mirror of
https://github.com/cwinfo/matterbridge.git
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117 lines
4.0 KiB
C
117 lines
4.0 KiB
C
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/*
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* Copyright (c) 2020 Samsung Electronics Co., Ltd. All rights reserved.
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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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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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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 THE
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* SOFTWARE.
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*/
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#ifndef VMATRIX_H
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#define VMATRIX_H
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#include "vector_vglobal.h"
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#include "vector_vpoint.h"
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#include "vector_vrect.h"
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V_BEGIN_NAMESPACE
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struct VMatrixData;
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class VMatrix {
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public:
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enum class Axis { X, Y, Z };
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enum class MatrixType: unsigned char {
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None = 0x00,
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Translate = 0x01,
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Scale = 0x02,
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Rotate = 0x04,
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Shear = 0x08,
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Project = 0x10
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};
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VMatrix() = default;
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bool isAffine() const;
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bool isIdentity() const;
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bool isInvertible() const;
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bool isScaling() const;
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bool isRotating() const;
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bool isTranslating() const;
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MatrixType type() const;
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inline float determinant() const;
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float m_11() const { return m11;}
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float m_12() const { return m12;}
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float m_13() const { return m13;}
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float m_21() const { return m21;}
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float m_22() const { return m22;}
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float m_23() const { return m23;}
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float m_tx() const { return mtx;}
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float m_ty() const { return mty;}
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float m_33() const { return m33;}
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VMatrix &translate(VPointF pos) { return translate(pos.x(), pos.y()); }
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VMatrix &translate(float dx, float dy);
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VMatrix &scale(VPointF s) { return scale(s.x(), s.y()); }
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VMatrix &scale(float sx, float sy);
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VMatrix &shear(float sh, float sv);
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VMatrix &rotate(float a, Axis axis = VMatrix::Axis::Z);
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VMatrix &rotateRadians(float a, Axis axis = VMatrix::Axis::Z);
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VPointF map(const VPointF &p) const;
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inline VPointF map(float x, float y) const;
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VRect map(const VRect &r) const;
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V_REQUIRED_RESULT VMatrix inverted(bool *invertible = nullptr) const;
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V_REQUIRED_RESULT VMatrix adjoint() const;
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VMatrix operator*(const VMatrix &o) const;
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VMatrix & operator*=(const VMatrix &);
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VMatrix & operator*=(float mul);
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VMatrix & operator/=(float div);
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bool operator==(const VMatrix &) const;
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bool operator!=(const VMatrix &) const;
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bool fuzzyCompare(const VMatrix &) const;
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float scale() const;
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private:
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friend struct VSpanData;
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float m11{1}, m12{0}, m13{0};
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float m21{0}, m22{1}, m23{0};
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float mtx{0}, mty{0}, m33{1};
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mutable MatrixType mType{MatrixType::None};
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mutable MatrixType dirty{MatrixType::None};
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};
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inline float VMatrix::scale() const
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{
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constexpr float SQRT_2 = 1.41421f;
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VPointF p1(0, 0);
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VPointF p2(SQRT_2, SQRT_2);
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p1 = map(p1);
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p2 = map(p2);
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VPointF final = p2 - p1;
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return std::sqrt(final.x() * final.x() + final.y() * final.y()) / 2.0f;
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}
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inline VPointF VMatrix::map(float x, float y) const
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{
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return map(VPointF(x, y));
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}
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V_END_NAMESPACE
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#endif // VMATRIX_H
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