private void Update()
{
// Check if this source's transform has changed.
if (transform.hasChanged)
{
m_Dirty = true;
// Recalculate camera bounds.
m_CameraBounds = LOSHelper.CalculateSourceBounds(m_Camera);
// Reset transform changed flag.
transform.hasChanged = false;
}
// Check if this source and it's frustum are visible to the camera used by the LOS mask.
m_IsVisibile = GeometryUtility.TestPlanesAABB(LOSMask.CameraFrustumPlanes, m_CameraBounds);
// Only update frustum planes when the source is visible and dirty.
if (m_IsVisibile && m_Dirty)
{
// Recalculate frustum planes.
LOSHelper.ExtractFrustumPlanes(m_FrustumPlanes, m_Camera);
m_Dirty = false;
}
}
private void OnEnable()
{
// Register with LOS manager singleton.
LOSManager.Instance.AddLOSSource(this);
// Check if component can be enabled.
enabled &= Util.Verify(m_Camera != null, "Camera Component missing");
if (enabled)
{
// Alert user if camera is set to orthographic.
Debug.Assert(!m_Camera.orthographic, "Cameras attached to an LOS source can't be orthographic, changing to perspective!");
// Initiliaze source camera.
LOSHelper.InitSourceCamera(m_Camera);
// Initiliaze bounds.
m_CameraBounds = LOSHelper.CalculateSourceBounds(m_Camera);
// Initiliaze frustum planes.
LOSHelper.ExtractFrustumPlanes(m_FrustumPlanes, m_Camera);
}
}