172 lines
4.8 KiB
C
172 lines
4.8 KiB
C
/*
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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_COLLISION_H__
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#define __BKE_COLLISION_H__
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/** \file BKE_collision.h
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* \ingroup bke
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* \author Daniel Genrich
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*/
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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 CollisionModifierData;
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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 MVertTri;
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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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COLLISION_IN_FUTURE = (1 << 1),
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#ifdef WITH_ELTOPO
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COLLISION_USE_COLLFACE = (1 << 2),
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COLLISION_IS_EDGES = (1 << 3),
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#endif
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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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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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/* mesh-mesh collision */
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#ifdef WITH_ELTOPO /*either ap* or bp* can be set, but not both*/
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float bary[3];
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int ap1, ap2, ap3, collp, bp1, bp2, bp3;
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int collface;
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#else
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int ap1, ap2, ap3, bp1, bp2, bp3;
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#endif
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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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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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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(
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const struct MVert *mvert,
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const struct MVertTri *tri, int tri_num,
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float epsilon);
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void bvhtree_update_from_mvert(
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BVHTree *bvhtree,
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const struct MVert *mvert, const struct MVert *mvert_moving,
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const struct MVertTri *tri, int tri_num,
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bool moving);
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/////////////////////////////////////////////////
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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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void collision_get_collider_velocity(float vel_old[3], float vel_new[3], struct CollisionModifierData *collmd, struct CollPair *collpair);
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/////////////////////////////////////////////////
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// used in effect.c
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/////////////////////////////////////////////////
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/* explicit control over layer mask and dupli recursion */
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struct Object **get_collisionobjects_ext(struct Scene *scene, struct Object *self, struct Group *group, int layer, unsigned int *numcollobj, unsigned int modifier_type, bool dupli);
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struct Object **get_collisionobjects(struct Scene *scene, struct Object *self, struct Group *group, unsigned int *numcollobj, unsigned int modifier_type);
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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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