mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 17:12:43 +00:00
326 lines
8.3 KiB
C++
326 lines
8.3 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Format.h>
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#include <AK/Math.h>
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#include <AK/StdLibExtras.h>
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#include <LibGfx/AffineTransform.h>
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#include <LibGfx/Forward.h>
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#include <LibGfx/Orientation.h>
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#include <LibIPC/Forward.h>
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#include <math.h>
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namespace Gfx {
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template<typename T>
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class Point {
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public:
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Point() = default;
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constexpr Point(T x, T y)
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: m_x(x)
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, m_y(y)
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{
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}
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template<typename U>
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constexpr Point(U x, U y)
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: m_x(x)
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, m_y(y)
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{
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}
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template<typename U>
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explicit Point(Point<U> const& other)
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: m_x(other.x())
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, m_y(other.y())
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{
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}
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[[nodiscard]] constexpr ALWAYS_INLINE T x() const { return m_x; }
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[[nodiscard]] constexpr ALWAYS_INLINE T y() const { return m_y; }
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ALWAYS_INLINE void set_x(T x) { m_x = x; }
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ALWAYS_INLINE void set_y(T y) { m_y = y; }
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[[nodiscard]] ALWAYS_INLINE bool is_zero() const { return m_x == 0 && m_y == 0; }
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void translate_by(T dx, T dy)
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{
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m_x += dx;
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m_y += dy;
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}
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ALWAYS_INLINE void translate_by(T dboth) { translate_by(dboth, dboth); }
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ALWAYS_INLINE void translate_by(Point<T> const& delta) { translate_by(delta.x(), delta.y()); }
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void scale_by(T dx, T dy)
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{
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m_x *= dx;
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m_y *= dy;
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}
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ALWAYS_INLINE void scale_by(T dboth) { scale_by(dboth, dboth); }
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ALWAYS_INLINE void scale_by(Point<T> const& delta) { scale_by(delta.x(), delta.y()); }
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void transform_by(AffineTransform const& transform) { *this = transform.map(*this); }
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[[nodiscard]] Point<T> translated(Point<T> const& delta) const
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{
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Point<T> point = *this;
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point.translate_by(delta);
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return point;
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}
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[[nodiscard]] Point<T> translated(T dx, T dy) const
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{
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Point<T> point = *this;
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point.translate_by(dx, dy);
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return point;
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}
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[[nodiscard]] Point<T> translated(T dboth) const
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{
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Point<T> point = *this;
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point.translate_by(dboth, dboth);
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return point;
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}
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[[nodiscard]] Point<T> scaled(T dboth) const
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{
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Point<T> point = *this;
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point.scale_by(dboth);
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return point;
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}
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[[nodiscard]] Point<T> scaled(Point<T> const& delta) const
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{
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Point<T> point = *this;
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point.scale_by(delta);
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return point;
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}
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[[nodiscard]] Point<T> scaled(T sx, T sy) const
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{
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Point<T> point = *this;
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point.scale_by(sx, sy);
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return point;
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}
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[[nodiscard]] Point<T> transformed(AffineTransform const& transform) const
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{
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Point<T> point = *this;
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point.transform_by(transform);
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return point;
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}
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void constrain(Rect<T> const&);
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[[nodiscard]] Point<T> constrained(Rect<T> const& rect) const
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{
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Point<T> point = *this;
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point.constrain(rect);
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return point;
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}
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[[nodiscard]] Point<T> moved_left(T amount) const { return { x() - amount, y() }; }
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[[nodiscard]] Point<T> moved_right(T amount) const { return { x() + amount, y() }; }
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[[nodiscard]] Point<T> moved_up(T amount) const { return { x(), y() - amount }; }
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[[nodiscard]] Point<T> moved_down(T amount) const { return { x(), y() + amount }; }
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template<class U>
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[[nodiscard]] bool operator==(Point<U> const& other) const
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{
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return x() == other.x() && y() == other.y();
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}
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[[nodiscard]] Point<T> operator+(Point<T> const& other) const { return { m_x + other.m_x, m_y + other.m_y }; }
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Point<T>& operator+=(Point<T> const& other)
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{
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m_x += other.m_x;
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m_y += other.m_y;
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return *this;
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}
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[[nodiscard]] Point<T> operator-() const { return { -m_x, -m_y }; }
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[[nodiscard]] Point<T> operator-(Point<T> const& other) const { return { m_x - other.m_x, m_y - other.m_y }; }
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Point<T>& operator-=(Point<T> const& other)
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{
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m_x -= other.m_x;
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m_y -= other.m_y;
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return *this;
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}
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[[nodiscard]] Point<T> operator*(T factor) const { return { m_x * factor, m_y * factor }; }
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Point<T>& operator*=(T factor)
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{
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m_x *= factor;
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m_y *= factor;
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return *this;
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}
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[[nodiscard]] Point<T> operator/(T factor) const { return { m_x / factor, m_y / factor }; }
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Point<T>& operator/=(T factor)
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{
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m_x /= factor;
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m_y /= factor;
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return *this;
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}
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[[nodiscard]] T primary_offset_for_orientation(Orientation orientation) const
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{
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return orientation == Orientation::Vertical ? y() : x();
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}
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void set_primary_offset_for_orientation(Orientation orientation, T value)
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{
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if (orientation == Orientation::Vertical) {
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set_y(value);
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} else {
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set_x(value);
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}
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}
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[[nodiscard]] T secondary_offset_for_orientation(Orientation orientation) const
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{
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return orientation == Orientation::Vertical ? x() : y();
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}
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void set_secondary_offset_for_orientation(Orientation orientation, T value)
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{
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if (orientation == Orientation::Vertical) {
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set_x(value);
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} else {
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set_y(value);
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}
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}
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[[nodiscard]] T dx_relative_to(Point<T> const& other) const
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{
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return x() - other.x();
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}
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[[nodiscard]] T dy_relative_to(Point<T> const& other) const
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{
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return y() - other.y();
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}
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// Returns pixels moved from other in either direction
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[[nodiscard]] T pixels_moved(Point<T> const& other) const
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{
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return max(AK::abs(dx_relative_to(other)), AK::abs(dy_relative_to(other)));
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}
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[[nodiscard]] float distance_from(Point<T> const& other) const
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{
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if (*this == other)
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return 0;
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return AK::hypot<float>(m_x - other.m_x, m_y - other.m_y);
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}
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[[nodiscard]] Point absolute_relative_distance_to(Point const& other) const
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{
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return { AK::abs(dx_relative_to(other)), AK::abs(dy_relative_to(other)) };
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}
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[[nodiscard]] Point end_point_for_aspect_ratio(Point const& previous_end_point, float aspect_ratio) const;
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template<typename U>
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requires(!IsSame<T, U>)
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[[nodiscard]] Point<U> to_type() const
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{
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return Point<U>(*this);
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}
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template<typename U>
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[[nodiscard]] Point<U> to_rounded() const
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{
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return Point<U>(roundf(x()), roundf(y()));
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}
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template<typename U>
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requires FloatingPoint<T>
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[[nodiscard]] Point<U> to_ceiled() const
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{
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return Point<U>(ceil(x()), ceil(y()));
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}
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template<typename U>
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requires FloatingPoint<T>
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[[nodiscard]] Point<U> to_floored() const
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{
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return Point<U>(AK::floor(x()), AK::floor(y()));
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}
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[[nodiscard]] ByteString to_byte_string() const;
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private:
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T m_x { 0 };
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T m_y { 0 };
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};
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using IntPoint = Point<int>;
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using FloatPoint = Point<float>;
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template<typename T>
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inline Point<T> linear_interpolate(Point<T> const& p1, Point<T> const& p2, float t)
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{
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return Point<T> { p1.x() + t * (p2.x() - p1.x()), p1.y() + t * (p2.y() - p1.y()) };
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}
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template<typename T>
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inline Point<T> quadratic_interpolate(Point<T> const& p1, Point<T> const& p2, Point<T> const& c1, float t)
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{
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return linear_interpolate(linear_interpolate(p1, c1, t), linear_interpolate(c1, p2, t), t);
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}
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template<typename T>
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inline Point<T> cubic_interpolate(Point<T> const& p1, Point<T> const& p2, Point<T> const& c1, Point<T> const& c2, float t)
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{
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return linear_interpolate(quadratic_interpolate(p1, c1, c2, t), quadratic_interpolate(c1, c2, p2, t), t);
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}
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}
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namespace AK {
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template<typename T>
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struct Formatter<Gfx::Point<T>> : Formatter<FormatString> {
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ErrorOr<void> format(FormatBuilder& builder, Gfx::Point<T> const& value)
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{
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return Formatter<FormatString>::format(builder, "[{},{}]"sv, value.x(), value.y());
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}
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};
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}
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namespace IPC {
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template<>
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ErrorOr<void> encode(Encoder&, Gfx::IntPoint const&);
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template<>
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ErrorOr<void> encode(Encoder&, Gfx::FloatPoint const&);
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template<>
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ErrorOr<Gfx::IntPoint> decode(Decoder&);
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template<>
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ErrorOr<Gfx::FloatPoint> decode(Decoder&);
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}
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template<typename T>
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struct AK::Traits<Gfx::Point<T>> : public AK::DefaultTraits<Gfx::Point<T>> {
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static constexpr bool is_trivial() { return false; }
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static unsigned hash(Gfx::Point<T> const& point)
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{
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return pair_int_hash(AK::Traits<T>::hash(point.x()), AK::Traits<T>::hash(point.y()));
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}
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};
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