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/**
* $Id$
*
* ***** BEGIN GPL/BL DUAL 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. The Blender
* Foundation also sells licenses for use in proprietary software under
* the Blender License. See http://www.blender.org/BL/ for information
* about this.
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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/BL DUAL LICENSE BLOCK *****
*/
#ifndef BKE_DERIVEDMESH_H
#define BKE_DERIVEDMESH_H
/* TODO (Probably)
*
* o Make drawMapped* functions take a predicate function that
* determines whether to draw the edge (this predicate can
* also set color, etc). This will be slightly more general
* and allow some of the functions to be collapsed.
* o Once accessor functions are added then single element draw
* functions can be implemented using primitive accessors.
* o Add function to dispatch to renderer instead of using
* conversion to DLM.
*/
struct MVert;
struct Object;
struct EditMesh;
struct EditVert;
struct EditEdge;
struct EditFace;
struct DispListMesh;
struct ModifierData;
typedef struct DerivedMesh DerivedMesh;
struct DerivedMesh {
/* Misc. Queries */
/* Also called in Editmode */
int (*getNumVerts)(DerivedMesh *dm);
/* Also called in Editmode */
int (*getNumFaces)(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 (*foreachMappedVertEM)(DerivedMesh *dm, void (*func)(void *userData, struct EditVert *vert, float *co, float *no_f, short *no_s), void *userData);
/* Iterate over each mapped vertex in the derived mesh, calling the
* given function with the original vert and the mapped edge's new
* coordinates.
*/
void (*foreachMappedEdgeEM)(DerivedMesh *dm, void (*func)(void *userData, struct EditEdge *edge, float *v0co, float *v1co), void *userData);
/* 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 (*foreachMappedFaceCenterEM)(DerivedMesh *dm, void (*func)(void *userData, struct EditFace *face, float *cent, float *no), void *userData);
/* Convert to new DispListMesh, should be free'd by caller.
*
* If allowShared is true then the caller is committing to not free'ng
* the DerivedMesh before free'ng the DispListMesh, which means that
* certain fields of the returned DispListMesh can safely be share with
* the DerivedMesh's internal data.
*/
struct DispListMesh* (*convertToDispListMesh)(DerivedMesh *dm, int allowShared);
/* Convert to new DispListMesh, should be free'd by caller.
*
* Additionally, allocate and return map arrays. Each map array should be
* have a length corresponding to the returned DLMs totvert, totedge, and
* totface fields respectively.
*
* Each index in the array should give the EditMesh element from which the
* element at the same index in the DLMs vert, edge, or face array was
* derived (which may be null).
*/
struct DispListMesh* (*convertToDispListMeshMapped)(DerivedMesh *dm, int allowShared, struct EditVert ***vertMap_r, struct EditEdge ***edgeMap_r, struct EditFace ***faceMap_r);
/* Iterate over all vertex points, calling DO_MINMAX with given args.
*
* Also called in Editmode
*/
void (*getMinMax)(DerivedMesh *dm, float min_r[3], float max_r[3]);
/* Direct Access Operations */
/* o Can be undefined */
/* o 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 co_r[3]);
/* Fill the array (of length .getNumVerts()) with all vertex locations */
void (*getVertCos)(DerivedMesh *dm, float (*cos_r)[3]);
/* Get vertex normal, undefined if index is not valid */
void (*getVertNo)(DerivedMesh *dm, int index, float no_r[3]);
/* 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, int drawLooseEdges);
/* Draw all edges for which (med->flag&mask)==value */
void (*drawEdgesFlag)(DerivedMesh *dm, unsigned int mask, unsigned int value);
/* 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, int (*setMaterial)(int));
/* Draw all faces
* o If useTwoSided, draw front and back using col arrays
* o col1,col2 are arrays of length numFace*4 of 4 component colors
* in ABGR format, and should be passed as per-face vertex color.
*/
void (*drawFacesColored)(DerivedMesh *dm, int useTwoSided, unsigned char *col1, unsigned char *col2);
/* Draw all faces uses TFace
* o Drawing options too complicated to enumerate, look at code.
*/
void (*drawFacesTex)(DerivedMesh *dm, int (*setDrawParams)(TFace *tf, int matnr));
/* Draw mapped edges as lines
* o Only if !setDrawOptions or setDrawOptions(userData, mapped-edge) returns true
*/
void (*drawMappedEdgesEM)(DerivedMesh *dm, int (*setDrawOptions)(void *userData, struct EditEdge *eed), void *userData);
/* Draw mapped edges as lines with interpolation values
* o Only if !setDrawOptions or setDrawOptions(userData, mapped-edge, mapped-v0, mapped-v1, t) returns true
*
* NOTE: This routine is optional!
*/
void (*drawMappedEdgesInterpEM)(DerivedMesh *dm,
int (*setDrawOptions)(void *userData, struct EditEdge *eed),
void (*setDrawInterpOptions)(void *userData, struct EditEdge *eed, float t),
void *userData);
/* Draw all faces
* o Only if !setDrawOptions or setDrawOptions(userData, mapped-face) returns true
*/
void (*drawMappedFacesEM)(DerivedMesh *dm, int (*setDrawOptions)(void *userData, struct EditFace *efa), void *userData);
void (*release)(DerivedMesh *dm);
};
/* Internal function, just temporarily exposed */
DerivedMesh *derivedmesh_from_displistmesh(struct DispListMesh *dlm, float (*vertexCos)[3], struct EditVert **vertMap, struct EditEdge **edgeMap, struct EditFace **faceMap);
DerivedMesh *mesh_get_derived_final(struct Object *ob, int *needsFree_r);
DerivedMesh *mesh_get_derived_deform(struct Object *ob, int *needsFree_r);
DerivedMesh *mesh_create_derived_for_modifier(struct Object *ob, struct ModifierData *md);
DerivedMesh *mesh_create_derived_render(struct Object *ob);
DerivedMesh *mesh_create_derived_no_deform(struct Object *ob, float (*vertCos)[3]);
DerivedMesh *mesh_create_derived_no_deform_render(struct Object *ob, float (*vertCos)[3]);
DerivedMesh *editmesh_get_derived_base(void);
DerivedMesh *editmesh_get_derived_cage(int *needsFree_r);
DerivedMesh *editmesh_get_derived_cage_and_final(DerivedMesh **final_r, int *cageNeedsFree_r, int *finalNeedsFree_r);
#endif
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