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Lines Matching defs:dx0

508             float prevt = 0, dx0 = b.x - a.x, dy0 = b.y - a.y;
509             if( fabs(dx0) + fabs(dy0) < FLT_EPSILON )
515                 float t = ((c.x - a.x)*dx0 + (c.y - a.y)*dy0)/(dx0*dx0 + dy0*dy0);