Magic_Game/src/kiwano/2d/Transform.cpp

// Copyright (c) 2016-2018 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.

#include "Transform.h"

namespace kiwano
{
	Transform::Transform()
		: position()
		, rotation(0.f)
		, scale(1.f, 1.f)
		, skew(0.f, 0.f)
	{
	}

	Matrix3x2 Transform::ToMatrix() const
	{
		if (!skew.IsOrigin())
		{
			return Matrix3x2::Skewing(skew) * Matrix3x2::SRT(position, scale, rotation);
		}
		return Matrix3x2::SRT(position, scale, rotation);
	}

	bool Transform::operator== (Transform const& rhs) const
	{
		return position == rhs.position &&
			rotation == rhs.rotation &&
			scale == rhs.scale &&
			skew == rhs.skew;
	}
}