public void Cull(Camera cam)
{
Object3D obj;
int i;
cam.Reset();
if (m_Objects.Count > 0)
{
try
{
switch (cam.CheckFrustum(m_vPosition, m_fRadius))
{
case Camera.CullState.AllInside:
for (i = 0; i < m_Objects.Count; i++)
{
obj = (Object3D)m_Objects.GetByIndex(i);
obj.Range = cam.GetDistance(obj);
obj.Culled = false;
m_Objects.SetByIndex(i, obj);
cam.AddVisibleObject(obj);
}
break;
case Camera.CullState.AllOutside:
if (m_Parent == null) // i.e. if this is the root quad
{
goto case Camera.CullState.PartiallyIn;
}
// do nothing since the default state is true (reset after each render)
break;
case Camera.CullState.PartiallyIn:
if (m_NorthEast != null)
{
m_NorthEast.Cull(cam);
m_NorthWest.Cull(cam);
m_SouthWest.Cull(cam);
m_SouthEast.Cull(cam);
}
else // if partially in at the bottom level treat as in
{
for (i = 0; i < m_Objects.Count; i++)
{
obj = (Object3D)m_Objects.GetByIndex(i);
obj.Culled = false;
m_Objects.SetByIndex(i, obj);
cam.AddVisibleObject(obj);
}
}
break;
}
}
catch (DirectXException d3de)
{
Console.AddLine("Unable to cull object");
Console.AddLine(d3de.ErrorString);
}
catch (Exception e)
{
Console.AddLine("Unable to cull object");
Console.AddLine(e.Message);
}
}
}
