Hey Nicola,
again, you are right. LEGO does not use conditional lines. They work with vertex normals. I implemented an small method that uses the normals to calculate if a line between two triangles should be an optional line or a normal line. Once, I tried to explain the basis for this calculation. Please have a look at: http://forums.ldraw.org/showthread.php?t...959#pid959. Currently, the method does not check if the two triangles are planar.
Rolf
again, you are right. LEGO does not use conditional lines. They work with vertex normals. I implemented an small method that uses the normals to calculate if a line between two triangles should be an optional line or a normal line. Once, I tried to explain the basis for this calculation. Please have a look at: http://forums.ldraw.org/showthread.php?t...959#pid959. Currently, the method does not check if the two triangles are planar.
Rolf