Java Code Examples for org.jbox2d.dynamics.contacts.Contact#getManifold()

The following examples show how to use org.jbox2d.dynamics.contacts.Contact#getManifold() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: Breakable.java    From jbox2d with BSD 2-Clause "Simplified" License 6 votes vote down vote up 
@Override
public void postSolve(Contact contact, ContactImpulse impulse) {
  if (m_broke) {
    // The body already broke.
    return;
  }

  // Should the body break?
  int count = contact.getManifold().pointCount;

  float maxImpulse = 0.0f;
  for (int i = 0; i < count; ++i) {
    maxImpulse = MathUtils.max(maxImpulse, impulse.normalImpulses[i]);
  }

  if (maxImpulse > 40.0f) {
    // Flag the body for breaking.
    m_break = true;
  }
}
Example 2
Source File: TestbedTest.java    From jbox2d with BSD 2-Clause "Simplified" License 5 votes vote down vote up 
public void preSolve(Contact contact, Manifold oldManifold) {
  Manifold manifold = contact.getManifold();

  if (manifold.pointCount == 0) {
    return;
  }

  Fixture fixtureA = contact.getFixtureA();
  Fixture fixtureB = contact.getFixtureB();

  Collision.getPointStates(state1, state2, oldManifold, manifold);

  contact.getWorldManifold(worldManifold);

  for (int i = 0; i < manifold.pointCount && pointCount < MAX_CONTACT_POINTS; i++) {
    ContactPoint cp = points[pointCount];
    cp.fixtureA = fixtureA;
    cp.fixtureB = fixtureB;
    cp.position.set(worldManifold.points[i]);
    cp.normal.set(worldManifold.normal);
    cp.state = state2[i];
    cp.normalImpulse = manifold.points[i].normalImpulse;
    cp.tangentImpulse = manifold.points[i].tangentImpulse;
    cp.separation = worldManifold.separations[i];
    ++pointCount;
  }
}