277 lines
12 KiB
C++
277 lines
12 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2001-2002 NaN Holding BV. All rights reserved. */
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#pragma once
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** \file
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* \ingroup bke
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* \brief support for deformation groups and hooks.
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*/
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struct BlendDataReader;
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struct BlendWriter;
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struct ID;
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struct ListBase;
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struct MDeformVert;
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struct MEdge;
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struct MLoop;
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struct MPoly;
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struct Object;
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struct bDeformGroup;
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bool BKE_object_supports_vertex_groups(const struct Object *ob);
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const struct ListBase *BKE_object_defgroup_list(const struct Object *ob);
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struct ListBase *BKE_object_defgroup_list_mutable(struct Object *ob);
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int BKE_object_defgroup_count(const struct Object *ob);
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/**
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* \note For historical reasons, the index starts at 1 rather than 0.
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*/
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int BKE_object_defgroup_active_index_get(const struct Object *ob);
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/**
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* \note For historical reasons, the index starts at 1 rather than 0.
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*/
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void BKE_object_defgroup_active_index_set(struct Object *ob, int new_index);
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const struct ListBase *BKE_id_defgroup_list_get(const struct ID *id);
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struct ListBase *BKE_id_defgroup_list_get_mutable(struct ID *id);
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int BKE_id_defgroup_name_index(const struct ID *id, const char *name);
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bool BKE_id_defgroup_name_find(const struct ID *id,
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const char *name,
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int *r_index,
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struct bDeformGroup **r_group);
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struct bDeformGroup *BKE_object_defgroup_new(struct Object *ob, const char *name);
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void BKE_defgroup_copy_list(struct ListBase *outbase, const struct ListBase *inbase);
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struct bDeformGroup *BKE_defgroup_duplicate(const struct bDeformGroup *ingroup);
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struct bDeformGroup *BKE_object_defgroup_find_name(const struct Object *ob, const char *name);
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/**
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* \note caller must free.
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*/
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int *BKE_object_defgroup_flip_map(const struct Object *ob, int *flip_map_len, bool use_default);
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/**
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* \note caller must free.
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*/
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int *BKE_object_defgroup_flip_map_single(const struct Object *ob,
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int *flip_map_len,
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bool use_default,
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int defgroup);
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int BKE_object_defgroup_flip_index(const struct Object *ob, int index, bool use_default);
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int BKE_object_defgroup_name_index(const struct Object *ob, const char *name);
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void BKE_object_defgroup_unique_name(struct bDeformGroup *dg, struct Object *ob);
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struct MDeformWeight *BKE_defvert_find_index(const struct MDeformVert *dv, int defgroup);
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/**
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* Ensures that `dv` has a deform weight entry for the specified defweight group.
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*
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* \note this function is mirrored in editmesh_tools.c, for use for edit-vertices.
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*/
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struct MDeformWeight *BKE_defvert_ensure_index(struct MDeformVert *dv, int defgroup);
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/**
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* Adds the given vertex to the specified vertex group, with given weight.
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*
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* \warning this does NOT check for existing, assume caller already knows its not there.
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*/
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void BKE_defvert_add_index_notest(struct MDeformVert *dv, int defgroup, float weight);
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/**
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* Removes the given vertex from the vertex group.
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*
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* \warning This function frees the given #MDeformWeight, do not use it afterward!
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*/
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void BKE_defvert_remove_group(struct MDeformVert *dvert, struct MDeformWeight *dw);
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void BKE_defvert_clear(struct MDeformVert *dvert);
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/**
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* \return The first group index shared by both deform verts
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* or -1 if none are found.
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*/
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int BKE_defvert_find_shared(const struct MDeformVert *dvert_a, const struct MDeformVert *dvert_b);
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/**
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* \return true if has no weights.
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*/
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bool BKE_defvert_is_weight_zero(const struct MDeformVert *dvert, int defgroup_tot);
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void BKE_defvert_array_free_elems(struct MDeformVert *dvert, int totvert);
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void BKE_defvert_array_free(struct MDeformVert *dvert, int totvert);
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void BKE_defvert_array_copy(struct MDeformVert *dst, const struct MDeformVert *src, int totvert);
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float BKE_defvert_find_weight(const struct MDeformVert *dvert, int defgroup);
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/**
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* Take care with this the rationale is:
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* - if the object has no vertex group. act like vertex group isn't set and return 1.0.
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* - if the vertex group exists but the 'defgroup' isn't found on this vertex, _still_ return 0.0.
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*
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* This is a bit confusing, just saves some checks from the caller.
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*/
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float BKE_defvert_array_find_weight_safe(const struct MDeformVert *dvert, int index, int defgroup);
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/**
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* \return The total weight in all groups marked in the selection mask.
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*/
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float BKE_defvert_total_selected_weight(const struct MDeformVert *dv,
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int defbase_tot,
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const bool *defbase_sel);
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/**
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* \return The representative weight of a multi-paint group, used for
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* viewport colors and actual painting.
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*
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* Result equal to sum of weights with auto normalize, and average otherwise.
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* Value is not clamped, since painting relies on multiplication being always
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* commutative with the collective weight function.
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*/
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float BKE_defvert_multipaint_collective_weight(const struct MDeformVert *dv,
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int defbase_tot,
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const bool *defbase_sel,
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int defbase_tot_sel,
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bool is_normalized);
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/* This much unlocked weight is considered equivalent to none. */
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#define VERTEX_WEIGHT_LOCK_EPSILON 1e-6f
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/**
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* Computes the display weight for the lock relative weight paint mode.
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*
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* \return weight divided by 1-locked_weight with division by zero check
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*/
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float BKE_defvert_calc_lock_relative_weight(float weight,
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float locked_weight,
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float unlocked_weight);
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/**
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* Computes the display weight for the lock relative weight paint mode, using weight data.
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*
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* \return weight divided by unlocked, or 1-locked_weight with division by zero check.
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*/
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float BKE_defvert_lock_relative_weight(float weight,
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const struct MDeformVert *dv,
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int defbase_tot,
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const bool *defbase_locked,
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const bool *defbase_unlocked);
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void BKE_defvert_copy(struct MDeformVert *dvert_dst, const struct MDeformVert *dvert_src);
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/**
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* Overwrite weights filtered by vgroup_subset.
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* - do nothing if neither are set.
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* - add destination weight if needed
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*/
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void BKE_defvert_copy_subset(struct MDeformVert *dvert_dst,
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const struct MDeformVert *dvert_src,
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const bool *vgroup_subset,
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int vgroup_tot);
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/**
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* Overwrite weights filtered by vgroup_subset and with mirroring specified by the flip map
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* - do nothing if neither are set.
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* - add destination weight if needed
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*/
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void BKE_defvert_mirror_subset(struct MDeformVert *dvert_dst,
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const struct MDeformVert *dvert_src,
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const bool *vgroup_subset,
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int vgroup_tot,
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const int *flip_map,
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int flip_map_len);
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/**
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* Copy an index from one #MDeformVert to another.
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* - do nothing if neither are set.
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* - add destination weight if needed.
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*/
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void BKE_defvert_copy_index(struct MDeformVert *dvert_dst,
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int defgroup_dst,
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const struct MDeformVert *dvert_src,
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int defgroup_src);
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/**
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* Only sync over matching weights, don't add or remove groups
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* warning, loop within loop.
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*/
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void BKE_defvert_sync(struct MDeformVert *dvert_dst,
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const struct MDeformVert *dvert_src,
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bool use_ensure);
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/**
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* be sure all flip_map values are valid
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*/
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void BKE_defvert_sync_mapped(struct MDeformVert *dvert_dst,
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const struct MDeformVert *dvert_src,
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const int *flip_map,
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int flip_map_len,
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bool use_ensure);
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/**
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* be sure all flip_map values are valid
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*/
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void BKE_defvert_remap(struct MDeformVert *dvert, const int *map, int map_len);
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void BKE_defvert_flip(struct MDeformVert *dvert, const int *flip_map, int flip_map_len);
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void BKE_defvert_flip_merged(struct MDeformVert *dvert, const int *flip_map, int flip_map_len);
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void BKE_defvert_normalize(struct MDeformVert *dvert);
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/**
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* Same as #BKE_defvert_normalize but takes a bool array.
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*/
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void BKE_defvert_normalize_subset(struct MDeformVert *dvert,
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const bool *vgroup_subset,
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int vgroup_tot);
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/**
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* Same as BKE_defvert_normalize() if the locked vgroup is not a member of the subset
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*/
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void BKE_defvert_normalize_lock_single(struct MDeformVert *dvert,
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const bool *vgroup_subset,
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int vgroup_tot,
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uint def_nr_lock);
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/**
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* Same as BKE_defvert_normalize() if no locked vgroup is a member of the subset
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*/
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void BKE_defvert_normalize_lock_map(struct MDeformVert *dvert,
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const bool *vgroup_subset,
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int vgroup_tot,
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const bool *lock_flags,
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int defbase_tot);
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/* Utilities to 'extract' a given vgroup into a simple float array,
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* for verts, but also edges/polys/loops. */
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void BKE_defvert_extract_vgroup_to_vertweights(const struct MDeformVert *dvert,
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int defgroup,
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int num_verts,
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bool invert_vgroup,
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float *r_weights);
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/**
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* The following three make basic interpolation,
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* using temp vert_weights array to avoid looking up same weight several times.
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*/
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void BKE_defvert_extract_vgroup_to_edgeweights(const struct MDeformVert *dvert,
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int defgroup,
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int num_verts,
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struct MEdge *edges,
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int num_edges,
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bool invert_vgroup,
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float *r_weights);
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void BKE_defvert_extract_vgroup_to_loopweights(const struct MDeformVert *dvert,
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int defgroup,
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int num_verts,
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struct MLoop *loops,
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int num_loops,
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bool invert_vgroup,
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float *r_weights);
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void BKE_defvert_extract_vgroup_to_polyweights(const struct MDeformVert *dvert,
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int defgroup,
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int num_verts,
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struct MLoop *loops,
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int num_loops,
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struct MPoly *polys,
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int num_polys,
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bool invert_vgroup,
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float *r_weights);
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void BKE_defvert_weight_to_rgb(float r_rgb[3], float weight);
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void BKE_defvert_blend_write(struct BlendWriter *writer,
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int count,
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const struct MDeformVert *dvlist);
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void BKE_defvert_blend_read(struct BlendDataReader *reader,
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int count,
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struct MDeformVert *mdverts);
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void BKE_defbase_blend_write(struct BlendWriter *writer, const ListBase *defbase);
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#ifdef __cplusplus
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}
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#endif
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