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Extrusion is a geometry node that sequentially stretches a 2D cross section along a 3D-spine path in the local coordinate system, creating an outer hull. Scaling and rotating the crossSection 2D outline at each control point can modify the outer hull of the Extrusion to produce a wide variety of interesting shapes.
Warning: take care to avoid defining parameter combinations that create self-intersecting, impossible or inverted geometry.
Wikipedia:
Extrusion.
X3D Tooltips of interest:
Extrusion.
X3D Specification
sections of interest:
13 Geometry3D component,
13.2 Concepts
and
13.3.5 Extrusion.
X3D Examples Archives
of related interest:
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![[1] default_extrusion.x3d (default X3D view from 0 0 10)](_viewpoints/default_extrusion.x3d._VP_Default_viewpoint.png "[1] default_extrusion.x3d (default X3D view from 0 0 10)")
