bmo_fill_holes.cc

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/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */

 
#include "bmesh.hh"
#include "bmesh_tools.hh"
 
#include "intern/bmesh_operators_private.hh" /* own include */
 
void bmo_holes_fill_exec(BMesh *bm, BMOperator *op)
{
  BMOperator op_attr;
  const uint sides = BMO_slot_int_get(op->slots_in, "sides");
 
  BM_mesh_elem_hflag_disable_all(bm, BM_EDGE | BM_FACE, BM_ELEM_TAG, false);
  BMO_slot_buffer_hflag_enable(bm, op->slots_in, "edges", BM_EDGE, BM_ELEM_TAG, false);
 
  BM_mesh_edgenet(bm, true, true); /* TODO: sides. */
 
  /* bad - remove faces after as a workaround */
  if (sides != 0) {
    BMOIter siter;
    BMFace *f;
 
    BMO_slot_buffer_from_enabled_hflag(bm, op, op->slots_out, "faces.out", BM_FACE, BM_ELEM_TAG);
    BMO_ITER (f, &siter, op->slots_out, "faces.out", BM_FACE) {
      if (f->len > sides) {
        BM_face_kill(bm, f);
      }
    }
  }
 
  BMO_slot_buffer_from_enabled_hflag(bm, op, op->slots_out, "faces.out", BM_FACE, BM_ELEM_TAG);
 
  /* --- Attribute Fill --- */
  /* may as well since we have the faces already in a buffer */
  BMO_op_initf(bm,
               &op_attr,
               op->flag,
               "face_attribute_fill faces=%S use_normals=%b use_data=%b",
               op,
               "faces.out",
               true,
               true);
 
  BMO_op_exec(bm, &op_attr);
 
  /* check if some faces couldn't be touched */
  if (BMO_slot_buffer_len(op_attr.slots_out, "faces_fail.out")) {
    BMOIter siter;
    BMFace *f;
 
    BMO_ITER (f, &siter, op_attr.slots_out, "faces_fail.out", BM_FACE) {
      BM_face_normal_update(f); /* Normals are zeroed. */
    }
 
    BMO_op_callf(bm, op->flag, "recalc_face_normals faces=%S", &op_attr, "faces_fail.out");
  }
  BMO_op_finish(bm, &op_attr);
}