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Box2D
2.3.0
A 2D Physics Engine for Games
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A 2D column vector. More...
#include <b2Math.h>
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. | |
| float32 | operator() (int32 i) const |
| Read from and indexed element. | |
| float32 & | 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*= (float32 a) |
| Multiply this vector by a scalar. | |
| float32 | Length () const |
| Get the length of this vector (the norm). | |
| float32 | LengthSquared () const |
| float32 | 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) | |
Public Attributes | |
| float32 | x |
| float32 | y |
A 2D column vector.
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inline |
Get the length squared. For performance, use this instead of b2Vec2::Length (if possible).
1.8.14