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Action:
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Gets the length of 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:length edge-or-curve [start] [end])
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Arg Types:
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edge-or-curve
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curve | edge
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start
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real
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end
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real
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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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edge-or-curve specifies an edge or a curve.
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start is a start parameter.
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end is an end parameter.
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Note
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If the parameter values for
start and
end are outside of 0 and 1, the curve is extrapolate. Spline curves cannot be reliably evaluated for parametric values outside of the interval 0 and 1.
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Example:
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; curve:length
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; Create a circular edge.
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(define edge1
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(edge:circular (position 0 0 0)
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35 5 205))
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;; edge1
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; Determine the length of the edge.
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(curve:length edge1)
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;; 122.173047639603
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