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Action:
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Determines if a scheme-object is a
curve:elliptical.
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Filename:
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kern/kern_scm/qgom_scm.cxx
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Syntax:
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(curve:elliptical? 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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Description:
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This extension returns
#t if the object is a
curve:elliptical; otherwise, it returns
#f.
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object specifies the
scheme-object that has to be queried for ellipticity.
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Example:
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; curve:elliptical?
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; Create elliptical edge 1.
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(define edge1
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(edge:elliptical (position 0 0 0)
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(position 20 0 0) .75 0 180))
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;; edge1
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; Create circular edge 2.
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(define edge2
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(edge:circular
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(position 0 0 0) 20 0 180))
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;; edge2
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; Determine if edge1 is an elliptical curve.
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(curve:elliptical? (curve:from-edge edge1))
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;; #f
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; Determine if edge2 is an elliptical curve.
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(curve:elliptical? (curve:from-edge edge2))
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;; #t
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