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Diffstat (limited to 'shared/matrix.h')
-rw-r--r-- | shared/matrix.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/shared/matrix.h b/shared/matrix.h new file mode 100644 index 00000000..e5cf636b --- /dev/null +++ b/shared/matrix.h @@ -0,0 +1,82 @@ +/* + * Copyright © 2008-2011 Kristian Høgsberg + * Copyright © 2012 Collabora, Ltd. + * + * Permission to use, copy, modify, distribute, and sell this software and + * its documentation for any purpose is hereby granted without fee, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of the copyright holders not be used in + * advertising or publicity pertaining to distribution of the software + * without specific, written prior permission. The copyright holders make + * no representations about the suitability of this software for any + * purpose. It is provided "as is" without express or implied warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS + * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY + * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER + * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF + * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef WESTON_MATRIX_H +#define WESTON_MATRIX_H + +#ifdef __cplusplus +extern "C" { +#endif + +enum weston_matrix_transform_type { + WESTON_MATRIX_TRANSFORM_TRANSLATE = (1 << 0), + WESTON_MATRIX_TRANSFORM_SCALE = (1 << 1), + WESTON_MATRIX_TRANSFORM_ROTATE = (1 << 2), + WESTON_MATRIX_TRANSFORM_OTHER = (1 << 3), +}; + +struct weston_matrix { + float d[16]; + unsigned int type; +}; + +struct weston_vector { + float f[4]; +}; + +void +weston_matrix_init(struct weston_matrix *matrix); +void +weston_matrix_multiply(struct weston_matrix *m, const struct weston_matrix *n); +void +weston_matrix_scale(struct weston_matrix *matrix, float x, float y, float z); +void +weston_matrix_translate(struct weston_matrix *matrix, + float x, float y, float z); +void +weston_matrix_rotate_xy(struct weston_matrix *matrix, float cos, float sin); +void +weston_matrix_transform(struct weston_matrix *matrix, struct weston_vector *v); + +int +weston_matrix_invert(struct weston_matrix *inverse, + const struct weston_matrix *matrix); + +#ifdef UNIT_TEST +# define MATRIX_TEST_EXPORT WL_EXPORT + +int +matrix_invert(double *A, unsigned *p, const struct weston_matrix *matrix); + +void +inverse_transform(const double *LU, const unsigned *p, float *v); + +#else +# define MATRIX_TEST_EXPORT static +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* WESTON_MATRIX_H */ |