root/trunk/RBRapier/RBRapier/Renderer/View/ClippingPlane.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 RBRapier.Renderer.AttributeMgr import AttributeChangeElement
from RBRapier.Tools import Vector

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

class ClippingPlane(object):
    #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    #~ Constants / Variables / Etc. 
    #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    AttributeChange = AttributeChangeElement(GL.GL_TRANSFORM_BIT)

    PlaneNumber = 0
    Equation = Vector.Vector4Property('Equation')

    #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    #~ Public Methods 
    #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    def __init__(self, PlaneNumber=0, Equation=None):
        self.PlaneNumber = PlaneNumber
        if Equation is not None: 
            self.Equation = Equation

    def GLSelect(self, context):
        PlaneIdx = GL.GL_CLIP_PLANE0 + self.PlaneNumber
        GL.glClipPlane(PlaneIdx, self.Equation.tolist())
        context.StateMgr.Enable(PlaneIdx)
        
    def GLDeselect(self, context):
        PlaneIdx = GL.GL_CLIP_PLANE0 + self.PlaneNumber
        context.StateMgr.Disable(PlaneIdx)