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tornavis/source/blender/blenkernel/BKE_DerivedMesh.h

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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*/
#ifndef __BKE_DERIVEDMESH_H__
#define __BKE_DERIVEDMESH_H__
/** \file BKE_DerivedMesh.h
* \ingroup bke
*
* Basic design of the DerivedMesh system:
*
* DerivedMesh is a common set of interfaces for mesh systems.
*
* There are three main mesh data structures in Blender:
* #Mesh, #CDDerivedMesh and #BMesh.
*
* These, and a few others, all implement DerivedMesh interfaces,
* which contains unified drawing interfaces, a few utility interfaces,
* and a bunch of read-only interfaces intended mostly for conversion from
* one format to another.
*
* All Mesh structures in blender make use of CustomData, which is used to store
* per-element attributes and interpolate them (e.g. uvs, vcols, vgroups, etc).
*
* Mesh is the "serialized" structure, used for storing object-mode mesh data
* and also for saving stuff to disk. It's interfaces are also what DerivedMesh
* uses to communicate with.
*
* CDDM is a little mesh library, that uses Mesh data structures in the backend.
* It's mostly used for modifiers, and has the advantages of not taking much
* resources.
*
* BMesh is a full-on brep, used for editmode, some modifiers, etc. It's much
* more capable (if memory-intensive) then CDDM.
*
* DerivedMesh is somewhat hackish. Many places assumes that a DerivedMesh is
* a CDDM (most of the time by simply copying it and converting it to one).
* CDDM is the original structure for modifiers, but has since been superseded
* by BMesh, at least for the foreseeable future.
*/
/*
* Note: This structure is read-only, for all practical purposes.
* At some point in the future, we may want to consider
* creating a replacement structure that implements a proper
* abstract mesh kernel interface. Or, we can leave this
* as it is and stick with using BMesh and CDDM.
*/
#include "DNA_customdata_types.h"
#include "DNA_meshdata_types.h"
#include "BLI_compiler_attrs.h"
#include "BKE_customdata.h"
#include "BKE_bvhutils.h"
struct CCGElem;
struct CCGKey;
struct MVert;
struct MEdge;
struct MFace;
struct MTFace;
struct Object;
struct Scene;
struct Mesh;
struct MLoopNorSpaceArray;
struct BMEditMesh;
struct KeyBlock;
struct ModifierData;
struct MCol;
struct ColorBand;
struct GPUVertexAttribs;
struct GPUDrawObject;
struct BMEditMesh;
struct PBVH;
/* number of sub-elements each mesh element has (for interpolation) */
#define SUB_ELEMS_VERT 0
#define SUB_ELEMS_EDGE 2
#define SUB_ELEMS_FACE 50
/*
* Note: all mface interfaces now officially operate on tessellated data.
* Also, the mface origindex layer indexes mpolys, not mfaces.
*/
typedef struct DMCoNo {
float co[3];
float no[3];
} DMCoNo;
/* keep in sync with MFace/MPoly types */
typedef struct DMFlagMat {
short mat_nr;
char flag;
} DMFlagMat;
typedef enum DerivedMeshType {
DM_TYPE_CDDM,
DM_TYPE_EDITBMESH,
DM_TYPE_CCGDM
} DerivedMeshType;
typedef enum DMDrawOption {
/* the element is hidden or otherwise non-drawable */
DM_DRAW_OPTION_SKIP = 0,
/* normal drawing */
DM_DRAW_OPTION_NORMAL = 1,
/* draw, but don't set the color from mcol */
DM_DRAW_OPTION_NO_MCOL = 2,
/* used in drawMappedFaces, use GL stipple for the face */
DM_DRAW_OPTION_STIPPLE = 3,
} DMDrawOption;
/* Drawing callback types */
typedef int (*DMSetMaterial)(int mat_nr, void *attribs);
typedef int (*DMCompareDrawOptions)(void *userData, int cur_index, int next_index);
typedef void (*DMSetDrawInterpOptions)(void *userData, int index, float t);
typedef DMDrawOption (*DMSetDrawOptions)(void *userData, int index);
typedef DMDrawOption (*DMSetDrawOptionsMappedTex)(void *userData, int origindex, int mat_nr);
typedef DMDrawOption (*DMSetDrawOptionsTex)(struct MTFace *tface, const bool has_vcol, int matnr);
typedef enum DMDrawFlag {
DM_DRAW_USE_COLORS = (1 << 0),
DM_DRAW_ALWAYS_SMOOTH = (1 << 1),
DM_DRAW_USE_ACTIVE_UV = (1 << 2),
DM_DRAW_USE_TEXPAINT_UV = (1 << 3),
} DMDrawFlag;
typedef enum DMForeachFlag {
DM_FOREACH_NOP = 0,
DM_FOREACH_USE_NORMAL = (1 << 0), /* foreachMappedVert, foreachMappedLoop, foreachMappedFaceCenter */
} DMForeachFlag;
typedef enum DMDirtyFlag {
/* dm has valid tessellated faces, but tessellated CDDATA need to be updated. */
DM_DIRTY_TESS_CDLAYERS = 1 << 0,
/* One of the MCOL layers have been updated, force updating of GPUDrawObject's colors buffer.
* This is necessary with modern, VBO draw code, as e.g. in vpaint mode me->mcol may be updated
* without actually rebuilding dm (hence by defautl keeping same GPUDrawObject, and same colors
* buffer, which prevents update during a stroke!). */
DM_DIRTY_MCOL_UPDATE_DRAW = 1 << 1,
/* check this with modifier dependsOnNormals callback to see if normals need recalculation */
DM_DIRTY_NORMALS = 1 << 2,
} DMDirtyFlag;
typedef struct DerivedMesh DerivedMesh;
struct DerivedMesh {
/** Private DerivedMesh data, only for internal DerivedMesh use */
CustomData vertData, edgeData, faceData, loopData, polyData;
int numVertData, numEdgeData, numTessFaceData, numLoopData, numPolyData;
int needsFree; /* checked on ->release, is set to 0 for cached results */
int deformedOnly; /* set by modifier stack if only deformed from original */
BVHCache bvhCache;
struct GPUDrawObject *drawObject;
DerivedMeshType type;
float auto_bump_scale;
DMDirtyFlag dirty;
int totmat; /* total materials. Will be valid only before object drawing. */
struct Material **mat; /* material array. Will be valid only before object drawing */
/* use for converting to BMesh which doesn't store bevel weight and edge crease by default */
char cd_flag;
/** Calculate vert and face normals */
void (*calcNormals)(DerivedMesh *dm);
/** Calculate loop (split) normals */
void (*calcLoopNormals)(DerivedMesh *dm, const bool use_split_normals, const float split_angle);
/** Calculate loop (split) normals, and returns split loop normal spacearr. */
void (*calcLoopNormalsSpaceArray)(DerivedMesh *dm, const bool use_split_normals, const float split_angle,
struct MLoopNorSpaceArray *r_lnors_spacearr);
/** Recalculates mesh tessellation */
void (*recalcTessellation)(DerivedMesh *dm);
/* Misc. Queries */
/* Also called in Editmode */
int (*getNumVerts)(DerivedMesh *dm);
int (*getNumEdges)(DerivedMesh *dm);
int (*getNumTessFaces)(DerivedMesh *dm);
int (*getNumLoops)(DerivedMesh *dm);
int (*getNumPolys)(DerivedMesh *dm);
/** Copy a single vert/edge/tessellated face from the derived mesh into
* *{vert/edge/face}_r. note that the current implementation
* of this function can be quite slow, iterating over all
* elements (editmesh)
*/
void (*getVert)(DerivedMesh *dm, int index, struct MVert *r_vert);
void (*getEdge)(DerivedMesh *dm, int index, struct MEdge *r_edge);
void (*getTessFace)(DerivedMesh *dm, int index, struct MFace *r_face);
/** Return a pointer to the entire array of verts/edges/face from the
* derived mesh. if such an array does not exist yet, it will be created,
* and freed on the next ->release(). consider using getVert/Edge/Face if
* you are only interested in a few verts/edges/faces.
*/
struct MVert *(*getVertArray)(DerivedMesh * dm);
struct MEdge *(*getEdgeArray)(DerivedMesh * dm);
struct MFace *(*getTessFaceArray)(DerivedMesh * dm);
struct MLoop *(*getLoopArray)(DerivedMesh * dm);
struct MPoly *(*getPolyArray)(DerivedMesh * dm);
/** Copy all verts/edges/faces from the derived mesh into
* *{vert/edge/face}_r (must point to a buffer large enough)
*/
void (*copyVertArray)(DerivedMesh *dm, struct MVert *r_vert);
void (*copyEdgeArray)(DerivedMesh *dm, struct MEdge *r_edge);
void (*copyTessFaceArray)(DerivedMesh *dm, struct MFace *r_face);
void (*copyLoopArray)(DerivedMesh *dm, struct MLoop *r_loop);
void (*copyPolyArray)(DerivedMesh *dm, struct MPoly *r_poly);
/** Return a copy of all verts/edges/faces from the derived mesh
* it is the caller's responsibility to free the returned pointer
*/
struct MVert *(*dupVertArray)(DerivedMesh * dm);
struct MEdge *(*dupEdgeArray)(DerivedMesh * dm);
struct MFace *(*dupTessFaceArray)(DerivedMesh * dm);
struct MLoop *(*dupLoopArray)(DerivedMesh * dm);
struct MPoly *(*dupPolyArray)(DerivedMesh * dm);
/** Return a pointer to a single element of vert/edge/face custom data
* from the derived mesh (this gives a pointer to the actual data, not
* a copy)
*/
void *(*getVertData)(DerivedMesh *dm, int index, int type);
void *(*getEdgeData)(DerivedMesh *dm, int index, int type);
void *(*getTessFaceData)(DerivedMesh *dm, int index, int type);
void *(*getPolyData)(DerivedMesh *dm, int index, int type);
/** Return a pointer to the entire array of vert/edge/face custom data
* from the derived mesh (this gives a pointer to the actual data, not
* a copy)
*/
void *(*getVertDataArray)(DerivedMesh *dm, int type);
void *(*getEdgeDataArray)(DerivedMesh *dm, int type);
void *(*getTessFaceDataArray)(DerivedMesh *dm, int type);
void *(*getLoopDataArray)(DerivedMesh *dm, int type);
void *(*getPolyDataArray)(DerivedMesh *dm, int type);
/** Retrieves the base CustomData structures for
* verts/edges/tessfaces/loops/facdes*/
CustomData *(*getVertDataLayout)(DerivedMesh * dm);
CustomData *(*getEdgeDataLayout)(DerivedMesh * dm);
CustomData *(*getTessFaceDataLayout)(DerivedMesh * dm);
CustomData *(*getLoopDataLayout)(DerivedMesh * dm);
CustomData *(*getPolyDataLayout)(DerivedMesh * dm);
/** Copies all customdata for an element source into dst at index dest */
void (*copyFromVertCData)(DerivedMesh *dm, int source, CustomData *dst, int dest);
void (*copyFromEdgeCData)(DerivedMesh *dm, int source, CustomData *dst, int dest);
void (*copyFromFaceCData)(DerivedMesh *dm, int source, CustomData *dst, int dest);
/** Optional grid access for subsurf */
int (*getNumGrids)(DerivedMesh *dm);
int (*getGridSize)(DerivedMesh *dm);
struct CCGElem **(*getGridData)(DerivedMesh * dm);
int *(*getGridOffset)(DerivedMesh * dm);
void (*getGridKey)(DerivedMesh *dm, struct CCGKey *key);
DMFlagMat *(*getGridFlagMats)(DerivedMesh * dm);
unsigned int **(*getGridHidden)(DerivedMesh * dm);
/** Iterate over each mapped vertex in the derived mesh, calling the
* given function with the original vert and the mapped vert's new
* coordinate and normal. For historical reasons the normal can be
* passed as a float or short array, only one should be non-NULL.
*/
void (*foreachMappedVert)(DerivedMesh *dm,
void (*func)(void *userData, int index, const float co[3],
const float no_f[3], const short no_s[3]),
void *userData,
DMForeachFlag flag);
/** Iterate over each mapped edge in the derived mesh, calling the
* given function with the original edge and the mapped edge's new
* coordinates.
*/
void (*foreachMappedEdge)(DerivedMesh *dm,
void (*func)(void *userData, int index,
const float v0co[3], const float v1co[3]),
void *userData);
/** Iterate over each mapped loop in the derived mesh, calling the given function
* with the original loop index and the mapped loops's new coordinate and normal.
*/
void (*foreachMappedLoop)(DerivedMesh *dm,
void (*func)(void *userData, int vertex_index, int face_index,
const float co[3], const float no[3]),
void *userData,
DMForeachFlag flag);
/** Iterate over each mapped face in the derived mesh, calling the
* given function with the original face and the mapped face's (or
* faces') center and normal.
*/
void (*foreachMappedFaceCenter)(DerivedMesh *dm,
void (*func)(void *userData, int index,
const float cent[3], const float no[3]),
void *userData,
DMForeachFlag flag);
/** Iterate over all vertex points, calling DO_MINMAX with given args.
*
* Also called in Editmode
*/
void (*getMinMax)(DerivedMesh *dm, float r_min[3], float r_max[3]);
/** Direct Access Operations
* - Can be undefined
* - Must be defined for modifiers that only deform however */
/** Get vertex location, undefined if index is not valid */
void (*getVertCo)(DerivedMesh *dm, int index, float r_co[3]);
/** Fill the array (of length .getNumVerts()) with all vertex locations */
void (*getVertCos)(DerivedMesh *dm, float (*r_cos)[3]);
/** Get smooth vertex normal, undefined if index is not valid */
void (*getVertNo)(DerivedMesh *dm, int index, float r_no[3]);
void (*getPolyNo)(DerivedMesh *dm, int index, float r_no[3]);
/** Get a map of vertices to faces
*/
const struct MeshElemMap *(*getPolyMap)(struct Object *ob, DerivedMesh *dm);
/** Get the BVH used for paint modes
*/
struct PBVH *(*getPBVH)(struct Object *ob, DerivedMesh *dm);
/* Drawing Operations */
/** Draw all vertices as bgl points (no options) */
void (*drawVerts)(DerivedMesh *dm);
/** Draw edges in the UV mesh (if exists) */
void (*drawUVEdges)(DerivedMesh *dm);
/** Draw all edges as lines (no options)
*
* Also called for *final* editmode DerivedMeshes
*/
void (*drawEdges)(DerivedMesh *dm, bool drawLooseEdges, bool drawAllEdges);
/** Draw all loose edges (edges w/ no adjoining faces) */
void (*drawLooseEdges)(DerivedMesh *dm);
/** Draw all faces
* o Set face normal or vertex normal based on inherited face flag
* o Use inherited face material index to call setMaterial
* o Only if setMaterial returns true
*
* Also called for *final* editmode DerivedMeshes
*/
void (*drawFacesSolid)(DerivedMesh *dm, float (*partial_redraw_planes)[4],
bool fast, DMSetMaterial setMaterial);
/** Draw all faces using MTFace
* - Drawing options too complicated to enumerate, look at code.
*/
void (*drawFacesTex)(DerivedMesh *dm,
DMSetDrawOptionsTex setDrawOptions,
DMCompareDrawOptions compareDrawOptions,
void *userData, DMDrawFlag uvflag);
/** Draw all faces with GLSL materials
* o setMaterial is called for every different material nr
* o Only if setMaterial returns true
*/
void (*drawFacesGLSL)(DerivedMesh *dm, DMSetMaterial setMaterial);
/** Draw mapped faces (no color, or texture)
* - Only if !setDrawOptions or
* setDrawOptions(userData, mapped-face-index, r_drawSmooth)
* returns true
*
* If drawSmooth is set to true then vertex normals should be set and
* glShadeModel called with GL_SMOOTH. Otherwise the face normal should
* be set and glShadeModel called with GL_FLAT.
*
* The setDrawOptions is allowed to not set drawSmooth (for example, when
* lighting is disabled), in which case the implementation should draw as
* smooth shaded.
*/
void (*drawMappedFaces)(DerivedMesh *dm,
DMSetDrawOptions setDrawOptions,
DMSetMaterial setMaterial,
DMCompareDrawOptions compareDrawOptions,
void *userData,
DMDrawFlag flag);
/** Draw mapped faces using MTFace
* - Drawing options too complicated to enumerate, look at code.
*/
void (*drawMappedFacesTex)(DerivedMesh *dm,
DMSetDrawOptionsMappedTex setDrawOptions,
DMCompareDrawOptions compareDrawOptions,
void *userData, DMDrawFlag uvflag);
/** Draw mapped faces with GLSL materials
* - setMaterial is called for every different material nr
* - setDrawOptions is called for every face
* - Only if setMaterial and setDrawOptions return true
*/
void (*drawMappedFacesGLSL)(DerivedMesh *dm,
DMSetMaterial setMaterial,
DMSetDrawOptions setDrawOptions,
void *userData);
/** Draw mapped edges as lines
* - Only if !setDrawOptions or setDrawOptions(userData, mapped-edge)
* returns true
*/
void (*drawMappedEdges)(DerivedMesh *dm,
DMSetDrawOptions setDrawOptions,
void *userData);
/** Draw mapped edges as lines with interpolation values
* - Only if !setDrawOptions or
* setDrawOptions(userData, mapped-edge, mapped-v0, mapped-v1, t)
* returns true
*
* NOTE: This routine is optional!
*/
void (*drawMappedEdgesInterp)(DerivedMesh *dm,
DMSetDrawOptions setDrawOptions,
DMSetDrawInterpOptions setDrawInterpOptions,
void *userData);
/** Draw all faces with materials
* - setMaterial is called for every different material nr
* - setFace is called to verify if a face must be hidden
*/
void (*drawMappedFacesMat)(DerivedMesh *dm,
void (*setMaterial)(void *userData, int matnr, void *attribs),
bool (*setFace)(void *userData, int index), void *userData);
/** Release reference to the DerivedMesh. This function decides internally
* if the DerivedMesh will be freed, or cached for later use. */
void (*release)(DerivedMesh *dm);
};
/** utility function to initialize a DerivedMesh's function pointers to
* the default implementation (for those functions which have a default)
*/
void DM_init_funcs(DerivedMesh *dm);
/** utility function to initialize a DerivedMesh for the desired number
* of vertices, edges and faces (doesn't allocate memory for them, just
* sets up the custom data layers)
*/
void DM_init(DerivedMesh *dm, DerivedMeshType type, int numVerts, int numEdges,
int numFaces, int numLoops, int numPolys);
/** utility function to initialize a DerivedMesh for the desired number
* of vertices, edges and faces, with a layer setup copied from source
*/
void DM_from_template(DerivedMesh *dm, DerivedMesh *source,
DerivedMeshType type,
int numVerts, int numEdges, int numFaces,
int numLoops, int numPolys);
/** utility function to release a DerivedMesh's layers
* returns 1 if DerivedMesh has to be released by the backend, 0 otherwise
*/
int DM_release(DerivedMesh *dm);
/** utility function to convert a DerivedMesh to a Mesh
*/
void DM_to_mesh(DerivedMesh *dm, struct Mesh *me, struct Object *ob, CustomDataMask mask, bool take_ownership);
struct BMEditMesh *DM_to_editbmesh(struct DerivedMesh *dm,
struct BMEditMesh *existing, const bool do_tessellate);
/* conversion to bmesh only */
void DM_to_bmesh_ex(struct DerivedMesh *dm, struct BMesh *bm, const bool calc_face_normal);
struct BMesh *DM_to_bmesh(struct DerivedMesh *dm, const bool calc_face_normal);
/** Utility function to convert a DerivedMesh to a shape key block */
void DM_to_meshkey(DerivedMesh *dm, struct Mesh *me, struct KeyBlock *kb);
/** set the CD_FLAG_NOCOPY flag in custom data layers where the mask is
* zero for the layer type, so only layer types specified by the mask
* will be copied
*/
void DM_set_only_copy(DerivedMesh *dm, CustomDataMask mask);
/* adds a vertex/edge/face custom data layer to a DerivedMesh, optionally
* backed by an external data array
* alloctype defines how the layer is allocated or copied, and how it is
* freed, see BKE_customdata.h for the different options
*/
void DM_add_vert_layer(struct DerivedMesh *dm, int type, int alloctype,
void *layer);
void DM_add_edge_layer(struct DerivedMesh *dm, int type, int alloctype,
void *layer);
void DM_add_tessface_layer(struct DerivedMesh *dm, int type, int alloctype,
void *layer);
void DM_add_loop_layer(DerivedMesh *dm, int type, int alloctype,
void *layer);
void DM_add_poly_layer(struct DerivedMesh *dm, int type, int alloctype,
void *layer);
/* custom data access functions
* return pointer to data from first layer which matches type
* if they return NULL for valid indices, data doesn't exist
* note these return pointers - any change modifies the internals of the mesh
*/
void *DM_get_vert_data(struct DerivedMesh *dm, int index, int type);
void *DM_get_edge_data(struct DerivedMesh *dm, int index, int type);
void *DM_get_tessface_data(struct DerivedMesh *dm, int index, int type);
void *DM_get_poly_data(struct DerivedMesh *dm, int index, int type);
/* custom data layer access functions
* return pointer to first data layer which matches type (a flat array)
* if they return NULL, data doesn't exist
* note these return pointers - any change modifies the internals of the mesh
*/
void *DM_get_vert_data_layer(struct DerivedMesh *dm, int type);
void *DM_get_edge_data_layer(struct DerivedMesh *dm, int type);
void *DM_get_tessface_data_layer(struct DerivedMesh *dm, int type);
void *DM_get_poly_data_layer(struct DerivedMesh *dm, int type);
void *DM_get_loop_data_layer(struct DerivedMesh *dm, int type);
/* custom data setting functions
* copy supplied data into first layer of type using layer's copy function
* (deep copy if appropriate)
*/
void DM_set_vert_data(struct DerivedMesh *dm, int index, int type, void *data);
void DM_set_edge_data(struct DerivedMesh *dm, int index, int type, void *data);
void DM_set_tessface_data(struct DerivedMesh *dm, int index, int type, void *data);
/* custom data copy functions
* copy count elements from source_index in source to dest_index in dest
* these copy all layers for which the CD_FLAG_NOCOPY flag is not set
*/
void DM_copy_vert_data(struct DerivedMesh *source, struct DerivedMesh *dest,
int source_index, int dest_index, int count);
void DM_copy_edge_data(struct DerivedMesh *source, struct DerivedMesh *dest,
int source_index, int dest_index, int count);
void DM_copy_tessface_data(struct DerivedMesh *source, struct DerivedMesh *dest,
int source_index, int dest_index, int count);
void DM_copy_loop_data(struct DerivedMesh *source, struct DerivedMesh *dest,
int source_index, int dest_index, int count);
void DM_copy_poly_data(struct DerivedMesh *source, struct DerivedMesh *dest,
int source_index, int dest_index, int count);
/* custom data free functions
* free count elements, starting at index
* they free all layers for which the CD_FLAG_NOCOPY flag is not set
*/
void DM_free_vert_data(struct DerivedMesh *dm, int index, int count);
void DM_free_edge_data(struct DerivedMesh *dm, int index, int count);
void DM_free_tessface_data(struct DerivedMesh *dm, int index, int count);
void DM_free_loop_data(struct DerivedMesh *dm, int index, int count);
void DM_free_poly_data(struct DerivedMesh *dm, int index, int count);
/*sets up mpolys for a DM based on face iterators in source*/
void DM_DupPolys(DerivedMesh *source, DerivedMesh *target);
void DM_ensure_normals(DerivedMesh *dm);
void DM_ensure_tessface(DerivedMesh *dm);
void DM_update_tessface_data(DerivedMesh *dm);
void DM_update_materials(DerivedMesh *dm, struct Object *ob);
struct MTFace *DM_paint_uvlayer_active_get(DerivedMesh *dm, int mat_nr);
/** interpolates vertex data from the vertices indexed by src_indices in the
* source mesh using the given weights and stores the result in the vertex
* indexed by dest_index in the dest mesh
*/
void DM_interp_vert_data(struct DerivedMesh *source, struct DerivedMesh *dest,
int *src_indices, float *weights,
int count, int dest_index);
/** interpolates edge data from the edges indexed by src_indices in the
* source mesh using the given weights and stores the result in the edge indexed
* by dest_index in the dest mesh.
* if weights is NULL, all weights default to 1.
* if vert_weights is non-NULL, any per-vertex edge data is interpolated using
* vert_weights[i] multiplied by weights[i].
*/
typedef float EdgeVertWeight[SUB_ELEMS_EDGE][SUB_ELEMS_EDGE];
void DM_interp_edge_data(struct DerivedMesh *source, struct DerivedMesh *dest,
int *src_indices,
float *weights, EdgeVertWeight *vert_weights,
int count, int dest_index);
/** interpolates face data from the faces indexed by src_indices in the
* source mesh using the given weights and stores the result in the face indexed
* by dest_index in the dest mesh.
* if weights is NULL, all weights default to 1.
* if vert_weights is non-NULL, any per-vertex face data is interpolated using
* vert_weights[i] multiplied by weights[i].
*/
typedef float FaceVertWeight[SUB_ELEMS_FACE][SUB_ELEMS_FACE];
void DM_interp_tessface_data(struct DerivedMesh *source, struct DerivedMesh *dest,
int *src_indices,
float *weights, FaceVertWeight *vert_weights,
int count, int dest_index);
void DM_swap_tessface_data(struct DerivedMesh *dm, int index, const int *corner_indices);
void DM_interp_loop_data(struct DerivedMesh *source, struct DerivedMesh *dest,
int *src_indices,
float *weights, int count, int dest_index);
void DM_interp_poly_data(struct DerivedMesh *source, struct DerivedMesh *dest,
int *src_indices,
float *weights, int count, int dest_index);
/* Temporary? A function to give a colorband to derivedmesh for vertexcolor ranges */
void vDM_ColorBand_store(const struct ColorBand *coba, const char alert_color[4]);
/* UNUSED */
#if 0
/** Simple function to get me->totvert amount of vertices/normals,
* correctly deformed and subsurfered. Needed especially when vertexgroups are involved.
* In use now by vertex/weight paint and particles */
DMCoNo *mesh_get_mapped_verts_nors(struct Scene *scene, struct Object *ob);
#endif
void mesh_get_mapped_verts_coords(DerivedMesh *dm, float (*r_cos)[3], const int totcos);
/* */
DerivedMesh *mesh_get_derived_final(struct Scene *scene, struct Object *ob,
CustomDataMask dataMask);
DerivedMesh *mesh_get_derived_deform(struct Scene *scene, struct Object *ob,
CustomDataMask dataMask);
DerivedMesh *mesh_create_derived_for_modifier(struct Scene *scene, struct Object *ob,
struct ModifierData *md, int build_shapekey_layers);
DerivedMesh *mesh_create_derived_render(struct Scene *scene, struct Object *ob,
CustomDataMask dataMask);
DerivedMesh *getEditDerivedBMesh(struct BMEditMesh *em, struct Object *ob,
float (*vertexCos)[3]);
DerivedMesh *mesh_create_derived_index_render(struct Scene *scene, struct Object *ob, CustomDataMask dataMask, int index);
/* same as above but wont use render settings */
DerivedMesh *mesh_create_derived(struct Mesh *me, float (*vertCos)[3]);
DerivedMesh *mesh_create_derived_view(struct Scene *scene, struct Object *ob,
CustomDataMask dataMask);
DerivedMesh *mesh_create_derived_no_deform(struct Scene *scene, struct Object *ob,
float (*vertCos)[3],
CustomDataMask dataMask);
DerivedMesh *mesh_create_derived_no_deform_render(struct Scene *scene, struct Object *ob,
float (*vertCos)[3],
CustomDataMask dataMask);
/* for gameengine */
DerivedMesh *mesh_create_derived_no_virtual(struct Scene *scene, struct Object *ob, float (*vertCos)[3],
CustomDataMask dataMask);
DerivedMesh *mesh_create_derived_physics(struct Scene *scene, struct Object *ob, float (*vertCos)[3],
CustomDataMask dataMask);
DerivedMesh *editbmesh_get_derived_base(struct Object *, struct BMEditMesh *em);
DerivedMesh *editbmesh_get_derived_cage(struct Scene *scene, struct Object *,
struct BMEditMesh *em, CustomDataMask dataMask);
DerivedMesh *editbmesh_get_derived_cage_and_final(struct Scene *scene, struct Object *,
struct BMEditMesh *em, DerivedMesh **r_final,
CustomDataMask dataMask);
DerivedMesh *object_get_derived_final(struct Object *ob, const bool for_render);
float (*editbmesh_get_vertex_cos(struct BMEditMesh *em, int *r_numVerts))[3];
bool editbmesh_modifier_is_enabled(struct Scene *scene, struct ModifierData *md, DerivedMesh *dm);
void makeDerivedMesh(struct Scene *scene, struct Object *ob, struct BMEditMesh *em,
CustomDataMask dataMask, int build_shapekey_layers);
/** returns an array of deform matrices for crazyspace correction, and the
* number of modifiers left */
int editbmesh_get_first_deform_matrices(struct Scene *, struct Object *, struct BMEditMesh *em,
float (**deformmats)[3][3], float (**deformcos)[3]);
void weight_to_rgb(float r_rgb[3], const float weight);
/** Update the weight MCOL preview layer.
* If weights are NULL, use object's active vgroup(s).
* Else, weights must be an array of weight float values.
* If indices is NULL, it must be of numVerts length.
* Else, it must be of num length, as indices, which contains vertices' idx to apply weights to.
* (other vertices are assumed zero weight).
*/
void DM_update_weight_mcol(struct Object *ob, struct DerivedMesh *dm, int const draw_flag,
float *weights, int num, const int *indices);
/** convert layers requested by a GLSL material to actually available layers in
* the DerivedMesh, with both a pointer for arrays and an offset for editmesh */
typedef struct DMVertexAttribs {
struct {
struct MTFace *array;
int em_offset, gl_index, gl_texco;
} tface[MAX_MTFACE];
struct {
struct MCol *array;
int em_offset, gl_index;
} mcol[MAX_MCOL];
struct {
float (*array)[4];
int em_offset, gl_index;
} tang;
struct {
float (*array)[3];
int em_offset, gl_index, gl_texco;
} orco;
int tottface, totmcol, tottang, totorco;
} DMVertexAttribs;
void DM_vertex_attributes_from_gpu(DerivedMesh *dm,
struct GPUVertexAttribs *gattribs, DMVertexAttribs *attribs);
void DM_draw_attrib_vertex(DMVertexAttribs *attribs, int a, int index, int vert);
void DM_add_tangent_layer(DerivedMesh *dm);
void DM_calc_auto_bump_scale(DerivedMesh *dm);
/** Set object's bounding box based on DerivedMesh min/max data */
void DM_set_object_boundbox(struct Object *ob, DerivedMesh *dm);
void DM_init_origspace(DerivedMesh *dm);
/* debug only */
#ifndef NDEBUG
char *DM_debug_info(DerivedMesh *dm);
void DM_debug_print(DerivedMesh *dm);
void DM_debug_print_cdlayers(CustomData *cdata);
bool DM_is_valid(DerivedMesh *dm);
#endif
BLI_INLINE int DM_origindex_mface_mpoly(const int *index_mf_to_mpoly, const int *index_mp_to_orig, const int i) ATTR_NONNULL(1);
BLI_INLINE int DM_origindex_mface_mpoly(const int *index_mf_to_mpoly, const int *index_mp_to_orig, const int i)
{
const int j = index_mf_to_mpoly[i];
return (j != ORIGINDEX_NONE) ? (index_mp_to_orig ? index_mp_to_orig[j] : j) : ORIGINDEX_NONE;
}
struct MVert *DM_get_vert_array(struct DerivedMesh *dm, bool *allocated);
struct MEdge *DM_get_edge_array(struct DerivedMesh *dm, bool *allocated);
struct MLoop *DM_get_loop_array(struct DerivedMesh *dm, bool *allocated);
struct MPoly *DM_get_poly_array(struct DerivedMesh *dm, bool *allocated);
struct MFace *DM_get_tessface_array(struct DerivedMesh *dm, bool *allocated);
#endif /* __BKE_DERIVEDMESH_H__ */
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