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Box2D
2.4.1
A 2D physics engine for games
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Box2D
2.4.1
A 2D physics engine for games
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#include <b2_collision.h>
Public Attributes | |
| b2Vec2 | localPoint |
| usage depends on manifold type | |
| float | normalImpulse |
| the non-penetration impulse | |
| float | tangentImpulse |
| the friction impulse | |
| b2ContactID | id |
| uniquely identifies a contact point between two shapes | |
A manifold point is a contact point belonging to a contact manifold. It holds details related to the geometry and dynamics of the contact points. The local point usage depends on the manifold type: -e_circles: the local center of circleB -e_faceA: the local center of cirlceB or the clip point of polygonB -e_faceB: the clip point of polygonA This structure is stored across time steps, so we keep it small. Note: the impulses are used for internal caching and may not provide reliable contact forces, especially for high speed collisions.
1.8.17