Extrusion
Extrusion is a geometry node stretching a 2D cross section along a 3D-spine path in the local coordinate system. Scaling/rotating cross-sections can produce a variety of shapes.
The Extrusion node belongs to the Geometry3D 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.
SFBool [ ] beginCap TRUE
Whether beginning cap is drawn (similar to Cylinder top cap).
Warning
Cannot be changed after initial creation.
SFBool [ ] endCap TRUE
Whether end cap is drawn (similar to Cylinder end cap).
Warning
Cannot be changed after initial creation.
SFBool [ ] solid TRUE
Setting solid true means draw only one side of polygons (backface culling on), setting solid false means draw both sides of polygons (backface culling off).
Hint
If in doubt, use solid='false' for maximum visibility.
Warning
Default value true can completely hide geometry if viewed from wrong side!
SFBool [ ] ccw TRUE
Ccw = counterclockwise: ordering of vertex-coordinates orientation.
Hint
Ccw false can reverse solid (backface culling) and normal-vector orientation.
SFBool [ ] convex TRUE
Whether all polygons in a shape are convex (true), or possibly concave (false). A convex polygon is planar, does not intersect itself, and has all interior angles < 180 degrees.
Warning
Concave geometry may be invisible default convex=true.
SFFloat [ ] creaseAngle [0,∞)
CreaseAngle defines angle (in radians) where adjacent polygons are drawn with sharp edges or smooth shading. If angle between normals of two adjacent polygons is less than creaseAngle, smooth shading is rendered across the shared line segment.
Hint
CreaseAngle=0 means render all edges sharply, creaseAngle=3.14159 means render all edges smoothly.
MFVec2f [in, out] crossSection [ 1 1, 1 -1, -1 -1, -1 1, 1 1 ] (-∞,∞)
An ordered set of 2D points drawing a piecewise-linear curve and forming a planar series of connected vertices. This provides a silhouette of the outer surface.
Warning
Match clockwise/counterclockwise or impossible/inverted geometry can result!
MFRotation [in, out] orientation 0 0 1 0 [-1,1] or (-∞,∞)
Orientation is a list of axis-angle orientation 4-tuples applied at each spine-aligned cross-section plane.
Hint
Number of spine points, scale values and orientation values must be the same.
MFVec2f [in, out] scale 1 1 (0,∞)
Scale is a list of 2D-scale parameters applied at each spine-aligned cross-section plane.
Hint
Number of spine points, scale values and orientation values must be the same.
Warning
Zero or negative scale values not allowed.
MFVec3f [in, out] spine [ 0 0 0, 0 1 0 ] (-∞,∞)
Spine is a list of 3D points for a piecewise-linear curve forming a series of connected vertices, open or closed. This is the path along which the crossSection is extruded.
Hint
Number of spine points, scale values and orientation values must be the same.
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 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='8.92494 19.2002 22.8518' orientation='-0.890923584466619 0.447534192647981 0.0772548577894703 0.749638995885363'/> <Transform DEF='Extrusion'> <Shape> <Appearance> <Material ambientIntensity='0.712006' diffuseColor='1 1 1' specularColor='1 1 0.7' shininess='0.81'/> <ImageTexture url='"pattern.png"'/> <TextureTransform scale='8 80'/> </Appearance> <Extrusion beginCap='false' endCap='false' creaseAngle='3.14159' crossSection='0 1, 0.587785 0.809017, 0.951057 0.309017, 0.951057 -0.309017, 0.587785 -0.809017, 1.22465e-16 -1, -0.587785 -0.809017, -0.951057 -0.309017, -0.951057 0.309017, -0.587785 0.809017, 0 1' spine='0 0 10, 2.07912 0 9.78148, 4.06737 0 9.13545, 5.87785 0 8.09017, 7.43145 0 6.69131, 8.66025 0 5, 9.51057 0 3.09017, 9.94522 0 1.04528, 9.94522 0 -1.04528, 9.51057 0 -3.09017, 8.66025 0 -5, 7.43145 0 -6.69131, 5.87785 0 -8.09017, 4.06737 0 -9.13545, 2.07912 0 -9.78148, 5.66554e-15 0 -10, -2.07912 0 -9.78148, -4.06737 0 -9.13545, -5.87785 0 -8.09017, -7.43145 0 -6.69131, -8.66025 0 -5, -9.51057 0 -3.09017, -9.94522 0 -1.04528, -9.94522 0 1.04528, -9.51057 0 3.09017, -8.66025 0 5, -7.43145 0 6.69131, -5.87785 0 8.09017, -4.06737 0 9.13545, -2.07912 0 9.78148, 0 0 10'/> </Shape> </Transform> <Script DEF='EnterWorldScript'> <![CDATA[ecmascript: function initialize () { Browser .setBrowserOption ("Shading", "PHONG"); Browser .setBrowserOption ("PrimitiveQuality", "HIGH"); } ]]> </Script> </Scene> </X3D> |
Classic Encoding
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#X3D V3.3 utf8 Titania V4.0.6 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 8.92494 19.2002 22.8518 orientation -0.890923584466619 0.447534192647981 0.0772548577894703 0.749638995885363 } DEF Extrusion Transform { children Shape { appearance Appearance { material Material { ambientIntensity 0.712006 diffuseColor 1 1 1 specularColor 1 1 0.7 shininess 0.81 } texture ImageTexture { url "pattern.png" } textureTransform TextureTransform { scale 8 80 } } geometry Extrusion { beginCap FALSE endCap FALSE creaseAngle 3.14159 crossSection [ 0 1, 0.587785 0.809017, 0.951057 0.309017, 0.951057 -0.309017, 0.587785 -0.809017, 1.22465e-16 -1, -0.587785 -0.809017, -0.951057 -0.309017, -0.951057 0.309017, -0.587785 0.809017, 0 1 ] spine [ 0 0 10, 2.07912 0 9.78148, 4.06737 0 9.13545, 5.87785 0 8.09017, 7.43145 0 6.69131, 8.66025 0 5, 9.51057 0 3.09017, 9.94522 0 1.04528, 9.94522 0 -1.04528, 9.51057 0 -3.09017, 8.66025 0 -5, 7.43145 0 -6.69131, 5.87785 0 -8.09017, 4.06737 0 -9.13545, 2.07912 0 -9.78148, 5.66554e-15 0 -10, -2.07912 0 -9.78148, -4.06737 0 -9.13545, -5.87785 0 -8.09017, -7.43145 0 -6.69131, -8.66025 0 -5, -9.51057 0 -3.09017, -9.94522 0 -1.04528, -9.94522 0 1.04528, -9.51057 0 3.09017, -8.66025 0 5, -7.43145 0 6.69131, -5.87785 0 8.09017, -4.06737 0 9.13545, -2.07912 0 9.78148, 0 0 10 ] } } } DEF EnterWorldScript Script { url "ecmascript: function initialize () { Browser .setBrowserOption (\"Shading\", \"PHONG\"); Browser .setBrowserOption (\"PrimitiveQuality\", \"HIGH\"); } " } |
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": [ 8.92494, 19.2002, 22.8518 ], "@orientation": [ -0.890923584466619, 0.447534192647981, 0.0772548577894703, 0.749638995885363 ] } }, { "Transform": { "@DEF": "Extrusion", "-children": [ { "Shape": { "-appearance": { "Appearance": { "-material": { "Material": { "@ambientIntensity": 0.712006, "@diffuseColor": [ 1, 1, 1 ], "@specularColor": [ 1, 1, 0.7 ], "@shininess": 0.81 } }, "-texture": { "ImageTexture": { "@url": [ "pattern.png" ] } }, "-textureTransform": { "TextureTransform": { "@scale": [ 8, 80 ] } } } }, "-geometry": { "Extrusion": { "@beginCap": false, "@endCap": false, "@creaseAngle": 3.14159, "@crossSection": [ 0, 1, 0.587785, 0.809017, 0.951057, 0.309017, 0.951057, -0.309017, 0.587785, -0.809017, 1.22465e-16, -1, -0.587785, -0.809017, -0.951057, -0.309017, -0.951057, 0.309017, -0.587785, 0.809017, 0, 1 ], "@spine": [ 0, 0, 10, 2.07912, 0, 9.78148, 4.06737, 0, 9.13545, 5.87785, 0, 8.09017, 7.43145, 0, 6.69131, 8.66025, 0, 5, 9.51057, 0, 3.09017, 9.94522, 0, 1.04528, 9.94522, 0, -1.04528, 9.51057, 0, -3.09017, 8.66025, 0, -5, 7.43145, 0, -6.69131, 5.87785, 0, -8.09017, 4.06737, 0, -9.13545, 2.07912, 0, -9.78148, 5.66554e-15, 0, -10, -2.07912, 0, -9.78148, -4.06737, 0, -9.13545, -5.87785, 0, -8.09017, -7.43145, 0, -6.69131, -8.66025, 0, -5, -9.51057, 0, -3.09017, -9.94522, 0, -1.04528, -9.94522, 0, 1.04528, -9.51057, 0, 3.09017, -8.66025, 0, 5, -7.43145, 0, 6.69131, -5.87785, 0, 8.09017, -4.06737, 0, 9.13545, -2.07912, 0, 9.78148, 0, 0, 10 ] } } } } ] } }, { "Script": { "@DEF": "EnterWorldScript", "#sourceText": [ "ecmascript:", "function initialize ()", "{", "\tBrowser .setBrowserOption (\"Shading\", \"PHONG\");", "\tBrowser .setBrowserOption (\"PrimitiveQuality\", \"HIGH\");", "}" ] } } ] } } } |
Titania
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