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/*
* Copyright (c) 2020-2022, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Concepts.h>
#include <AK/Format.h>
#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;
bool is_identity_or_translation() const;
void map(float unmapped_x, float unmapped_y, float& mapped_x, float& mapped_y) const;
template<Arithmetic T>
Point<T> map(Point<T>) const;
template<Arithmetic T>
Size<T> map(Size<T>) const;
template<Arithmetic T>
Rect<T> map(Rect<T> const&) const;
Quad<float> map_to_quad(Rect<float> const&) const;
[[nodiscard]] ALWAYS_INLINE float a() const { return m_values[0]; }
[[nodiscard]] ALWAYS_INLINE float b() const { return m_values[1]; }
[[nodiscard]] ALWAYS_INLINE float c() const { return m_values[2]; }
[[nodiscard]] ALWAYS_INLINE float d() const { return m_values[3]; }
[[nodiscard]] ALWAYS_INLINE float e() const { return m_values[4]; }
[[nodiscard]] ALWAYS_INLINE float f() const { return m_values[5]; }
[[nodiscard]] float x_scale() const;
[[nodiscard]] float y_scale() const;
[[nodiscard]] FloatPoint scale() const;
[[nodiscard]] float x_translation() const;
[[nodiscard]] float y_translation() const;
[[nodiscard]] FloatPoint translation() const;
AffineTransform& scale(float sx, float sy);
AffineTransform& scale(FloatPoint s);
AffineTransform& set_scale(float sx, float sy);
AffineTransform& set_scale(FloatPoint s);
AffineTransform& translate(float tx, float ty);
AffineTransform& translate(FloatPoint t);
AffineTransform& set_translation(float tx, float ty);
AffineTransform& set_translation(FloatPoint t);
AffineTransform& rotate_radians(float);
AffineTransform& multiply(AffineTransform const&);
Optional<AffineTransform> inverse() const;
private:
float m_values[6] { 0 };
};
}
template<>
struct AK::Formatter<Gfx::AffineTransform> : Formatter<FormatString> {
ErrorOr<void> format(FormatBuilder& builder, Gfx::AffineTransform const& value)
{
return Formatter<FormatString>::format(builder, "[{} {} {} {} {} {}]"sv, value.a(), value.b(), value.c(), value.d(), value.e(), value.f());
}
};
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