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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.
*/
#pragma once
/** \file
* \ingroup bmesh
*/
#include "BLI_compiler_attrs.h"
/**
* Parameters used to determine which kinds of data needs to be generated.
*/
typedef struct BMPartialUpdate_Params {
bool do_normals;
bool do_tessellate;
} BMPartialUpdate_Params;
/**
* Cached data to speed up partial updates.
*
* Hints:
*
* - Avoid creating this data for single updates,
* it should be created and reused across multiple updates to gain a significant benefit
* (while transforming geometry for example).
*
* - Partial normal updates use face & loop indices,
* setting them to dirty values between updates will slow down normal recalculation.
*/
typedef struct BMPartialUpdate {
BMVert **verts;
BMEdge **edges;
BMFace **faces;
int verts_len, verts_len_alloc;
int edges_len, edges_len_alloc;
int faces_len, faces_len_alloc;
/**
* Faces at the end of `faces` that don't need to have the normals recalculated
* but must be included when waiting the vertex normals.
*/
int faces_len_normal_calc_accumulate;
/** Store the parameters used in creation so invalid use can be asserted. */
BMPartialUpdate_Params params;
} BMPartialUpdate;
BMPartialUpdate *BM_mesh_partial_create_from_verts(BMesh *bm,
const BMPartialUpdate_Params *params,
const int verts_len,
bool (*filter_fn)(BMVert *, void *user_data),
void *user_data)
ATTR_NONNULL(1, 2, 4) ATTR_WARN_UNUSED_RESULT;
void BM_mesh_partial_destroy(BMPartialUpdate *bmpinfo) ATTR_NONNULL(1);
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