Arc2D
Arc2D is a geometry node that defines a linear circular arc with center (0,0) in X-Y plane, with angles measured starting at positive x-axis and sweeping towards positive y-axis.
The Arc2D node belongs to the Geometry2D component and its container field is geometry. It is available since X3D version 3.0 or later.
Fields
SFNode [in, out] metadata NULL [X3DMetadataObject]
Metadata are not part of the X3D world and not interpreted by the X3D browser, but they can be accessed via the ECMAScript interface.
SFFloat [in, out] startAngle [-2π,2π]
Arc extends from startAngle counterclockwise to endAngle, in radians.
Warning
Simple-geometry dimensions are initializeOnly and cannot be changed after initial creation, for animation use Transform scale instead.
SFFloat [in, out] endAngle 1.5708 [-2π,2π]
Arc extends from startAngle counterclockwise to endAngle, in radians.
Warning
Simple-geometry dimensions are initializeOnly and cannot be changed after initial creation, for animation use Transform scale instead.
SFFloat [ ] radius 1 (0,∞)
Circle radius, of which the arc is a portion.
Warning
Simple-geometry dimensions are initializeOnly and cannot be changed after initial creation, for animation use Transform scale instead.
Example
XML Encoding
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<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.3//EN" "http://www.web3d.org/specifications/x3d-3.3.dtd"> <X3D profile='Full' version='3.3' xmlns:xsd='http://www.w3.org/2001/XMLSchema-instance' xsd:noNamespaceSchemaLocation='http://www.web3d.org/specifications/x3d-3.3.xsd'> <head> <meta name='comment' content='World of Titania'/> </head> <Scene> <NavigationInfo DEF='_1' type='"EXAMINE"' transitionType='"ANIMATE"'/> <Background skyAngle='1.5708' skyColor='0.1 0.1 0.1, 0.3 0.3 0.3' groundAngle='1.5708' groundColor='0.1 0.1 0.1, 0.3 0.3 0.3'/> <Viewpoint description='Initial View' position='0 0 3.08613' centerOfRotation='-0.0197983 -0.0453368 0'/> <Transform DEF='Arc2D'> <Shape> <Appearance> <LineProperties linewidthScaleFactor='4'/> <Material DEF='Tropical26' emissiveColor='0 0.521996 0.327569'/> </Appearance> <Arc2D startAngle='5.55' endAngle='3.88'/> </Shape> </Transform> </Scene> </X3D> |
Classic Encoding
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#X3D V3.3 utf8 Titania V3.0.4 PROFILE Full META "comment" "World of Titania" NavigationInfo { type "EXAMINE" transitionType "ANIMATE" } Background { skyAngle 1.5708 skyColor [ 0.1 0.1 0.1, 0.3 0.3 0.3 ] groundAngle 1.5708 groundColor [ 0.1 0.1 0.1, 0.3 0.3 0.3 ] } Viewpoint { description "Initial View" position 0 0 3.08613 centerOfRotation -0.0197983 -0.0453368 0 } DEF Arc2D Transform { children Shape { appearance Appearance { lineProperties LineProperties { linewidthScaleFactor 4 } material DEF Tropical26 Material { emissiveColor 0 0.521996 0.327569 } } geometry Arc2D { startAngle 5.55 endAngle 3.88 } } } |
JSON Encoding
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{ "X3D": { "encoding": "UTF-8", "@profile": "Full", "@version": "3.3", "@xsd:noNamespaceSchemaLocation": "http://www.web3d.org/specifications/x3d-3.3.xsd", "JSON schema": "http://www.web3d.org/specifications/x3d-3.3-JSONSchema.json", "head": { "meta": [ { "@name": "comment", "@content": "World of Titania" } ] }, "Scene": { "-children": [ { "NavigationInfo": { "@type": [ "EXAMINE" ], "@transitionType": [ "ANIMATE" ] } }, { "Background": { "@skyAngle": [ 1.5708 ], "@skyColor": [ 0.1, 0.1, 0.1, 0.3, 0.3, 0.3 ], "@groundAngle": [ 1.5708 ], "@groundColor": [ 0.1, 0.1, 0.1, 0.3, 0.3, 0.3 ] } }, { "Viewpoint": { "@description": "Initial View", "@position": [ 0, 0, 3.08613 ], "@centerOfRotation": [ -0.0197983, -0.0453368, 0 ] } }, { "Transform": { "@DEF": "Arc2D", "-children": [ { "Shape": { "-appearance": { "Appearance": { "-lineProperties": { "LineProperties": { "@linewidthScaleFactor": 4 } }, "-material": { "Material": { "@DEF": "Tropical26", "@emissiveColor": [ 0, 0.521996, 0.327569 ] } } } }, "-geometry": { "Arc2D": { "@startAngle": 5.55, "@endAngle": 3.88 } } } } ] } } ] } } } |
Titania
X_ITE