diff options
author | Germano Cavalcante <germano.costa@ig.com.br> | 2021-12-29 01:40:07 +0300 |
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committer | Germano Cavalcante <germano.costa@ig.com.br> | 2021-12-29 02:42:21 +0300 |
commit | 7006d4f0fb7802e4859c1bb7f081aa4b54bb6765 (patch) | |
tree | 686f74a6256d3e5b3b1f6da6de8a8b37e1a36f6f /source | |
parent | 1464eff3753b8db90ec527152734b999ad1ed68a (diff) |
Cleanup: Use indices instead of pointers
This improves code readability.
Take the opportunity and improve the comments too.
Diffstat (limited to 'source')
-rw-r--r-- | source/blender/modifiers/intern/MOD_weld.cc | 47 |
1 files changed, 25 insertions, 22 deletions
diff --git a/source/blender/modifiers/intern/MOD_weld.cc b/source/blender/modifiers/intern/MOD_weld.cc index 95ad1843e5a..097ed26afb3 100644 --- a/source/blender/modifiers/intern/MOD_weld.cc +++ b/source/blender/modifiers/intern/MOD_weld.cc @@ -1693,17 +1693,18 @@ static Mesh *weldModifier_doWeld(WeldModifierData *wmd, Mesh *result = BKE_mesh_new_nomain_from_template( mesh, result_nverts, result_nedges, 0, result_nloops, result_npolys); - /* Vertices */ + /* Vertices. */ + + /* Be careful when editing this array, to avoid new allocations it uses the same buffer as + * #vert_dest_map. This map will be used to adjust the edges, polys and loops. */ + MutableSpan<int> vert_final = vert_dest_map; - int *vert_final = vert_dest_map.data(); - int *index_iter = &vert_final[0]; int dest_index = 0; - for (int i = 0; i < totvert; i++, index_iter++) { + for (int i = 0; i < totvert; i++) { int source_index = i; int count = 0; - while (i < totvert && *index_iter == OUT_OF_CONTEXT) { - *index_iter = dest_index + count; - index_iter++; + while (i < totvert && vert_dest_map[i] == OUT_OF_CONTEXT) { + vert_final[i] = dest_index + count; count++; i++; } @@ -1714,31 +1715,32 @@ static Mesh *weldModifier_doWeld(WeldModifierData *wmd, if (i == totvert) { break; } - if (*index_iter != ELEM_MERGED) { - struct WeldGroup *wgroup = &weld_mesh.vert_groups[*index_iter]; + if (vert_dest_map[i] != ELEM_MERGED) { + struct WeldGroup *wgroup = &weld_mesh.vert_groups[vert_dest_map[i]]; customdata_weld(&mesh->vdata, &result->vdata, &weld_mesh.vert_groups_buffer[wgroup->ofs], wgroup->len, dest_index); - *index_iter = dest_index; + vert_final[i] = dest_index; dest_index++; } } BLI_assert(dest_index == result_nverts); - /* Edges */ + /* Edges. */ + + /* Be careful when editing this array, to avoid new allocations it uses the same buffer as + * #edge_groups_map. This map will be used to adjust the polys and loops. */ + MutableSpan<int> edge_final = weld_mesh.edge_groups_map; - int *edge_final = weld_mesh.edge_groups_map.data(); - index_iter = &edge_final[0]; dest_index = 0; - for (int i = 0; i < totedge; i++, index_iter++) { + for (int i = 0; i < totedge; i++) { int source_index = i; int count = 0; - while (i < totedge && *index_iter == OUT_OF_CONTEXT) { - *index_iter = dest_index + count; - index_iter++; + while (i < totedge && weld_mesh.edge_groups_map[i] == OUT_OF_CONTEXT) { + edge_final[i] = dest_index + count; count++; i++; } @@ -1754,8 +1756,8 @@ static Mesh *weldModifier_doWeld(WeldModifierData *wmd, if (i == totedge) { break; } - if (*index_iter != ELEM_MERGED) { - struct WeldGroupEdge *wegrp = &weld_mesh.edge_groups[*index_iter]; + if (weld_mesh.edge_groups_map[i] != ELEM_MERGED) { + struct WeldGroupEdge *wegrp = &weld_mesh.edge_groups[weld_mesh.edge_groups_map[i]]; customdata_weld(&mesh->edata, &result->edata, &weld_mesh.edge_groups_buffer[wegrp->group.ofs], @@ -1766,14 +1768,14 @@ static Mesh *weldModifier_doWeld(WeldModifierData *wmd, me->v2 = vert_final[wegrp->v2]; me->flag |= ME_LOOSEEDGE; - *index_iter = dest_index; + edge_final[i] = dest_index; dest_index++; } } BLI_assert(dest_index == result_nedges); - /* Polys/Loops */ + /* Polys/Loops. */ MPoly *r_mp = &result->mpoly[0]; MLoop *r_ml = &result->mloop[0]; @@ -1862,7 +1864,8 @@ static Mesh *weldModifier_doWeld(WeldModifierData *wmd, BLI_assert((int)r_i == result_npolys); BLI_assert(loop_cur == result_nloops); - /* is this needed? */ + /* We could only update the normals of the elements in context, but the next modifier can make it + * dirty anyway which would make the work useless. */ BKE_mesh_normals_tag_dirty(result); return result; |