Magic_Game/core/utils/Transform.cpp

// Copyright (c) 2016-2018 Easy2D - 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 "..\e2dutil.h"


namespace easy2d
{
	Transform::Transform()
		: position()
		, size()
		, scale_x(1.f)
		, scale_y(1.f)
		, rotation(0)
		, skew_x(0)
		, skew_y(0)
		, pivot_x(0)
		, pivot_y(0)
	{
	}

	Transform::operator D2D1::Matrix3x2F() const
	{
		auto pivot = D2D1::Point2F(size.width * pivot_x, size.height * pivot_y);
		auto matrix = D2D1::Matrix3x2F::Scale(
			scale_x,
			scale_y,
			pivot
		) * D2D1::Matrix3x2F::Skew(
			skew_x,
			skew_y,
			pivot
		) * D2D1::Matrix3x2F::Rotation(
			rotation,
			pivot
		) * D2D1::Matrix3x2F::Translation(
			position.x - pivot.x,
			position.y - pivot.y
		);
		return matrix;
	}

	bool Transform::operator==(const Transform & other) const
	{
		return position == other.position &&
			size == other.size &&
			scale_x == other.scale_x &&
			scale_y == other.scale_y &&
			skew_x == other.skew_x &&
			skew_y == other.skew_y &&
			rotation == other.rotation &&
			pivot_x == other.pivot_x &&
			pivot_y == other.pivot_y;
	}
}