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/**
* BKE_softbody.h
*
* $Id: BKE_softbody.h
*
* ***** 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) Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL/BL DUAL LICENSE BLOCK *****
*/
#ifndef BKE_SOFTBODY_H
#define BKE_SOFTBODY_H
typedef struct BodyPoint {
float origS[3], origE[3], origT[3], pos[3], vec[3], force[3];
float weight, goal;
float prevpos[3], prevvec[3], prevdx[3], prevdv[3]; /* used for Heun integration */
int nofsprings; int *springs;
} BodyPoint;
typedef struct BodySpring {
int v1, v2;
float len, strength;
} BodySpring;
typedef struct SoftBody {
int totpoint, totspring;
BodyPoint *bpoint;
BodySpring *bspring;
float ctime; // last time calculated
} SoftBody;
/* temporal data, nothing saved in file */
extern void free_softbody(SoftBody *sb);
/* makes totally fresh start situation */
extern void object_to_softbody(Object *ob,float ctime);
/* copy original (but new) situation in softbody, as result of matrices or deform */
void object_update_softbody(Object *ob);
/* copies softbody result back to object (in displist) */
extern void softbody_to_object(Object *ob);
/* go one step in simulation */
extern void object_softbody_step(Object *ob, float ctime);
#endif
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