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