71 lines
		
	
	
		
			1.7 KiB
		
	
	
	
		
			C
		
	
	
	
		
		
			
		
	
	
			71 lines
		
	
	
		
			1.7 KiB
		
	
	
	
		
			C
		
	
	
	
|  | /*
 | ||
|  | * Copyright (c) 2006-2011 Erin Catto http://www.box2d.org
 | ||
|  | * | ||
|  | * This software is provided 'as-is', without any express or implied | ||
|  | * warranty.  In no event will the authors be held liable for any damages | ||
|  | * arising from the use of this software. | ||
|  | * Permission is granted to anyone to use this software for any purpose, | ||
|  | * including commercial applications, and to alter it and redistribute it | ||
|  | * freely, subject to the following restrictions: | ||
|  | * 1. The origin of this software must not be misrepresented; you must not | ||
|  | * claim that you wrote the original software. If you use this software | ||
|  | * in a product, an acknowledgment in the product documentation would be | ||
|  | * appreciated but is not required. | ||
|  | * 2. Altered source versions must be plainly marked as such, and must not be | ||
|  | * misrepresented as being the original software. | ||
|  | * 3. This notice may not be removed or altered from any source distribution. | ||
|  | */ | ||
|  | 
 | ||
|  | #ifndef B2_TIME_STEP_H
 | ||
|  | #define B2_TIME_STEP_H
 | ||
|  | 
 | ||
|  | #include "Box2D/Common/b2Math.h"
 | ||
|  | 
 | ||
|  | /// Profiling data. Times are in milliseconds.
 | ||
|  | struct b2Profile | ||
|  | { | ||
|  | 	float32 step; | ||
|  | 	float32 collide; | ||
|  | 	float32 solve; | ||
|  | 	float32 solveInit; | ||
|  | 	float32 solveVelocity; | ||
|  | 	float32 solvePosition; | ||
|  | 	float32 broadphase; | ||
|  | 	float32 solveTOI; | ||
|  | }; | ||
|  | 
 | ||
|  | /// This is an internal structure.
 | ||
|  | struct b2TimeStep | ||
|  | { | ||
|  | 	float32 dt;			// time step
 | ||
|  | 	float32 inv_dt;		// inverse time step (0 if dt == 0).
 | ||
|  | 	float32 dtRatio;	// dt * inv_dt0
 | ||
|  | 	int32 velocityIterations; | ||
|  | 	int32 positionIterations; | ||
|  | 	bool warmStarting; | ||
|  | }; | ||
|  | 
 | ||
|  | /// This is an internal structure.
 | ||
|  | struct b2Position | ||
|  | { | ||
|  | 	b2Vec2 c; | ||
|  | 	float32 a; | ||
|  | }; | ||
|  | 
 | ||
|  | /// This is an internal structure.
 | ||
|  | struct b2Velocity | ||
|  | { | ||
|  | 	b2Vec2 v; | ||
|  | 	float32 w; | ||
|  | }; | ||
|  | 
 | ||
|  | /// Solver Data
 | ||
|  | struct b2SolverData | ||
|  | { | ||
|  | 	b2TimeStep step; | ||
|  | 	b2Position* positions; | ||
|  | 	b2Velocity* velocities; | ||
|  | }; | ||
|  | 
 | ||
|  | #endif
 |