Hi, can anyone give me a suggestion ?
For various reasons I have a 3D mesh projected orthoganally into a 2D representation so that it shows the "front" of my object as if it were going to be rendered. I want to work out which of my mass of vertexes represent the hull of the shape. The hull isn't neccessarily convex, but I have the triangle indexes and all the vertexes have been welded, so I know "what connects with what". I need to bear in mind that the vertexes that make up the visible hull of the shape aren't neccessarily connected to each other (i.e. they are not part of the same triangle) since the triangles are 3D projected onto a 2D surface.
I could just render the image onto a surface and use simple edge finding to locate the vertexes, but this seems a low quality approach. I hoped there might be a better solution.
Does anyone have any suggestions ?
Thanks
Phillip