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83 lines
3.3 KiB
C++
83 lines
3.3 KiB
C++
#pragma once
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class Point
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{
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public:
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Point() = default;
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Point(double x, double y) : x(x), y(y) { }
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double x = 0;
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double y = 0;
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Point& operator+=(const Point& p) { x += p.x; y += p.y; return *this; }
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Point& operator-=(const Point& p) { x -= p.x; y -= p.y; return *this; }
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};
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class Size
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{
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public:
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Size() = default;
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Size(double width, double height) : width(width), height(height) { }
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double width = 0;
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double height = 0;
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};
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class Rect
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{
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public:
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Rect() = default;
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Rect(const Point& p, const Size& s) : x(p.x), y(p.y), width(s.width), height(s.height) { }
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Rect(double x, double y, double width, double height) : x(x), y(y), width(width), height(height) { }
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Point pos() const { return { x, y }; }
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Size size() const { return { width, height }; }
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Point topLeft() const { return { x, y }; }
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Point topRight() const { return { x + width, y }; }
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Point bottomLeft() const { return { x, y + height }; }
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Point bottomRight() const { return { x + width, y + height }; }
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double left() const { return x; }
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double top() const { return y; }
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double right() const { return x + width; }
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double bottom() const { return y + height; }
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static Rect xywh(double x, double y, double width, double height) { return Rect(x, y, width, height); }
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static Rect ltrb(double left, double top, double right, double bottom) { return Rect(left, top, right - left, bottom - top); }
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static Rect shrink(Rect box, double left, double top, double right, double bottom)
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{
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box.x += left;
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box.y += top;
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box.width = std::max(box.width - left - right, 0.0);
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box.height = std::max(box.height - bottom - top, 0.0);
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return box;
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}
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bool contains(const Point& p) const { return (p.x >= x && p.x < x + width) && (p.y >= y && p.y < y + height); }
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double x = 0;
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double y = 0;
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double width = 0;
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double height = 0;
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};
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inline Point operator+(const Point& a, const Point& b) { return Point(a.x + b.x, a.y + b.y); }
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inline Point operator-(const Point& a, const Point& b) { return Point(a.x - b.x, a.y - b.y); }
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inline bool operator==(const Point& a, const Point& b) { return a.x == b.x && a.y == b.y; }
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inline bool operator!=(const Point& a, const Point& b) { return a.x != b.x || a.y != b.y; }
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inline bool operator==(const Size& a, const Size& b) { return a.width == b.width && a.height == b.height; }
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inline bool operator!=(const Size& a, const Size& b) { return a.width != b.width || a.height != b.height; }
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inline bool operator==(const Rect& a, const Rect& b) { return a.x == b.x && a.y == b.y && a.width == b.width && a.height == b.height; }
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inline bool operator!=(const Rect& a, const Rect& b) { return a.x != b.x || a.y != b.y || a.width != b.width || a.height != b.height; }
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inline Point operator+(const Point& a, double b) { return Point(a.x + b, a.y + b); }
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inline Point operator-(const Point& a, double b) { return Point(a.x - b, a.y - b); }
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inline Point operator*(const Point& a, double b) { return Point(a.x * b, a.y * b); }
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inline Point operator/(const Point& a, double b) { return Point(a.x / b, a.y / b); }
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inline Size operator+(const Size& a, double b) { return Size(a.width + b, a.height + b); }
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inline Size operator-(const Size& a, double b) { return Size(a.width - b, a.height - b); }
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inline Size operator*(const Size& a, double b) { return Size(a.width * b, a.height * b); }
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inline Size operator/(const Size& a, double b) { return Size(a.width / b, a.height / b); }
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