1 /*
2 * This program is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU General Public License
4 * as published by the Free Software Foundation; either version 2
5 * of the License, or (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software Foundation,
14 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
15 *
16 * The Original Code is Copyright (C) 2020 Blender Foundation.
17 * All rights reserved.
18 */
19
20 /** \file
21 * \ingroup bke
22 */
23
24 #include "multires_reshape.h"
25
26 #include <string.h>
27
28 #include "BLI_utildefines.h"
29
30 #include "BKE_ccg.h"
31 #include "BKE_subdiv_ccg.h"
32
multires_reshape_assign_final_coords_from_ccg(const MultiresReshapeContext * reshape_context,struct SubdivCCG * subdiv_ccg)33 bool multires_reshape_assign_final_coords_from_ccg(const MultiresReshapeContext *reshape_context,
34 struct SubdivCCG *subdiv_ccg)
35 {
36 CCGKey reshape_level_key;
37 BKE_subdiv_ccg_key(&reshape_level_key, subdiv_ccg, reshape_context->reshape.level);
38
39 const int reshape_grid_size = reshape_context->reshape.grid_size;
40 const float reshape_grid_size_1_inv = 1.0f / (((float)reshape_grid_size) - 1.0f);
41
42 int num_grids = subdiv_ccg->num_grids;
43 for (int grid_index = 0; grid_index < num_grids; ++grid_index) {
44 CCGElem *ccg_grid = subdiv_ccg->grids[grid_index];
45 for (int y = 0; y < reshape_grid_size; ++y) {
46 const float v = (float)y * reshape_grid_size_1_inv;
47 for (int x = 0; x < reshape_grid_size; ++x) {
48 const float u = (float)x * reshape_grid_size_1_inv;
49
50 GridCoord grid_coord;
51 grid_coord.grid_index = grid_index;
52 grid_coord.u = u;
53 grid_coord.v = v;
54
55 ReshapeGridElement grid_element = multires_reshape_grid_element_for_grid_coord(
56 reshape_context, &grid_coord);
57
58 BLI_assert(grid_element.displacement != NULL);
59 memcpy(grid_element.displacement,
60 CCG_grid_elem_co(&reshape_level_key, ccg_grid, x, y),
61 sizeof(float[3]));
62
63 if (reshape_level_key.has_mask) {
64 BLI_assert(grid_element.mask != NULL);
65 *grid_element.mask = *CCG_grid_elem_mask(&reshape_level_key, ccg_grid, x, y);
66 }
67 }
68 }
69 }
70
71 return true;
72 }
73