/* * Copyright © 2008-2011 Kristian Høgsberg * Copyright © 2012 Collabora, Ltd. * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial * portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #ifndef WESTON_MATRIX_H #define WESTON_MATRIX_H #include #include #include #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]; }; /** Arbitrary coordinates in any space */ struct weston_coord { double x; double y; }; /** Coordinates in some weston_buffer (physical pixels) */ struct weston_coord_buffer { struct weston_coord c; }; /** Coordinates in the global compositor space (logical pixels) */ struct weston_coord_global { struct weston_coord c; }; /** surface-local coordinates on a specific surface */ struct weston_coord_surface { struct weston_coord c; const struct weston_surface *coordinate_space_id; }; 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(const struct weston_matrix *matrix, struct weston_vector *v); struct weston_coord weston_matrix_transform_coord(const struct weston_matrix *matrix, struct weston_coord coord); int weston_matrix_invert(struct weston_matrix *inverse, const struct weston_matrix *matrix); bool weston_matrix_needs_filtering(const struct weston_matrix *matrix); bool weston_matrix_to_transform(const struct weston_matrix *mat, enum wl_output_transform *transform); void weston_matrix_init_transform(struct weston_matrix *matrix, enum wl_output_transform transform, int x, int y, int width, int height, int scale); static inline struct weston_coord __attribute__ ((warn_unused_result)) weston_coord_from_fixed(wl_fixed_t x, wl_fixed_t y) { struct weston_coord out; out.x = wl_fixed_to_double(x); out.y = wl_fixed_to_double(y); return out; } static inline struct weston_coord __attribute__ ((warn_unused_result)) weston_coord(double x, double y) { return (struct weston_coord){ .x = x, .y = y }; } static inline struct weston_coord_surface __attribute__ ((warn_unused_result)) weston_coord_surface(double x, double y, const struct weston_surface *surface) { struct weston_coord_surface out; assert(surface); out.c = weston_coord(x, y); out.coordinate_space_id = surface; return out; } static inline struct weston_coord_surface __attribute__ ((warn_unused_result)) weston_coord_surface_from_fixed(wl_fixed_t x, wl_fixed_t y, const struct weston_surface *surface) { struct weston_coord_surface out; assert(surface); out.c.x = wl_fixed_to_double(x); out.c.y = wl_fixed_to_double(y); out.coordinate_space_id = surface; return out; } static inline struct weston_coord __attribute__ ((warn_unused_result)) weston_coord_add(struct weston_coord a, struct weston_coord b) { return weston_coord(a.x + b.x, a.y + b.y); } static inline struct weston_coord __attribute__ ((warn_unused_result)) weston_coord_sub(struct weston_coord a, struct weston_coord b) { return weston_coord(a.x - b.x, a.y - b.y); } #ifdef __cplusplus } #endif #endif /* WESTON_MATRIX_H */