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clip3d - Clips the polygon given in vtx using fixed point math. Allegro game programming library.
#include <allegro.h> int clip3d(int type, fixed min_z, fixed max_z, int vc, const V3D *vtx, V3D *vout, V3D *vtmp, int out);
Fixed point version of clip3d_f(). This function should be used with caution, due to the limited precision of fixed point arithmetic and high chance of rounding errors: the floating point code is better for most situations.
Returns the number of vertices after clipping is done.