b2_time_step.h

// MIT License
 
// Copyright (c) 2019 Erin Catto
 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
 
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
#ifndef B2_TIME_STEP_H
#define B2_TIME_STEP_H
 
#include "b2_api.h"
#include "b2_math.h"
 
struct B2_API b2Profile
{
    float step;
    float collide;
    float solve;
    float solveInit;
    float solveVelocity;
    float solvePosition;
    float broadphase;
    float solveTOI;
};
 
struct B2_API b2TimeStep
{
    float dt;           // time step
    float inv_dt;       // inverse time step (0 if dt == 0).
    float dtRatio;  // dt * inv_dt0
    int32 velocityIterations;
    int32 positionIterations;
    bool warmStarting;
};
 
struct B2_API b2Position
{
    b2Vec2 c;
    float a;
};
 
struct B2_API b2Velocity
{
    b2Vec2 v;
    float w;
};
 
struct B2_API b2SolverData
{
    b2TimeStep step;
    b2Position* positions;
    b2Velocity* velocities;
};
 
#endif