{ "X3D": { "encoding":"UTF-8", "@profile":"Immersive", "@version":"3.0", "@xsd:noNamespaceSchemaLocation":"https://www.web3d.org/specifications/x3d-3.0.xsd", "JSON schema":"https://www.web3d.org/specifications/x3d-4.0-JSONSchema.autogenerated.json", "head": { "meta": [ { "@name":"title", "@content":"ExplodingBuildingPrototype.x3d" }, { "@name":"description", "@content":"A simple prototype for exploding structure components, experimenting with the \"Hello World\" of explosions. This prototype demonstrates a simplified and scalable approach for modeling explosions. Each chunk of geometry inside an Exploder prototype is given initial/final position/orientation. Intermediate heights for each polygon are at the same height as the distance traveled over ground." }, { "@name":"creator", "@content":"Don Brutzman" }, { "@name":"created", "@content":"1 January 2001" }, { "@name":"modified", "@content":"28 November 2019" }, { "@name":"reference", "@content":"Exploding building schematic layout diagram:" }, { "@name":"Image", "@content":"ExplodingBuildingLayout.pdf" }, { "@name":"Image", "@content":"ExplodingBuildingSnapshots.pdf" }, { "@name":"Image", "@content":"ExplodingBuildingMontage.png" }, { "@name":"MovingImage", "@content":"ExplodingBuildingExampleVideo.mov" }, { "@name":"reference", "@content":"ExplodingBuildingLargeExample.wrl" }, { "@name":"reference", "@content":"Rotation calculations performed using the Dizzy utility from Vapour Technologies by James Smith." }, { "@name":"reference", "@content":"http://www.vapourtech.com" }, { "@name":"reference", "@content":"DIS-Java-VRML Working Group" }, { "@name":"reference", "@content":"https://www.web3d.org/WorkingGroups/vrtp/dis-java-vrml" }, { "@name":"identifier", "@content":"https://www.web3d.org/x3d/content/examples/Savage/Tools/Explosions/ExplodingBuildingPrototype.x3d" }, { "@name":"generator", "@content":"X3D-Edit 3.2, https://www.web3d.org/x3d/tools/X3D-Edit" }, { "@name":"license", "@content":"../../license.html" }, { "@name":"translated", "@content":"26 March 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":"ExplodingBuildingPrototype.x3d" } }, { "ProtoDeclare": { "@name":"Exploder", "@appinfo":"Explode contained geometry through animation on demand", "ProtoInterface": { "field": [ { "@name":"geometry", "@accessType":"initializeOnly", "@appinfo":"geometry node, to be used inside a Shape", "@type":"SFNode", "-children":[ { "#comment":"initialization node (if any) goes here" } ] }, { "@name":"material", "@accessType":"initializeOnly", "@appinfo":"Material node for this geometry, to be used inside a Shape", "@type":"SFNode", "-children":[ { "#comment":"initialization node (if any) goes here" } ] }, { "@name":"initialPosition", "@accessType":"initializeOnly", "@appinfo":"starting point", "@type":"SFVec3f", "@value":[0,0,0] }, { "@name":"finalPosition", "@accessType":"initializeOnly", "@appinfo":"finish point", "@type":"SFVec3f", "@value":[0,0,0] }, { "@name":"initialOrientation", "@accessType":"initializeOnly", "@appinfo":"starting point orientation", "@type":"SFRotation", "@value":[0,1,0,0] }, { "@name":"finalOrientation", "@accessType":"initializeOnly", "@appinfo":"finish point orientation", "@type":"SFRotation", "@value":[0,1,0,0] }, { "@name":"set_fraction", "@accessType":"inputOnly", "@appinfo":"animation input", "@type":"SFFloat" } ] }, "ProtoBody": { "-children":[ { "Transform": { "@DEF":"LocationTransform", "IS": { "connect": [ { "@nodeField":"translation", "@protoField":"initialPosition" } ] }, "-children":[ { "Transform": { "@DEF":"RotationTransform", "IS": { "connect": [ { "@nodeField":"rotation", "@protoField":"initialOrientation" } ] }, "-children":[ { "Shape": { "@DEF":"AnimatedShape", "IS": { "connect": [ { "@nodeField":"geometry", "@protoField":"geometry" } ] }, "-appearance": { "Appearance": { "@DEF":"AnimatedShapeAppearance", "IS": { "connect": [ { "@nodeField":"material", "@protoField":"material" } ] } } } } } ] } } ] } }, { "#comment":"only initial node in ProtoBody is rendered" }, { "Script": { "@DEF":"ProtoAnimationScript", "field": [ { "@name":"initialPosition", "@accessType":"initializeOnly", "@type":"SFVec3f" }, { "@name":"finalPosition", "@accessType":"initializeOnly", "@type":"SFVec3f" }, { "@name":"initialOrientation", "@accessType":"initializeOnly", "@type":"SFRotation" }, { "@name":"finalOrientation", "@accessType":"initializeOnly", "@type":"SFRotation" }, { "@name":"position_changeds", "@accessType":"outputOnly", "@type":"MFVec3f" }, { "@name":"rotationValues", "@accessType":"outputOnly", "@type":"MFRotation" } ], "IS": { "connect": [ { "@nodeField":"initialPosition", "@protoField":"initialPosition" }, { "@nodeField":"finalPosition", "@protoField":"finalPosition" }, { "@nodeField":"initialOrientation", "@protoField":"initialOrientation" }, { "@nodeField":"finalOrientation", "@protoField":"finalOrientation" } ] }, "#sourceCode":[ "", "", "ecmascript:", "", "function initialize ()", "{", "\tdx = finalPosition.x - initialPosition.x;", "\tdy = finalPosition.y - initialPosition.y;", "\tdz = finalPosition.z - initialPosition.z;", "//\tBrowser.println ('dx=' + dx + ', dy=' + dy + ', dz=' + dz);", "\tdistance = Math.sqrt (dx*dx + dy*dy + dz*dz);", "//\tBrowser.println ('distance =' + distance);", "\tquarterPoint = initialPosition.add (new SFVec3f ( dx/4, dy/4 + 0.707*distance, dz/4));", "\thalfwaypoint = initialPosition.add (new SFVec3f ( dx/2, dy/2 + distance, dz/2));", "\tthree4thsPoint = initialPosition.add (new SFVec3f (3*dx/4, 3*dy/4 + 0.707*distance/2, 3*dz/4));", "\tposition_changeds = new MFVec3f (initialPosition, initialPosition, quarterPoint, halfwaypoint, three4thsPoint, finalPosition);", "//\tBrowser.println ('position_changeds =' + position_changeds);", "\trotationValues = new MFRotation (initialOrientation, finalOrientation);", "", "//\tBrowser.println ('initialPosition =' + initialPosition);", "//\tBrowser.println ('finalPosition =' + finalPosition);", "//\tBrowser.println ('position_changeds =' + position_changeds);", "//\tBrowser.println ('initialOrientation=' + initialOrientation);", "//\tBrowser.println ('finalOrientation =' + finalOrientation);", "//\tBrowser.println ('rotationValues=' + rotationValues);", "}", "", "" ] } }, { "#comment":"keyValue arrays for following interpolators get recalculated and reset by ProtoAnimationScript" }, { "PositionInterpolator": { "@DEF":"ProtoPositionInterpolator", "@key":[0,0.2,0.4,0.6,0.8,1], "@keyValue":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], "IS": { "connect": [ { "@nodeField":"set_fraction", "@protoField":"set_fraction" } ] } } }, { "OrientationInterpolator": { "@DEF":"ProtoOrientationInterpolator", "@key":[0,1], "@keyValue":[0,1,0,0,0,1,0,0], "IS": { "connect": [ { "@nodeField":"set_fraction", "@protoField":"set_fraction" } ] } } }, { "ROUTE": { "@fromField":"value_changed", "@fromNode":"ProtoPositionInterpolator", "@toField":"translation", "@toNode":"LocationTransform" } }, { "ROUTE": { "@fromField":"value_changed", "@fromNode":"ProtoOrientationInterpolator", "@toField":"rotation", "@toNode":"RotationTransform" } }, { "ROUTE": { "@fromField":"position_changeds", "@fromNode":"ProtoAnimationScript", "@toField":"keyValue", "@toNode":"ProtoPositionInterpolator" } }, { "ROUTE": { "@fromField":"rotationValues", "@fromNode":"ProtoAnimationScript", "@toField":"keyValue", "@toNode":"ProtoOrientationInterpolator" } } ] } } }, { "#comment":"============================" }, { "Viewpoint": { "@description":"ExplodingBuilding Prototype", "@position":[0,0,12] } }, { "Background": { "@groundAngle":[1.57], "@groundColor":[0.6,0.9,0.6,0.6,0.9,0.6], "@skyColor":[0.6,0.6,0.9] } }, { "Anchor": { "@description":"ExplodingBuilding Example", "@parameter":["target=_blank"], "@url":["ExplodingBuildingExample.x3d","https://www.web3d.org/x3d/content/examples/Savage/Tools/Explosions/ExplodingBuildingExample.x3d","ExplodingBuildingExample.wrl","https://www.web3d.org/x3d/content/examples/Savage/Tools/Explosions/ExplodingBuildingExample.wrl"], "-children":[ { "Shape": { "-geometry": { "Text": { "@string":["ExplodingBuildingPrototype","is a prototype definition file","Click this text to see","ExplodingBuildingExample"], "-fontStyle": { "FontStyle": { "@justify":["MIDDLE","MIDDLE"] } } } }, "-appearance": { "Appearance": { "-material": { "Material": { "@diffuseColor":[0.2,0.2,0.8] } } } } } } ] } } ] } } }