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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);
void (*getMappedVertCoEM)(DerivedMesh *dm, void *vert, float co_r[3]);
/* 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);
/* 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 all edges as lines (no options)
*
* Also called for *final* editmode DerivedMeshes
*/
void (*drawEdges)(DerivedMesh *dm);
/* Draw mapped edges as lines (no options) */
void (*drawMappedEdges)(DerivedMesh *dm);
/* Draw all edges without faces as lines (no options) */
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, 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 vertices as bgl points
* o Only if !setDrawOptions or setDrawOptions(userData, mapped-vert) returns true
*/
void (*drawMappedVertsEM)(DerivedMesh *dm, int (*setDrawOptions)(void *userData, struct EditVert *eve), void *userData);
/* Draw single mapped edge as lines (no options) */
void (*drawMappedEdgeEM)(DerivedMesh *dm, void *edge);
/* 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);
/* Draw vert normals
* o Only if !setDrawOptions or setDrawOptions(userData, mapped-vert) returns true
*/
void (*drawMappedVertNormalsEM)(DerivedMesh *dm, float length, int (*setDrawOptions)(void *userData, struct EditVert *eve), void *userData);
/* Draw face normals
* o Only if !setDrawOptions or setDrawOptions(userData, mapped-face) returns true
*/
void (*drawMappedFaceNormalsEM)(DerivedMesh *dm, float length, int (*setDrawOptions)(void *userData, struct EditFace *efa), void *userData);
/* Draw face centers as bgl points
* o Only if !setDrawOptions or setDrawOptions(userData, mapped-face) returns true
*/
void (*drawMappedFaceCentersEM)(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);
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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