Summer 2010 CMU ETC PandaLE team: added two functions addDisplayRegionContext and removeDisplayRegionContext to add and remove display regions on the fly

direct/src/directtools/DirectSession.py

@@ -1301,6 +1301,15 @@ class DisplayRegionList(DirectObject):
         # hack to test movement
         return Task.cont
         
+    def addDisplayRegionContext(self, cam):
+        self.displayRegionList.append(DisplayRegionContext(cam))
+        
+    def removeDisplayRegionContext(self, cam):
+        for drc in self.displayRegionList:
+            if drc.cam == cam:
+                self.displayRegionList.remove(drc)
+                break
+
 # Create one
 __builtins__['direct'] = base.direct = DirectSession()