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Action:
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Gets the start position of an edge or 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:start-pos edge-or-curve)
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Arg Types:
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edge-or-curve
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curve | edge
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Returns:
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position
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Errors:
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EDGE with no
CURVE
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Description:
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Returns the start position of an edge or curve.
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edge-or-curve specifies an edge or a curve.
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Example:
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; curve:start-pos
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; Create circular edge 1.
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(define edge1
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(edge:circular
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(position 0 0 0) 25 0 185))
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;; edge1
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; Determine circular edges 1's start position.
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(curve:start-pos edge1)
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;; #[position 25 0 0]
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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 5 10 10) 45 15 205))
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;; edge2
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; Determine circular edge 2's start position.
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(curve:start-pos edge2)
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;; #[position 48.4666621830081 21.6468570296134 10]
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