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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Forward.h>
#include <LibGfx/Forward.h>
namespace Gfx {
class AffineTransform {
public:
AffineTransform()
: m_values { 1, 0, 0, 1, 0, 0 }
{
}
AffineTransform(float a, float b, float c, float d, float e, float f)
: m_values { a, b, c, d, e, f }
{
}
bool is_identity() const;
void map(float unmapped_x, float unmapped_y, float& mapped_x, float& mapped_y) const;
template<typename T>
Point<T> map(const Point<T>&) const;
template<typename T>
Size<T> map(const Size<T>&) const;
template<typename T>
Rect<T> map(const Rect<T>&) const;
float a() const { return m_values[0]; }
float b() const { return m_values[1]; }
float c() const { return m_values[2]; }
float d() const { return m_values[3]; }
float e() const { return m_values[4]; }
float f() const { return m_values[5]; }
float x_scale() const;
float y_scale() const;
AffineTransform& scale(float sx, float sy);
AffineTransform& translate(float tx, float ty);
AffineTransform& rotate_radians(float);
AffineTransform& multiply(const AffineTransform&);
private:
float m_values[6] { 0 };
};
}
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