Incase I have 3 points define a triangle (x1,y1,z1),(x2,y2,z2),(x3,y3,z3). And 2 points define a ray (xr1,yr1,zr1),(xr2,yr2,zr2). Could you tell me how can I check if that ray go through that triangle and the intersection point if they have? And more, if you could, please show me the best...