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https://github.com/RGBCube/serenity
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81 lines
2.6 KiB
C++
81 lines
2.6 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/Forward.h>
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#include <AK/LogStream.h>
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#include <LibGfx/Forward.h>
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namespace Gfx {
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class AffineTransform {
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public:
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AffineTransform()
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: m_values { 1, 0, 0, 1, 0, 0 }
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{
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}
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AffineTransform(float a, float b, float c, float d, float e, float f)
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: m_values { a, b, c, d, e, f }
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{
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}
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bool is_identity() const;
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void map(float unmapped_x, float unmapped_y, float& mapped_x, float& mapped_y) const;
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template<typename T>
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Point<T> map(const Point<T>&) const;
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template<typename T>
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Size<T> map(const Size<T>&) const;
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template<typename T>
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Rect<T> map(const Rect<T>&) const;
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float a() const { return m_values[0]; }
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float b() const { return m_values[1]; }
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float c() const { return m_values[2]; }
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float d() const { return m_values[3]; }
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float e() const { return m_values[4]; }
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float f() const { return m_values[5]; }
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float x_scale() const;
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float y_scale() const;
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AffineTransform& scale(float sx, float sy);
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AffineTransform& translate(float tx, float ty);
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AffineTransform& rotate_radians(float);
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AffineTransform& multiply(const AffineTransform&);
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private:
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float m_values[6] { 0 };
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};
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const LogStream& operator<<(const LogStream&, const AffineTransform&);
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}
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