Intersect 2 3DFACE and contour lines AutoLisp source code
It is an AutoLisp function for the intersection of 2 triangular 3DFACE entities. Function call (setq ls (sitt p1 p2 p3 p4 p5 p6)) p1 p2 p3 are the 3D points of the first triangle, p4 p5 p6 are the points of triangle 2. ls is (list pint1 pint2), i.e. the list of 2 points that define the inter
added by rcad
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