#VRML V2.0 utf8
# X3D-to-VRML-97 XSL translation autogenerated by X3dToVrml97.xslt
# http://www.web3d.org/x3d/content/X3dToVrml97.xslt
# Generated using XSLT processor: SAXON 8.7 from Saxonica
# [X3D] VRML V3.0 utf8
# PROFILE Immersive
# [X3D] version=3.0
# [X3D] noNamespaceSchemaLocation=http://www.web3d.org/specifications/x3d-3.0.xsd
# [head]
# META "title" "Geometry2dComponentPrototypes.x3d"
# META "description" "X3D Geometry2D component nodes, implemented as prototypes for 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 points. Rectangle2D specifies a 2D rectangle. TriangleSet2D specifies 2D triangles. 2D nodes are considered particularly helpful for building user interfaces such as Heads-Up Displays (HUDs)."
# META "creator" "Christos Kalogrias, Don Brutzman, Ken Curtin, Duane Davis"
# META "created" "14 November 2003"
# META "modified" "25 February 2007"
# META "reference" "Geometry2dComponentExamples.x3d"
# META "reference" "http://www.web3d.org/spec_editors/abstract/Part01/components/geometry2D.html"
# META "subject" "Geometry2D component nodes (Arc2D ArcClose2D Circle2D Disk2D Polyline2D Polypoint2D Rectangle2D TriangleSet2D)"
# META "identifier" "http://www.web3d.org/x3d/content/examples/Basic/development/Geometry2dComponentPrototypes.x3d"
# META "generator" "X3D-Edit 3.2, https://savage.nps.edu/X3D-Edit"
# META "license" "../license.html"
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# [Scene] ========== ========== ==========
# ====================
PROTO Arc2D [
field SFFloat startAngle 0
field SFFloat endAngle 1.5707963265
field SFFloat radius 1
exposedField SFNode metadata NULL # [appinfo] Metadata node only
# default NULL
] {
### Warning: ProtoBody child following first child will not be rendered, since the first child determines node type. (Authors can silence this warning by placing a comment as second child.)
DEF ArcIndexPoints IndexedLineSet {
coord DEF Arc3DPoints Coordinate {
}
}
Group {
metadata IS metadata
children [
DEF Arc2dToFaceSet3d Script {
field SFFloat startAngle IS startAngle
field SFFloat endAngle IS endAngle
field SFFloat radius IS radius
eventOut MFVec3f arcSet3d
eventOut MFInt32 arcIndexSet3d
url [ "javascript:
// ### X3D Browser.print() not supported by all VRML97 viewers, instead simply use print()
function initialize()
{
numOfPoints = 100;
if (radius < 0)
{
print ('[Arc2D] Warning: invalid value, radius=' + value + ' must instead be >= 0');
}
if ((startAngle < 0) || (startAngle >= 2 * Math.PI))
{
print ('[Arc2D] Warning: startAngle=' + startAngle + ' must be within range [0..2pi)'); // (]
}
if ((endAngle < 0) || (endAngle >= 2 * Math.PI))
{
print ('[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
" ]
}
]
ROUTE Arc2dToFaceSet3d.arcSet3d TO Arc3DPoints.point
ROUTE Arc2dToFaceSet3d.arcIndexSet3d TO ArcIndexPoints.set_coordIndex
}
}