6192695a94
Generally the `extern "C" {` brackets shouldn't be added around other
headers since it causes problems when using C++ features in them.
Follow that convention for the "bmesh.h" header.
94 lines
3.0 KiB
C
94 lines
3.0 KiB
C
/* 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_compiler_attrs.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Parameters used to determine which kinds of data needs to be generated.
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*/
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typedef struct BMPartialUpdate_Params {
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bool do_normals;
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bool do_tessellate;
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} BMPartialUpdate_Params;
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/**
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* Cached data to speed up partial updates.
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*
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* Hints:
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*
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* - Avoid creating this data for single updates,
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* it should be created and reused across multiple updates to gain a significant benefit
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* (while transforming geometry for example).
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*
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* - Partial normal updates use face & loop indices,
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* setting them to dirty values between updates will slow down normal recalculation.
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*/
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typedef struct BMPartialUpdate {
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BMVert **verts;
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BMFace **faces;
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int verts_len, verts_len_alloc;
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int faces_len, faces_len_alloc;
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/** Store the parameters used in creation so invalid use can be asserted. */
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BMPartialUpdate_Params params;
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} BMPartialUpdate;
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/**
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* All Tagged & Connected, see: #BM_mesh_partial_create_from_verts
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* Operate on everything that's tagged as well as connected geometry.
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*/
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BMPartialUpdate *BM_mesh_partial_create_from_verts(BMesh *bm,
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const BMPartialUpdate_Params *params,
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const unsigned int *verts_mask,
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int verts_mask_count)
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ATTR_NONNULL(1, 2, 3) ATTR_WARN_UNUSED_RESULT;
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/**
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* All Connected, operate on all faces that have both tagged and un-tagged vertices.
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*
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* Reduces computations when transforming isolated regions.
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*/
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BMPartialUpdate *BM_mesh_partial_create_from_verts_group_single(
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BMesh *bm,
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const BMPartialUpdate_Params *params,
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const unsigned int *verts_mask,
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int verts_mask_count) ATTR_NONNULL(1, 2, 3) ATTR_WARN_UNUSED_RESULT;
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/**
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* All Connected, operate on all faces that have vertices in the same group.
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*
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* Reduces computations when transforming isolated regions.
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*
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* This is a version of #BM_mesh_partial_create_from_verts_group_single
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* that handles multiple groups instead of a bitmap mask.
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*
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* This is needed for example when transform has mirror enabled,
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* since one side needs to have a different group to the other since a face that has vertices
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* attached to both won't have an affine transformation.
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*
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* \param verts_group: Vertex aligned array of groups.
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* Values are used as follows:
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* - >0: Each face is grouped with other faces of the same group.
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* - 0: Not in a group (don't handle these).
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* - -1: Don't use grouping logic (include any face that contains a vertex with this group).
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* \param verts_group_count: The number of non-zero values in `verts_groups`.
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*/
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BMPartialUpdate *BM_mesh_partial_create_from_verts_group_multi(
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BMesh *bm, const BMPartialUpdate_Params *params, const int *verts_group, int verts_group_count)
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ATTR_NONNULL(1, 2, 3) ATTR_WARN_UNUSED_RESULT;
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void BM_mesh_partial_destroy(BMPartialUpdate *bmpinfo) ATTR_NONNULL(1);
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#ifdef __cplusplus
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}
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#endif
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