95 lines
2.8 KiB
C++
95 lines
2.8 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_modifier_types.h"
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#include "DNA_object_types.h"
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#include "BKE_subdiv.hh"
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#include "BKE_subdiv_eval.hh"
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#include "multires_reshape.hh"
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#include "opensubdiv_converter_capi.h"
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#include "subdiv_converter.hh"
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static float simple_to_catmull_clark_get_edge_sharpness(const OpenSubdiv_Converter * /*converter*/,
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int /*manifold_edge_index*/)
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{
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return 10.0f;
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}
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static bool simple_to_catmull_clark_is_infinite_sharp_vertex(
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const OpenSubdiv_Converter * /*converter*/, int /*manifold_vertex_index*/)
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{
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return true;
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}
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static Subdiv *subdiv_for_simple_to_catmull_clark(Object *object, MultiresModifierData *mmd)
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{
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SubdivSettings subdiv_settings;
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BKE_multires_subdiv_settings_init(&subdiv_settings, mmd);
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const Mesh *base_mesh = static_cast<const Mesh *>(object->data);
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OpenSubdiv_Converter converter;
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BKE_subdiv_converter_init_for_mesh(&converter, &subdiv_settings, base_mesh);
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converter.getEdgeSharpness = simple_to_catmull_clark_get_edge_sharpness;
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converter.isInfiniteSharpVertex = simple_to_catmull_clark_is_infinite_sharp_vertex;
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Subdiv *subdiv = BKE_subdiv_new_from_converter(&subdiv_settings, &converter);
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BKE_subdiv_converter_free(&converter);
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if (!BKE_subdiv_eval_begin_from_mesh(
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subdiv, base_mesh, nullptr, SUBDIV_EVALUATOR_TYPE_CPU, nullptr))
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{
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BKE_subdiv_free(subdiv);
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return nullptr;
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}
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return subdiv;
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}
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void multires_do_versions_simple_to_catmull_clark(Object *object, MultiresModifierData *mmd)
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{
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const Mesh *base_mesh = static_cast<const Mesh *>(object->data);
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if (base_mesh->totloop == 0) {
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return;
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}
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/* Store the grids displacement in object space against the simple limit surface. */
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{
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Subdiv *subdiv = subdiv_for_simple_to_catmull_clark(object, mmd);
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MultiresReshapeContext reshape_context;
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if (!multires_reshape_context_create_from_subdiv(
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&reshape_context, object, mmd, subdiv, mmd->totlvl))
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{
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BKE_subdiv_free(subdiv);
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return;
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}
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multires_reshape_store_original_grids(&reshape_context);
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multires_reshape_assign_final_coords_from_mdisps(&reshape_context);
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multires_reshape_context_free(&reshape_context);
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BKE_subdiv_free(subdiv);
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}
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/* Calculate the new tangent displacement against the new Catmull-Clark limit surface. */
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{
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MultiresReshapeContext reshape_context;
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if (!multires_reshape_context_create_from_modifier(&reshape_context, object, mmd, mmd->totlvl))
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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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}
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