tornavis/source/blender/blenkernel/BKE_modifier.h

647 lines
24 KiB
C++

/* SPDX-FileCopyrightText: 2023 Blender Foundation
*
* SPDX-License-Identifier: GPL-2.0-or-later */
#pragma once
/** \file
* \ingroup bke
*/
#include "BKE_customdata.h"
#include "BLI_compiler_attrs.h"
#include "DNA_modifier_types.h" /* needed for all enum typdefs */
#ifdef __cplusplus
namespace blender::bke {
struct GeometrySet;
}
using GeometrySetHandle = blender::bke::GeometrySet;
#else
typedef struct GeometrySetHandle GeometrySetHandle;
#endif
#ifdef __cplusplus
extern "C" {
#endif
struct ARegionType;
struct BMEditMesh;
struct BlendDataReader;
struct BlendLibReader;
struct BlendWriter;
struct CustomData_MeshMasks;
struct DepsNodeHandle;
struct Depsgraph;
struct ID;
struct ListBase;
struct Main;
struct Mesh;
struct ModifierData;
struct Object;
struct Scene;
struct bArmature;
typedef enum {
/* Should not be used, only for None modifier type */
eModifierTypeType_None,
/**
* Modifier only does deformation, implies that modifier
* type should have a valid deformVerts function. OnlyDeform
* style modifiers implicitly accept either mesh or CV
* input but should still declare flags appropriately.
*/
eModifierTypeType_OnlyDeform,
/** Modifier adds geometry. */
eModifierTypeType_Constructive,
/* Modifier can add and remove geometry. */
eModifierTypeType_Nonconstructive,
/**
* Both deformVerts & applyModifier are valid calls
* used for particles modifier that doesn't actually modify the object
* unless it's a mesh and can be exploded -> curve can also emit particles
*/
eModifierTypeType_DeformOrConstruct,
/**
* Like eModifierTypeType_Nonconstructive, but does not affect the geometry
* of the object, rather some of its CustomData layers.
* E.g. UVProject and WeightVG modifiers. */
eModifierTypeType_NonGeometrical,
} ModifierTypeType;
typedef enum {
eModifierTypeFlag_AcceptsMesh = (1 << 0),
eModifierTypeFlag_AcceptsCVs = (1 << 1),
eModifierTypeFlag_SupportsMapping = (1 << 2),
eModifierTypeFlag_SupportsEditmode = (1 << 3),
/**
* For modifiers that support editmode this determines if the
* modifier should be enabled by default in editmode. This should
* only be used by modifiers that are relatively speedy and
* also generally used in editmode, otherwise let the user enable
* it by hand.
*/
eModifierTypeFlag_EnableInEditmode = (1 << 4),
/**
* For modifiers that require original data and so cannot
* be placed after any non-deformative modifier.
*/
eModifierTypeFlag_RequiresOriginalData = (1 << 5),
/**
* For modifiers that support point-cache,
* so we can check to see if it has files we need to deal with.
*/
eModifierTypeFlag_UsesPointCache = (1 << 6),
/** For physics modifiers, max one per type */
eModifierTypeFlag_Single = (1 << 7),
/** Some modifier can't be added manually by user */
eModifierTypeFlag_NoUserAdd = (1 << 8),
/** For modifiers that use CD_PREVIEW_MCOL for preview. */
eModifierTypeFlag_UsesPreview = (1 << 9),
eModifierTypeFlag_AcceptsVertexCosOnly = (1 << 10),
/** Accepts #BMesh input (without conversion). */
eModifierTypeFlag_AcceptsBMesh = (1 << 11),
} ModifierTypeFlag;
ENUM_OPERATORS(ModifierTypeFlag, eModifierTypeFlag_AcceptsBMesh)
typedef void (*IDWalkFunc)(void *userData, struct Object *ob, struct ID **idpoin, int cb_flag);
typedef void (*TexWalkFunc)(void *userData,
struct Object *ob,
struct ModifierData *md,
const char *propname);
typedef enum ModifierApplyFlag {
/** Render time. */
MOD_APPLY_RENDER = 1 << 0,
/** Result of evaluation will be cached, so modifier might
* want to cache data for quick updates (used by subdivision-surface) */
MOD_APPLY_USECACHE = 1 << 1,
/** Modifier evaluated for undeformed texture coordinates */
MOD_APPLY_ORCO = 1 << 2,
/** Ignore scene simplification flag and use subdivisions
* level set in multires modifier. */
MOD_APPLY_IGNORE_SIMPLIFY = 1 << 3,
/** The effect of this modifier will be applied to the base mesh
* The modifier itself will be removed from the modifier stack.
* This flag can be checked to ignore rendering display data to the mesh.
* See `OBJECT_OT_modifier_apply` operator. */
MOD_APPLY_TO_BASE_MESH = 1 << 4,
} ModifierApplyFlag;
ENUM_OPERATORS(ModifierApplyFlag, MOD_APPLY_TO_BASE_MESH);
typedef struct ModifierUpdateDepsgraphContext {
struct Scene *scene;
struct Object *object;
struct DepsNodeHandle *node;
} ModifierUpdateDepsgraphContext;
/* Contains the information for deformXXX and applyXXX functions below that
* doesn't change between consecutive modifiers. */
typedef struct ModifierEvalContext {
struct Depsgraph *depsgraph;
struct Object *object;
ModifierApplyFlag flag;
} ModifierEvalContext;
typedef struct ModifierTypeInfo {
/* The user visible name for this modifier */
char name[32];
/* The DNA struct name for the modifier data type, used to
* write the DNA data out.
*/
char structName[32];
/* The size of the modifier data type, used by allocation. */
int structSize;
/* StructRNA of this modifier. This is typically something like RNA_*Modifier. */
struct StructRNA *srna;
ModifierTypeType type;
ModifierTypeFlag flags;
/* Icon of the modifier. Usually something like ICON_MOD_*. */
int icon;
/********************* Non-optional functions *********************/
/**
* Copy instance data for this modifier type. Should copy all user
* level settings to the target modifier.
*
* \param flag: Copying options (see BKE_lib_id.h's LIB_ID_COPY_... flags for more).
*/
void (*copyData)(const struct ModifierData *md, struct ModifierData *target, int flag);
/********************* Deform modifier functions *********************/
/**
* Only for deform types, should apply the deformation
* to the given vertex array. If the deformer requires information from
* the object it can obtain it from the mesh argument if non-NULL,
* and otherwise the ob argument.
*/
void (*deformVerts)(struct ModifierData *md,
const struct ModifierEvalContext *ctx,
struct Mesh *mesh,
float (*vertexCos)[3],
int numVerts);
/**
* Like deformMatricesEM but called from object mode (for supporting modifiers in sculpt mode).
*/
void (*deformMatrices)(struct ModifierData *md,
const struct ModifierEvalContext *ctx,
struct Mesh *mesh,
float (*vertexCos)[3],
float (*defMats)[3][3],
int numVerts);
/**
* Like deformVerts but called during editmode (for supporting modifiers)
*/
void (*deformVertsEM)(struct ModifierData *md,
const struct ModifierEvalContext *ctx,
struct BMEditMesh *editData,
struct Mesh *mesh,
float (*vertexCos)[3],
int numVerts);
/* Set deform matrix per vertex for crazy-space correction */
void (*deformMatricesEM)(struct ModifierData *md,
const struct ModifierEvalContext *ctx,
struct BMEditMesh *editData,
struct Mesh *mesh,
float (*vertexCos)[3],
float (*defMats)[3][3],
int numVerts);
/********************* Non-deform modifier functions *********************/
/**
* For non-deform types: apply the modifier and return a mesh data-block.
*
* The mesh argument should always be non-NULL; the modifier should use the
* passed in mesh data-block rather than object->data, as it contains the mesh
* with modifier applied up to this point.
*
* The modifier may modify and return the mesh argument, but must not free it
* and must ensure any referenced data layers are converted to non-referenced
* before modification.
*/
struct Mesh *(*modifyMesh)(struct ModifierData *md,
const struct ModifierEvalContext *ctx,
struct Mesh *mesh);
/**
* The modifier has to change the geometry set in-place. The geometry set can contain zero or
* more geometry components. This callback can be used by modifiers that don't work on any
* specific type of geometry (e.g. mesh).
*/
void (*modifyGeometrySet)(struct ModifierData *md,
const struct ModifierEvalContext *ctx,
GeometrySetHandle *geometry_set);
/********************* Optional functions *********************/
/**
* Initialize new instance data for this modifier type, this function
* should set modifier variables to their default values.
*
* This function is optional.
*/
void (*initData)(struct ModifierData *md);
/**
* Should add to passed \a r_cddata_masks the data types that this
* modifier needs. If (mask & (1 << (layer type))) != 0, this modifier
* needs that custom data layer. It can change required layers
* depending on the modifier's settings.
*
* Note that this means extra data (e.g. vertex groups) - it is assumed
* that all modifiers need mesh data and deform modifiers need vertex
* coordinates.
*
* If this function is not present, it is assumed that no extra data is needed.
*
* This function is optional.
*/
void (*requiredDataMask)(struct ModifierData *md, struct CustomData_MeshMasks *r_cddata_masks);
/**
* Free internal modifier data variables, this function should
* not free the md variable itself.
*
* This function is responsible for freeing the runtime data as well.
*
* This function is optional.
*/
void (*freeData)(struct ModifierData *md);
/**
* Return a boolean value indicating if this modifier is able to be
* calculated based on the modifier data. This is *not* regarding the
* md->flag, that is tested by the system, this is just if the data
* validates (for example, a lattice will return false if the lattice
* object is not defined).
*
* This function is optional (assumes never disabled if not present).
*/
bool (*isDisabled)(const struct Scene *scene, struct ModifierData *md, bool userRenderParams);
/**
* Add the appropriate relations to the dependency graph.
*
* This function is optional.
*/
void (*updateDepsgraph)(struct ModifierData *md, const ModifierUpdateDepsgraphContext *ctx);
/**
* Should return true if the modifier needs to be recalculated on time
* changes.
*
* This function is optional (assumes false if not present).
*/
bool (*dependsOnTime)(struct Scene *scene, struct ModifierData *md);
/**
* True when a deform modifier uses normals, the requiredDataMask
* can't be used here because that refers to a normal layer whereas
* in this case we need to know if the deform modifier uses normals.
*
* this is needed because applying 2 deform modifiers will give the
* second modifier bogus normals.
*/
bool (*dependsOnNormals)(struct ModifierData *md);
/**
* Should call the given walk function with a pointer to each ID
* pointer (i.e. each data-block pointer) that the modifier data
* stores. This is used for linking on file load and for
* unlinking data-blocks or forwarding data-block references.
*
* This function is optional.
*/
void (*foreachIDLink)(struct ModifierData *md,
struct Object *ob,
IDWalkFunc walk,
void *userData);
/**
* Should call the given walk function for each texture that the
* modifier data stores. This is used for finding all textures in
* the context for the UI.
*
* This function is optional. If it is not present, it will be
* assumed the modifier has no textures.
*/
void (*foreachTexLink)(struct ModifierData *md,
struct Object *ob,
TexWalkFunc walk,
void *userData);
/**
* Free given run-time data.
*
* This data is coming from a modifier of the corresponding type, but actual
* modifier data is not known here.
*
* Notes:
* - The data itself is to be de-allocated as well.
* - This callback is allowed to receive NULL pointer as a data, so it's
* more like "ensure the data is freed".
*/
void (*freeRuntimeData)(void *runtime_data);
/** Register the panel types for the modifier's UI. */
void (*panelRegister)(struct ARegionType *region_type);
/**
* Is called when the modifier is written to a file. The modifier data struct itself is written
* already.
*
* This method should write any additional arrays and referenced structs that should be
* stored in the file.
*/
void (*blendWrite)(struct BlendWriter *writer,
const struct ID *id_owner,
const struct ModifierData *md);
/**
* Is called when the modifier is read from a file.
*
* It can be used to update pointers to arrays and other structs. Furthermore, fields that have
* not been written (e.g. runtime data) can be reset.
*/
void (*blendRead)(struct BlendDataReader *reader, struct ModifierData *md);
} ModifierTypeInfo;
/* Used to find a modifier's panel type. */
#define MODIFIER_TYPE_PANEL_PREFIX "MOD_PT_"
/* Initialize modifier's global data (type info and some common global storage). */
void BKE_modifier_init(void);
const ModifierTypeInfo *BKE_modifier_get_info(ModifierType type);
/* For modifier UI panels. */
/**
* Get the idname of the modifier type's panel, which was defined in the #panelRegister callback.
*/
void BKE_modifier_type_panel_id(ModifierType type, char *r_idname);
void BKE_modifier_panel_expand(struct ModifierData *md);
/* Modifier utility calls, do call through type pointer and return
* default values if pointer is optional.
*/
struct ModifierData *BKE_modifier_new(int type);
void BKE_modifier_free_ex(struct ModifierData *md, int flag);
void BKE_modifier_free(struct ModifierData *md);
/**
* Use instead of `BLI_remlink` when the object's active modifier should change.
*/
void BKE_modifier_remove_from_list(struct Object *ob, struct ModifierData *md);
/* Generate new UUID for the given modifier. */
void BKE_modifier_session_uuid_generate(struct ModifierData *md);
bool BKE_modifier_unique_name(struct ListBase *modifiers, struct ModifierData *md);
struct ModifierData *BKE_modifier_copy_ex(const struct ModifierData *md, int flag);
/**
* Callback's can use this to avoid copying every member.
*/
void BKE_modifier_copydata_generic(const struct ModifierData *md,
struct ModifierData *md_dst,
int flag);
void BKE_modifier_copydata(const struct ModifierData *md, struct ModifierData *target);
void BKE_modifier_copydata_ex(const struct ModifierData *md,
struct ModifierData *target,
int flag);
bool BKE_modifier_depends_ontime(struct Scene *scene, struct ModifierData *md);
bool BKE_modifier_supports_mapping(struct ModifierData *md);
bool BKE_modifier_supports_cage(struct Scene *scene, struct ModifierData *md);
bool BKE_modifier_couldbe_cage(struct Scene *scene, struct ModifierData *md);
bool BKE_modifier_is_correctable_deformed(struct ModifierData *md);
bool BKE_modifier_is_same_topology(ModifierData *md);
bool BKE_modifier_is_non_geometrical(ModifierData *md);
/**
* Check whether is enabled.
*
* \param scene: Current scene, may be NULL,
* in which case `isDisabled` callback of the modifier is never called.
*/
bool BKE_modifier_is_enabled(const struct Scene *scene,
struct ModifierData *md,
int required_mode);
/**
* Check whether given modifier is not local (i.e. from linked data) when the object is a library
* override.
*
* \param md: May be NULL, in which case we consider it as a non-local modifier case.
*/
bool BKE_modifier_is_nonlocal_in_liboverride(const struct Object *ob,
const struct ModifierData *md);
/* Set modifier execution error.
* The message will be shown in the interface and will be logged as an error to the console. */
void BKE_modifier_set_error(const struct Object *ob,
struct ModifierData *md,
const char *format,
...) ATTR_PRINTF_FORMAT(3, 4);
/* Set modifier execution warning, which does not prevent the modifier from being applied but which
* might need an attention. The message will only be shown in the interface, but will not appear in
* the logs. */
void BKE_modifier_set_warning(const struct Object *ob,
struct ModifierData *md,
const char *format,
...) ATTR_PRINTF_FORMAT(3, 4);
bool BKE_modifier_is_preview(struct ModifierData *md);
void BKE_modifiers_foreach_ID_link(struct Object *ob, IDWalkFunc walk, void *userData);
void BKE_modifiers_foreach_tex_link(struct Object *ob, TexWalkFunc walk, void *userData);
struct ModifierData *BKE_modifiers_findby_type(const struct Object *ob, ModifierType type);
struct ModifierData *BKE_modifiers_findby_name(const struct Object *ob, const char *name);
struct ModifierData *BKE_modifiers_findby_session_uuid(const struct Object *ob,
const SessionUUID *session_uuid);
void BKE_modifiers_clear_errors(struct Object *ob);
/**
* used for buttons, to find out if the 'draw deformed in edit-mode option is there.
*
* Also used in transform_conversion.c, to detect crazy-space (2nd arg then is NULL).
* Also used for some mesh tools to give warnings.
*/
int BKE_modifiers_get_cage_index(const struct Scene *scene,
struct Object *ob,
int *r_lastPossibleCageIndex,
bool is_virtual);
bool BKE_modifiers_is_modifier_enabled(struct Object *ob, int modifierType);
bool BKE_modifiers_is_softbody_enabled(struct Object *ob);
bool BKE_modifiers_is_cloth_enabled(struct Object *ob);
bool BKE_modifiers_is_particle_enabled(struct Object *ob);
/**
* Takes an object and returns its first selected armature, else just its armature.
* This should work for multiple armatures per object.
*/
struct Object *BKE_modifiers_is_deformed_by_armature(struct Object *ob);
struct Object *BKE_modifiers_is_deformed_by_meshdeform(struct Object *ob);
/**
* Takes an object and returns its first selected lattice, else just its lattice.
* This should work for multiple lattices per object.
*/
struct Object *BKE_modifiers_is_deformed_by_lattice(struct Object *ob);
/**
* Takes an object and returns its first selected curve, else just its curve.
* This should work for multiple curves per object.
*/
struct Object *BKE_modifiers_is_deformed_by_curve(struct Object *ob);
bool BKE_modifiers_uses_multires(struct Object *ob);
bool BKE_modifiers_uses_armature(struct Object *ob, struct bArmature *arm);
bool BKE_modifiers_is_correctable_deformed(const struct Scene *scene, struct Object *ob);
void BKE_modifier_free_temporary_data(struct ModifierData *md);
typedef struct CDMaskLink {
struct CDMaskLink *next;
struct CustomData_MeshMasks mask;
} CDMaskLink;
/**
* Calculates and returns a linked list of CustomData_MeshMasks and modified
* final datamask, indicating the data required by each modifier in the stack
* pointed to by md for correct evaluation, assuming the data indicated by
* final_datamask is required at the end of the stack.
*/
struct CDMaskLink *BKE_modifier_calc_data_masks(const struct Scene *scene,
struct ModifierData *md,
struct CustomData_MeshMasks *final_datamask,
int required_mode,
ModifierData *previewmd,
const struct CustomData_MeshMasks *previewmask);
struct ModifierData *BKE_modifier_get_last_preview(const struct Scene *scene,
struct ModifierData *md,
int required_mode);
typedef struct VirtualModifierData {
ArmatureModifierData amd;
CurveModifierData cmd;
LatticeModifierData lmd;
ShapeKeyModifierData smd;
} VirtualModifierData;
/**
* This is to include things that are not modifiers in the evaluation of the modifier stack,
* for example parenting to an armature.
*/
struct ModifierData *BKE_modifiers_get_virtual_modifierlist(const struct Object *ob,
struct VirtualModifierData *data);
/**
* Ensure modifier correctness when changing `ob->data`.
*/
void BKE_modifiers_test_object(struct Object *ob);
/**
* Here for #do_versions.
*/
void BKE_modifier_mdef_compact_influences(struct ModifierData *md);
/**
* Initializes `path` with either the blend file or temporary directory.
*/
void BKE_modifier_path_init(char *path, int path_maxncpy, const char *name);
const char *BKE_modifier_path_relbase(struct Main *bmain, struct Object *ob);
const char *BKE_modifier_path_relbase_from_global(struct Object *ob);
/* Accessors of original/evaluated modifiers. */
/**
* For a given modifier data, get corresponding original one.
* If the modifier data is already original, return it as-is.
*/
struct ModifierData *BKE_modifier_get_original(const struct Object *object,
struct ModifierData *md);
struct ModifierData *BKE_modifier_get_evaluated(struct Depsgraph *depsgraph,
struct Object *object,
struct ModifierData *md);
/* wrappers for modifier callbacks that ensure valid normals */
struct Mesh *BKE_modifier_modify_mesh(ModifierData *md,
const struct ModifierEvalContext *ctx,
struct Mesh *me);
void BKE_modifier_deform_verts(ModifierData *md,
const struct ModifierEvalContext *ctx,
struct Mesh *me,
float (*vertexCos)[3],
int numVerts);
void BKE_modifier_deform_vertsEM(ModifierData *md,
const struct ModifierEvalContext *ctx,
struct BMEditMesh *em,
struct Mesh *me,
float (*vertexCos)[3],
int numVerts);
/**
* Get evaluated mesh for other evaluated object, which is used as an operand for the modifier,
* e.g. second operand for boolean modifier.
* Note that modifiers in stack always get fully evaluated COW ID pointers,
* never original ones. Makes things simpler.
*/
struct Mesh *BKE_modifier_get_evaluated_mesh_from_evaluated_object(struct Object *ob_eval);
void BKE_modifier_check_uuids_unique_and_report(const struct Object *object);
void BKE_modifier_blend_write(struct BlendWriter *writer,
const struct ID *id_owner,
struct ListBase *modbase);
void BKE_modifier_blend_read_data(struct BlendDataReader *reader,
struct ListBase *lb,
struct Object *ob);
void BKE_modifier_blend_read_lib(struct BlendLibReader *reader, struct Object *ob);
#ifdef __cplusplus
}
#endif
#ifdef __cplusplus
namespace blender::bke {
/**
* A convenience class that can be used to set `ModifierData::execution_time` based on the lifetime
* of this class.
*/
class ScopedModifierTimer {
private:
ModifierData &md_;
double start_time_;
public:
ScopedModifierTimer(ModifierData &md);
~ScopedModifierTimer();
};
} // namespace blender::bke
#endif