90 lines
2.5 KiB
C++
90 lines
2.5 KiB
C++
// Copyright (c) 2016-2018 Easy2D - Nomango
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#pragma once
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#include "../math/vector.hpp"
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#include <d2d1.h>
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namespace easy2d
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{
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// 坐标
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//
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// Usage:
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// 表示一个二维空间的坐标: Point origin(0, 0);
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// 计算两点间距离: float distance = p1.Distance(p2);
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// 坐标可以相加减: Point p = Point(10, 10) + Point(20, 20); // p 的坐标是 (30, 30)
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//
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class Point
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: public math::Vector2
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{
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public:
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Point() {}
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Point(float x, float y) : math::Vector2(x, y) {}
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Point(Point const& other) : math::Vector2(other.x, other.y) {}
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inline float Distance(Point const& v)
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{
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return Point(x - v.x, y - v.y).Length();
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}
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inline const Point operator + (const Point & other) const
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{
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return Point(x + other.x, y + other.y);
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}
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inline const Point operator - (const Point & other) const
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{
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return Point(x - other.x, y - other.y);
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}
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inline const Point operator * (float val) const
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{
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return Point(x * val, y * val);
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}
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inline const Point operator / (float val) const
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{
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return Point(x / val, y / val);
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}
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inline const Point operator - () const
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{
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return Point(-x, -y);
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}
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inline bool operator == (const Point& 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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inline operator D2D1_POINT_2F const& () const
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{
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return reinterpret_cast<D2D1_POINT_2F const&>(*this);
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}
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inline operator D2D1_POINT_2F& ()
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{
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return reinterpret_cast<D2D1_POINT_2F&>(*this);
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}
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};
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}
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