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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2007 by Nicholas Bishop. All rights reserved. */
#pragma once
/** \file
* \ingroup bke
*/
#include "BKE_subsurf.h"
#include "BLI_utildefines.h"
#ifdef __cplusplus
extern "C" {
#endif
struct Depsgraph;
struct DerivedMesh;
struct MDisps;
struct Mesh;
struct ModifierData;
struct MultiresModifierData;
struct Object;
struct Scene;
struct SubdivCCG;
struct MLoop;
struct MLoopTri;
struct MPoly;
struct MVert;
/**
* Delete mesh mdisps and grid paint masks.
*/
void multires_customdata_delete(struct Mesh *me);
void multires_set_tot_level(struct Object *ob, struct MultiresModifierData *mmd, int lvl);
void multires_mark_as_modified(struct Depsgraph *depsgraph,
struct Object *object,
enum MultiresModifiedFlags flags);
void multires_flush_sculpt_updates(struct Object *object);
void multires_force_sculpt_rebuild(struct Object *object);
void multires_force_external_reload(struct Object *object);
/* internal, only called in subsurf_ccg.c */
void multires_modifier_update_mdisps(struct DerivedMesh *dm, struct Scene *scene);
void multires_modifier_update_hidden(struct DerivedMesh *dm);
/**
* Reset the multi-res levels to match the number of mdisps.
*/
void multiresModifier_set_levels_from_disps(struct MultiresModifierData *mmd, struct Object *ob);
typedef enum MultiresFlags {
MULTIRES_USE_LOCAL_MMD = 1,
MULTIRES_USE_RENDER_PARAMS = 2,
MULTIRES_ALLOC_PAINT_MASK = 4,
MULTIRES_IGNORE_SIMPLIFY = 8,
} MultiresFlags;
ENUM_OPERATORS(MultiresFlags, MULTIRES_IGNORE_SIMPLIFY);
struct DerivedMesh *multires_make_derived_from_derived(struct DerivedMesh *dm,
struct MultiresModifierData *mmd,
struct Scene *scene,
struct Object *ob,
MultiresFlags flags);
struct MultiresModifierData *find_multires_modifier_before(struct Scene *scene,
struct ModifierData *lastmd);
/**
* used for applying scale on mdisps layer and syncing subdivide levels when joining objects.
* \param use_first: return first multi-res modifier if all multi-res'es are disabled.
*/
struct MultiresModifierData *get_multires_modifier(struct Scene *scene,
struct Object *ob,
bool use_first);
int multires_get_level(const struct Scene *scene,
const struct Object *ob,
const struct MultiresModifierData *mmd,
bool render,
bool ignore_simplify);
/**
* Creates mesh with multi-res modifier applied on current object's deform mesh.
*/
struct Mesh *BKE_multires_create_mesh(struct Depsgraph *depsgraph,
struct Object *object,
struct MultiresModifierData *mmd);
/**
* Get coordinates of a deformed base mesh which is an input to the given multi-res modifier.
* \note The modifiers will be re-evaluated.
*/
float (*BKE_multires_create_deformed_base_mesh_vert_coords(struct Depsgraph *depsgraph,
struct Object *object,
struct MultiresModifierData *mmd,
int *r_num_deformed_verts))[3];
/**
* \param direction: 1 for delete higher, 0 for lower (not implemented yet).
*/
void multiresModifier_del_levels(struct MultiresModifierData *mmd,
struct Scene *scene,
struct Object *object,
int direction);
void multiresModifier_base_apply(struct Depsgraph *depsgraph,
struct Object *object,
struct MultiresModifierData *mmd);
int multiresModifier_rebuild_subdiv(struct Depsgraph *depsgraph,
struct Object *object,
struct MultiresModifierData *mmd,
int rebuild_limit,
bool switch_view_to_lower_level);
/**
* If `ob_src` and `ob_dst` both have multi-res modifiers,
* synchronize them such that `ob_dst` has the same total number of levels as `ob_src`.
*/
void multiresModifier_sync_levels_ex(struct Object *ob_dst,
struct MultiresModifierData *mmd_src,
struct MultiresModifierData *mmd_dst);
void multires_stitch_grids(struct Object *);
void multiresModifier_scale_disp(struct Depsgraph *depsgraph,
struct Scene *scene,
struct Object *ob);
void multiresModifier_prepare_join(struct Depsgraph *depsgraph,
struct Scene *scene,
struct Object *ob,
struct Object *to_ob);
int multires_mdisp_corners(const struct MDisps *s);
/**
* Update multi-res data after topology changing.
*/
void multires_topology_changed(struct Mesh *me);
/**
* Makes sure data from an external file is fully read.
*
* Since the multi-res data files only contain displacement vectors without knowledge about
* subdivision level some extra work is needed. Namely make is to all displacement grids have
* proper level and number of displacement vectors set.
*/
void multires_ensure_external_read(struct Mesh *mesh, int top_level);
void multiresModifier_ensure_external_read(struct Mesh *mesh,
const struct MultiresModifierData *mmd);
/**** interpolation stuff ****/
/* Adapted from `sculptmode.c` */
void old_mdisps_bilinear(float out[3], float (*disps)[3], int st, float u, float v);
/**
* Find per-corner coordinate with given per-face UV coord.
*/
int mdisp_rot_face_to_crn(struct MVert *mvert,
struct MPoly *mpoly,
struct MLoop *mloop,
const struct MLoopTri *lt,
int face_side,
float u,
float v,
float *x,
float *y);
/* Reshaping, define in multires_reshape.c */
bool multiresModifier_reshapeFromVertcos(struct Depsgraph *depsgraph,
struct Object *object,
struct MultiresModifierData *mmd,
const float (*vert_coords)[3],
int num_vert_coords);
/**
* Returns truth on success, false otherwise.
*
* This function might fail in cases like source and destination not having
* matched amount of vertices.
*/
bool multiresModifier_reshapeFromObject(struct Depsgraph *depsgraph,
struct MultiresModifierData *mmd,
struct Object *dst,
struct Object *src);
bool multiresModifier_reshapeFromDeformModifier(struct Depsgraph *depsgraph,
struct Object *ob,
struct MultiresModifierData *mmd,
struct ModifierData *deform_md);
bool multiresModifier_reshapeFromCCG(int tot_level,
struct Mesh *coarse_mesh,
struct SubdivCCG *subdiv_ccg);
/* Subdivide multi-res displacement once. */
typedef enum eMultiresSubdivideModeType {
MULTIRES_SUBDIVIDE_CATMULL_CLARK,
MULTIRES_SUBDIVIDE_SIMPLE,
MULTIRES_SUBDIVIDE_LINEAR,
} eMultiresSubdivideModeType;
void multiresModifier_subdivide(struct Object *object,
struct MultiresModifierData *mmd,
eMultiresSubdivideModeType mode);
void multires_subdivide_create_tangent_displacement_linear_grids(struct Object *object,
struct MultiresModifierData *mmd);
/**
* Subdivide displacement to the given level.
* If level is lower than the current top level nothing happens.
*/
void multiresModifier_subdivide_to_level(struct Object *object,
struct MultiresModifierData *mmd,
int top_level,
eMultiresSubdivideModeType mode);
/* Subdivision integration, defined in multires_subdiv.c */
struct SubdivSettings;
struct SubdivToMeshSettings;
void BKE_multires_subdiv_settings_init(struct SubdivSettings *settings,
const struct MultiresModifierData *mmd);
/* TODO(sergey): Replace this set of boolean flags with bitmask. */
void BKE_multires_subdiv_mesh_settings_init(struct SubdivToMeshSettings *mesh_settings,
const struct Scene *scene,
const struct Object *object,
const struct MultiresModifierData *mmd,
bool use_render_params,
bool ignore_simplify,
bool ignore_control_edges);
/* General helpers. */
/**
* For a given partial derivatives of a PTEX face get tangent matrix for displacement.
*
* Corner needs to be known to properly "rotate" partial derivatives when the
* matrix is being constructed for quad. For non-quad the corner is to be set to 0.
*/
BLI_INLINE void BKE_multires_construct_tangent_matrix(float tangent_matrix[3][3],
const float dPdu[3],
const float dPdv[3],
int corner);
/* Versioning. */
/**
* Convert displacement which is stored for simply-subdivided mesh to a Catmull-Clark
* subdivided mesh.
*/
void multires_do_versions_simple_to_catmull_clark(struct Object *object,
struct MultiresModifierData *mmd);
#ifdef __cplusplus
}
#endif
#include "intern/multires_inline.h"
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