hb-subset-instancer-iup.hh (2089B)
1 /* 2 * Copyright © 2024 Google, Inc. 3 * 4 * This is part of HarfBuzz, a text shaping library. 5 * 6 * Permission is hereby granted, without written agreement and without 7 * license or royalty fees, to use, copy, modify, and distribute this 8 * software and its documentation for any purpose, provided that the 9 * above copyright notice and the following two paragraphs appear in 10 * all copies of this software. 11 * 12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 16 * DAMAGE. 17 * 18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 23 */ 24 25 #ifndef HB_SUBSET_INSTANCER_IUP_HH 26 #define HB_SUBSET_INSTANCER_IUP_HH 27 28 #include "hb-subset-plan.hh" 29 30 struct iup_scratch_t 31 { 32 hb_vector_t<unsigned> end_points; 33 hb_vector_t<double> interp_x_deltas; 34 hb_vector_t<double> interp_y_deltas; 35 hb_vector_t<unsigned> costs; 36 hb_vector_t<int> chain; 37 hb_vector_t<bool> rot_indices; 38 hb_vector_t<int> rot_x_deltas; 39 hb_vector_t<int> rot_y_deltas; 40 contour_point_vector_t rot_points; 41 }; 42 43 /* given contour points and deltas, optimize a set of referenced points within error 44 * tolerance. Returns optimized referenced point indices */ 45 HB_INTERNAL bool iup_delta_optimize (const contour_point_vector_t& contour_points, 46 const hb_vector_t<int>& x_deltas, 47 const hb_vector_t<int>& y_deltas, 48 hb_vector_t<bool>& opt_indices, /* OUT */ 49 iup_scratch_t &scratch, 50 double tolerance = 0.0); 51 52 #endif /* HB_SUBSET_INSTANCER_IUP_HH */