| 1 |
<?xml version="1.0" encoding="UTF-8"?>
|
| 2 |
<!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 4.0//EN" "https://www.web3d.org/specifications/x3d-4.0.dtd">
|
| 3 | <X3D profile='Immersive' version='4.0' xmlns:xsd='http://www.w3.org/2001/XMLSchema-instance' xsd:noNamespaceSchemaLocation='https://www.web3d.org/specifications/x3d-4.0.xsd'> |
| 4 | <head> |
| 5 | <meta name='title' content=' Chopper.x3d '/> |
| 6 | <meta name='description' content='Rotor node provides animation and serves as an ExternProtoDeclare example'/> |
| 7 | <meta name='creator' content='Don Brutzman and Joe Williams'/> |
| 8 | <meta name='created' content='1 June 2002'/> |
| 9 | <meta name='modified' content='28 September 2025'/> |
| 10 | <meta name='specificationSection' content='X3D encodings, ISO/IEC 19776-1.3, Part 1: XML encoding, Annex C.16 Chopper'/> |
| 11 | <meta name='specificationUrl' content='https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19776-1v4.0-CD/Part01/examples.html#Chopper'/> |
| 12 | <meta name='identifier' content=' https://www.web3d.org/x3d/content/examples/Basic/X3dSpecifications/Chopper.x3d '/> |
| 13 | <meta name='generator' content='X3D-Edit 4.0, https://www.web3d.org/x3d/tools/X3D-Edit'/> |
| 14 | <meta name='license' content='../license.html'/> |
| 15 | </head> |
DEF nodes index:
MikesChopper,
RotorScript,
Top,
Touch
| 16 | <Scene> |
| 17 | <WorldInfo title='Chopper.x3d'/> |
| 18 | <ExternProtoDeclare name='Rotor' url=' "Rotor.x3d#Rotor" "https://www.web3d.org/x3d/content/examples/Basic/X3dSpecifications/Rotor.x3d#Rotor" "Rotor.wrl#Rotor" "https://www.web3d.org/x3d/content/examples/Basic/X3dSpecifications/Rotor.wrl#Rotor" '> |
| 19 | <field name='rate' type='SFTime' accessType='initializeOnly'/> |
| 20 | <field name='children' type='MFNode' accessType='initializeOnly'/> |
| 21 | <field name='startTime' type='SFTime' accessType='inputOutput'/> |
| 22 | <field name='stopTime' type='SFTime' accessType='inputOutput'/> |
| 23 | </ExternProtoDeclare> |
| 24 | <ProtoDeclare name='Chopper'> |
| 25 | <ProtoInterface> |
| 26 | <field name='rotorSpeed' type='SFTime' value='1' accessType='initializeOnly'/> |
| 27 | </ProtoInterface> |
| 28 | <ProtoBody> |
| 29 | <Group> |
| 30 |
<!-- ROUTE information for Touch node:
[from touchTime to RotorScript.startOrStopEngine
]
-->
<TouchSensor DEF='Touch' description='touch to toggle rotor rotation'/> |
| 31 | <Inline url=' "ChopperBody.x3d" "https://www.web3d.org/x3d/content/examples/Basic/X3dSpecifications/ChopperBody.x3d" "ChopperBody.wrl" "https://www.web3d.org/x3d/content/examples/Basic/X3dSpecifications/ChopperBody.wrl" '/> |
| 32 |
<!-- ROUTE information for Top node:
[from RotorScript.startEngine to startTime
]
[from RotorScript.stopEngine to stopTime
]
-->
<ProtoInstance name='Rotor' DEF='Top'> |
| 33 | <fieldValue name='stopTime' value='1'/> |
| 34 | <fieldValue name='children'> |
| 35 | <Inline url=' "ChopperRotor.x3d" "https://www.web3d.org/x3d/content/examples/Basic/X3dSpecifications/ChopperRotor.x3d" "ChopperRotor.wrl" "https://www.web3d.org/x3d/content/examples/Basic/X3dSpecifications/ChopperRotor.wrl" '/> |
| 36 | </fieldValue> |
| 37 | <IS> |
| 38 | <connect nodeField='rate' protoField='rotorSpeed'/> |
| 39 | </IS> |
| 40 | </ProtoInstance> |
| 41 | </Group> |
| 42 | <!-- after first node in ProtoDeclare, remainder of nodes do not render --> |
| 43 |
<!-- ROUTE information for RotorScript node:
[from Touch.touchTime to startOrStopEngine
]
[from startEngine to Top.startTime
]
[from stopEngine to Top.stopTime
]
-->
<Script DEF='RotorScript'> |
| 44 | <field name='startOrStopEngine' type='SFTime' accessType='inputOnly'/> |
| 45 | <field name='startEngine' type='SFTime' accessType='outputOnly'/> |
| 46 | <field name='stopEngine' type='SFTime' accessType='outputOnly'/> |
| 47 | <field name='engineStarted' type='SFBool' value='false' accessType='initializeOnly'/> |
<![CDATA[
ecmascript:
function startOrStopEngine(value)
{
// start or stop engine:
if (!engineStarted)
{
startEngine = value;
engineStarted = true;
}
else
{
stopEngine = value;
engineStarted = false;
}
}
]]>
|
|
| 49 | </Script> |
| 50 | < ROUTE fromNode='Touch' fromField='touchTime' toNode='RotorScript' toField='startOrStopEngine'/> |
| 51 | < ROUTE fromNode='RotorScript' fromField='startEngine' toNode='Top' toField='startTime'/> |
| 52 | < ROUTE fromNode='RotorScript' fromField='stopEngine' toNode='Top' toField='stopTime'/> |
| 53 | </ProtoBody> |
| 54 | </ProtoDeclare> |
| 55 | <Viewpoint description='Example16' position='0 0 5'/> |
| 56 | <Group> |
| 57 | <ProtoInstance name='Chopper' DEF='MikesChopper'/> |
| 58 | </Group> |
| 59 | </Scene> |
| 60 | </X3D> |
DEF nodes index:
MikesChopper,
RotorScript,
Top,
Touch
Event Graph ROUTE Table entries with 3 ROUTE connections total, showing X3D event-model relationships for this scene.
Each row shows an event cascade that may occur during a single timestamp interval between frame renderings, as part of the X3D execution model.
|
Touch
TouchSensor touchTime SFTime |
RotorScript
Script startOrStopEngine SFTime |
then
|
RotorScript
Script startEngine SFTime |
Top
ProtoInstance startTime SFTime |
||
|
then
|
RotorScript
Script stopEngine SFTime |
Top
ProtoInstance stopTime SFTime |
||||
|
MikesChopper
ProtoInstance Chopper |
No direct ROUTE connection found for events to/from this node. This ProtoInstance contains SFNode/MFNode fieldValue declarations with direct access to other nodes, and thus has potential to produce run-time animation. |
|
Top
ProtoInstance Rotor |
No direct ROUTE connection found for events to/from this node. This ProtoInstance contains SFNode/MFNode fieldValue declaration with direct access to other nodes, and thus has potential to produce run-time animation. |
<!--
Color-coding legend: X3D terminology
<X3dNode
DEF='idName' field='value'/>
matches XML terminology
<XmlElement
DEF='idName' attribute='value'/>
(Light-blue background: event-based behavior node or statement)
(Grey background inside box: inserted documentation)
(Magenta background: X3D Extensibility)
<ProtoInstance name='ProtoName'>
<field
name='fieldName'/> </ProtoInstance>
-->
<!--
For additional help information about X3D scenes, please see X3D Tooltips, X3D Resources, and X3D Scene Authoring Hints.
-->
