mirror of
https://gitlab.freedesktop.org/wlroots/wlroots.git
synced 2026-04-14 08:22:25 -04:00
33 lines
1 KiB
C
33 lines
1 KiB
C
#ifndef UTIL_MATRIX_H
|
||
#define UTIL_MATRIX_H
|
||
|
||
#include <wayland-server-protocol.h>
|
||
|
||
struct wlr_box;
|
||
struct wlr_fbox;
|
||
|
||
/** mat ← a × b */
|
||
void matrix_multiply(float mat[static 9], const float a[static 9],
|
||
const float b[static 9]);
|
||
|
||
/** Writes a transformation matrix which applies the specified
|
||
* wl_output_transform to mat */
|
||
void matrix_transform(float mat[static 9], enum wl_output_transform transform);
|
||
|
||
/** Shortcut for the various matrix operations involved in projecting the
|
||
* specified wlr_box onto a given orthographic projection. The result is
|
||
* written to mat, which can be applied to each coordinate of the box to get a
|
||
* new coordinate from [-1,1].
|
||
*/
|
||
void matrix_project_box(float mat[static 9], const struct wlr_box *box);
|
||
|
||
void matrix_project_fbox(float mat[static 9], const struct wlr_fbox *box);
|
||
|
||
/**
|
||
* Writes a 2D orthographic projection matrix to mat of (width, height).
|
||
*
|
||
* Equivalent to glOrtho(0, width, 0, height, 1, -1) with the transform applied.
|
||
*/
|
||
void matrix_projection(float mat[static 9], int width, int height);
|
||
|
||
#endif
|