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Action:
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Determines if a Scheme object is a
face:spline.
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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:spline? object)
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Arg Types:
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object
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scheme-object
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Returns:
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boolean
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object specifies the
scheme-object that has to be queried for a face spline.
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Example:
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; face:spline?
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; Define a spline edge 1.
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(define e1 (edge:spline (list (position 0 0 0)
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(position 20 -20 0) (position 20 0 0))))
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;; e1
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; Define linear edge 2.
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(define e2 (edge:linear (position 20 0 0)
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(position 20 20 0)))
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;; e2
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; Define linear edge 3.
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(define e3 (edge:linear (position 20 20 0)
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(position 0 20 0)))
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;; e3
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; Define linear edge 4.
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(define e4 (edge:linear (position 0 20 0)
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(position 0 0 0)))
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;; e4
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; Define a wire body from
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; the spline and linear edges.
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(define w (wire-body (list e1 e2 e3 e4)))
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;; w
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; Create a solid by sweeping
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; a planar wire along a vector.
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(define ws (solid:sweep-wire w (gvector 0 0 20)))
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;; ws
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; Get the faces of the solid.
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(define edges1 (entity:faces ws))
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;; edges1
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; Determine if one of the faces is a spline face.
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(face:spline? (car (cdr edges1)))
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;; #f
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; Determine if another face is a spline face.
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(face:spline? (car (cdr (cdr (cdr edges1)))))
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;; #t
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