Magic_Game/src/kiwano-physics/Global.cpp

// Copyright (c) 2018-2019 Kiwano - Nomango
//
// 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.

#pragma once
#include <kiwano-physics/Global.h>

namespace kiwano
{
namespace physics
{
namespace global
{

namespace
{
float global_scale = 100.f;  // 100 pixels per meters
}

float GetScale()
{
    return global_scale;
}

void SetScale(float scale)
{
    global_scale = scale;
}

float ToPixels(float value)
{
    return value * global_scale;
}

Vec2 ToPixels(const b2Vec2& pos)
{
    return Point(ToPixels(pos.x), ToPixels(pos.y));
}

float ToMeters(float value)
{
    return value / global_scale;
}

b2Vec2 ToMeters(const Vec2& pos)
{
    return b2Vec2(ToMeters(pos.x), ToMeters(pos.y));
}

}  // namespace global

}  // namespace physics
}  // namespace kiwano