# b2WorldManifold Struct Reference

This is used to compute the current state of a contact manifold. More...

`#include <b2Collision.h>`

List of all members.

## Public Member Functions
void | Initialize (const b2Manifold *manifold, const b2Transform &xfA, float32 radiusA, const b2Transform &xfB, float32 radiusB)
## Public Attributes
b2Vec2 | normal
| world vector pointing from A to B
b2Vec2 | points [b2_maxManifoldPoints]
| world contact point (point of intersection)

## Detailed Description

This is used to compute the current state of a contact manifold.

## Member Function Documentation

void b2WorldManifold::Initialize | ( | const b2Manifold * | manifold,
|  | const b2Transform & | xfA,
|  | float32 | radiusA,
|  | const b2Transform & | xfB,
|  | float32 | radiusB |
| ) |  |  |

Evaluate the manifold with supplied transforms. This assumes modest motion from the original state. This does not change the point count, impulses, etc. The radii must come from the shapes that generated the manifold.

## Member Data Documentation

b2Vec2 b2WorldManifold::normal

world vector pointing from A to B

b2Vec2 b2WorldManifold::points[b2_maxManifoldPoints]

world contact point (point of intersection)

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

- Box2D/Box2D/Collision/b2Collision.h
- Box2D/Box2D/Collision/b2Collision.cpp