1c77779160
In this commit, a temporary mesh is created representing the edit mesh. This mesh is then used in the Edit Mesh snapping system instead of the BMesh. By using a Mesh object for snapping, we remove a considerable amount of code and use a more optimized version of snapping. This simplifies the code and makes it easier to implement new features. ## Performance test: Face + Edge + Vert | | Cache | Gen. Snap | |--------|-----------|-----------| | Before | 680.88 ms | 0.1250 ms | | After | 489.06 ms | 0.1064 ms | | Improv | 28.65% | 14.88% | ## Performance test: Face | | Cache | Gen. Snap | |--------|-----------|-----------| | Before | 293.90 ms | 0.0230 ms | | After | 411.92 ms | 0.0256 ms | | Improv | -40.15% | -11.30% | Pull Request: https://projects.blender.org/blender/blender/pulls/117047
106 lines
3.6 KiB
C++
106 lines
3.6 KiB
C++
/* SPDX-FileCopyrightText: 2004 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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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 "BLI_string_ref.hh"
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#include "bmesh.hh"
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/**
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* \return Whether attributes with the given name are stored in special flags or fields in BMesh
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* rather than in the regular custom data blocks.
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*/
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bool BM_attribute_stored_in_bmesh_builtin(const blender::StringRef name);
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struct CustomData_MeshMasks;
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struct Main;
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struct Mesh;
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struct BMeshFromMeshParams {
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bool calc_face_normal;
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bool calc_vert_normal;
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/* add a vertex CD_SHAPE_KEYINDEX layer */
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bool add_key_index;
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/* set vertex coordinates from the shapekey */
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bool use_shapekey;
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/* define the active shape key (index + 1) */
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int active_shapekey;
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struct CustomData_MeshMasks cd_mask_extra;
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};
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/**
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* \brief Mesh -> BMesh
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* \param bm: The mesh to write into, while this is typically a newly created BMesh,
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* merging into existing data is supported.
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* Note the custom-data layout isn't used.
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* If more comprehensive merging is needed we should move this into a separate function
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* since this should be kept fast for edit-mode switching and storing undo steps.
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*
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* \warning This function doesn't calculate face normals.
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*/
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void BM_mesh_bm_from_me(BMesh *bm, const Mesh *mesh, const BMeshFromMeshParams *params)
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ATTR_NONNULL(1, 3);
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struct BMeshToMeshParams {
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/** Update object hook indices & vertex parents. */
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bool calc_object_remap;
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/**
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* This re-assigns shape-key indices. Only do if the BMesh will have continued use
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* to update the mesh & shape key in the future.
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* In the case the BMesh is freed immediately, this can be left false.
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*
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* This is needed when flushing changes from edit-mode into object mode,
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* so a second flush or edit-mode exit doesn't run with indices
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* that have become invalid from updating the shape-key, see #71865.
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*/
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bool update_shapekey_indices;
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/**
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* Instead of copying the basis shape-key into the position array,
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* copy the #BMVert.co directly to the #Mesh position (used for reading undo data).
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*/
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bool active_shapekey_to_mvert;
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struct CustomData_MeshMasks cd_mask_extra;
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};
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/**
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* \param bmain: May be NULL in case \a calc_object_remap parameter option is not set.
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*/
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void BM_mesh_bm_to_me(struct Main *bmain, BMesh *bm, Mesh *mesh, const BMeshToMeshParams *params)
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ATTR_NONNULL(2, 3, 4);
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/**
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* A version of #BM_mesh_bm_to_me intended for getting the mesh
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* to pass to the modifier stack for evaluation,
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* instead of mode switching (where we make sure all data is kept
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* and do expensive lookups to maintain shape keys).
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*
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* Key differences:
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*
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* - Don't support merging with existing mesh.
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* - Ignore shape-keys.
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* - Ignore vertex-parents.
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* - Ignore selection history.
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* - Uses #CD_MASK_DERIVEDMESH instead of #CD_MASK_MESH.
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*
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* \note Was `cddm_from_bmesh_ex` in 2.7x, removed `MFace` support.
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*/
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void BM_mesh_bm_to_me_for_eval(BMesh &bm, Mesh &mesh, const CustomData_MeshMasks *cd_mask_extra);
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/**
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* A version of #BM_mesh_bm_to_me_for_eval but copying data layers and Mesh attributes is optional.
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* It also allows shape-keys but don't re-assigns shape-key indices.
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*
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* \param mask Custom data masks to control which layers are copied.
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* If nullptr, no layer data is copied.
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* \param add_mesh_attributes If true, adds mesh attributes during the conversion.
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*/
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void BM_mesh_bm_to_me_compact(BMesh &bm,
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Mesh &mesh,
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const CustomData_MeshMasks *mask,
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bool add_mesh_attributes);
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