def setCascadingHighlightNodesFromOrderedDependencies(self, dagNodeOrigin):
        highlightDrawNodesDarkToLight = [self.drawNode(n) for n in self.dag.orderedNodeDependenciesAt(dagNodeOrigin, onlyUnfulfilled=False)]
        intensities = list()
        nodeCount = len(highlightDrawNodesDarkToLight)
        if nodeCount > 1:
            for i in range(nodeCount):
                intensities.append(0.65 + (0.35 * float(i)/float(nodeCount-1)))
        else:
            intensities = [1.0]
        self.setHighlightNodes(highlightDrawNodesDarkToLight, intensities)
Recover a list of ordered dependencies for a given dag node, and 
dataset/ETHPy150Open andrew-gardner/dependsworkflow/depends/depends_graphics_widgets.py/SceneWidget.setCascadingHighlightNodesFromOrderedDependencies