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/**
* BKE_cloth.h
*
* $Id$
*
* ***** 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., 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): Daniel Genrich
*
* ***** END GPL LICENSE BLOCK *****
*/
#ifndef BKE_COLLISIONS_H
#define BKE_COLLISIONS_H
#include <math.h>
#include <float.h>
#include <stdlib.h>
#include <string.h>
/* types */
#include "BLI_linklist.h"
#include "BKE_collision.h"
#include "BKE_customdata.h"
#include "BKE_DerivedMesh.h"
#include "DNA_cloth_types.h"
#include "DNA_customdata_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_modifier_types.h"
#include "DNA_object_types.h"
#include "BLI_kdopbvh.h"
struct Object;
struct Scene;
struct Cloth;
struct MFace;
struct DerivedMesh;
struct ClothModifierData;
////////////////////////////////////////
// used for collisions in collision.c
////////////////////////////////////////
/* COLLISION FLAGS */
typedef enum
{
COLLISION_IN_FUTURE = ( 1 << 1 ),
} COLLISION_FLAGS;
////////////////////////////////////////
// used for collisions in collision.c
////////////////////////////////////////
/* used for collisions in collision.c */
typedef struct CollPair
{
unsigned int face1; // cloth face
unsigned int face2; // object face
double distance; // magnitude of vector
float normal[3];
float vector[3]; // unnormalized collision vector: p2-p1
float pa[3], pb[3]; // collision point p1 on face1, p2 on face2
int flag;
float time; // collision time, from 0 up to 1
int ap1, ap2, ap3, bp1, bp2, bp3;
int pointsb[4];
}
CollPair;
/* used for collisions in collision.c */
typedef struct EdgeCollPair
{
unsigned int p11, p12, p21, p22;
float normal[3];
float vector[3];
float time;
int lastsign;
float pa[3], pb[3]; // collision point p1 on face1, p2 on face2
}
EdgeCollPair;
/* used for collisions in collision.c */
typedef struct FaceCollPair
{
unsigned int p11, p12, p13, p21;
float normal[3];
float vector[3];
float time;
int lastsign;
float pa[3], pb[3]; // collision point p1 on face1, p2 on face2
}
FaceCollPair;
////////////////////////////////////////
/////////////////////////////////////////////////
// forward declarations
/////////////////////////////////////////////////
/////////////////////////////////////////////////
// used in modifier.c from collision.c
/////////////////////////////////////////////////
BVHTree *bvhtree_build_from_mvert ( MFace *mfaces, unsigned int numfaces, MVert *x, unsigned int numverts, float epsilon );
void bvhtree_update_from_mvert ( BVHTree * bvhtree, MFace *faces, int numfaces, MVert *x, MVert *xnew, int numverts, int moving );
/////////////////////////////////////////////////
LinkNode *BLI_linklist_append_fast ( LinkNode **listp, void *ptr );
// move Collision modifier object inter-frame with step = [0,1]
// defined in collisions.c
void collision_move_object ( CollisionModifierData *collmd, float step, float prevstep );
// interface for collision functions
void collisions_compute_barycentric ( float pv[3], float p1[3], float p2[3], float p3[3], float *w1, float *w2, float *w3 );
void interpolateOnTriangle ( float to[3], float v1[3], float v2[3], float v3[3], double w1, double w2, double w3 );
/////////////////////////////////////////////////
// used in effect.c
/////////////////////////////////////////////////
Object **get_collisionobjects(struct Scene *scene, Object *self, int *numcollobj);
/////////////////////////////////////////////////
/////////////////////////////////////////////////
#endif
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