/// <summary>
/// Update a single Cinemachine Virtual Camera if and only if it
/// hasn't already been updated this frame. Always update vcams via this method.
/// Calling this more than once per frame for the same camera will have no effect.
/// </summary>
internal bool UpdateVirtualCamera(ICinemachineCamera vcam, Vector3 worldUp, float deltaTime)
{
//UnityEngine.Profiling.Profiler.BeginSample("CinemachineCore.UpdateVirtualCamera");
int now = Time.frameCount;
UpdateFilter filter = CurrentUpdateFilter;
bool isSmartUpdate = filter != UpdateFilter.ForcedFixed &&
filter != UpdateFilter.ForcedLate;
bool isSmartLateUpdate = filter == UpdateFilter.Late;
if (!isSmartUpdate)
{
if (filter == UpdateFilter.ForcedFixed)
{
filter = UpdateFilter.Fixed;
}
if (filter == UpdateFilter.ForcedLate)
{
filter = UpdateFilter.Late;
}
}
if (mUpdateStatus == null)
{
mUpdateStatus = new Dictionary <ICinemachineCamera, UpdateStatus>();
}
if (vcam.VirtualCameraGameObject == null)
{
if (mUpdateStatus.ContainsKey(vcam))
{
mUpdateStatus.Remove(vcam);
}
//UnityEngine.Profiling.Profiler.EndSample();
return(false); // camera was deleted
}
UpdateStatus status;
if (!mUpdateStatus.TryGetValue(vcam, out status))
{
status = new UpdateStatus(now);
mUpdateStatus.Add(vcam, status);
}
int subframes = isSmartLateUpdate ? 1 : CinemachineBrain.GetSubframeCount();
if (status.lastUpdateFrame != now)
{
status.lastUpdateSubframe = 0;
}
// If we're in smart update mode and the target moved, then we must examine
// how the target has been moving recently in order to figure out whether to
// update now
bool updateNow = !isSmartUpdate;
if (isSmartUpdate)
{
Matrix4x4 targetPos;
if (!GetTargetPosition(vcam, out targetPos))
{
updateNow = isSmartLateUpdate; // no target
}
else
{
updateNow = status.ChoosePreferredUpdate(now, targetPos, filter)
== filter;
}
}
if (updateNow)
{
status.preferredUpdate = filter;
while (status.lastUpdateSubframe < subframes)
{
//Debug.Log(vcam.Name + ": frame " + Time.frameCount + "." + status.lastUpdateSubframe + ", " + CurrentUpdateFilter + ", deltaTime = " + deltaTime);
vcam.UpdateCameraState(worldUp, deltaTime);
++status.lastUpdateSubframe;
}
status.lastUpdateFrame = now;
}
mUpdateStatus[vcam] = status;
//UnityEngine.Profiling.Profiler.EndSample();
return(true);
}