Campbell Barton
8a1860bd9a
Support calculating face normals when tessellating. When this is done before updating vertex normals it gives ~20% performance improvement. Now vertex normal calculation only needs to perform a single pass on the mesh vertices when called after tessellation. Extended versions of normal & looptri update functions have been added: - BM_mesh_calc_tessellation_ex - BM_mesh_normals_update_ex Most callers don't need to be aware of this detail by using: - BKE_editmesh_looptri_and_normals_calc - BKE_editmesh_looptri_and_normals_calc_with_partial - EDBM_update also takes advantage of this, where calling EDBM_update with calc_looptri & calc_normals enabled uses the faster normal updating logic.
75 lines
3.1 KiB
C++
75 lines
3.1 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#pragma once
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/** \file
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* \ingroup bmesh
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*/
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#include "bmesh_class.h"
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struct BMeshNormalsUpdate_Params {
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/**
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* When calculating tessellation as well as normals, tessellate & calculate face normals
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* for improved performance. See #BMeshCalcTessellation_Params
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*/
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bool face_normals;
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};
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void BM_mesh_normals_update_ex(BMesh *bm, const struct BMeshNormalsUpdate_Params *param);
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void BM_mesh_normals_update(BMesh *bm);
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void BM_mesh_normals_update_with_partial_ex(BMesh *bm,
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const struct BMPartialUpdate *bmpinfo,
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const struct BMeshNormalsUpdate_Params *param);
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void BM_mesh_normals_update_with_partial(BMesh *bm, const struct BMPartialUpdate *bmpinfo);
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void BM_verts_calc_normal_vcos(BMesh *bm,
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const float (*fnos)[3],
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const float (*vcos)[3],
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float (*vnos)[3]);
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void BM_loops_calc_normal_vcos(BMesh *bm,
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const float (*vcos)[3],
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const float (*vnos)[3],
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const float (*fnos)[3],
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const bool use_split_normals,
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const float split_angle,
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float (*r_lnos)[3],
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struct MLoopNorSpaceArray *r_lnors_spacearr,
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short (*clnors_data)[2],
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const int cd_loop_clnors_offset,
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const bool do_rebuild);
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bool BM_loop_check_cyclic_smooth_fan(BMLoop *l_curr);
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void BM_lnorspacearr_store(BMesh *bm, float (*r_lnors)[3]);
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void BM_lnorspace_invalidate(BMesh *bm, const bool do_invalidate_all);
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void BM_lnorspace_rebuild(BMesh *bm, bool preserve_clnor);
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void BM_lnorspace_update(BMesh *bm);
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void BM_normals_loops_edges_tag(BMesh *bm, const bool do_edges);
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#ifndef NDEBUG
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void BM_lnorspace_err(BMesh *bm);
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#endif
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/* Loop Generics */
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struct BMLoopNorEditDataArray *BM_loop_normal_editdata_array_init(BMesh *bm,
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const bool do_all_loops_of_vert);
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void BM_loop_normal_editdata_array_free(struct BMLoopNorEditDataArray *lnors_ed_arr);
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bool BM_custom_loop_normals_to_vector_layer(struct BMesh *bm);
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void BM_custom_loop_normals_from_vector_layer(struct BMesh *bm, bool add_sharp_edges);
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void BM_edges_sharp_from_angle_set(BMesh *bm, const float split_angle);
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