//internal update method
UpdateFrequency IUpdate.Update(UpdateState state)
{
if (disposed)
return UpdateFrequency.Terminate;
if (systemData == null)
return UpdateFrequency.FullUpdate60hz;
//draw proc only makes it's callback if system isn't null
drawProc.system = null;
if (enabled)
{
//system logic is performed as a thread task
threadWaitCallback.WaitForCompletion();
if (!pauseUpdatesWhileCulled ||
this.drawProc.AnyChildDrawnLastFrame)
{
//particle system is enabled, and isn't offscreen
BufferSpawnData();
//start the task
threadWaitCallback = state.Application.ThreadPool.QueueTask(threadAction, null);
//draw proc only makes it's callback if system isn't null
drawProc.system = this;
}
}
//asks the application to call Draw() on the drawProc when the frame begins
//as currnetly in update()
state.PreFrameDraw(drawProc);
return systemLogic.UpdateFrequency;
}
