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Action:
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Gets the plane from a planar face as a ray.
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Filename:
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kern/kern_scm/qfac_scm.cxx
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Syntax:
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(face:plane-ray entity)
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Arg Types:
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entity
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planar-face
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Returns:
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gvector
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Description:
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This extension represents the specified planar face as a ray.
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entity specifies a face entity.
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Example:
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; face:plane-ray
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; Create a solid block.
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(define block1
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(solid:block (position 0 0 0)
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(position 40 40 40)))
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;; block1
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; Get a list of the solid block's faces.
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(define faces1 (entity:faces block1))
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;; faces1
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; Extract a plane from one of the faces and
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; represent the face as a ray.
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(face:plane-ray (car (cdr faces1)))
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;; #[ray (20 20 0) (0 0 -1)]
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; Do the same with a second face.
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(face:plane-ray (car (cdr (cdr (cdr faces1)))))
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;; #[ray (0 20 20) (-1 0 0)]
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