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3d discrete curve

Mauro Corbo's picture
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I need help for following problem: I have 3d curve defined by an arbitrary  array of 3d points in the space ( say GpPnt _3DP[100])
I would know if there is an easy way in OCC to get the tangent and normal  vectors of the 3d discrete curves at 3d points location.
Naturally , the array of points ( defining the curve) is made of "ordered" points along 3d curve length , so the _3DP[0] id the start point of 3d curve and _3DP[n_points-1]  is the end of curve , where n_points is the number of 3d points 
welcome for some C++ code fragment.
Thanks in advance

 

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