Matlab: Orthogonal Projection

IlyaZ

Hey folks,

I'm trying to make a matlab script which projects a tetrahedron on a plane.

I manage to display the plane, the tetrahedron and the orthogonal projection of the edges of the tetrahedron on the plane. But I don't know how to shade or fill the space of the projection.

Also how do I change the color of the plane? The multicoloring is annoying in this case.

I read that it's possible to use fill3 or patch. But I don't get how those two functions work.

I've got 4 coords in a plane and want to fill/shade up the space they "cover". How do I do?

Thanks in advance,
IlyaZ