def __init__(self, wsize, threshold_min, threshold_max, thicknessMin, thicknessMax):
StrokeShader.__init__(self)
self._func = DensityF0D(wsize)
self.threshold_min = threshold_min
self.threshold_max = threshold_max
self._thicknessMin = thicknessMin
self._thicknessMax = thicknessMax
def shade(self, stroke):
n = stroke.stroke_vertices_size()
i = 0
it = stroke.stroke_vertices_begin()
func = DensityF0D(self.wsize)
while not it.is_end:
c = func(Interface0DIterator(it))
if c < self.threshold_min:
c = self.threshold_min
if c > self.threshold_max:
c = self.threshold_max
## t = (c - self.threshold_min)/(self.threshold_max - self.threshold_min)*(self._thicknessMax-self._thicknessMin) + self._thicknessMin
t = (self.threshold_max - c )/(self.threshold_max - self.threshold_min)*(self._thicknessMax-self._thicknessMin) + self._thicknessMin
it.object.attribute.thickness = (t/2.0, t/2.0)
i = i+1
it.increment()