Geometry2dComponentPrototypes.x3d (X3dToXhtml listing)

ecmascript: function initialize() { numOfPoints = 100; if (radius < 0) { Browser.println ('[Arc2D] Warning: invalid value, radius=' + value + ' must instead be >= 0'); } if ((startAngle < 0) || (startAngle >= 2 * Math.PI)) { Browser.println ('[Arc2D] Warning: startAngle=' + startAngle + ' must be within range [0..2pi)'); // (] } if ((endAngle < 0) || (endAngle >= 2 * Math.PI)) { Browser.println ('[Arc2D] Warning: endAngle=' + endAngle + ' must be within range [0..2pi)'); // (] } // equal startAngle, endAngle means draw full circle. // high out-of-range endAngle is OK for local computation. if (startAngle >= endAngle) endAngle = endAngle + 2 * Math.PI; differAng = Math.abs((endAngle - startAngle)) / numOfPoints; for (i = 0; i <= numOfPoints; i++) { arcSet3d[i] = new SFVec3f (radius * Math.cos(startAngle + i * differAng), radius * Math.sin(startAngle + i * differAng), 0.0); arcIndexSet3d[i] = i; } } // initialize

ecmascript: function initialize() { if (radius < 0) { Browser.println ('[ArcClose2D] Warning: invalid value, radius=' + value + ' must instead be >= 0'); } if ((startAngle < 0) || (startAngle >= 2 * Math.PI)) { Browser.println ('[ArcClose2D] Warning: startAngle=' + startAngle + ' must be within range [0..2pi)'); //(] } if ((endAngle< 0) || (endAngle>= 2 * Math.PI)) { Browser.println ('[ArcClose2D] Warning: endAngle=' + endAngle+ ' must be within range [0..2pi)'); // (] } // equal startAngle, endAngle means draw full circle. // high out-of-range endAngle is OK for local computation. if (startAngle >= endAngle) endAngle = endAngle + 2*Math.PI; numOfPoints = 100; differAng = Math.abs((endAngle - startAngle))/numOfPoints; for ( i=0 ; i<=numOfPoints ; i++) { if ( i == numOfPoints) arcSet3d[i] = new SFVec3f (0.0, 0.0, 0.0); else arcSet3d[i] = new SFVec3f ( radius*Math.cos(startAngle + i*differAng), radius*Math.sin(startAngle + i*differAng), 0.0 ); } k=0; if (closureType =='PIE') for ( i=0 ; i<numOfPoints ; i++) { pointIndex[k] = numOfPoints; pointIndex[k+1] = i; pointIndex[k+2] = i + 1; pointIndex[k+3] = numOfPoints; pointIndex[k+4] = -1; k=k+5; } else for ( i=0 ; i<numOfPoints-1 ; i++) { pointIndex[k] = 0; pointIndex[k+1] = i; pointIndex[k+2] = i + 1; pointIndex[k+3] = 0; pointIndex[k+4] = -1; k=k+5; } } // initialize

ecmascript: function initialize() { if (radius < 0) { Browser.println ('[ArcCloseUnfilled2D] Warning: invalid value, radius=' + value + ' must instead be >= 0'); } if ((startAngle < 0) || (startAngle >= 2 * Math.PI)) { Browser.println ('[ArcCloseUnfilled2D] Warning: startAngle=' + startAngle + ' must be within range [0..2pi)'); //(] } if ((endAngle< 0) || (endAngle>= 2 * Math.PI)) { Browser.println ('[ArcCloseUnfilled2D] Warning: endAngle=' + endAngle+ ' must be within range [0..2pi)'); //(] } // equal startAngle, endAngle means draw full circle. // high out-of-range endAngle is OK for local computation. if (startAngle >= endAngle) endAngle = endAngle + 2*Math.PI; numOfPoints = 100; differAng = Math.abs((endAngle - startAngle))/numOfPoints; for ( i=0 ; i<=numOfPoints +1 ; i++) { if ( i == numOfPoints +1) arcSet3d[i] = new SFVec3f (0.0, 0.0, 0.0); else arcSet3d[i] = new SFVec3f ( radius*Math.cos(startAngle + i*differAng), radius*Math.sin(startAngle + i*differAng), 0.0 ); } if (closureType =='CHORD') { for ( i=0 ; i<=numOfPoints +1 ; i++) { if ( i == numOfPoints +1) pointIndex[i] = 0.0; else pointIndex[i] = i; } } else { for ( i=0 ; i<=numOfPoints +1 ; i++) { pointIndex[i] = i; } pointIndex[i] = 0.0; } } // initialize

ecmascript: function initialize() { if (radius < 0) { Browser.println ('[Circle2D] Warning: invalid value, radius=' + value + ' must instead be >= 0'); } numOfPoints = 100; differAng = 2*Math.PI/numOfPoints; for ( i=0 ; i<=numOfPoints ; i++) { circSet3d[i] = new SFVec3f ( radius*Math.cos(i*differAng), radius*Math.sin(i*differAng), 0.0 ); circIndexSet3d[i] = i; } } // initialize

ecmascript: function initialize() { if (innerRadius < 0) { Browser.println ('[Disk2D] Warning: invalid value, innerRadius=' + value + ' must instead be >= 0'); } if (outerRadius < 0) { Browser.println ('[Disk2D] Warning: invalid value, outerRadius=' + value + ' must instead be >= 0'); } numOfPoints = 100.0; diskSet3d = new MFVec3f(); diskIndexSet3d = new MFInt32(); differAng = 2 * Math.PI/numOfPoints; for ( i=0 ; i<2*numOfPoints ; i++) { if ( i<numOfPoints) diskSet3d[i] = new SFVec3f ( innerRadius*Math.cos(i*differAng), innerRadius*Math.sin(i*differAng), 0.0 ); else diskSet3d[i] = new SFVec3f ( outerRadius*Math.cos((i-numOfPoints-1.0)*differAng), outerRadius*Math.sin((i-numOfPoints-1.0)*differAng), 0.0 ); } k=0; for (i=0 ; i<numOfPoints ; i++) { diskIndexSet3d[k] = i; diskIndexSet3d[k+1] = i + numOfPoints; diskIndexSet3d[k+2] = i + numOfPoints + 1; diskIndexSet3d[k+3] = i; diskIndexSet3d[k+4] = -1; diskIndexSet3d[k+5] = i+1; diskIndexSet3d[k+6] = i ; diskIndexSet3d[k+7] = i + numOfPoints +1; diskIndexSet3d[k+8] = i +1; diskIndexSet3d[k+9] = -1; if (i == numOfPoints-1) { diskIndexSet3d[k] = i; diskIndexSet3d[k+1] = i + numOfPoints; diskIndexSet3d[k+2] = numOfPoints; diskIndexSet3d[k+3] = i; diskIndexSet3d[k+4] = -1; diskIndexSet3d[k+5] = 0; diskIndexSet3d[k+6] = i; diskIndexSet3d[k+7] = numOfPoints; diskIndexSet3d[k+8] = 0; diskIndexSet3d[k+9] = -1; } k=k+10; } } // initialize

ecmascript: function initialize() { for ( i=0 ; i<lineSegments.length ; i++) { lineSegments3D[i] = new SFVec3f ( lineSegments[i].x, lineSegments[i].y, 0.0 ); lineSegmentsIndex[i] = i; } lineSegmentsIndex[i] = -1; } // initialize

ecmascript: function initialize() { xDim = size[0]; yDim = size[1]; pointSet3d[0] = new SFVec3f ( (-xDim / 2.0), (yDim / 2.0), 0.0 ); pointSet3d[1] = new SFVec3f ( (-xDim / 2.0), (-yDim / 2.0), 0.0 ); pointSet3d[2] = new SFVec3f ( (xDim / 2.0), (-yDim / 2.0), 0.0 ); pointSet3d[3] = new SFVec3f ( (xDim / 2.0), (yDim / 2.0), 0.0 ); } // initialize

ecmascript: function initialize() { numbOfTriangles = Math.floor(vertices.length/3); for ( i=0 ; i<3*numbOfTriangles ; i++) { triangleSet3D[i] = new SFVec3f ( vertices[i].x, vertices[i].y, 0.0 ); } k=0; for (i=0; i<numbOfTriangles; i++) { triangleSetIndex[k] = k - i ; triangleSetIndex[k+1] = k - i + 1 ; triangleSetIndex[k+2] = k - i + 2 ; triangleSetIndex[k+3] = -1 ; k=k+4; } } // initialize

Event Graph ROUTE Table entries with 17 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.

Arc2dToFaceSet3d Script arcSet3d MFVec3f	→ ROUTE event to (1)	Arc3DPoints Coordinate point MFVec3f
Arc2dToFaceSet3d Script arcIndexSet3d MFInt32	→ ROUTE event to (1)	ArcIndexPoints IndexedLineSet set_coordIndex MFInt32

ArcClose2dToFaceSet3d Script arcSet3d MFVec3f	→ ROUTE event to (1)	ArcClose2DFaceCoordinate Coordinate point MFVec3f
ArcClose2dToFaceSet3d Script pointIndex MFInt32	→ ROUTE event to (1)	ArcPointFaceIndex IndexedFaceSet set_coordIndex MFInt32

ArcClose2dToLineSet3d Script arcSet3d MFVec3f	→ ROUTE event to (1)	ArcClose2DLineCoordinate Coordinate point MFVec3f
ArcClose2dToLineSet3d Script pointIndex MFInt32	→ ROUTE event to (1)	ArcPointLineIndex IndexedLineSet set_coordIndex MFInt32

Circ2dToLineSet3d Script circSet3d MFVec3f	→ ROUTE event to (1)	Circ3DPoints Coordinate point MFVec3f
Circ2dToLineSet3d Script circIndexSet3d MFInt32	→ ROUTE event to (1)	Circ3DPointsIndex IndexedLineSet set_coordIndex MFInt32

Disk2dToFaceSet3d Script diskSet3d MFVec3f	→ ROUTE event to (1)	Disk3DPoints Coordinate point MFVec3f
Disk2dToFaceSet3d Script diskIndexSet3d MFInt32	→ ROUTE event to (1)	DiskPointsIndex IndexedFaceSet set_coordIndex MFInt32

LineSegments2dToLineSet3d Script lineSegments3D MFVec3f	→ ROUTE event to (1)	LineSegments3DPoints Coordinate point MFVec3f
LineSegments2dToLineSet3d Script lineSegmentsIndex MFInt32	→ ROUTE event to (1)	LinesSegmentsIndexPoints IndexedLineSet set_coordIndex MFInt32

Points2dToLineSet3d
Script
points3D
MFVec3f

→
ROUTE
event to
(1)

Points3D
Coordinate
point
MFVec3f

Rect2dToFaceSet3d
Script
pointSet3d
MFVec3f

→
ROUTE
event to
(1)

RectanglePoints
Coordinate
point
MFVec3f

Rect2dToLineSet3d
Script
pointSet3d
MFVec3f

→
ROUTE
event to
(1)

RectanglePointsLine
Coordinate
point
MFVec3f

TriangleSet2dToLineSet3d Script triangleSet3D MFVec3f	→ ROUTE event to (1)	TriangleSet3DPoints Coordinate point MFVec3f
TriangleSet2dToLineSet3d Script triangleSetIndex MFInt32	→ ROUTE event to (1)	TriangleSetIndexPoints IndexedFaceSet set_coordIndex MFInt32

LinkToExamples
Anchor

description='link to examples'
User-interaction hint for this node.

Additional guidance on X3D animation can be found in the 10-Step Animation Design Process and Event Tracing hint sheets. Have fun with X3D! 😀

1	`<?xml version="1.0" encoding="UTF-8"?>`
2	`<!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.0//EN" "https://www.web3d.org/specifications/x3d-3.0.dtd">`
3	<X3D profile='Immersive' version='3.0' xmlns:xsd='http://www.w3.org/2001/XMLSchema-instance' xsd:noNamespaceSchemaLocation='https://www.web3d.org/specifications/x3d-3.0.xsd'>
4	<head>
5	<meta name='title' content='Geometry2dComponentPrototypes.x3d'/>
6	<meta name='description' content='X3D Geometry2D component nodes, implemented as prototypes for developmental use to provide backwards compatibility with VRML 97. Arc2D specifies a 2D linear circular arc. ArcClose2D specifies a portion of a circle. Circle2D specifies a 2D circular line. Disk2D specifies a 2D circular disk. Polyline2D specifies 2D line segments. Polypoint2D specifies 2D point array. Rectangle2D specifies a 2D rectangle. TriangleSet2D specifies 2D triangles. 2D nodes are considered particularly helpful for CADPart geometry and building user interfaces such as Heads-Up Displays (HUDs).'/>
7	<meta name='creator' content='Christos Kalogrias, Don Brutzman, Ken Curtin, Duane Davis'/>
8	<meta name='created' content='14 November 2003'/>
9	<meta name='modified' content='20 October 2019'/>
10	<meta name=' warning ' content=' These examples are complete but only used for developmental testing, not regular X3D authoring. '/>
11	<meta name='reference' content='Geometry2dComponentExternProtos.x3d'/>
12	<meta name='reference' content='Geometry2dComponentExamples.x3d'/>
13	<meta name='reference' content='https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/components/geometry2D.html'/>
14	<meta name='subject' content='Geometry2D component nodes (Arc2D ArcClose2D Circle2D Disk2D Polyline2D Polypoint2D Rectangle2D TriangleSet2D)'/>
15	<meta name='identifier' content='https://www.web3d.org/x3d/content/examples/Basic/development/Geometry2dComponentPrototypes.x3d'/>
16	<meta name='generator' content='X3D-Edit 3.3, https://savage.nps.edu/X3D-Edit'/>
17	<meta name='license' content='../license.html'/>
18	</head>

19	<Scene>
20	<!-- ==================== -->
21	<WorldInfo title='Geometry2dComponentPrototypes.x3d'/>
22	<ProtoDeclare name='Arc2D'>
23	<ProtoInterface>
24	<field name='startAngle' type='SFFloat' value='0' accessType='initializeOnly'/>
25	<field name='endAngle' type='SFFloat' value='1.5707963265' accessType='initializeOnly'/>
26	<field name='radius' type='SFFloat' value='1' accessType='initializeOnly'/>
27	<field name='metadata' type='SFNode' accessType='inputOutput' appinfo='Metadata node only'>
28	<!-- default NULL -->
29	</field>
30	</ProtoInterface>
31	<ProtoBody>
32	<!-- Only the first node counts as the node type of a prototype. This node must be a geometry node. -->
33	<!-- ROUTE information for ArcIndexPoints node: [from Arc2dToFaceSet3d.arcIndexSet3d to set_coordIndex ] --> <IndexedLineSet DEF='ArcIndexPoints'>
34	<!-- ROUTE information for Arc3DPoints node: [from Arc2dToFaceSet3d.arcSet3d to point ] --> <Coordinate DEF='Arc3DPoints'/>
35	</IndexedLineSet>
36	<!-- Any nodes after initial node in a ProtoBody is not rendered. -->
37	<Group>
38	<IS>
39	<connect nodeField='metadata' protoField='metadata'/>
40	</IS>
41	<!-- ROUTE information for Arc2dToFaceSet3d node: [from arcSet3d to Arc3DPoints.point ] [from arcIndexSet3d to ArcIndexPoints.set_coordIndex ] --> <Script DEF='Arc2dToFaceSet3d'>
42	<field name='startAngle' type='SFFloat' accessType='initializeOnly'/>
43	<field name='endAngle' type='SFFloat' accessType='initializeOnly'/>
44	<field name='radius' type='SFFloat' accessType='initializeOnly'/>
45	<field name='arcSet3d' type='MFVec3f' accessType='outputOnly'/>
46	<field name='arcIndexSet3d' type='MFInt32' accessType='outputOnly'/>
47	<IS>
48	<connect nodeField='startAngle' protoField='startAngle'/>
49	<connect nodeField='endAngle' protoField='endAngle'/>
50	<connect nodeField='radius' protoField='radius'/>
51	</IS>
	`<![CDATA[` ecmascript: function initialize() { numOfPoints = 100; if (radius < 0) { Browser.println ('[Arc2D] Warning: invalid value, radius=' + value + ' must instead be >= 0'); } if ((startAngle < 0) \|\| (startAngle >= 2 * Math.PI)) { Browser.println ('[Arc2D] Warning: startAngle=' + startAngle + ' must be within range [0..2pi)'); // (] } if ((endAngle < 0) \|\| (endAngle >= 2 * Math.PI)) { Browser.println ('[Arc2D] Warning: endAngle=' + endAngle + ' must be within range [0..2pi)'); // (] } // equal startAngle, endAngle means draw full circle. // high out-of-range endAngle is OK for local computation. if (startAngle >= endAngle) endAngle = endAngle + 2 * Math.PI; differAng = Math.abs((endAngle - startAngle)) / numOfPoints; for (i = 0; i <= numOfPoints; i++) { arcSet3d[i] = new SFVec3f (radius * Math.cos(startAngle + i * differAng), radius * Math.sin(startAngle + i * differAng), 0.0); arcIndexSet3d[i] = i; } } // initialize `]]>`
53	</Script>
54	< ROUTE fromNode='Arc2dToFaceSet3d' fromField='arcSet3d' toNode='Arc3DPoints' toField='point'/>
55	< ROUTE fromNode='Arc2dToFaceSet3d' fromField='arcIndexSet3d' toNode='ArcIndexPoints' toField='set_coordIndex'/>
56	</Group>
57	</ProtoBody>
58	</ProtoDeclare>

X3D Model Documentation: Geometry2dComponentPrototypes.x3d