CoglMatrixStacknew

Allocates a new CoglMatrixStack that can be used to build up transformations relating to objects in a scenegraph like hierarchy. (See the description of CoglMatrixStack and CoglMatrixEntry for more details of what a matrix stack is best suited for)

When a CoglMatrixStack is first allocated it is conceptually positioned at the root of your scenegraph hierarchy. As you traverse your scenegraph then you should call cogl_matrix_stack_push() whenever you move down a level and cogl_matrix_stack_pop() whenever you move back up a level towards the root.

Once you have allocated a CoglMatrixStack you can get a reference to the current transformation for the current position in the hierarchy by calling cogl_matrix_stack_get_entry().

Once you have allocated a CoglMatrixStack you can apply operations such as rotate, scale and translate to modify the current transform for the current position in the hierarchy by calling cogl_matrix_stack_rotate(), cogl_matrix_stack_scale() and cogl_matrix_stack_translate().