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Action:
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Gets the start angle of a circular curve or edge or an elliptical curve or edge.
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Filename:
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kern/kern_scm/crv_scm.cxx
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Syntax:
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(arc:start-angle arc)
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Arg Types:
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arc
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elliptical-curve | elliptical-edge
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Returns:
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real
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Description:
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This extension returns the start angle in degrees. Circular curves and edges are subsets of elliptical curves and edges.
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arc specifies an elliptical-curve or an elliptical-edge.
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Example:
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; arc:start-angle
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; Create a circular edge.
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(define arc1
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(edge:circular
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(position 15 25 0) 25 0 185))
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;; arc1
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; Get the start angle of the edge.
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(arc:start-angle arc1)
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;; 0
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; Set the start angle of the edge.
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(define arc (arc:set-start arc1 45))
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;; arc
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(arc:start-angle arc1)
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;; 45
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