Package org.jbox2d.collision

Examples of org.jbox2d.collision.AABB

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    }

    m_stepCount = 0;

    float h = worldExtent;
    m_queryAABB = new AABB();
    m_queryAABB.lowerBound.set(-3.0f, -4.0f + h);
    m_queryAABB.upperBound.set(5.0f, 6.0f + h);

    m_rayCastInput = new RayCastInput();
    m_rayCastInput.p1.set(-5.0f, 5.0f + h);
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      Actor actor = m_actors[j];
      if (actor.proxyId == -1) {
        continue;
      }

      AABB aabb0 = new AABB(actor.aabb);
      MoveAABB(actor.aabb);
      Vec2 displacement = actor.aabb.getCenter().sub(aabb0.getCenter());
      m_tree.moveProxy(actor.proxyId, new AABB(actor.aabb), displacement);
      return;
    }
  }
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    for (int i = 0; i < m_proxyCount; ++i) {
      FixtureProxy proxy = m_proxies[i];

      // Compute an AABB that covers the swept shape (may miss some rotation effect).
      final AABB aabb1 = pool1;
      final AABB aab = pool2;
      m_shape.computeAABB(aabb1, transform1, proxy.childIndex);
      m_shape.computeAABB(aab, transform2, proxy.childIndex);

      proxy.aabb.lowerBound.x = aabb1.lowerBound.x < aab.lowerBound.x ? aabb1.lowerBound.x : aab.lowerBound.x;
      proxy.aabb.lowerBound.y = aabb1.lowerBound.y < aab.lowerBound.y ? aabb1.lowerBound.y : aab.lowerBound.y;
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        }

        for (Fixture f = b.getFixtureList(); f != null; f = f.getNext()) {
          for (int i = 0; i < f.m_proxyCount; ++i) {
            FixtureProxy proxy = f.m_proxies[i];
            AABB aabb = m_contactManager.m_broadPhase.getFatAABB(proxy.proxyId);
            if (aabb != null) {
              Vec2[] vs = avs.get(4);
              vs[0].set(aabb.lowerBound.x, aabb.lowerBound.y);
              vs[1].set(aabb.upperBound.x, aabb.lowerBound.y);
              vs[2].set(aabb.upperBound.x, aabb.upperBound.y);
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   */
  @Override
  public boolean testOverlap(int proxyIdA, int proxyIdB) {
    // return AABB.testOverlap(proxyA.aabb, proxyB.aabb);
    //return m_tree.overlap(proxyIdA, proxyIdB);
    final AABB a = m_tree.getFatAABB(proxyIdA);
    final AABB b = m_tree.getFatAABB(proxyIdB);
    if (b.lowerBound.x - a.upperBound.x > 0.0f || b.lowerBound.y - a.upperBound.y > 0.0f) {
      return false;
    }

    if (a.lowerBound.x - b.upperBound.x > 0.0f || a.lowerBound.y - b.upperBound.y > 0.0f) {
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        continue;
      }

      // We have to query the tree with the fat AABB so that
      // we don't fail to create a pair that may touch later.
      final AABB fatAABB = m_tree.getFatAABB(m_queryProxyId);

      // Query tree, create pairs and add them pair buffer.
      // log.debug("quering aabb: "+m_queryProxy.aabb);
      m_tree.query(this, fatAABB);
    }
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  @Override
  public final int createProxy(final AABB aabb, Object userData) {
    final DynamicTreeNode node = allocateNode();
    int proxyId = node.id;
    // Fatten the aabb
    final AABB nodeAABB = node.aabb;
    nodeAABB.lowerBound.x = aabb.lowerBound.x - Settings.aabbExtension;
    nodeAABB.lowerBound.y = aabb.lowerBound.y - Settings.aabbExtension;
    nodeAABB.upperBound.x = aabb.upperBound.x + Settings.aabbExtension;
    nodeAABB.upperBound.y = aabb.upperBound.y + Settings.aabbExtension;
    node.userData = userData;
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  public final boolean moveProxy(int proxyId, final AABB aabb, Vec2 displacement) {
    assert (0 <= proxyId && proxyId < m_nodeCapacity);
    final DynamicTreeNode node = m_nodes[proxyId];
    assert (node.isLeaf());

    final AABB nodeAABB = node.aabb;
    // if (nodeAABB.contains(aabb)) {
    if (nodeAABB.lowerBound.x > aabb.lowerBound.x && nodeAABB.lowerBound.y > aabb.lowerBound.y
        && aabb.upperBound.x > nodeAABB.upperBound.x && aabb.upperBound.y > nodeAABB.upperBound.y) {
      return false;
    }
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    // |dot(v, p1 - c)| > dot(|v|, h)

    float maxFraction = input.maxFraction;

    // Build a bounding box for the segment.
    final AABB segAABB = aabb;
    // Vec2 t = p1 + maxFraction * (p2 - p1);
    // before inline
    // temp.set(p2).subLocal(p1).mulLocal(maxFraction).addLocal(p1);
    // Vec2.minToOut(p1, temp, segAABB.lowerBound);
    // Vec2.maxToOut(p1, temp, segAABB.upperBound);
    tempx = (p2x - p1x) * maxFraction + p1x;
    tempy = (p2y - p1y) * maxFraction + p1y;
    segAABB.lowerBound.x = p1x < tempx ? p1x : tempx;
    segAABB.lowerBound.y = p1y < tempy ? p1y : tempy;
    segAABB.upperBound.x = p1x > tempx ? p1x : tempx;
    segAABB.upperBound.y = p1y > tempy ? p1y : tempy;
    // end inline

    nodeStack.reset();
    nodeStack.push(m_root);
    while (nodeStack.getCount() > 0) {
      final DynamicTreeNode node = nodeStack.pop();
      if (node == null) {
        continue;
      }

      final AABB nodeAABB = node.aabb;
      if (!AABB.testOverlap(nodeAABB, segAABB)) {
        continue;
      }

      // Separating axis for segment (Gino, p80).
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      } else {
        freeNode(node);
      }
    }

    AABB b = new AABB();
    while (count > 1) {
      float minCost = Float.MAX_VALUE;
      int iMin = -1, jMin = -1;
      for (int i = 0; i < count; ++i) {
        AABB aabbi = m_nodes[nodes[i]].aabb;

        for (int j = i + 1; j < count; ++j) {
          AABB aabbj = m_nodes[nodes[j]].aabb;
          b.combine(aabbi, aabbj);
          float cost = b.getPerimeter();
          if (cost < minCost) {
            iMin = i;
            jMin = j;
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Related Classes of org.jbox2d.collision.AABB

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  • advanced.physics.scenes.PhysicsScene
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  • org.jbox2d.collision.broadphase.BroadPhase
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  • org.jbox2d.collision.broadphase.DynamicTree
  • org.jbox2d.collision.broadphase.DynamicTreeFlatNodes
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