Description For the specified curve and u-parameter, returns point (x,y,z) and the vector (a,b,c) tangent to the curve at that point. The length of vector (a,b,c) is proportional to the derivative of the curve at point (x,y,z). The returned values are in the coordinate system of the curve.
Syntax success = CurveEval( n, u, x, y, z, a, b, c )
Parameters success (Boolean) Returns True if curve is evaluated.
n As Long Node number of curve.
u As Double U-parameter of curve
x As Double X coordinate of point specified by u parameter.
y As Double Y coordinate of point specified by u parameter.
z As Double Z coordinate of point specified by u parameter.
a As Double X-component of vector tangent to curve at point specified by u parameter.
b As Double Y-component of vector tangent to curve at point specified by u parameter.
c As Double Z-component of vector tangent to curve at point specified by u parameter.
See Also
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