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Action:
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Gets the ray along the axis of a cylindrical-face entity.
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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:cylinder-axis entity)
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Arg Types:
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entity
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cylindrical-face
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Returns:
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ray
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Description:
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The returned ray is a gvector and position that specify the central axis of the cylinder face supplied as the
entity input. Note that the input argument is cylinder face and not a
solid:cylinder.
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entity specifies a cylindrical-face.
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Example:
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; face:cylinder-axis
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; Create a solid cylinder.
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(define cyl1
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(solid:cylinder (position 0 0 0)
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(position 8 8 8) 32))
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;; cyl1
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; Find the faces of the cylinder.
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(define faces1 (entity:faces cyl1))
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;; faces1
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; Determine the axis of a cylindrical face.
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(face:cylinder-axis (car faces1))
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;; #[ray (4 4 4) (0.57735 0.57735 0.57735)]
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