Parameterization of any irregular shape

Could any one help me with some existing codes which deal with the parameterization of any irregular shape which is made of a number of triangles? Thanks every body in advance.

This is a very vague question.

Please post specifics of your question here rather than simply requesting help in a forum that is here for the purpose of offering help.

Actually I am trying to refer to some method whether there is a possibility to “inflate” the irregular triangular mesh, so that it becomes closer to a sphere, and parametrize it.I think there may already be some existing methods.