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Action:
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Creates a new pattern that is a reflection of the specified one through a given plane.
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Filename:
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kern/kern_scm/pattern_scm.cxx
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Syntax:
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(pattern:reflect pat root normal)
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Arg Types:
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pat
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pattern
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root
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position
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normal
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gvector
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Returns:
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pattern
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Description:
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Creates a pattern that is a reflection of the pattern
pat.
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pat specifies a pattern.
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root specifies a point on the plane of reflection.
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normal specifies the normal to the reflection plane.
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Example:
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; pattern:reflect
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; make a prism
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(define height 1)
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;; height
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(define maj_rad 1)
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;; maj_rad
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(define min_rad 0.5)
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;; min_rad
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(define num_sides 3)
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;; num_sides
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(define prism
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(solid:prism height maj_rad min_rad num_sides))
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;; prism
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; position the prism
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(define origin (position 1 2 3))
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;; origin
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(define transform (entity:transform prism
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(transform:axes
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origin (gvector 1 0 0) (gvector 0 1 0))))
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;; transform
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; make a copy of the prism
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(define prismr (entity:copy prism))
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;; prismr
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; make a pattern
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(define t1 (transform:translation (gvector 0 0 0)))
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;; t1
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(define t2 (transform:translation (gvector 2 2 0)))
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;; t2
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(define t3 (transform:translation (gvector 4 0 0)))
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;; t3
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(define t4 (transform:translation (gvector 0 4 0)))
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;; t4
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(define t5 (transform:translation (gvector 4 4 0)))
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;; t5
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(define pat (pattern:from-list
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(list t1 t2 t3 t4 t5)))
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;; pat
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; reflect the pattern about the origin
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(define root (position 0 0 0))
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;; root
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(define normal (gvector 1 1 0))
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;; normal
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(define patr (pattern:reflect pat root normal))
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;; patr
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; apply the original pattern to the original prism
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(define apply (entity:pattern prism pat))
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;; apply
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; apply the reflected pattern to the copy
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(define body (entity:pattern prismr patr))
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;; body
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