How to calculate volume of 3d convex hull?

Question

Convex hull is defined by a set of planes (point on plane, plane normal). I also know the plane intersections points which form polygons on each face.

How to calculate volume of convex hull?

Answer 1

Since you have the plane intersections too, It is equivalent to the volume of a polyhedron. (the fact that yours is convex doesn't matter).

http://en.wikipedia.org/wiki/Polyhedron#Volume