/* * 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