| Pekka Paalanen | 668ca37 | 2012-01-12 14:30:47 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2008-2011 Kristian Høgsberg |
| Pekka Paalanen | 75b47ec | 2012-01-16 14:27:00 +0200 | [diff] [blame^] | 3 | * Copyright © 2012 Collabora, Ltd. |
| Pekka Paalanen | 668ca37 | 2012-01-12 14:30:47 +0200 | [diff] [blame] | 4 | * |
| 5 | * Permission to use, copy, modify, distribute, and sell this software and |
| 6 | * its documentation for any purpose is hereby granted without fee, provided |
| 7 | * that the above copyright notice appear in all copies and that both that |
| 8 | * copyright notice and this permission notice appear in supporting |
| 9 | * documentation, and that the name of the copyright holders not be used in |
| 10 | * advertising or publicity pertaining to distribution of the software |
| 11 | * without specific, written prior permission. The copyright holders make |
| 12 | * no representations about the suitability of this software for any |
| 13 | * purpose. It is provided "as is" without express or implied warranty. |
| 14 | * |
| 15 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS |
| 16 | * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 17 | * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| 18 | * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER |
| 19 | * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF |
| 20 | * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| 21 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 22 | */ |
| 23 | |
| 24 | #ifndef WESTON_MATRIX_H |
| 25 | #define WESTON_MATRIX_H |
| 26 | |
| 27 | struct weston_matrix { |
| 28 | GLfloat d[16]; |
| 29 | }; |
| 30 | |
| Pekka Paalanen | 75b47ec | 2012-01-16 14:27:00 +0200 | [diff] [blame^] | 31 | struct weston_inverse_matrix { |
| 32 | double LU[16]; /* column-major */ |
| 33 | unsigned p[4]; /* permutation */ |
| 34 | }; |
| 35 | |
| Pekka Paalanen | 668ca37 | 2012-01-12 14:30:47 +0200 | [diff] [blame] | 36 | struct weston_vector { |
| 37 | GLfloat f[4]; |
| 38 | }; |
| 39 | |
| 40 | void |
| 41 | weston_matrix_init(struct weston_matrix *matrix); |
| 42 | void |
| 43 | weston_matrix_multiply(struct weston_matrix *m, const struct weston_matrix *n); |
| 44 | void |
| 45 | weston_matrix_scale(struct weston_matrix *matrix, GLfloat x, GLfloat y, GLfloat z); |
| 46 | void |
| 47 | weston_matrix_translate(struct weston_matrix *matrix, |
| 48 | GLfloat x, GLfloat y, GLfloat z); |
| 49 | void |
| 50 | weston_matrix_transform(struct weston_matrix *matrix, struct weston_vector *v); |
| 51 | |
| Pekka Paalanen | 061b747 | 2012-01-12 15:00:57 +0200 | [diff] [blame] | 52 | int |
| Pekka Paalanen | 75b47ec | 2012-01-16 14:27:00 +0200 | [diff] [blame^] | 53 | weston_matrix_invert(struct weston_inverse_matrix *inverse, |
| Pekka Paalanen | 061b747 | 2012-01-12 15:00:57 +0200 | [diff] [blame] | 54 | const struct weston_matrix *matrix); |
| Pekka Paalanen | 75b47ec | 2012-01-16 14:27:00 +0200 | [diff] [blame^] | 55 | void |
| 56 | weston_matrix_inverse_transform(struct weston_inverse_matrix *inverse, |
| 57 | struct weston_vector *v); |
| Pekka Paalanen | 061b747 | 2012-01-12 15:00:57 +0200 | [diff] [blame] | 58 | |
| Pekka Paalanen | 668ca37 | 2012-01-12 14:30:47 +0200 | [diff] [blame] | 59 | #endif /* WESTON_MATRIX_H */ |