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/*
* ***** 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2013 Blender Foundation
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): Joshua Leung, Sergej Reich
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file DNA_rigidbody_types.h
* \ingroup DNA
* \brief Types and defines for representing Rigid Body entities
*/
#ifndef __DNA_RIGIDBODY_TYPES_H__
#define __DNA_RIGIDBODY_TYPES_H__
#include "DNA_listBase.h"
struct Group;
struct EffectorWeights;
/* ******************************** */
/* RigidBody World */
/* RigidBodyWorld (rbw)
*
* Represents a "simulation scene" existing within the parent scene.
*/
typedef struct RigidBodyWorld {
/* Sim World Settings ------------------------------------------------------------- */
struct EffectorWeights *effector_weights; /* effectors info */
struct Group *group; /* Group containing objects to use for Rigid Bodies */
struct Object **objects; /* Array to access group objects by index, only used at runtime */
int pad;
float ltime; /* last frame world was evaluated for (internal) */
/* cache */
struct PointCache *pointcache;
struct ListBase ptcaches;
int numbodies; /* number of objects in rigid body group */
short steps_per_second; /* number of simulation steps thaken per second */
short num_solver_iterations;/* number of constraint solver iterations made per simulation step */
int flag; /* (eRigidBodyWorld_Flag) settings for this RigidBodyWorld */
float time_scale; /* used to speed up or slow down the simulation */
/* References to Physics Sim objects. Exist at runtime only ---------------------- */
void *physics_world; /* Physics sim world (i.e. btDiscreteDynamicsWorld) */
} RigidBodyWorld;
/* Flags for RigidBodyWorld */
typedef enum eRigidBodyWorld_Flag {
/* should sim world be skipped when evaluating (user setting) */
RBW_FLAG_MUTED = (1<<0),
/* sim data needs to be rebuilt */
RBW_FLAG_NEEDS_REBUILD = (1<<1),
/* usse split impulse when stepping the simulation */
RBW_FLAG_USE_SPLIT_IMPULSE = (1<<2)
} eRigidBodyWorld_Flag;
/* ******************************** */
/* RigidBody Object */
/* RigidBodyObject (rbo)
*
* Represents an object participating in a RigidBody sim.
* This is attached to each object that is currently
* participating in a sim.
*/
typedef struct RigidBodyOb {
/* References to Physics Sim objects. Exist at runtime only */
void *physics_object; /* Physics object representation (i.e. btRigidBody) */
void *physics_shape; /* Collision shape used by physics sim (i.e. btCollisionShape) */
/* General Settings for this RigidBodyOb */
short type; /* (eRigidBodyOb_Type) role of RigidBody in sim */
short shape; /* (eRigidBody_Shape) collision shape to use */
int flag; /* (eRigidBodyOb_Flag) */
int col_groups; /* Collision groups that determines wich rigid bodies can collide with each other */
int pad;
/* Physics Parameters */
float mass; /* how much object 'weighs' (i.e. absolute 'amount of stuff' it holds) */
float friction; /* resistance of object to movement */
float restitution; /* how 'bouncy' object is when it collides */
float margin; /* tolerance for detecting collisions */
float lin_damping; /* damping for linear velocities */
float ang_damping; /* damping for angular velocities */
float lin_sleep_thresh; /* deactivation threshold for linear velocities */
float ang_sleep_thresh; /* deactivation threshold for angular velocities */
float orn[4]; /* rigid body orientation */
float pos[3]; /* rigid body position */
float pad1;
} RigidBodyOb;
/* Participation types for RigidBodyOb */
typedef enum eRigidBodyOb_Type {
/* active geometry participant in simulation. is directly controlled by sim */
RBO_TYPE_ACTIVE = 0,
/* passive geometry participant in simulation. is directly controlled by animsys */
RBO_TYPE_PASSIVE
} eRigidBodyOb_Type;
/* Flags for RigidBodyOb */
typedef enum eRigidBodyOb_Flag {
/* rigidbody is kinematic (controlled by the animation system) */
RBO_FLAG_KINEMATIC = (1<<0),
/* rigidbody needs to be validated (usually set after duplicating and not hooked up yet) */
RBO_FLAG_NEEDS_VALIDATE = (1<<1),
/* rigidbody shape needs refreshing (usually after exiting editmode) */
RBO_FLAG_NEEDS_RESHAPE = (1<<2),
/* rigidbody can be deactivated */
RBO_FLAG_USE_DEACTIVATION = (1<<3),
/* rigidbody is deactivated at the beginning of simulation */
RBO_FLAG_START_DEACTIVATED = (1<<4),
/* rigidbody is not dynamically simulated */
RBO_FLAG_DISABLED = (1<<5),
/* collision margin is not embedded (only used by convex hull shapes for now) */
RBO_FLAG_USE_MARGIN = (1<<6)
} eRigidBodyOb_Flag;
/* RigidBody Collision Shape */
typedef enum eRigidBody_Shape {
/* simple box (i.e. bounding box) */
RB_SHAPE_BOX = 0,
/* sphere */
RB_SHAPE_SPHERE,
/* rounded "pill" shape (i.e. calcium tablets) */
RB_SHAPE_CAPSULE,
/* cylinder (i.e. pringles can) */
RB_SHAPE_CYLINDER,
/* cone (i.e. party hat) */
RB_SHAPE_CONE,
/* convex hull (minimal shrinkwrap encompassing all verts) */
RB_SHAPE_CONVEXH,
/* triangulated mesh */
RB_SHAPE_TRIMESH,
/* concave mesh approximated using primitives */
//RB_SHAPE_COMPOUND,
} eRigidBody_Shape;
/* ******************************** */
#endif /* __DNA_RIGIDBODY_TYPES_H__ */
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