Vec2_< T > Class Template Reference

Detailed Description

template<class T>
class asl::Vec2_< T >

A Vec2 represents a vector in 2D space.

This class allows operating with vectors as with primitive types via operators.

Vec2 a (10, 10);
Vec2 b (-5, 1.5);
Vec2 c = -a.rotate(PI/4) + 2.0f * (b - a).normalized();

The angle between two vectors can be computed with:

T angle = acos(a.normalized() * b.normalized());

#include <Vec2.h>

Public Member Functions
	Vec2_ (T x, T y)
	Constructs a vector with the given (x, y) coordinates.
Vec2_	perpend () const
	Returns this vector rotated 90 degrees counterclockwise.
Vec2_	rotate (T a) const
	Returns this vector rotated an angle a.
Vec2_	normalized () const
	Returns this vector normalized.
T	angle () const
	Returns the angle between this vector and the +X axis in the [-PI, PI] range.
T	angle (const Vec2_ &b) const
	Returns the angle between this vector and b
T	operator! () const
	Returns the length of this vector.
T	length () const
	Returns the length of this vector.
T	length2 () const
	Returns the length of this vector squared.
Vec2_	operator+ (const Vec2_ &b) const
	Returns this vector plus b
Vec2_	operator- (const Vec2_ &b) const
	Returns this vector minus b
T	operator* (const Vec2_ &b) const
	Returns the dot product of this vector and b
Vec2_	operator* (T r) const
	Returns this vector multiplied by scalar r
T	operator^ (const Vec2_ &b) const
	Returns the z-component of the cross product of this vector and b
Vec2_	operator/ (T r) const
	Returns this vector divided by scalar r
Vec2_	operator% (const Vec2_ &b) const
	Returns a vector that is a component-wise product of this vector and b
bool	operator== (const Vec2_ &b) const
	Compares this vector and b (warning: test equality of floats with care)
bool	operator!= (const Vec2_ &b) const
	Compares this vector and b (warning: test equality of floats with care)
void	operator+= (const Vec2_ &b)
	Adds b to this vector.
void	operator-= (const Vec2_ &b)
	Subtracts b from this vector.
void	operator*= (T r)
	Multiplies this vector by scalar r
void	operator/= (T r)
	Divides this vector by scalar r
void	operator%= (const Vec2_ &b)
	Multiplies this vector by another, component-wise.
Vec2_	operator- () const
	Returns this vector negated.

Static Public Member Functions
static Vec2_	polar (T r, T a)
	Returns a vector constructed from polar coordinates.

Friends
Vec2_	operator* (T r, const Vec2_ &b)
	Returns vector b multiplied by scalar r

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

• Vec2.h