bmesh_interp.hh

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/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once

 
#include "BLI_string_ref.hh"
 
#include "bmesh_class.hh"
 
struct LinkNode;
struct MemArena;
 
namespace blender::bke {
enum class AttrDomain : int8_t;
enum class AttrType : int16_t;
}  // namespace blender::bke
 
void BM_loop_interp_multires_ex(BMesh *bm,
                                BMLoop *l_dst,
                                const BMFace *f_src,
                                const float f_dst_center[3],
                                const float f_src_center[3],
                                int cd_loop_mdisp_offset);
void BM_loop_interp_multires(BMesh *bm, BMLoop *l_dst, const BMFace *f_src);
 
void BM_face_interp_multires_ex(BMesh *bm,
                                BMFace *f_dst,
                                const BMFace *f_src,
                                const float f_dst_center[3],
                                const float f_src_center[3],
                                int cd_loop_mdisp_offset);
void BM_face_interp_multires(BMesh *bm, BMFace *f_dst, const BMFace *f_src);
 
void BM_vert_interp_from_face(BMesh *bm, BMVert *v_dst, const BMFace *f_src);

void BM_data_interp_from_verts(
    BMesh *bm, const BMVert *v_src_1, const BMVert *v_src_2, BMVert *v_dst, float fac);
void BM_data_interp_from_edges(
    BMesh *bm, const BMEdge *e_src_1, const BMEdge *e_src_2, BMEdge *e_dst, float fac);
void BM_data_interp_face_vert_edge(
    BMesh *bm, const BMVert *v_src_1, const BMVert *v_src_2, BMVert *v, BMEdge *e, float fac);
void BM_data_layer_add(BMesh *bm, CustomData *data, int type);
void BM_data_layer_add_named(BMesh *bm, CustomData *data, int type, blender::StringRef name);
void BM_data_layer_ensure_named(BMesh *bm, CustomData *data, int type, blender::StringRef name);
bool BM_data_layer_has_named(const BMesh *bm,
                             const CustomData *data,
                             int type,
                             blender::StringRef name);
void BM_data_layer_free(BMesh *bm, CustomData *data, int type);

void BM_uv_map_attr_pin_ensure_for_all_layers(BMesh *bm);
 
void BM_uv_map_attr_pin_ensure_named(BMesh *bm, blender::StringRef uv_map_name);
bool BM_uv_map_attr_pin_exists(const BMesh *bm, blender::StringRef uv_map_name);

bool BM_data_layer_free_named(BMesh *bm, CustomData *data, blender::StringRef name);
void BM_data_layer_free_n(BMesh *bm, CustomData *data, int type, int n);
void BM_data_layer_copy(BMesh *bm, CustomData *data, int type, int src_n, int dst_n);
 
/* See #BM_data_layer_lookup. */
struct BMDataLayerLookup {
  const int offset = -1;
  blender::bke::AttrDomain domain;
  blender::bke::AttrType type;
  operator bool() const
  {
    return offset != -1;
  }
};

BMDataLayerLookup BM_data_layer_lookup(const BMesh &bm, const blender::StringRef name);
 
float BM_elem_float_data_get(CustomData *cd, void *element, int type);
void BM_elem_float_data_set(CustomData *cd, void *element, int type, float val);

void BM_face_interp_from_face_ex(BMesh *bm,
                                 BMFace *f_dst,
                                 const BMFace *f_src,
                                 bool do_vertex,
                                 const void **blocks,
                                 const void **blocks_v,
                                 float (*cos_2d)[2],
                                 float axis_mat[3][3]);
void BM_face_interp_from_face(BMesh *bm, BMFace *f_dst, const BMFace *f_src, bool do_vertex);
void BM_loop_interp_from_face(
    BMesh *bm, BMLoop *l_dst, const BMFace *f_src, bool do_vertex, bool do_multires);

void BM_face_multires_bounds_smooth(BMesh *bm, BMFace *f);
 
LinkNode *BM_vert_loop_groups_data_layer_create(
    BMesh *bm, BMVert *v, int layer_n, const float *loop_weights, MemArena *arena);
void BM_vert_loop_groups_data_layer_merge(BMesh *bm, LinkNode *groups, int layer_n);
void BM_vert_loop_groups_data_layer_merge_weights(BMesh *bm,
                                                  LinkNode *groups,
                                                  int layer_n,
                                                  const float *loop_weights);