87 lines
2.8 KiB
C++
87 lines
2.8 KiB
C++
// Copyright (c) 2016-2018 Ember - Nomango
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#pragma once
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#include <math/Vec2.hpp>
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#include <math/Matrix.hpp>
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namespace ember
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{
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namespace math
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{
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/**
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* \~chinese
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* @brief ¶þά·ÅÉä±ä»»
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*/
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template <typename _Ty>
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class TransformT
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{
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public:
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using ValueType = _Ty;
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float rotation; ///< Ðýת
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Vec2T<ValueType> position; ///< ×ø±ê
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Vec2T<ValueType> scale; ///< Ëõ·Å
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Vec2T<ValueType> skew; ///< ´íÇнǶÈ
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public:
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TransformT();
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/// \~chinese
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/// @brief ½«¶þά·ÅÉä±ä»»×ª»»Îª¾ØÕó
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Matrix3x2T<ValueType> ToMatrix() const;
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bool IsFast() const;
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bool operator==(const TransformT &rhs) const;
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};
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template <typename _Ty>
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inline TransformT<_Ty>::TransformT()
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: position(), rotation(0.f), scale(1.f, 1.f), skew(0.f, 0.f)
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{
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}
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template <typename _Ty>
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Matrix3x2T<_Ty> TransformT<_Ty>::ToMatrix() const
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{
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if (!skew.IsOrigin())
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{
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return Matrix3x2T<_Ty>::Skewing(skew) * Matrix3x2T<_Ty>::SRT(position, scale, rotation);
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}
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return Matrix3x2T<_Ty>::SRT(position, scale, rotation);
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}
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template <typename _Ty>
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inline bool TransformT<_Ty>::IsFast() const
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{
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return skew.x == 0.f && skew.y == 0.f && scale.x == 1.f && scale.y == 1.f && rotation == 0.f;
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}
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template <typename _Ty>
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bool TransformT<_Ty>::operator==(const TransformT &rhs) const
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{
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return position == rhs.position && rotation == rhs.rotation && scale == rhs.scale && skew == rhs.skew;
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}
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} // namespace math
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} // namespace ember
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