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stb_rect_pack: update to 0.11 (minor changes)
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@ -1,4 +1,4 @@
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// stb_rect_pack.h - v0.10 - public domain - rectangle packing
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// stb_rect_pack.h - v0.11 - public domain - rectangle packing
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// Sean Barrett 2014
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//
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// Useful for e.g. packing rectangular textures into an atlas.
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@ -27,11 +27,14 @@
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// Sean Barrett
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// Minor features
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// Martins Mozeiko
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// github:IntellectualKitty
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//
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// Bugfixes / warning fixes
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// Jeremy Jaussaud
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//
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// Version history:
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//
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// 0.11 (2017-03-03) return packing success/fail result
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// 0.10 (2016-10-25) remove cast-away-const to avoid warnings
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// 0.09 (2016-08-27) fix compiler warnings
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// 0.08 (2015-09-13) really fix bug with empty rects (w=0 or h=0)
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@ -43,9 +46,7 @@
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//
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// LICENSE
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//
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// This software is dual-licensed to the public domain and under the following
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// license: you are granted a perpetual, irrevocable license to copy, modify,
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// publish, and distribute this file as you see fit.
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// See end of file for license information.
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//////////////////////////////////////////////////////////////////////////////
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//
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@ -77,7 +78,7 @@ typedef int stbrp_coord;
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typedef unsigned short stbrp_coord;
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#endif
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STBRP_DEF void stbrp_pack_rects (stbrp_context *context, stbrp_rect *rects, int num_rects);
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STBRP_DEF int stbrp_pack_rects (stbrp_context *context, stbrp_rect *rects, int num_rects);
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// Assign packed locations to rectangles. The rectangles are of type
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// 'stbrp_rect' defined below, stored in the array 'rects', and there
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// are 'num_rects' many of them.
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@ -98,6 +99,9 @@ STBRP_DEF void stbrp_pack_rects (stbrp_context *context, stbrp_rect *rects, int
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// arrays will probably produce worse packing results than calling it
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// a single time with the full rectangle array, but the option is
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// available.
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//
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// The function returns 1 if all of the rectangles were successfully
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// packed and 0 otherwise.
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struct stbrp_rect
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{
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@ -520,17 +524,6 @@ static int rect_height_compare(const void *a, const void *b)
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return (p->w > q->w) ? -1 : (p->w < q->w);
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}
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static int rect_width_compare(const void *a, const void *b)
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{
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const stbrp_rect *p = (const stbrp_rect *) a;
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const stbrp_rect *q = (const stbrp_rect *) b;
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if (p->w > q->w)
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return -1;
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if (p->w < q->w)
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return 1;
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return (p->h > q->h) ? -1 : (p->h < q->h);
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}
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static int rect_original_order(const void *a, const void *b)
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{
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const stbrp_rect *p = (const stbrp_rect *) a;
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@ -544,9 +537,9 @@ static int rect_original_order(const void *a, const void *b)
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#define STBRP__MAXVAL 0xffff
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#endif
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STBRP_DEF void stbrp_pack_rects(stbrp_context *context, stbrp_rect *rects, int num_rects)
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STBRP_DEF int stbrp_pack_rects(stbrp_context *context, stbrp_rect *rects, int num_rects)
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{
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int i;
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int i, all_rects_packed = 1;
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// we use the 'was_packed' field internally to allow sorting/unsorting
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for (i=0; i < num_rects; ++i) {
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@ -576,8 +569,56 @@ STBRP_DEF void stbrp_pack_rects(stbrp_context *context, stbrp_rect *rects, int n
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// unsort
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STBRP_SORT(rects, num_rects, sizeof(rects[0]), rect_original_order);
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// set was_packed flags
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for (i=0; i < num_rects; ++i)
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// set was_packed flags and all_rects_packed status
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for (i=0; i < num_rects; ++i) {
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rects[i].was_packed = !(rects[i].x == STBRP__MAXVAL && rects[i].y == STBRP__MAXVAL);
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if (!rects[i].was_packed)
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all_rects_packed = 0;
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}
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// return the all_rects_packed status
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return all_rects_packed;
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}
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#endif
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/*
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------------------------------------------------------------------------------
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This software is available under 2 licenses -- choose whichever you prefer.
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------------------------------------------------------------------------------
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ALTERNATIVE A - MIT License
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Copyright (c) 2017 Sean Barrett
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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of the Software, and to permit persons to whom the Software is furnished to do
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so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN 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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ALTERNATIVE B - Public Domain (www.unlicense.org)
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This is free and unencumbered software released into the public domain.
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Anyone is free to copy, modify, publish, use, compile, sell, or distribute this
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software, either in source code form or as a compiled binary, for any purpose,
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commercial or non-commercial, and by any means.
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In jurisdictions that recognize copyright laws, the author or authors of this
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software dedicate any and all copyright interest in the software to the public
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domain. We make this dedication for the benefit of the public at large and to
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the detriment of our heirs and successors. We intend this dedication to be an
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overt act of relinquishment in perpetuity of all present and future rights to
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this software under copyright law.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS 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 CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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------------------------------------------------------------------------------
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*/
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