#include <qafVector2D.h>
This class overloads several operators to make evaluating formulae easier.
The multiplication operator (*) can be used with a scalar argument (i.e., a float value), or with another vector, in which case it stands for the dot product.
Public Member Functions | |
| Vector2D (float _x, float _y) | |
| Vector2D (int _x, int _y) | |
| Vector2D & | operator= (const Vector2D &v) |
| float | length () const |
| Returns the Euclidian norm of this vector. | |
| float | dist (const Vector2D &that) const |
| Returns the distance between the points denoted by this and that. | |
| Vector2D | unit () const |
| Returns a copy of the vector, with length equal to 1. | |
| void | normalize () |
| Resizes the vector so it will have length equal to 1. | |
| Vector2D | project (const Vector2D &onto) const |
| Returns the projection of this vector onto another. | |
| Vector2D | reflect (const Vector2D &around) const |
Returns the reflection of this vector relative to around. | |
| Vector2D | rotate (float radians) const |
| Returns a rotated copy of this vector. | |
| float | angle (const Vector2D &v) const |
Returns the angle between this vector and v. | |
| Vector2D & | operator+= (const Vector2D &v) |
| Vector2D & | operator-= (const Vector2D &v) |
| Vector2D | operator+ (const Vector2D &v) const |
| Vector2D | operator- (const Vector2D &v) const |
| Vector2D | operator- () const |
| Vector2D & | operator *= (float s) |
| Vector2D | operator * (float s) const |
| Vector2D & | operator/= (float s) |
| Vector2D | operator/ (float s) const |
| float | operator * (const Vector2D &v) const |
Returns the dot product of this vector and v. | |
Public Attributes | |
| float | x |
| float | y |
| float qaf::Vector2D::length | ( | ) | const [inline] |
Returns the Euclidian norm of this vector.
| float qaf::Vector2D::dist | ( | const Vector2D & | that | ) | const [inline] |
Returns the distance between the points denoted by this and that.
| Vector2D qaf::Vector2D::unit | ( | ) | const [inline] |
Returns a copy of the vector, with length equal to 1.
| void qaf::Vector2D::normalize | ( | ) | [inline] |
Resizes the vector so it will have length equal to 1.
Returns the projection of this vector onto another.
Returns the reflection of this vector relative to around.
| Vector2D qaf::Vector2D::rotate | ( | float | radians | ) | const [inline] |
Returns a rotated copy of this vector.
| float qaf::Vector2D::angle | ( | const Vector2D & | v | ) | const [inline] |
Returns the angle between this vector and v.
| float qaf::Vector2D::operator * | ( | const Vector2D & | v | ) | const [inline] |
Returns the dot product of this vector and v.
1.5.1-p1