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Action:
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Gets the parameter value at a specified position on an edge or a curve.
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Filename:
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kern/kern_scm/crv_scm.cxx
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Syntax:
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(curve:param edge-or-curve param-pos)
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Arg Types:
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edge-or-curve
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curve | edge
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param-pos
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position
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Returns:
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real
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Errors:
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EDGE with no
CURVE
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Description:
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This extension returns the parameter as a normalized real, ranging from 0 to 1.
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edge-or-curve specifies an edge or a curve.
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param-pos specifies the location to compute the parameter on the
curve.
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Example:
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; curve:param
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; Create a circular edge.
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(define edge1 (edge:circular
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(position 0 0 0) 25))
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;; edge1
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; Determine the parameter value of the curve
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; at a specific position.
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(curve:param edge1 (position 6 6 0))
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;; 0.125
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