Differential D9350 Diff 30392 source/blender/blenkernel/intern/multires_versioning.c

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source/blender/blenkernel/intern/multires_versioning.c

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				/*
				* 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 by Blender Foundation.
				* All rights reserved.
				*/

				/** \file
				* \ingroup bke
				*/

				#include "MEM_guardedalloc.h"

				#include "DNA_mesh_types.h"
				#include "DNA_modifier_types.h"
				#include "DNA_object_types.h"

				#include "BKE_subdiv.h"
				#include "BKE_subdiv_eval.h"

				#include "multires_reshape.h"
				#include "opensubdiv_converter_capi.h"
				#include "subdiv_converter.h"

				static float simple_to_catmull_clark_get_edge_sharpness(
				const OpenSubdiv_Converter *UNUSED(converter), int UNUSED(manifold_edge_index))
				{
				return 10.0f;
				}

				static bool simple_to_catmull_clark_is_infinite_sharp_vertex(
				const OpenSubdiv_Converter *UNUSED(converter), int UNUSED(manifold_vertex_index))
				{
				return true;
				}

				static Subdiv subdiv_for_simple_to_catmull_clark(Object object, MultiresModifierData *mmd)
				{
				SubdivSettings subdiv_settings;
				BKE_multires_subdiv_settings_init(&subdiv_settings, mmd);

				Mesh *base_mesh = object->data;

				OpenSubdiv_Converter converter;
				BKE_subdiv_converter_init_for_mesh(&converter, &subdiv_settings, base_mesh);
				converter.getEdgeSharpness = simple_to_catmull_clark_get_edge_sharpness;
				converter.isInfiniteSharpVertex = simple_to_catmull_clark_is_infinite_sharp_vertex;

				Subdiv *subdiv = BKE_subdiv_new_from_converter(&subdiv_settings, &converter);
				BKE_subdiv_converter_free(&converter);

				if (!BKE_subdiv_eval_begin_from_mesh(subdiv, base_mesh, NULL)) {
				BKE_subdiv_free(subdiv);
				return NULL;
				}

				return subdiv;
				}

				void multires_do_versions_simple_to_catmull_clark(Object object, MultiresModifierData mmd)
				{
				const Mesh *base_mesh = object->data;
				if (base_mesh->totloop == 0) {
				return;
				}

				/* Store the grids displacement in object space against the simple limit surface. */
				{
				Subdiv *subdiv = subdiv_for_simple_to_catmull_clark(object, mmd);
				MultiresReshapeContext reshape_context;
				if (!multires_reshape_context_create_from_subdiv(
				&reshape_context, object, mmd, subdiv, mmd->totlvl)) {
				BKE_subdiv_free(subdiv);
				return;
				}

				multires_reshape_store_original_grids(&reshape_context);
				multires_reshape_assign_final_coords_from_mdisps(&reshape_context);
				multires_reshape_context_free(&reshape_context);

				BKE_subdiv_free(subdiv);
				}

				/* Calculate the new tangent displacement against the new Catmull-Clark limit surface. */
				{
				MultiresReshapeContext reshape_context;
				if (!multires_reshape_context_create_from_modifier(
				&reshape_context, object, mmd, mmd->totlvl)) {
				return;
				}
				multires_reshape_object_grids_to_tangent_displacement(&reshape_context);
				multires_reshape_context_free(&reshape_context);
				}
				}