view_2d_in_frustum

Description:

public void view_2d_in_frustum (float left, float right, float bottom, float top, float z_near, float z_2d, float width_2d, float height_2d)

Multiplies this by a view transform that maps the 2D coordinates (0,0) top left and (width_2d,height_2d) bottom right the full viewport size.

Geometry at a depth of 0 will now lie on this 2D plane.

Note: this doesn't multiply the matrix by any projection matrix, but it assumes you have a perspective projection as defined by passing the corresponding arguments to frustum.

Toolkits such as Clutter that mix 2D and 3D drawing can use this to create a 2D coordinate system within a 3D perspective projected view frustum.

Parameters:

this	A 4x4 transformation matrix
left	coord of left vertical clipping plane
right	coord of right vertical clipping plane
bottom	coord of bottom horizontal clipping plane
top	coord of top horizontal clipping plane
z_near	The distance to the near clip plane. Never pass 0 and always pass a positive number.
z_2d	The distance to the 2D plane. (Should always be positive and be between `z_near` and the z_far value that was passed to frustum)
width_2d	The width of the 2D coordinate system
height_2d	The height of the 2D coordinate system