Method sub

extlibs/soloud/src/core/soloud_core_3d.cpp:73–80

		}
		
		vec3 sub(vec3 a)
		{
			vec3 r;
			r.mX = mX - a.mX;
			r.mY = mY - a.mY;
			r.mZ = mZ - a.mZ;
			return r;
		}

		vec3 cross(vec3 a)
		{