60 lines
1.3 KiB
C++
60 lines
1.3 KiB
C++
#ifndef POINT2_H
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#define POINT2_H
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#include <cmath>
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/**
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* 2D Point
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*/
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struct Point2 {
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float x;
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float y;
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/** ctor */
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Point2() : x(0), y(0) {;}
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/** ctor */
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Point2(const float x, const float y) : x(x), y(y) {;}
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Point2 operator + (const Point2& o) const {return Point2(x+o.x, y+o.y);}
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Point2 operator - (const Point2& o) const {return Point2(x-o.x, y-o.y);}
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Point2 operator * (const float v) const {return Point2(v*x, v*y);}
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Point2 operator / (const float v) const {return Point2(x/v, y/v);}
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Point2& operator *= (const float v) {x*=v; y*=v; return *this;}
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Point2& operator /= (const float v) {x/=v; y/=v; return *this;}
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Point2& operator += (const Point2& o) {x+=o.x; y+=o.y; return *this;}
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Point2& operator -= (const Point2& o) {x-=o.x; y-=o.y; return *this;}
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bool operator == (const Point2& o) const {return x==o.x && y==o.y;}
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bool operator != (const Point2& o) const {return x!=o.x || y!=o.y;}
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Point2 perpendicular() const {return Point2(-y, x);}
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float length() const {return std::sqrt(x*x + y*y);}
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Point2 normalized() const {return (*this) / length();}
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/** get the distance between this point and the other one */
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float getDistance(const Point2& o) const {
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const float dx = x - o.x;
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const float dy = y - o.y;
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return std::sqrt(dx*dx + dy*dy);
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}
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};
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#endif // POINT2_H
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