public Object pairAdded(final Object proxyUserData1, final Object proxyUserData2) {
Shape shape1 = (Shape) proxyUserData1;
Shape shape2 = (Shape) proxyUserData2;
Body body1 = shape1.getBody();
Body body2 = shape2.getBody();
if (body1.isStatic() && body2.isStatic()) {
return m_nullContact;
}
if (shape1.getBody() == shape2.getBody()) {
return m_nullContact;
}
if (body2.isConnected(body1)) {
return m_nullContact;
}
if (m_world.m_contactFilter != null
&& m_world.m_contactFilter.shouldCollide(shape1, shape2) == false) {
return m_nullContact;
}
// Call the factory.
final Contact c = Contact.createContact(shape1, shape2);
if (c == null) {
return m_nullContact;
}
// Contact creation may swap shapes.
shape1 = c.getShape1();
shape2 = c.getShape2();
body1 = shape1.getBody();
body2 = shape2.getBody();
// Insert into the world.
c.m_prev = null;
c.m_next = m_world.m_contactList;
if (m_world.m_contactList != null) {
m_world.m_contactList.m_prev = c;
}
m_world.m_contactList = c;
// Connect to island graph.
// Connect to body 1
c.m_node1.contact = c;
c.m_node1.other = body2;
c.m_node1.prev = null;
c.m_node1.next = body1.m_contactList;
if (body1.m_contactList != null) {
body1.m_contactList.prev = c.m_node1;
}
body1.m_contactList = c.m_node1;
// Connect to body 2
c.m_node2.contact = c;
c.m_node2.other = body1;
c.m_node2.prev = null;
c.m_node2.next = body2.m_contactList;
if (body2.m_contactList != null) {
body2.m_contactList.prev = c.m_node2;
}
body2.m_contactList = c.m_node2;
++m_world.m_contactCount;
return c;
}
