b2Vec2 Struct Reference
A 2D column vector. More...
Public Member Functions | |
| b2Vec2 () | |
| Default constructor does nothing (for performance). | |
| b2Vec2 (float32 x, float32 y) | |
| Construct using coordinates. | |
| void | SetZero () |
| Set this vector to all zeros. | |
| void | Set (float32 x_, float32 y_) |
| Set this vector to some specified coordinates. | |
| b2Vec2 | operator- () const |
| Negate this vector. | |
| void | operator+= (const b2Vec2 &v) |
| Add a vector to this vector. | |
| void | operator-= (const b2Vec2 &v) |
| Subtract a vector from this vector. | |
| void | operator *= (float32 a) |
| Multiply this vector by a scalar. | |
| float32 | Length () const |
| Get the length of this vector (the norm). | |
| float32 | LengthSquared () const |
| Get the length squared. | |
| float32 | Normalize () |
| Convert this vector into a unit vector. Returns the length. | |
| bool | IsValid () const |
| Does this vector contain finite coordinates? | |
Detailed Description
A 2D column vector.Member Function Documentation
| float32 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:
- b2Math.h
Generated on Sun Apr 13 15:21:27 2008 for Box2D by
1.5.4