A 2D column vector. More...

#include <b2_math.h>

Public Member Functions
	b2Vec2 ()=default
	Default constructor does nothing (for performance).

	b2Vec2 (float xIn, float yIn)
	Construct using coordinates.

void	SetZero ()
	Set this vector to all zeros.

void	Set (float x_, float y_)
	Set this vector to some specified coordinates.

b2Vec2	operator- () const
	Negate this vector.

float	operator() (int32 i) const
	Read from and indexed element.

float &	operator() (int32 i)
	Write to an indexed element.

void	operator+= (const b2Vec2 &v)
	Add a vector to this vector.

void	operator-= (const b2Vec2 &v)
	Subtract a vector from this vector.

void	*operator=** (float a)
	Multiply this vector by a scalar.

float	Length () const
	Get the length of this vector (the norm).

float	LengthSquared () const

float	Normalize ()
	Convert this vector into a unit vector. Returns the length.

bool	IsValid () const
	Does this vector contain finite coordinates?

b2Vec2	Skew () const
	Get the skew vector such that dot(skew_vec, other) == cross(vec, other)

Detailed Description

A 2D column vector.

Member Function Documentation

float b2Vec2::LengthSquared ( ) const

inline

Get the length squared. For performance, use this instead of b2Vec2::Length (if possible).

The documentation for this struct was generated from the following file: