63 lines
1.3 KiB
Python
63 lines
1.3 KiB
Python
"""
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${NAME}
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"""
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from __future__ import absolute_import, division, print_function, unicode_literals
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import logging
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log = logging.getLogger(__name__)
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from OpenGL import GL
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class Drawable(object):
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def __init__(self):
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super(Drawable, self).__init__()
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self._displayList = None
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self.invalidList = True
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self.children = []
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def setUp(self):
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"""
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Set up rendering settings and view matrices
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:return:
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:rtype:
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"""
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def tearDown(self):
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"""
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Return any settings changed in setUp to their previous states
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:return:
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:rtype:
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"""
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def drawSelf(self):
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"""
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Draw this drawable, if it has its own graphics.
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:return:
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:rtype:
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"""
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def _draw(self):
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self.setUp()
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self.drawSelf()
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for child in self.children:
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child.draw()
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self.tearDown()
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def draw(self):
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if self._displayList is None:
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self._displayList = GL.glGenLists(1)
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if self.invalidList:
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self.compileList()
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GL.glCallList(self._displayList)
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def compileList(self):
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GL.glNewList(self._displayList, GL.GL_COMPILE)
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self._draw()
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GL.glEndList()
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self.invalidList = False
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def invalidate(self):
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self.invalidList = True
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