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#pragma once
#include "Size.h"
#include "Angle.h"
namespace storm {
namespace geometry {
STORM_PKG(core.geometry);
/**
* A point in 2D-space.
* Screen-space is assumed, where 0,0 is positioned in the upper left corner of the screen.
*/
class Point {
STORM_VALUE;
public:
// Zero.
STORM_CTOR Point();
// Initialize.
STORM_CTOR Point(Float x, Float y);
// Convert.
STORM_CAST_CTOR Point(Size s);
// Coordinates.
Float x;
Float y;
// Tangent. Always 90 deg clockwise from the vector in screen-space.
Point STORM_FN tangent() const;
// Compute the length squared of the point. Cheaper than the length.
Float STORM_FN lengthSq() const;
// Compute the lenght of the point.
Float STORM_FN length() const;
// Return a normalized point (i.e. length 1). If the point has length zero, then the
// original point is returned.
Point STORM_FN normalized() const;
// Compute the taxicab/manhattan length (i.e. x + y).
Float STORM_FN taxiLength() const;
// Output.
void STORM_FN toS(StrBuf *to) const;
};
wostream &operator <<(wostream &to, const Point &s);
// Operations.
Point STORM_FN operator +(Point a, Size b);
Point STORM_FN operator +(Point a, Point b);
Point STORM_FN operator -(Point a, Point b);
Point STORM_FN operator -(Point a, Size b);
Point STORM_FN operator -(Point a);
Point &STORM_FN operator +=(Point &a, Point b);
Point &STORM_FN operator -=(Point &a, Point b);
Point STORM_FN operator *(Point a, Float b);
Point STORM_FN operator *(Float a, Point b);
Point STORM_FN operator /(Point a, Float b);
Point &STORM_FN operator *=(Point &a, Float b);
Point &STORM_FN operator /=(Point &a, Float b);
// Dot product.
Float STORM_FN operator *(Point a, Point b);
inline Bool STORM_FN operator ==(Point a, Point b) { return a.x == b.x && a.y == b.y; }
inline Bool STORM_FN operator !=(Point a, Point b) { return !(a == b); }
// Create an angle based on the point. 0 deg is (0, -1)
Point STORM_FN angle(Angle angle);
// Project the point `pt` onto a line that starts in `origin` and expands in the direction
// of `dir`. `dir` does not have to be normalized.
Point STORM_FN project(Point pt, Point origin, Point dir);
// Center point of a size.
Point STORM_FN center(Size s);
// Compute the absolute value of both compontents in the point.
Point STORM_FN abs(Point a);
}
}
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