compute
Computes projection matrix using provided pinhole camera, viewport size expressed in pixels, near and far planes and field of view.
The viewport is the surface where the scene is rendered. OpenGL internally normalizes viewport coordinates from -1.0 to 1.0, but the hardware needs to know the actual size of the surface expressed in pixels.
Near and far planes define the region of the 3D space that is actually drawn. Any vertex being at a depth closer to the camera than the near plane, or any vertex being at a depth further from the camera than the far plane, is ignored and not drawn.
The field of view defines how wide is the region of the visible space. It is closely related to the focal length of the pinhole camera intrinsic parameters, and related to the amount of zoom of the scene.
Parameters
pinhole camera.
width of viewport expressed in pixels.
height of viewport expressed in pixels.
near plane defining the closest visible vertices.
far plane defining the furthest visible vertices.
16-length array that will store the resulting matrix.
Computes projection matrix using provided intrinsic pinhole camera parameters, viewport size expressed in pixels, near and far planes and field of view.
The viewport is the surface where the scene is rendered. OpenGL internally normalizes viewport coordinates from -1.0 to 1.0, but the hardware needs to know the actual size of the surface expressed in pixels.
Near and far planes define the region of the 3D space that is actually drawn. Any vertex being at a depth closer to the camera than the near plane, or any vertex being at a depth further from the camera than the far plane, is ignored and not drawn.
The field of view defines how wide is the region of the visible space. It is closely related to the focal length of the pinhole camera intrinsic parameters, and related to the amount of zoom of the scene.
Parameters
intrinsic pinhole camera parameters.
width of viewport expressed in pixels.
height of viewport expressed in pixels.
near plane defining the closest visible vertices.
far plane defining the furthest visible vertices.
16-length array that will store the resulting matrix.