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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2004 Blender Foundation. All rights reserved. */
#pragma once
/** \file
* \ingroup bmesh
*/
#include "bmesh.h"
struct CustomData_MeshMasks;
struct Main;
struct Mesh;
struct BMeshFromMeshParams {
bool calc_face_normal;
bool calc_vert_normal;
/* add a vertex CD_SHAPE_KEYINDEX layer */
bool add_key_index;
/* set vertex coordinates from the shapekey */
bool use_shapekey;
/* define the active shape key (index + 1) */
int active_shapekey;
struct CustomData_MeshMasks cd_mask_extra;
};
/**
* \brief Mesh -> BMesh
* \param bm: The mesh to write into, while this is typically a newly created BMesh,
* merging into existing data is supported.
* Note the custom-data layout isn't used.
* If more comprehensive merging is needed we should move this into a separate function
* since this should be kept fast for edit-mode switching and storing undo steps.
*
* \warning This function doesn't calculate face normals.
*/
void BM_mesh_bm_from_me(BMesh *bm, const struct Mesh *me, const struct BMeshFromMeshParams *params)
ATTR_NONNULL(1, 3);
struct BMeshToMeshParams {
/** Update object hook indices & vertex parents. */
bool calc_object_remap;
/**
* This re-assigns shape-key indices. Only do if the BMesh will have continued use
* to update the mesh & shape key in the future.
* In the case the BMesh is freed immediately, this can be left false.
*
* This is needed when flushing changes from edit-mode into object mode,
* so a second flush or edit-mode exit doesn't run with indices
* that have become invalid from updating the shape-key, see T71865.
*/
bool update_shapekey_indices;
/**
* Instead of copying the basis shape-key into the #MVert array,
* copy the #BMVert.co directly to #MVert.co (used for reading undo data).
*/
bool active_shapekey_to_mvert;
struct CustomData_MeshMasks cd_mask_extra;
};
/**
* \param bmain: May be NULL in case \a calc_object_remap parameter option is not set.
*/
void BM_mesh_bm_to_me(struct Main *bmain,
BMesh *bm,
struct Mesh *me,
const struct BMeshToMeshParams *params) ATTR_NONNULL(2, 3, 4);
/**
* A version of #BM_mesh_bm_to_me intended for getting the mesh
* to pass to the modifier stack for evaluation,
* instead of mode switching (where we make sure all data is kept
* and do expensive lookups to maintain shape keys).
*
* Key differences:
*
* - Don't support merging with existing mesh.
* - Ignore shape-keys.
* - Ignore vertex-parents.
* - Ignore selection history.
* - Uses simpler method to calculate #ME_EDGEDRAW
* - Uses #CD_MASK_DERIVEDMESH instead of #CD_MASK_MESH.
*
* \note Was `cddm_from_bmesh_ex` in 2.7x, removed `MFace` support.
*/
void BM_mesh_bm_to_me_for_eval(BMesh *bm,
struct Mesh *me,
const struct CustomData_MeshMasks *cd_mask_extra)
ATTR_NONNULL(1, 2);
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