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Diffstat (limited to 'source/blender/blenkernel/intern/multires_reshape.c')
| -rw-r--r-- | source/blender/blenkernel/intern/multires_reshape.c | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/multires_reshape.c b/source/blender/blenkernel/intern/multires_reshape.c new file mode 100644 index 00000000000..82f6e70692b --- /dev/null +++ b/source/blender/blenkernel/intern/multires_reshape.c @@ -0,0 +1,233 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2020 Blender Foundation. + * All rights reserved. + */ + +/** \file + * \ingroup bke + */ + +#include "MEM_guardedalloc.h" + +#include "DNA_mesh_types.h" +#include "DNA_meshdata_types.h" +#include "DNA_modifier_types.h" +#include "DNA_scene_types.h" + +#include "BLI_math_vector.h" + +#include "BKE_customdata.h" +#include "BKE_lib_id.h" +#include "BKE_mesh.h" +#include "BKE_mesh_runtime.h" +#include "BKE_modifier.h" +#include "BKE_multires.h" +#include "BKE_subdiv.h" + +#include "DEG_depsgraph_query.h" + +#include "multires_reshape.h" + +/* ================================================================================================ + * Reshape from object. + */ + +bool multiresModifier_reshapeFromVertcos(struct Depsgraph *depsgraph, + struct Object *object, + struct MultiresModifierData *mmd, + const float (*vert_coords)[3], + const int num_vert_coords) +{ + MultiresReshapeContext reshape_context; + if (!multires_reshape_context_create_from_object(&reshape_context, depsgraph, object, mmd)) { + return false; + } + multires_reshape_store_original_grids(&reshape_context); + multires_reshape_ensure_grids(object->data, reshape_context.top.level); + if (!multires_reshape_assign_final_coords_from_vertcos( + &reshape_context, vert_coords, num_vert_coords)) { + multires_reshape_context_free(&reshape_context); + return false; + } + multires_reshape_smooth_object_grids_with_details(&reshape_context); + multires_reshape_object_grids_to_tangent_displacement(&reshape_context); + multires_reshape_context_free(&reshape_context); + return true; +} + +/* Returns truth on success, false otherwise. + * + * This function might fail in cases like source and destination not having + * matched amount of vertices. */ +bool multiresModifier_reshapeFromObject(struct Depsgraph *depsgraph, + struct MultiresModifierData *mmd, + struct Object *dst, + struct Object *src) +{ + struct Scene *scene_eval = DEG_get_evaluated_scene(depsgraph); + struct Object *src_eval = DEG_get_evaluated_object(depsgraph, src); + Mesh *src_mesh_eval = mesh_get_eval_final(depsgraph, scene_eval, src_eval, &CD_MASK_BAREMESH); + + int num_deformed_verts; + float(*deformed_verts)[3] = BKE_mesh_vert_coords_alloc(src_mesh_eval, &num_deformed_verts); + + const bool result = multiresModifier_reshapeFromVertcos( + depsgraph, dst, mmd, deformed_verts, num_deformed_verts); + + MEM_freeN(deformed_verts); + + return result; +} + +/* ================================================================================================ + * Reshape from modifier. + */ + +bool multiresModifier_reshapeFromDeformModifier(struct Depsgraph *depsgraph, + struct Object *object, + struct MultiresModifierData *mmd, + struct ModifierData *deform_md) +{ + MultiresModifierData highest_mmd = *mmd; + highest_mmd.sculptlvl = highest_mmd.totlvl; + highest_mmd.lvl = highest_mmd.totlvl; + highest_mmd.renderlvl = highest_mmd.totlvl; + + Scene *scene_eval = DEG_get_evaluated_scene(depsgraph); + + /* Create mesh for the multires, ignoring any further modifiers (leading + * deformation modifiers will be applied though). */ + Mesh *multires_mesh = BKE_multires_create_mesh(depsgraph, scene_eval, &highest_mmd, object); + int num_deformed_verts; + float(*deformed_verts)[3] = BKE_mesh_vert_coords_alloc(multires_mesh, &num_deformed_verts); + + /* Apply deformation modifier on the multires, */ + const ModifierEvalContext modifier_ctx = { + .depsgraph = depsgraph, + .object = object, + .flag = MOD_APPLY_USECACHE | MOD_APPLY_IGNORE_SIMPLIFY, + }; + modwrap_deformVerts( + deform_md, &modifier_ctx, multires_mesh, deformed_verts, multires_mesh->totvert); + BKE_id_free(NULL, multires_mesh); + + /* Reshaping */ + bool result = multiresModifier_reshapeFromVertcos( + depsgraph, object, &highest_mmd, deformed_verts, num_deformed_verts); + + /* Cleanup */ + MEM_freeN(deformed_verts); + + return result; +} + +/* ================================================================================================ + * Reshape from grids. + */ + +bool multiresModifier_reshapeFromCCG(const int tot_level, + Mesh *coarse_mesh, + struct SubdivCCG *subdiv_ccg) +{ + MultiresReshapeContext reshape_context; + if (!multires_reshape_context_create_from_ccg( + &reshape_context, subdiv_ccg, coarse_mesh, tot_level)) { + return false; + } + multires_reshape_store_original_grids(&reshape_context); + multires_reshape_ensure_grids(coarse_mesh, reshape_context.top.level); + if (!multires_reshape_assign_final_coords_from_ccg(&reshape_context, subdiv_ccg)) { + multires_reshape_context_free(&reshape_context); + return false; + } + multires_reshape_smooth_object_grids_with_details(&reshape_context); + multires_reshape_object_grids_to_tangent_displacement(&reshape_context); + multires_reshape_context_free(&reshape_context); + return true; +} + +/* ================================================================================================ + * Subdivision. + */ + +void multiresModifier_subdivide(Object *object, MultiresModifierData *mmd) +{ + const int top_level = mmd->totlvl + 1; + multiresModifier_subdivide_to_level(object, mmd, top_level); +} + +void multiresModifier_subdivide_to_level(struct Object *object, + struct MultiresModifierData *mmd, + const int top_level) +{ + if (top_level <= mmd->totlvl) { + return; + } + + Mesh *coarse_mesh = object->data; + MultiresReshapeContext reshape_context; + + /* There was no multires at all, all displacement is at 0. Can simply make sure all mdisps grids + * are allocated at a proper level and return. */ + const bool has_mdisps = CustomData_has_layer(&coarse_mesh->ldata, CD_MDISPS); + if (!has_mdisps) { + CustomData_add_layer(&coarse_mesh->ldata, CD_MDISPS, CD_CALLOC, NULL, coarse_mesh->totloop); + } + if (!has_mdisps || top_level == 1) { + multires_reshape_ensure_grids(coarse_mesh, top_level); + multires_set_tot_level(object, mmd, top_level); + return; + } + + multires_flush_sculpt_updates(object); + + if (!multires_reshape_context_create_from_subdivide(&reshape_context, object, mmd, top_level)) { + return; + } + multires_reshape_store_original_grids(&reshape_context); + multires_reshape_ensure_grids(coarse_mesh, reshape_context.top.level); + multires_reshape_assign_final_coords_from_orig_mdisps(&reshape_context); + multires_reshape_smooth_object_grids(&reshape_context); + multires_reshape_object_grids_to_tangent_displacement(&reshape_context); + multires_reshape_context_free(&reshape_context); + + multires_set_tot_level(object, mmd, top_level); +} + +/* ================================================================================================ + * Apply base. + */ + +void multiresModifier_base_apply(struct Depsgraph *depsgraph, + Object *object, + MultiresModifierData *mmd) +{ + multires_force_sculpt_rebuild(object); + + MultiresReshapeContext reshape_context; + if (!multires_reshape_context_create_from_object(&reshape_context, depsgraph, object, mmd)) { + return; + } + + multires_reshape_assign_final_coords_from_mdisps(&reshape_context); + multires_reshape_apply_base_update_mesh_coords(&reshape_context); + multires_reshape_apply_base_refit_base_mesh(&reshape_context); + multires_reshape_apply_base_refine_subdiv(&reshape_context); + multires_reshape_object_grids_to_tangent_displacement(&reshape_context); + + multires_reshape_context_free(&reshape_context); +} |