{ "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":"EventUtilityPrototypes.x3d" }, { "@name":"description", "@content":"Event utility node prototypes for boolean filtering and other event utility nodes." }, { "@name":"creator", "@content":"Nick Polys, Tony Parisi, Don Brutzman, Justin Couch" }, { "@name":"created", "@content":"25 September 2002" }, { "@name":"modified", "@content":"20 January 2020" }, { "@name":"warning", "@content":"Under development, IntegerTrigger example needed." }, { "@name":"reference", "@content":"EventUtilityExamples.x3d" }, { "@name":"subject", "@content":"BooleanFilter BooleanToggle BooleanTrigger IntegerTrigger TimeTrigger" }, { "@name":"identifier", "@content":"https://www.web3d.org/x3d/content/examples/Basic/development/EventUtilityPrototypes.x3d" }, { "@name":"generator", "@content":"X3D-Edit 3.3, https://www.web3d.org/x3d/tools/X3D-Edit" }, { "@name":"license", "@content":"../license.html" }, { "@name":"translated", "@content":"20 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":"EventUtilityPrototypes.x3d" } }, { "ProtoDeclare": { "@name":"BooleanFilter", "@appinfo":"BooleanFilter selectively passes true false or negated events.", "ProtoInterface": { "field": [ { "@name":"set_boolean", "@accessType":"inputOnly", "@appinfo":"set_boolean is the input value to be filtered.", "@type":"SFBool" }, { "@name":"inputTrue", "@accessType":"outputOnly", "@appinfo":"inputTrue only passes a true value when set_boolean input is true.", "@type":"SFBool" }, { "@name":"inputFalse", "@accessType":"outputOnly", "@appinfo":"inputFalse only passes a false value when set_boolean is false.", "@type":"SFBool" }, { "@name":"inputNegate", "@accessType":"outputOnly", "@appinfo":"inputNegate provides opposite value by negating set_boolean input.", "@type":"SFBool" } ] }, "ProtoBody": { "-children":[ { "Script": { "@DEF":"BooleanFilterScript", "field": [ { "@name":"set_boolean", "@accessType":"inputOnly", "@type":"SFBool" }, { "@name":"inputTrue", "@accessType":"outputOnly", "@type":"SFBool" }, { "@name":"inputFalse", "@accessType":"outputOnly", "@type":"SFBool" }, { "@name":"inputNegate", "@accessType":"outputOnly", "@type":"SFBool" } ], "IS": { "connect": [ { "@nodeField":"set_boolean", "@protoField":"set_boolean" }, { "@nodeField":"inputTrue", "@protoField":"inputTrue" }, { "@nodeField":"inputFalse", "@protoField":"inputFalse" }, { "@nodeField":"inputNegate", "@protoField":"inputNegate" } ] }, "#sourceCode":[ "", "", "ecmascript:", "", "function set_boolean (value, timestamp)", "{", "\tif (value) inputTrue = value;", "\telse inputFalse = value;", "\tinputNegate = !value;", "", "//\tif (value) Browser.println ('[BooleanFilter] set_boolean=' + value + ', inputTrue=' + inputTrue + ', inputNegate=' + inputNegate);", "//\telse Browser.println ('[BooleanFilter] set_boolean=' + value + ', inputFalse=' + inputFalse + ', inputNegate=' + inputNegate);", "}", "", "" ] } } ] } } }, { "#comment":"========================================" }, { "ProtoDeclare": { "@name":"BooleanToggle", "@appinfo":"BooleanToggle maintains state and negates output when a true input is provided.", "ProtoInterface": { "field": [ { "@name":"set_boolean", "@accessType":"inputOnly", "@appinfo":"If set_boolean input is true toggle state.", "@type":"SFBool" }, { "@name":"set_toggle", "@accessType":"inputOnly", "@appinfo":"Reset persistent state value.", "@type":"SFBool" }, { "@name":"toggle", "@accessType":"initializeOnly", "@appinfo":"Persistent state value that gets toggled or reset.", "@type":"SFBool", "@value":false }, { "@name":"toggle_changed", "@accessType":"outputOnly", "@appinfo":"Output toggled persistent state value.", "@type":"SFBool" } ], "-children":[ { "#comment":"warning: toggle depends on exposedField functionality in Script node, not compatible with VRML 97. implemented as inputOnly/initializeOnly/outputOnly triplet." } ] }, "ProtoBody": { "-children":[ { "Group": { "-children":[ { "Script": { "@DEF":"BooleanToggleScript", "field": [ { "@name":"set_boolean", "@accessType":"inputOnly", "@type":"SFBool" }, { "@name":"set_toggle", "@accessType":"inputOnly", "@type":"SFBool" }, { "@name":"toggle", "@accessType":"initializeOnly", "@type":"SFBool", "@value":false }, { "@name":"toggle_changed", "@accessType":"outputOnly", "@type":"SFBool" }, { "@name":"traceEnabled", "@accessType":"initializeOnly", "@type":"SFBool", "@value":false } ], "IS": { "connect": [ { "@nodeField":"set_boolean", "@protoField":"set_boolean" }, { "@nodeField":"set_toggle", "@protoField":"set_toggle" }, { "@nodeField":"toggle_changed", "@protoField":"toggle_changed" } ] }, "#sourceCode":[ "", "", "ecmascript:", "", "function initialize ()", "{", "\tif (traceEnabled) Browser.println ('[BooleanToggle] toggle=' + toggle);", "", "}", "function set_boolean (value, timestamp)", "{", "\tif (value == true) // only toggle on true input", "\t{", "\t\tif (toggle == true) toggle = false;", "\t\telse toggle = true;", "\t}", "\ttoggle_changed = toggle;", "//\tBrowser.println ('[BooleanToggle] traceEnabled=' + traceEnabled);", "\tif (traceEnabled) Browser.println ('[BooleanToggle] set_boolean=' + value + ', toggle=' + toggle);", "}", "function set_toggle (value, timestamp)", "{", "\ttoggle = value;", "\ttoggle_changed = toggle;", "\tif (traceEnabled) Browser.println ('[BooleanToggle] set_toggle=' + set_toggle);", "}", "", "" ] } } ] } } ] } } }, { "#comment":"========================================" }, { "ProtoDeclare": { "@name":"BooleanTrigger", "@appinfo":"BooleanTrigger converts time events to boolean true events.", "ProtoInterface": { "field": [ { "@name":"set_triggerTime", "@accessType":"inputOnly", "@appinfo":"set_triggerTime provides input time event typical event sent is TouchSensor touchTime.", "@type":"SFTime" }, { "@name":"triggerTrue", "@accessType":"outputOnly", "@appinfo":"triggerTrue outputs a true value whenever a triggerTime event is received.", "@type":"SFBool" } ] }, "ProtoBody": { "-children":[ { "Script": { "@DEF":"TriggerBooleanScript", "field": [ { "@name":"set_triggerTime", "@accessType":"inputOnly", "@type":"SFTime" }, { "@name":"triggerTrue", "@accessType":"outputOnly", "@type":"SFBool" } ], "IS": { "connect": [ { "@nodeField":"set_triggerTime", "@protoField":"set_triggerTime" }, { "@nodeField":"triggerTrue", "@protoField":"triggerTrue" } ] }, "#sourceCode":[ "", "", "ecmascript:", "", "function set_triggerTime (value, timestamp)", "{", "\ttriggerTrue = true;", "//\tBrowser.println ('triggerTrue = true');", "}", "", "" ] } } ] } } }, { "#comment":"========================================" }, { "ProtoDeclare": { "@name":"IntegerTrigger", "@appinfo":"IntegerTrigger converts boolean true or time input events to integer value (suitable for Switch node).", "ProtoInterface": { "field": [ { "@name":"set_boolean", "@accessType":"inputOnly", "@appinfo":"If set_boolean input is true trigger output of integer value.", "@type":"SFBool" }, { "@name":"set_integerKey", "@accessType":"inputOnly", "@appinfo":"Resets value used for output when triggered later.", "@type":"SFInt32" }, { "@name":"integerKey", "@accessType":"inputOutput", "@appinfo":"integerKey is value for output when triggered.", "@type":"SFInt32", "@value":-1 }, { "@name":"integerKey_changed", "@accessType":"outputOnly", "@appinfo":"Reports change in integerKey value.", "@type":"SFInt32" }, { "@name":"triggerValue", "@accessType":"outputOnly", "@appinfo":"triggerValue provides integer event output matching integerKey when true set_boolean received.", "@type":"SFInt32" } ] }, "ProtoBody": { "-children":[ { "Group": { "-children":[ { "Switch": { "@DEF":"IntegerKeyHolder", "@whichChoice":-1, "IS": { "connect": [ { "@nodeField":"whichChoice", "@protoField":"integerKey" } ] } } }, { "Script": { "@DEF":"TriggerIntegerScript", "@directOutput":true, "field": [ { "@name":"set_boolean", "@accessType":"inputOnly", "@type":"SFBool" }, { "@name":"set_integerKey", "@accessType":"inputOnly", "@type":"SFInt32" }, { "@name":"integerKeyHolderNode", "@accessType":"initializeOnly", "@type":"SFNode", "-children":[ { "Switch": { "@USE":"IntegerKeyHolder" } } ] }, { "@name":"integerKey_changed", "@accessType":"outputOnly", "@type":"SFInt32" }, { "@name":"triggerValue", "@accessType":"outputOnly", "@type":"SFInt32" } ], "IS": { "connect": [ { "@nodeField":"set_boolean", "@protoField":"set_boolean" }, { "@nodeField":"set_integerKey", "@protoField":"set_integerKey" }, { "@nodeField":"integerKey_changed", "@protoField":"integerKey_changed" }, { "@nodeField":"triggerValue", "@protoField":"triggerValue" } ] }, "#sourceCode":[ "", "", "ecmascript:", "", "function set_boolean (inputValue, timestamp)", "{", "\tif (inputValue == true)", "\t{", "\t\tintegerKey = integerKeyHolderNode.whichChoice;", "\t\ttriggerValue = integerKey; // send output event", "\t}", "}", "function set_integerKey (inputValue, timestamp)", "{", "\tintegerKey = inputValue;", "\tintegerKeyHolderNode.whichChoice = integerKey;", "\tintegerKey_changed = integerKey; // send output event", "}", "", "" ] } } ] } } ] } } }, { "#comment":"========================================" }, { "ProtoDeclare": { "@name":"TimeTrigger", "@appinfo":"TimeTrigger converts boolean true events to time events.", "ProtoInterface": { "field": [ { "@name":"set_boolean", "@accessType":"inputOnly", "@appinfo":"If set_boolean input is true trigger output time value.", "@type":"SFBool" }, { "@name":"triggerTime", "@accessType":"outputOnly", "@appinfo":"triggerTime is output time event sent when set_boolean input is true.", "@type":"SFTime" } ] }, "ProtoBody": { "-children":[ { "Script": { "@DEF":"TriggerTimeScript", "field": [ { "@name":"set_boolean", "@accessType":"inputOnly", "@type":"SFBool" }, { "@name":"triggerTime", "@accessType":"outputOnly", "@type":"SFTime" } ], "IS": { "connect": [ { "@nodeField":"set_boolean", "@protoField":"set_boolean" }, { "@nodeField":"triggerTime", "@protoField":"triggerTime" } ] }, "#sourceCode":[ "", "", "ecmascript:", "", "function set_boolean (value, timestamp)", "{", "\tif (value) triggerTime = timestamp;", "}", "", "" ] } } ] } } }, { "#comment":"========================================" }, { "Anchor": { "@description":"EventUtilityExamples", "@parameter":["target=_blank"], 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