Changeset 339

Timestamp:

10/29/02 23:20:20 (6 years ago)

Author:

sholloway

Message:

*** empty log message ***

Files:

• trunk/RBRapier/RBRapier/Renderer/BufferMgr.py (modified) (1 diff)

trunk/RBRapier/RBRapier/Renderer/BufferMgr.py

@@ -20 +20 @@
-##~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
+#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+#~ Imports 
+#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
+from OpenGL import GL
+from Foundation.AOSubjectObserver.StandardSubjects import SubjectList
+
+#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+#~ Definitions 
+#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+class BufferChangeElement(object):
+    """Encapsulates a single collection of attribute changes"""
+
+    Bitmask = 0
+
+    def __init__(self, Bitmask):
+        self.Bitmask |= Bitmask
+
+    def AddTracker(self, OnChange):
+        OnChange('add', self.Bitmask)
+
+    def RemoveTracker(self, OnChange):
+        OnChange('remove', self.Bitmask)
+
+#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+class DynamicAttributeChangeElement(object):
+    """Encapsulates a single collection of attribute changes"""
+
+    _Bitmask = 0
+
+    def __init__(self, Bitmask):
+        self.Trackers = SubjectList()
+        self.Bitmask |= Bitmask
+
+    def AddTracker(self, OnChange):
+        self.Trackers.Add(OnChange)
+        OnChange('add', self.Bitmask)
+
+    def RemoveTracker(self, OnChange):
+        self.Trackers.Remove(OnChange)
+        OnChange('remove', self.Bitmask)
+
+    #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+    def _getBitmask(self):
+        return self._Bitmask
+    def _setBitmask(self, value):
+        self._Bitmask = value
+        self.Trackers.Update('update', self._Bitmask)
+    def _delBitmask(self):
+        del self._Bitmask
+        self.Trackers.Update('update', self._Bitmask)
+
+    Bitmask = property(_getBitmask, _setBitmask)
+
+#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+class BufferTrackerBase(object):
+    #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    #~ Constants / Variables / Etc. 
+    #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+    Bitmask = 0
+    _ElementAttributeName = 'BufferClear'
+    _NeedUpdate = 1
+
+    #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    #~ Public Methods 
+    #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+    def __init__(self):
+        self.TrackedElements = []
+
+    def SequenceAdd(self, Sequence):
+        Sequence.OnAddELement.Add(self.OnAddElement)
+        Sequence.OnRemoveELement.Add(self.OnRemoveElement)
+
+    def OnAddElement(self, Element):
+        Change = getattr(Element, self._ElementAttributeName, None)
+        if Change is not None:
+            self.TrackedElements.append(Element)
+            Change.AddTracker(self.OnTrackedChange)
+
+    def OnRemoveElement(self, Element):
+        Change = getattr(Element, self._ElementAttributeName, None)
+        if Change is not None:
+            self.TrackedElements.remove(Element)
+            Change.RemoveTracker(self.OnTrackedChange)
+    
+    def OnTrackedChange(self, ChangeType, Change):
+        if ChangeType == 'add':
+            self.Bitmask |= Change
+        elif ChangeType == 'update':
+            self.Bitmask |= Change # this might overestimate the needed attribute saves
+            # self._NeedsUpdate = 1 # this might force unneeded updates.  life is so unfair ;)
+        elif ChangeType == 'remove':
+            self._NeedsUpdate = 1
+        else: 
+            raise ValueError, "ChangeType is expected to be one of ['add', 'update', 'remove'], but is '%s'" % ChangeType
+
+    def UpdateAttributes(self):
+        if self._NeedUpdate:
+            for each in self.TrackedELements:
+                self.Bitmask |= each.Bitmask
+            self._NeedUpdate = 0
+
+    def Execute(self, context):
+        pass
+    
+#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+class BufferTracker(BufferTrackerBase):
+    def SequenceAdd(self, Sequence):
+        AttributeTrackerBase.SequenceAdd(self, Sequence)
+        setattr(Sequence, self._ElementAttributeName, self)
+
+#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+class BufferEffector(BufferTrackerBase):
+    def Execute(self, context):
+        GL.glClear(self.Bitmask)
+