class Renderer:
"""
Renders the currently active layers and manages transitions between layer lists.
Also applies a gamma correction layer after everything else is rendered.
At the moment, this class does one of two things:
-Calls render on a fade object if one exists
-Otherwise, renders a list of active layers directly
"""
def __init__(self, layers=None, gamma=2.2):
self.activeLayers = layers
self.fade = None
self.gammaLayer = GammaLayer(gamma)
def render(self, model, params, frame):
if self.fade:
self.fade.render(model, params, frame)
# if the fade is finished, grab its end layers and just render those
if self.fade.done:
self.activeLayers = self.fade.endLayers
self.fade = None
elif self.activeLayers:
for layer in self.activeLayers:
layer.render(model, params, frame)
self.gammaLayer.render(model, params, frame)
def setFade(self, duration, nextLayers1, nextLayers2=None):
# TODO check for wonky behavior when one fade is set while another is still in progress
if nextLayers2:
self.fade = TwoStepLinearFade(self.activeLayers, nextLayers1, nextLayers2, duration)
else:
self.fade = LinearFade(self.activeLayers, nextLayers1, duration)
def __init__(self, layers=None, gamma=2.2):
self.activeLayers = layers
self.fade = None
self.gammaLayer = GammaLayer(gamma)
