/// <summary>Applies the composer rules and orients the camera accordingly</summary>
/// <param name="curState">The current camera state</param>
/// <param name="statePrevFrame">The camera state on the previous frame (unused)</param>
/// <param name="deltaTime">Used for calculating damping. If less than
/// or equal to zero, then target will snap to the center of the dead zone.</param>
/// <returns>curState with RawOrientation applied</returns>
public CameraState MutateCameraState(
CameraState curState, CameraState statePrevFrame, float deltaTime)
{
if (!IsValid || !curState.HasLookAt)
{
return(curState);
}
CameraState newState = curState;
newState.ReferenceLookAt = GetTrackedPoint(newState.ReferenceLookAt);
if ((newState.ReferenceLookAt - newState.CorrectedPosition).AlmostZero())
{
return(newState); // navel-gazing, get outa here
}
CinemachineBrain brain = CinemachineCore.Instance.FindPotentialTargetBrain(VirtualCamera);
float aspect = brain != null ? brain.OutputCamera.aspect : 1;
float fovH = CameraUtilities.CalculateHorizontalFOV(newState.Lens.FieldOfView, aspect);
Rect softGuideFOV = ScreenToFOV(SoftGuideRect, newState.Lens.FieldOfView, fovH, aspect);
if (deltaTime <= 0)
{
// No damping, just snap to central bounds, skipping the soft zone
Rect rect = new Rect(softGuideFOV.center, Vector2.zero); // Force to center
newState.RawOrientation = PlaceWithinScreenBounds(
ref newState, rect, newState.RawOrientation, fovH, 0);
}
else
{
// Start with previous frame's orientation (but with current up)
Quaternion rigOrientation = Quaternion.LookRotation(
statePrevFrame.RawOrientation * Vector3.forward, newState.ReferenceUp);
// First force the previous rotation into the hard bounds, no damping
Rect hardGuideFOV = ScreenToFOV(HardGuideRect, newState.Lens.FieldOfView, fovH, aspect);
newState.RawOrientation = PlaceWithinScreenBounds(
ref newState, hardGuideFOV, rigOrientation, fovH, 0);
// Now move it through the soft zone, with damping
newState.RawOrientation = PlaceWithinScreenBounds(
ref newState, softGuideFOV, newState.RawOrientation, fovH, deltaTime);
}
newState.RawOrientation = UnityQuaternionExtensions.Normalized(newState.RawOrientation);
return(newState);
}
