": { "connect": [ { "@nodeField":"diffuseColor", "@protoField":"crossSectionColor" }, { "@nodeField":"transparency", "@protoField":"crossSectionTransparency" } ] } } } } } } }, { "Shape": { "@DEF":"ExternalExtrusion2", "-appearance": { "Appearance": { "@DEF":"ExtrusionAppearance2", "IS": { "connect": [ { "@nodeField":"texture", "@protoField":"extrusionImageTexture" }, { "@nodeField":"textureTransform", "@protoField":"extrusionTextureTransform" } ] }, "-material": { "Material": { "@DEF":"ExtrusionMaterial2", "IS": { "connect": [ { "@nodeField":"diffuseColor", "@protoField":"extrusionColor" }, { "@nodeField":"transparency", "@protoField":"extrusionTransparency" } ] } } } } }, "-geometry": { "IndexedTriangleStripSet": { "@DEF":"EnclosingExtrusion2", "@index":[0,1,2], "-coord": { "Coordinate": { "@DEF":"ExtrusionCoordinates2" } } } } } }, { "#comment":" " } ] } }, { "#comment":"TODO hardwired local Script path to workaround BS Contact bug" }, { "Script": { "@DEF":"CrossSectionScript", "@url":["ExtrusionCrossSectionITSSPrototype.js","https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter06GeometryPointsLinesPolygons/ExtrusionCrossSectionITSSPrototype.js"], "field": [ { "@name":"name", "@accessType":"initializeOnly", "@type":"SFString" }, { "@name":"crossSection", "@accessType":"initializeOnly", "@type":"MFVec2f" }, { "@name":"spine", "@accessType":"initializeOnly", "@type":"MFVec3f" }, { "@name":"scale", "@accessType":"initializeOnly", "@type":"MFVec2f" }, { "@name":"orientation", "@accessType":"initializeOnly", "@type":"MFRotation" }, { "@name":"spineColor", "@accessType":"inputOutput", "@type":"SFColor" }, { "@name":"crossSectionColor", "@accessType":"inputOutput", "@type":"SFColor" }, { "@name":"crossSectionTransparency", "@accessType":"inputOutput", "@type":"SFFloat" }, { "@name":"extrusionColor", "@accessType":"inputOutput", "@type":"SFColor" }, { "@name":"extrusionTransparency", "@accessType":"inputOutput", "@type":"SFFloat" }, { "@name":"set_crossSection", "@accessType":"inputOnly", "@type":"MFVec2f" }, { "@name":"set_spine", "@accessType":"inputOnly", "@type":"MFVec3f" }, { "@name":"set_scale", "@accessType":"inputOnly", "@type":"MFVec2f" }, { "@name":"set_orientation", "@accessType":"inputOnly", "@type":"MFRotation" }, { "@name":"spineIndex", "@accessType":"outputOnly", "@type":"MFInt32" }, { "@name":"facesIndex", "@accessType":"outputOnly", "@type":"MFInt32" }, { "@name":"facePoints", "@accessType":"outputOnly", "@type":"MFVec3f" }, { "@name":"triStripIndex", "@accessType":"outputOnly", "@type":"MFInt32" }, { "@name":"traceEnabled", "@accessType":"initializeOnly", "@type":"SFBool" }, { "@name":"computedFacesIndex", "@accessType":"initializeOnly", "@type":"MFInt32" }, { "@name":"computedFacePoints", "@accessType":"initializeOnly", "@type":"MFVec3f" }, { "@name":"computedTriStripIndex", "@accessType":"initializeOnly", "@type":"MFInt32" } ], "-children":[ { "#comment":"local variables" } ], "IS": { "connect": [ { "@nodeField":"name", "@protoField":"name" }, { "@nodeField":"crossSection", "@protoField":"crossSection" }, { "@nodeField":"spine", "@protoField":"spine" }, { "@nodeField":"scale", "@protoField":"scale" }, { "@nodeField":"spineColor", "@protoField":"spineColor" }, { "@nodeField":"crossSectionColor", "@protoField":"crossSectionColor" }, { "@nodeField":"crossSectionTransparency", "@protoField":"crossSectionTransparency" }, { "@nodeField":"extrusionColor", "@protoField":"extrusionColor" }, { "@nodeField":"extrusionTransparency", "@protoField":"extrusionTransparency" }, { "@nodeField":"orientation", "@protoField":"orientation" }, { "@nodeField":"set_crossSection", "@protoField":"set_crossSection" }, { "@nodeField":"set_spine", "@protoField":"set_spine" }, { "@nodeField":"set_scale", "@protoField":"set_scale" }, { "@nodeField":"set_orientation", "@protoField":"set_orientation" }, { "@nodeField":"traceEnabled", "@protoField":"traceEnabled" } ] } } }, { "ROUTE": { "@fromField":"spineIndex", "@fromNode":"CrossSectionScript", "@toField":"set_coordIndex", "@toNode":"SpineLine" } }, { "ROUTE": { "@fromField":"facesIndex", "@fromNode":"CrossSectionScript", "@toField":"set_index", "@toNode":"CrossSectionFaces" } }, { "ROUTE": { "@fromField":"facePoints", "@fromNode":"CrossSectionScript", "@toField":"point", "@toNode":"CrossSectionFacesCoordinates" } }, { "ROUTE": { "@fromField":"triStripIndex", "@fromNode":"CrossSectionScript", "@toField":"set_index", "@toNode":"EnclosingExtrusion2" } }, { "Group": { "-children":[ { "#comment":"======= ROUTE Trace ==============================================" }, { "Script": { "@DEF":"Trace_ROUTE_CrossSectionScript_triStripIndex_TO_EnclosingExtrusion2_set_index", "@mustEvaluate":true, "-children":[ { "#comment":"Trace ROUTEd event values on X3D browser console" } ], "field": [ { "@name":"reportInterval", "@accessType":"initializeOnly", "@appinfo":"Sampling frequency in seconds (0 means all values)", "@type":"SFTime", "@value":1.0 }, { "@name":"traceValue", "@accessType":"inputOnly", "@type":"MFInt32" }, { "@name":"timeStampPreviousReport", "@accessType":"initializeOnly", "@type":"SFTime", "@value":-1 } ], "#sourceCode":[ "", "", "ecmascript:", " function traceValue (eventValue, timeStamp) {", " // input eventValue received for trace field", " if (timeStamp - timeStampPreviousReport >= reportInterval) {", " Browser.println ('Trace_ROUTE_CrossSectionScript_triStripIndex_TO_EnclosingExtrusion2_set_index type=MFInt32 value=' + eventValue.toString());", " timeStampPreviousReport = timeStamp;", " }", " }", " function timeOfDay (someTime) {", " hh = Math.floor (someTime /(60*60)) % 24;", " mm = Math.floor (someTime / 60) % 60;", " ss = Math.floor (someTime) % 60;", " if (hh < 9) hour = '0' + hh;", " else hour = hh;", " if (mm < 9) minute = '0' + mm;", " else minute = mm;", " if (ss < 9) second = '0' + ss;", " else second = ss;", " return '(' + hour + ':' + minute + ':' + second + ' GMT)';", " }", "", "" ] } }, { "ROUTE": { "@fromField":"triStripIndex", "@fromNode":"CrossSectionScript", "@toField":"traceValue", "@toNode":"Trace_ROUTE_CrossSectionScript_triStripIndex_TO_EnclosingExtrusion2_set_index" } }, { "#comment":"======= ROUTE Trace block complete =====================================================" } ] } }, { "ROUTE": { "@fromField":"facePoints", "@fromNode":"CrossSectionScript", "@toField":"point", "@toNode":"ExtrusionCoordinates2" } }, { "#comment":"" } ] } } }, { "#comment":"====================" }, { "#comment":"Example instance adapted from Figure15.12Torus.x3d" }, { "#comment":"https://www.web3d.org/x3d/content/examples/Basic/Vrml2Sourcebook/Chapter15-Extrusion/Figure15.12Torus.x3d" }, { "#comment":"Redirection text in case a user examines this PROTO file via a 3D browser:" }, { "Group": { "-children":[ { "Transform": { "@translation":[0,0.5,0], "-children":[ { "Shape": { "-appearance": { "Appearance": { "-material": { "Material": { "@diffuseColor":[0,1,1], "@emissiveColor":[0,1,1] } } } }, "-geometry": { "Text": { "@string":["ExtrusionCrossSectionITSS","is a Prototype definition scene"], "-fontStyle": { "FontStyle": { "@justify":["MIDDLE","MIDDLE"], "@size":0.7 } } } } } } ] } } ] } } ] } } }