VRML 2 Sourcebook X3D Examples Archive, Chapter 15 Extrusion

X3D Example Archives: VRML 2 Sourcebook, Chapter 15 Extrusion

Extrusion geometry is defined by a 2D cross-section that is stretched and rotated around a central spine.

Extruded shapes are very common: tubes, pipes, bars, vases, donuts, and other tricky uses. An Extrusion node efficiently creates extruded shapes. The crossSection field specifies the cross-section, and the spine field specifies the sweep path. The scale and orientation fields specify scaling and rotation at each spine point.

These X3D scenes are adapted directly from the original VRML 2.0 Sourcebook chapter examples. Also available: Introduction to VRML97 SIGGRAPH98 course notes.

21 X3D Models		X3D Model Descriptions
	Figure 15 07 Extruded Cylinder	An extruded cylinder built using a circular cross section swept along a straight spine.
	Figure 15 08 Extruded Half Cylinder With Caps	An extruded half cylinder built using half of a circular cross section swept along a straight spine. Also see Figure 15.9 for comparison.
	Figure 15 08 Extruded Half Cylinder With Caps With Axes	An extruded half cylinder built using half of a circular cross section swept along a straight spine. Also see Figure 15.9 for comparison.
	Figure 15 09 Extruded Half Cylinder Without Caps	An extruded half cylinder with its beginning and ending caps turned off. Also see Figure 15.8 for comparison.
	Figure 15 09 Extruded Half Cylinder Without Caps With Axes	An extruded half cylinder with its beginning and ending caps turned off. Also see Figure 15.8 for comparison.
	Figure 15 10 Extruded Room	An extruded room using a floor plan as the cross section.
	Figure 15 10 Extruded Room With Axes	An extruded room using a floor plan as the cross section.
	Figure 15 11 Extruded Playground Slide	A playground slide built by extruding a half-circle cross section along a helical spine.
	Figure 15 11 Extruded Playground Slide With Axes	A playground slide built by extruding a half-circle cross section along a helical spine.
	Figure 15 12 Torus	A torus built using a circular cross section swept along a circular spine.
	Figure 15 12 Torus With Axes	A torus built using a circular cross section swept along a circular spine.
	Figure 15 13 Extruded Pyramid	A pyramid built by scaling a square cross section to 0.01 at the pyramid apex.
	Figure 15 13 Extruded Pyramid With Axes	A pyramid built by scaling a square cross section to 0.01 at the pyramid apex.
	Figure 15 14 Extruded Vase	A vase built by scaling a circular cross section at each coordinate along a straight spine.
	Figure 15 14 Extruded Vase With Axes	A vase built by scaling a circular cross section at each coordinate along a straight spine.
	Figure 15 15 Twisted Bar	A bar twisted using Y-axis, cross-section rotation at each spine coordinate.
	Figure 15 15 Twisted Bar With Axes	A bar twisted using Y-axis, cross-section rotation at each spine coordinate.
	Figure 15 16 Extruded Lipstick	A lipstick shape created by rotating a circular cross section about the X axis as it is extruded.
	Figure 15 16 Extruded Lipstick With Axes	A lipstick shape created by rotating a circular cross section about the X axis as it is extruded.
	Figure 15 17 Wiggling Snake	A wiggling snake whose spine is animated using a CoordinateInterpolator node.
	Figure 15 17 Wiggling Snake With Axes	A wiggling snake whose spine is animated using a CoordinateInterpolator node.

The X3D Resources: Examples page and Savage Developers Guide provide more information about the production of this archive.