DWG to XYZ AutoLisp source

The program is useful for surveyors to recover survey points from DWG files. LINE, POLYLINE, POINT and BLOCK entities will be converted into an XYZ file of points.

Load XYZ and 4D files AutoLisp source code

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

B spline control polygon and interpolated contour lines AutoLisp source