158 lines
4.4 KiB
C
158 lines
4.4 KiB
C
/**
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* BKE_cloth.h
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*
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* $Id$
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*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) Blender Foundation.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): Daniel Genrich
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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#ifndef BKE_COLLISIONS_H
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#define BKE_COLLISIONS_H
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#include <math.h>
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#include <float.h>
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#include <stdlib.h>
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#include <string.h>
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/* types */
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#include "BKE_collision.h"
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#include "DNA_cloth_types.h"
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#include "BLI_kdopbvh.h"
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struct Cloth;
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struct ClothModifierData;
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struct CollisionModifierData;
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struct DerivedMesh;
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struct Group;
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struct MFace;
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struct MVert;
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struct Object;
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struct Scene;
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struct LinkNode;
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////////////////////////////////////////
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// used for collisions in collision.c
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////////////////////////////////////////
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/* COLLISION FLAGS */
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typedef enum
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{
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COLLISION_IN_FUTURE = ( 1 << 1 ),
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} COLLISION_FLAGS;
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////////////////////////////////////////
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// used for collisions in collision.c
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////////////////////////////////////////
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/* used for collisions in collision.c */
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typedef struct CollPair
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{
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unsigned int face1; // cloth face
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unsigned int face2; // object face
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double distance; // magnitude of vector
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float normal[3];
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float vector[3]; // unnormalized collision vector: p2-p1
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float pa[3], pb[3]; // collision point p1 on face1, p2 on face2
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int flag;
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float time; // collision time, from 0 up to 1
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int ap1, ap2, ap3, bp1, bp2, bp3;
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int pointsb[4];
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}
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CollPair;
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/* used for collisions in collision.c */
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typedef struct EdgeCollPair
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{
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unsigned int p11, p12, p21, p22;
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float normal[3];
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float vector[3];
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float time;
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int lastsign;
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float pa[3], pb[3]; // collision point p1 on face1, p2 on face2
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}
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EdgeCollPair;
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/* used for collisions in collision.c */
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typedef struct FaceCollPair
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{
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unsigned int p11, p12, p13, p21;
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float normal[3];
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float vector[3];
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float time;
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int lastsign;
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float pa[3], pb[3]; // collision point p1 on face1, p2 on face2
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}
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FaceCollPair;
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////////////////////////////////////////
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/////////////////////////////////////////////////
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// forward declarations
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/////////////////////////////////////////////////
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/////////////////////////////////////////////////
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// used in modifier.c from collision.c
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/////////////////////////////////////////////////
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BVHTree *bvhtree_build_from_mvert ( struct MFace *mfaces, unsigned int numfaces, struct MVert *x, unsigned int numverts, float epsilon );
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void bvhtree_update_from_mvert ( BVHTree * bvhtree, struct MFace *faces, int numfaces, struct MVert *x, struct MVert *xnew, int numverts, int moving );
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/////////////////////////////////////////////////
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struct LinkNode *BLI_linklist_append_fast ( struct LinkNode **listp, void *ptr );
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// move Collision modifier object inter-frame with step = [0,1]
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// defined in collisions.c
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void collision_move_object ( struct CollisionModifierData *collmd, float step, float prevstep );
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// interface for collision functions
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void collisions_compute_barycentric ( float pv[3], float p1[3], float p2[3], float p3[3], float *w1, float *w2, float *w3 );
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void interpolateOnTriangle ( float to[3], float v1[3], float v2[3], float v3[3], double w1, double w2, double w3 );
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/////////////////////////////////////////////////
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// used in effect.c
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/////////////////////////////////////////////////
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struct Object **get_collisionobjects(struct Scene *scene, struct Object *self, struct Group *group, int *numcollobj);
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typedef struct ColliderCache {
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struct ColliderCache *next, *prev;
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struct Object *ob;
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struct CollisionModifierData *collmd;
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} ColliderCache;
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struct ListBase *get_collider_cache(struct Scene *scene, struct Object *self, struct Group *group);
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void free_collider_cache(struct ListBase **colliders);
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/////////////////////////////////////////////////
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/////////////////////////////////////////////////
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#endif
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