root/trunk/RBRapier/RBRapier/Renderer/AttributeMgr.py

#!/usr/bin/env python
##~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
##~ License 
##~ 
##- The RuneBlade Foundation library is intended to ease some 
##- aspects of writing intricate Jabber, XML, and User Interface (wxPython, etc.) 
##- applications, while providing the flexibility to modularly change the 
##- architecture. Enjoy.
##~ 
##~ Copyright (C) 2002  TechGame Networks, LLC.
##~ 
##~ This library is free software; you can redistribute it and/or
##~ modify it under the terms of the BSD style License as found in the 
##~ LICENSE file included with this distribution.
##~ 
##~ TechGame Networks, LLC can be reached at:
##~ 3578 E. Hartsel Drive #211
##~ Colorado Springs, Colorado, USA, 80920
##~
##~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#~ Imports 
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

from OpenGL import GL
from ChangeBaseMgr import *

#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#~ Definitions 
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

class AttributeChangeElement(BitmaskChangeElement):
    """Encapsulates a single collection of attribute changes"""

class DynamicAttributeChangeElement(DynamicBitmaskChangeElement):
    """Encapsulates a single collection of attribute changes"""

class AttributeTracker(DynamicBitmaskChangeTracker):
    _ElementAttributeName = 'AttributeChange'

class AttributeEffector(AttributeTracker):
    def SequenceAdd(self, Sequence):
        DynamicBitmaskChangeTracker.SequenceAdd(self, Sequence)
        Sequence.OnBeginExecute.Add(self.GLSelect)
        Sequence.OnEndExecute.Add(self.GLDeselect)

    def GLSelect(self, context):
        GL.glPushAttrib(self.Bitmask)
        
    def GLDeselect(self, context):
        GL.glPopAttrib()

#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#~ Client Attributes
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

class ClientAttributeChangeElement(BitmaskChangeElement):
    """Encapsulates a single collection of client attribute changes"""

class DynamicClientAttributeChangeElement(DynamicBitmaskChangeElement):
    """Encapsulates a single collection of client attribute changes"""

class ClientAttributeTracker(DynamicBitmaskChangeTracker):
    _ElementAttributeName = 'ClientAttributeChange'

class ClientAttributeEffector(ClientAttributeTracker):
    def SequenceAdd(self, Sequence):
        DynamicBitmaskChangeTracker.SequenceAdd(self, Sequence)
        Sequence.OnBeginExecute.Add(self.GLSelect)
        Sequence.OnEndExecute.Add(self.GLDeselect)

    def GLSelect(self, context):
        GL.glPushClientAttrib(self.Bitmask)
        
    def GLDeselect(self, context):
        GL.glPopClientAttrib()