{ "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":"ParallelepipedPrototype.x3d" }, { "@name":"description", "@content":"Reusable prototype for creating a Parallelepiped, which is a 3D figure formed by six parallelograms; also sometimes referred to as a rhomboid." }, { "@name":"creator", "@content":"Don Brutzman" }, { "@name":"created", "@content":"25 November 2011" }, { "@name":"modified", "@content":"7 December 2024" }, { "@name":"reference", "@content":"ParallelepipedExamples.x3d" }, { "@name":"Image", "@content":"ParallelepipedVertexIndices.png" }, { "@name":"drawing", "@content":"GeometricShapes.vsdx" }, { "@name":"reference", "@content":"https://en.wikipedia.org/wiki/Parallelepiped" }, { "@name":"reference", "@content":"http://upload.wikimedia.org/wikipedia/commons/f/f6/Parallelepiped.svg" }, { "@name":"reference", "@content":"http://upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Parallelepiped.svg/500px-Parallelepiped.svg.png" }, { "@name":"subject", "@content":"parallelepiped rhomboid geometry polyhedron" }, { "@name":"identifier", "@content":"https://www.web3d.org/x3d/content/examples/X3dForAdvancedModeling/GeometricShapes/ParallelepipedPrototype.x3d" }, { "@name":"reference", "@content":"https://www.web3d.org/x3d/content/examples/X3dResources.html" }, { "@name":"generator", "@content":"X3D-Edit 3.3, https://www.web3d.org/x3d/tools/X3D-Edit" }, { "@name":"license", "@content":"../license.html" }, { "@name":"translated", "@content":"16 April 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":"ParallelepipedPrototype.x3d" } }, { "ProtoDeclare": { "@name":"Parallelepiped", "@appinfo":"Parallelepiped is a 3D figure formed by six parallelograms; also sometimes referred to as a rhomboid", "ProtoInterface": { "field": [ { "@name":"point", "@accessType":"inputOutput", "@type":"MFVec3f", "@value":[0,1,0,1,1,0,1,1,1,0,1,1,0,0,0,1,0,0,1,0,1,0,0,1] }, { "@name":"colorPerVertex", "@accessType":"initializeOnly", "@type":"SFBool", "@value":true }, { "@name":"normalPerVertex", "@accessType":"initializeOnly", "@type":"SFBool", "@value":true }, { "@name":"colorIndex", "@accessType":"initializeOnly", "@type":"MFInt32" }, { "@name":"normalIndex", "@accessType":"initializeOnly", "@type":"MFInt32" }, { "@name":"texCoordIndex", "@accessType":"initializeOnly", "@type":"MFInt32" }, { "@name":"colorNode", "@accessType":"inputOutput", "@type":"SFNode", "-children":[ { "Color": { "@DEF":"DefaultColor" } } ] }, { "@name":"normalNode", "@accessType":"inputOutput", "@type":"SFNode", "-children":[ { "Normal": { "@DEF":"DefaultNormal" } } ] }, { "@name":"texCoordNode", "@accessType":"inputOutput", "@type":"SFNode", "-children":[ { "TextureCoordinate": { "@DEF":"DefaultTextureCoordinate" } } ] } ] }, "ProtoBody": { "-children":[ { "#comment":"First node determines node type of this prototype" }, { "IndexedFaceSet": { "@DEF":"IFS", "@convex":false, "@coordIndex":[0,3,2,1,-1,4,5,6,7,-1,0,1,5,4,-1,1,2,6,5,-1,2,3,7,6,-1,3,0,4,7,-1], "@solid":false, "IS": { "connect": [ { "@nodeField":"colorPerVertex", "@protoField":"colorPerVertex" }, { "@nodeField":"normalPerVertex", "@protoField":"normalPerVertex" }, { "@nodeField":"colorIndex", "@protoField":"colorIndex" }, { "@nodeField":"normalIndex", "@protoField":"normalIndex" }, { "@nodeField":"texCoordIndex", "@protoField":"texCoordIndex" }, { "@nodeField":"colorNode", "@protoField":"colorNode" }, { "@nodeField":"normalNode", "@protoField":"normalNode" }, { "@nodeField":"texCoordNode", "@protoField":"texCoordNode" } ] }, "-coord": { "Coordinate": { "IS": { "connect": [ { "@nodeField":"point", "@protoField":"point" } ] } } } } }, { "#comment":"This embedded Script provides the X3D author with additional visibility and control over prototype inputs and outputs" }, { "Script": { "@DEF":"ParallelepipedScript", "field": [ { "@name":"point", "@accessType":"inputOutput", "@type":"MFVec3f" } ], "IS": { "connect": [ { "@nodeField":"point", "@protoField":"point" } ] }, "#sourceCode":[ "", "", "ecmascript:", "function initialize ()", "{", " checkCoordinatePoints ();", "}", "function checkCoordinatePoints ()", "{", " // A parallelepiped has three sets of four parallel edges; the edges within each set are of equal length.", " // Quality assurance: check that lengths of corresponding sides match.", "", " edge01 = length2(point[0], point[1]); // top", " edge12 = length2(point[1], point[2]);", " edge23 = length2(point[2], point[3]);", " edge30 = length2(point[3], point[0]);", " edge45 = length2(point[4], point[5]); // bottom", " edge56 = length2(point[5], point[6]);", " edge67 = length2(point[6], point[7]);", " edge74 = length2(point[7], point[4]);", " edge04 = length2(point[0], point[4]); // sides", " edge15 = length2(point[1], point[5]);", " edge26 = length2(point[2], point[6]);", " edge37 = length2(point[3], point[7]);", "", " epsilon = edge01 * 0.001;", "", " if ((Math.abs(edge01 - edge23) > epsilon) ||", " (Math.abs(edge23 - edge67) > epsilon) ||", " (Math.abs(edge67 - edge45) > epsilon) ||", " (Math.abs(edge45 - edge01) > epsilon))", " Browser.println ('Warning, mismatched parallelepiped sides 02/33/45/67');", " else if ((Math.abs(edge30 - edge12) > epsilon) ||", " (Math.abs(edge12 - edge56) > epsilon) ||", " (Math.abs(edge56 - edge74) > epsilon) ||", " (Math.abs(edge74 - edge30) > epsilon))", " Browser.println ('Warning, mismatched parallelepiped sides 30/12/56/74');", " else if ((Math.abs(edge04 - edge15) > epsilon) ||", " (Math.abs(edge15 - edge26) > epsilon) ||", " (Math.abs(edge26 - edge37) > epsilon) ||", " (Math.abs(edge37 - edge04) > epsilon))", " Browser.println ('Warning, mismatched parallelepiped sides 04/15/26/37');", "}", "function length2 (pointA, pointB)", "{ ", " return Math.sqrt((pointA.x - pointB.x)*(pointA.x - pointB.x) +", " (pointA.y - pointB.y)*(pointA.y - pointB.y) +", " (pointA.z - pointB.z)*(pointA.z - pointB.z));", "}", "function set_point (eventValue)", "{", " // input eventValue received for inputOutput field", " point = eventValue;", " checkCoordinatePoints ();", "}", "", "" ] } } ] } } }, { "#comment":"================================================================================" }, { "Background": { "@skyColor":[0.905882,1,0.858824] } }, { "Anchor": { "@description":"Open ParallelepipedExamples scene", "@url":["ParallelepipedExamples.x3d","https://www.web3d.org/x3d/content/examples/X3dForAdvancedModeling/GeometricShapes/ParallelepipedExamples.x3d","ParallelepipedExamples.wrl","https://www.web3d.org/x3d/content/examples/X3dForAdvancedModeling/GeometricShapes/ParallelepipedExamples.wrl"], "-children":[ { "Shape": { "-geometry": { "Text": { "@string":["This scene defines a","Parallelepiped prototype","Select this text to open","ParallelepipedExamples scene"], "-fontStyle": { "FontStyle": { "@justify":["MIDDLE","MIDDLE"] } } } }, "-appearance": { "Appearance": { "@DEF":"BlueAppearance", "-material": { "Material": { "@diffuseColor":[0,0.698039,1] } } } } } }, { "Shape": { "@DEF":"TransparentBox", "-geometry": { "Box": { "@size":[11,5,0.1] } }, "-appearance": { "Appearance": { "-material": { "Material": { "@transparency":1 } } } } } } ] } } ] } } }