3a61976af7
This function doesn't need to change the matrix, so we might as well enforce that. Signed-off-by: Derek Foreman <derek.foreman@collabora.com>
74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
/*
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* Copyright © 2008-2011 Kristian Høgsberg
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* Copyright © 2012 Collabora, Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef WESTON_MATRIX_H
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#define WESTON_MATRIX_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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enum weston_matrix_transform_type {
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WESTON_MATRIX_TRANSFORM_TRANSLATE = (1 << 0),
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WESTON_MATRIX_TRANSFORM_SCALE = (1 << 1),
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WESTON_MATRIX_TRANSFORM_ROTATE = (1 << 2),
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WESTON_MATRIX_TRANSFORM_OTHER = (1 << 3),
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};
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struct weston_matrix {
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float d[16];
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unsigned int type;
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};
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struct weston_vector {
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float f[4];
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};
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void
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weston_matrix_init(struct weston_matrix *matrix);
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void
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weston_matrix_multiply(struct weston_matrix *m, const struct weston_matrix *n);
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void
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weston_matrix_scale(struct weston_matrix *matrix, float x, float y, float z);
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void
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weston_matrix_translate(struct weston_matrix *matrix,
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float x, float y, float z);
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void
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weston_matrix_rotate_xy(struct weston_matrix *matrix, float cos, float sin);
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void
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weston_matrix_transform(const struct weston_matrix *matrix,
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struct weston_vector *v);
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int
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weston_matrix_invert(struct weston_matrix *inverse,
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const struct weston_matrix *matrix);
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#ifdef __cplusplus
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}
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#endif
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#endif /* WESTON_MATRIX_H */
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