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 /*
 * 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