point2.h File Reference

#include "maxheap.h"
#include "GeomExport.h"
#include "strbasic.h"
#include "ipoint2.h"
#include "assert1.h"
#include <iosfwd>
#include <math.h>

Classes
class	Point2

Functions
Point2	operator+ (const Point2 &a, float f)
float	Length (const Point2 &)
int	MaxComponent (const Point2 &)
int	MinComponent (const Point2 &)
Point2	Normalize (const Point2 &)
Point2	operator* (float, const Point2 &)
Point2	operator* (const Point2 &, float)
Point2	operator/ (const Point2 &, float)
M_STD_OSTREAM &	operator<< (M_STD_OSTREAM &, const Point2 &)
float	LengthSquared (const Point2 &v)

Function Documentation

operator+()

Point2 operator+ ( const Point2 &  a, float  f  )

inline

Remarks

Returns a copy of the Point2 argument offset by (f, f).

{
    return (Point2(a.x + f, a.y + f));
}

Length()

float Length ( const Point2 &  v )

inline

Remarks

Returns the length of the Point2, ie:

sqrt(v.x*v.x+v.y*v.y);

{
    return (float)sqrt(v.x * v.x + v.y * v.y);
}

MaxComponent()

int MaxComponent

(

const Point2 &

)

Remarks

Returns the component with the maximum absolute value. 0=x, 1=y.

MinComponent()

int MinComponent

(

const Point2 &

)

Remarks

Returns the component with the minimum absolute value. 0=x, 1=y.

Normalize()

Point2 Normalize

(

const Point2 &

)

Remarks

Returns a unit vector. This is a Point2 with each component divided by the point Length().

operator*() [1/2]

Point2 operator* ( float  f, const Point2 &  a  )

inline

Remarks

Returns a Point2 multiplied by a scalar.

{
    return (Point2(a.x * f, a.y * f));
}

operator*() [2/2]

Point2 operator* ( const Point2 &  a, float  f  )

inline

Remarks

Returns a Point2 multiplied by a scalar.

{
    return (Point2(a.x * f, a.y * f));
}

operator/()

Point2 operator/ ( const Point2 &  a, float  f  )

inline

Remarks

Returns a Point2 whose x and y members are divided by a scalar.

{
    DbgAssert(f != 0.0f);
    float invF = 1.0f / f; // Mimic 2019 behavior
    return (Point2(a.x * invF, a.y * invF));
}

operator<<()

M_STD_OSTREAM& operator<<	(	M_STD_OSTREAM &	,
		const Point2 &
	)

LengthSquared()

float LengthSquared ( const Point2 &  v )

inline

Remarks

The 'Length' squared of the point. This is v.x*v.x+v.y*v.y.

{
    return (float)(v.x * v.x + v.y * v.y);
}