e955c94ed3
Listing the "Blender Foundation" as copyright holder implied the Blender Foundation holds copyright to files which may include work from many developers. While keeping copyright on headers makes sense for isolated libraries, Blender's own code may be refactored or moved between files in a way that makes the per file copyright holders less meaningful. Copyright references to the "Blender Foundation" have been replaced with "Blender Authors", with the exception of `./extern/` since these this contains libraries which are more isolated, any changed to license headers there can be handled on a case-by-case basis. Some directories in `./intern/` have also been excluded: - `./intern/cycles/` it's own `AUTHORS` file is planned. - `./intern/opensubdiv/`. An "AUTHORS" file has been added, using the chromium projects authors file as a template. Design task: #110784 Ref !110783.
97 lines
3.1 KiB
C++
97 lines
3.1 KiB
C++
/* SPDX-FileCopyrightText: 2020 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup bke
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*/
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#include "MEM_guardedalloc.h"
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#include "DNA_mesh_types.h"
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#include "DNA_meshdata_types.h"
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#include "DNA_modifier_types.h"
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#include "DNA_scene_types.h"
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#include "BKE_customdata.h"
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#include "BKE_lib_id.h"
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#include "BKE_mesh.hh"
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#include "BKE_mesh_runtime.hh"
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#include "BKE_modifier.h"
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#include "BKE_multires.hh"
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#include "BKE_subdiv.hh"
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#include "BKE_subsurf.hh"
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#include "BLI_math_vector.h"
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#include "DEG_depsgraph_query.h"
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#include "multires_reshape.hh"
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static void multires_subdivide_create_object_space_linear_grids(Mesh *mesh)
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{
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using namespace blender;
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using namespace blender::bke;
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const Span<float3> positions = mesh->vert_positions();
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const blender::OffsetIndices faces = mesh->faces();
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const blender::Span<int> corner_verts = mesh->corner_verts();
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MDisps *mdisps = static_cast<MDisps *>(
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CustomData_get_layer_for_write(&mesh->loop_data, CD_MDISPS, mesh->totloop));
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for (const int p : faces.index_range()) {
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const blender::IndexRange face = faces[p];
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const float3 face_center = mesh::face_center_calc(positions, corner_verts.slice(face));
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for (int l = 0; l < face.size(); l++) {
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const int loop_index = face[l];
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float(*disps)[3] = mdisps[loop_index].disps;
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mdisps[loop_index].totdisp = 4;
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mdisps[loop_index].level = 1;
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int prev_loop_index = l - 1 >= 0 ? loop_index - 1 : loop_index + face.size() - 1;
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int next_loop_index = l + 1 < face.size() ? loop_index + 1 : face.start();
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const int vert = corner_verts[loop_index];
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const int vert_next = corner_verts[next_loop_index];
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const int vert_prev = corner_verts[prev_loop_index];
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copy_v3_v3(disps[0], face_center);
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mid_v3_v3v3(disps[1], positions[vert], positions[vert_next]);
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mid_v3_v3v3(disps[2], positions[vert], positions[vert_prev]);
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copy_v3_v3(disps[3], positions[vert]);
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}
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}
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}
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void multires_subdivide_create_tangent_displacement_linear_grids(Object *object,
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MultiresModifierData *mmd)
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{
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Mesh *coarse_mesh = static_cast<Mesh *>(object->data);
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multires_force_sculpt_rebuild(object);
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MultiresReshapeContext reshape_context;
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const int new_top_level = mmd->totlvl + 1;
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const bool has_mdisps = CustomData_has_layer(&coarse_mesh->loop_data, CD_MDISPS);
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if (!has_mdisps) {
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CustomData_add_layer(&coarse_mesh->loop_data, CD_MDISPS, CD_SET_DEFAULT, coarse_mesh->totloop);
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}
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if (new_top_level == 1) {
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/* No MDISPS. Create new grids for level 1 using the edges mid point and face centers. */
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multires_reshape_ensure_grids(coarse_mesh, 1);
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multires_subdivide_create_object_space_linear_grids(coarse_mesh);
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}
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/* Convert the new grids to tangent displacement. */
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multires_set_tot_level(object, mmd, new_top_level);
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if (!multires_reshape_context_create_from_modifier(&reshape_context, object, mmd, new_top_level))
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{
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return;
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}
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multires_reshape_object_grids_to_tangent_displacement(&reshape_context);
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multires_reshape_context_free(&reshape_context);
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}
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