1 /**************************************************************************
3 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
32 #include "pipe/p_compiler.h"
39 /* Do two rectangles intersect?
42 u_rect_test_intersection(const struct u_rect *a,
43 const struct u_rect *b)
45 return (!(a->x1 < b->x0 ||
51 /* Find the intersection of two rectangles known to intersect.
54 u_rect_find_intersection(const struct u_rect *a,
57 /* Caller should verify intersection exists before calling.
59 if (b->x0 < a->x0) b->x0 = a->x0;
60 if (b->x1 > a->x1) b->x1 = a->x1;
61 if (b->y0 < a->y0) b->y0 = a->y0;
62 if (b->y1 > a->y1) b->y1 = a->y1;
67 u_rect_possible_intersection(const struct u_rect *a,
70 if (u_rect_test_intersection(a,b)) {
71 u_rect_find_intersection(a,b);
74 b->x0 = b->x1 = b->y0 = b->y1 = 0;
78 #include "pipe/p_format.h"
79 #include "util/u_pack_color.h"
83 /**********************************************************************
84 * Pipe copy/fill rect helpers.
87 /* These really should move to a different file:
89 #include "pipe/p_format.h"
92 util_copy_rect(ubyte * dst, enum pipe_format format,
93 unsigned dst_stride, unsigned dst_x, unsigned dst_y,
94 unsigned width, unsigned height, const ubyte * src,
95 int src_stride, unsigned src_x, unsigned src_y);
98 util_fill_rect(ubyte * dst, enum pipe_format format,
99 unsigned dst_stride, unsigned dst_x, unsigned dst_y,
100 unsigned width, unsigned height, union util_color *uc);
103 #endif /* U_RECT_H */