/usr/include/Box2D/Dynamics/b2TimeStep.h is in libbox2d-dev 2.3.0+ds-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 | /*
* 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
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