kc3-lang/harfbuzz/src/hb-subset-instancer-iup.hh

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• Hash : c03e1e0a
  Author :
  Date : 2025-09-16T18:15:51
  

  [iup] Use a bit-page instead of bit-set
  
  Reject large contours instead.
  

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• src/hb-subset-instancer-iup.hh

• /*
   * Copyright © 2024  Google, Inc.
   *
   *  This is part of HarfBuzz, a text shaping library.
   *
   * Permission is hereby granted, without written agreement and without
   * license or royalty fees, to use, copy, modify, and distribute this
   * software and its documentation for any purpose, provided that the
   * above copyright notice and the following two paragraphs appear in
   * all copies of this software.
   *
   * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
   * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
   * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
   * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
   * DAMAGE.
   *
   * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
   * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
   * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
   * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
   * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
   */
  
  #ifndef HB_SUBSET_INSTANCER_IUP_HH
  #define HB_SUBSET_INSTANCER_IUP_HH
  
  #include "hb-subset-plan.hh"
  
  struct iup_scratch_t
  {
    hb_vector_t<unsigned> end_points;
    hb_vector_t<double> interp_x_deltas;
    hb_vector_t<double> interp_y_deltas;
    hb_vector_t<unsigned> costs;
    hb_vector_t<int> chain;
    hb_vector_t<bool> rot_indices;
    hb_vector_t<int> rot_x_deltas;
    hb_vector_t<int> rot_y_deltas;
    contour_point_vector_t rot_points;
  };
  
  /* given contour points and deltas, optimize a set of referenced points within error
   * tolerance. Returns optimized referenced point indices */
  HB_INTERNAL bool iup_delta_optimize (const contour_point_vector_t& contour_points,
                                       const hb_vector_t<int>& x_deltas,
                                       const hb_vector_t<int>& y_deltas,
                                       hb_vector_t<bool>& opt_indices, /* OUT */
  				     iup_scratch_t &scratch,
                                       double tolerance = 0.0);
  
  #endif /* HB_SUBSET_INSTANCER_IUP_HH */
  

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