public void RemoveObject(ViewableObject viewable)
{
if (!this.viewableObjects.ContainsKey(viewable.Name))
{
return;
}
int idx = this.viewableObjects.IndexOfKey(viewable.Name);
this.viewableObjects.Remove(viewable.Name);
if (viewable.QuadTreeNodes.Count > 0)
{
viewable.QuadTreeNodes.Clear();
}
this.viewableObjects.RemoveAt(idx);
if (this.northeastNode != null)
{
this.northeastNode.RemoveObject(viewable);
}
if (this.northwestNode != null)
{
this.northwestNode.RemoveObject(viewable);
}
if (this.southeastNode != null)
{
this.southeastNode.RemoveObject(viewable);
}
if (this.southwestNode != null)
{
this.southwestNode.RemoveObject(viewable);
}
}
public void AddObject(ViewableObject viewable)
{
if (!viewable.IsInsideRectangle(this.quadBounds))
{
return;
}
if (this.viewableObjects.ContainsKey(viewable.Name))
{
return;
}
this.viewableObjects.Add(viewable.Name, viewable);
viewable.QuadTreeNodes.Add(this);
if (this.northeastNode != null && viewable.IsInsideRectangle(this.northeastNode.Bounds))
{
this.northeastNode.AddObject(viewable);
}
if (this.northwestNode != null && viewable.IsInsideRectangle(this.northwestNode.Bounds))
{
this.northwestNode.AddObject(viewable);
}
if (this.southeastNode != null && viewable.IsInsideRectangle(this.southeastNode.Bounds))
{
this.southeastNode.AddObject(viewable);
}
if (this.southwestNode != null && viewable.IsInsideRectangle(this.southwestNode.Bounds))
{
this.southwestNode.AddObject(viewable);
}
}
/// <summary>
/// Gets the cull state of a viewable object.
/// </summary>
/// <param name="viewableObject">The object to get the cull state for.</param>
/// <returns></returns>
public CullState GetCullState(ViewableObject viewableObject)
{
if (viewableObject == null)
{
throw new ArgumentNullException("viewableObject");
}
CullState state;
state = GetCullState(viewableObject.Position, viewableObject.BoundingRadius);
return(state);
}
/// <summary>
/// Gets the distance from a the camera to a viewable object.
/// </summary>
/// <param name="viewableObject"></param>
/// <returns></returns>
public float GetDistanceFrom(ViewableObject viewableObject)
{
if (viewableObject == null)
{
throw new ArgumentNullException("viewableObject");
}
float distance;
distance = Plane.DotCoordinate(this.frustumPlanes[3], viewableObject.Position);
distance += this.nearPlaneDistance;
return(distance);
}
public void Update(ViewableObject viewableObject)
{
bool _needReset = false;
foreach (QuadTreeNode node in viewableObject.QuadTreeNodes)
{
if (!viewableObject.IsInsideRectangle(node.Bounds))
{
//there's at least 1 object that's no longer in
//the view. Need a reset.
_needReset = true;
break;
}
}
if (_needReset)
{
BaseNode.RemoveObject(viewableObject);
BaseNode.AddObject(viewableObject);
}
}
public virtual bool HasCollidedWith(ViewableObject otherObject)
{
return(false);
}