Ejemplo n.º 1
0
  public static void findCollisions(
      final Spatial spatial, final Spatial scene, final CollisionResults results) {
    if (spatial == scene
        || spatial.getWorldBound() == null
        || !spatial.getSceneHints().isPickingHintEnabled(PickingHint.Collidable)
        || !scene.getSceneHints().isPickingHintEnabled(PickingHint.Collidable)) {
      return;
    }

    if (spatial instanceof Node) {
      final Node node = (Node) spatial;

      if (node.getWorldBound().intersects(scene.getWorldBound())) {
        // further checking needed.
        for (int i = 0; i < node.getNumberOfChildren(); i++) {
          PickingUtil.findCollisions(node.getChild(i), scene, results);
        }
      }
    } else if (spatial instanceof Mesh) {
      final Mesh mesh = (Mesh) spatial;

      if (mesh.getWorldBound().intersects(scene.getWorldBound())) {
        if (scene instanceof Node) {
          final Node parent = (Node) scene;
          for (int i = 0; i < parent.getNumberOfChildren(); i++) {
            PickingUtil.findCollisions(mesh, parent.getChild(i), results);
          }
        } else {
          results.addCollision(mesh, (Mesh) scene);
        }
      }
    }
  }
Ejemplo n.º 2
0
  public static boolean hasCollision(
      final Spatial spatial, final Spatial scene, final boolean checkPrimitives) {
    if (spatial == scene
        || spatial.getWorldBound() == null
        || !spatial.getSceneHints().isPickingHintEnabled(PickingHint.Collidable)
        || !scene.getSceneHints().isPickingHintEnabled(PickingHint.Collidable)) {
      return false;
    }

    if (spatial instanceof Node) {
      final Node node = (Node) spatial;

      if (node.getWorldBound().intersects(scene.getWorldBound())) {
        if (node.getNumberOfChildren() == 0 && !checkPrimitives) {
          return true;
        }
        // further checking needed.
        for (int i = 0; i < node.getNumberOfChildren(); i++) {
          if (PickingUtil.hasCollision(node.getChild(i), scene, checkPrimitives)) {
            return true;
          }
        }
      }
    } else if (spatial instanceof Mesh) {
      final Mesh mesh = (Mesh) spatial;

      if (mesh.getWorldBound().intersects(scene.getWorldBound())) {
        if (scene instanceof Node) {
          final Node parent = (Node) scene;
          for (int i = 0; i < parent.getNumberOfChildren(); i++) {
            if (PickingUtil.hasCollision(mesh, parent.getChild(i), checkPrimitives)) {
              return true;
            }
          }

          return false;
        }

        if (!checkPrimitives) {
          return true;
        }

        return PickingUtil.hasTriangleCollision(mesh, (Mesh) scene);
      }

      return false;
    }

    return false;
  }
Ejemplo n.º 3
0
  public static void findPick(final Spatial spatial, final Ray3 ray, final PickResults results) {
    if (!spatial.getSceneHints().isPickingHintEnabled(PickingHint.Pickable)) {
      return;
    }

    if (spatial instanceof Node) {
      final Node node = (Node) spatial;

      if (node.getNumberOfChildren() == 0 || node.getWorldBound() == null) {
        return;
      }
      if (node.getWorldBound().intersects(ray)) {
        // further checking needed.
        for (int i = 0; i < node.getNumberOfChildren(); i++) {
          PickingUtil.findPick(node.getChild(i), ray, results);
        }
      }
    } else if (spatial instanceof Mesh) {
      final Mesh mesh = (Mesh) spatial;

      if (mesh.getWorldBound() == null) {
        return;
      }
      if (mesh.getWorldBound().intersects(ray)) {
        // find the primitive that is being hit.
        // add this node and the primitive to the PickResults list.
        results.addPick(ray, mesh);
      }
    }
  }