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Action:
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Creates a new pattern by composing two existing ones.
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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:compose pat1 pat2)
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Arg Types:
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pat1
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pattern
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pat2
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pattern
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Returns:
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pattern
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pat1 and
pat2 specifies the pattern.
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Example:
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; pattern:compose
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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 (solid:prism height
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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 pattern
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(define x-vec (gvector 2 0 0))
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;; x-vec
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(define num_x 4)
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;; num_x
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(define y-vec (gvector 1 3 0))
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;; y-vec
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(define num_y 5)
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;; num_y
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(define pat1
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(pattern:linear x-vec num_x y-vec num_y))
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;; pat1
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; make another pattern
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(set! x-vec (gvector 20 0 0))
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;; #[gvector 2 0 0]
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(set! num_x 3)
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;; 4
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(set! y-vec (gvector 10 30 0))
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;; #[gvector 1 3 0]
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(set! num_y 2)
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;; 5
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(define pat2
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(pattern:linear x-vec num_x y-vec num_y))
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;; pat2
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; compose the two patterns
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(define pat (pattern:compose pat1 pat2))
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;; pat
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; apply the pattern to the prism
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(define body (entity:pattern prism pat))
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;; body
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