/// <summary>Called on a pool if a camera was requested.
/// This call occurs when something on the main UI is being rendered ontop of an inline camera.</summary>
public bool CheckCameraRequired(){
if(!CameraRequested){
return false;
}
// Clear the request:
CameraRequested=false;
// A camera is required!
// Get the main UI renderer:
Renderman renderer=UI.GetRenderer();
// We must create a UICamera (or pull one from the pool):
UICamera camera=GetPooledCamera();
if(camera==null){
// Create one:
camera=new UICamera(renderer);
}
// Add it to the main set:
AddCamera(camera);
// Next, set the current depth:
camera.SetDepth(AllocatedDepth);
// Finally, we must now make sure any batches are parented to this new camera.
// We do this by setting it to the root of the renderer:
renderer.Node=camera.Gameobject;
return true;
}
/// <summary>Resets the pool. Called before a main UI layout occurs.</summary>
public void Reset(){
CameraRequested=false;
CameraDepth=UI.CameraDepth;
// Push all active cameras into the inactive pool:
DidLayout=true;
FirstPoolCamera=FirstCamera;
LastPoolCamera=LastCamera;
FirstCamera=null;
LastCamera=null;
}
/// <summary>Adds the given active camera to the main linked list for processing.</summary>
public void AddCamera(UICamera camera){
if(FirstCamera==null){
FirstCamera=LastCamera=camera;
}else{
LastCamera=LastCamera.CameraAfter=camera;
}
}
/// <summary>Gets a camera from the inactive pool. Null if the pool is empty.</summary>
public UICamera GetPooledCamera(){
if(FirstPoolCamera==null){
return null;
}
UICamera result=FirstPoolCamera;
FirstPoolCamera=result.CameraAfter;
result.CameraAfter=null;
return result;
}
/// <summary>Clears the inactive pool.</summary>
public void ClearPool(){
DidLayout=false;
UICamera current=FirstPoolCamera;
FirstPoolCamera=null;
LastPoolCamera=null;
while(current!=null){
current.Destroy();
current=current.CameraAfter;
}
}
/// <summary>Destroys everything in this set.</summary>
public void Destroy(){
// Clear the pool:
ClearPool();
// Put the whole active set into the inactive pool:
FirstPoolCamera=FirstCamera;
FirstCamera=null;
LastCamera=null;
// Clear the pool again:
ClearPool();
}