def _number_of_colors_changed(self, value):
if self.lut_mode == 'file':
return
elif self.lut_mode in pylab_luts:
# We can't interpolate these LUTs, as they are defined from a
# table. We hack around this limitation
reverse = self.reverse_lut
lut = pylab_luts[self.lut_mode]
if reverse:
lut = lut[::-1, :]
n_total = len(lut)
if value > n_total:
return
lut = lut[::int(round(n_total/float(value)))]
self.load_lut_from_list(lut.tolist())
else:
lut = self.lut
lut.number_of_table_values = value
lut.modified()
lut.build()
self.render() # necessary to flush.
sc_bar = self.scalar_bar
sc_bar.maximum_number_of_colors = value
sc_bar.modified()
self.render()
def _number_of_colors_changed(self, value):
if self.lut_mode == 'file':
return
elif self.lut_mode in pylab_luts:
# We can't interpolate these LUTs, as they are defined from a
# table. We hack around this limitation
reverse = self.reverse_lut
lut = pylab_luts[self.lut_mode]
if reverse:
lut = lut[::-1, :]
n_total = len(lut)
if value > n_total:
return
lut = lut[::round(n_total / float(value))]
self.load_lut_from_list(lut.tolist())
else:
lut = self.lut
lut.number_of_table_values = value
lut.modified()
lut.build()
self.render() # necessary to flush.
sc_bar = self.scalar_bar
sc_bar.maximum_number_of_colors = value
sc_bar.modified()
self.render()
def _lut_mode_changed(self, value):
if value == "file":
if self.file_name:
self.load_lut_from_file(self.file_name)
# self.lut.force_build()
return
reverse = self.reverse_lut
if value in pylab_luts:
lut = pylab_luts[value]
if reverse:
lut = lut[::-1, :]
n_total = len(lut)
n_color = self.number_of_colors
if not n_color >= n_total:
lut = lut[:: round(n_total / float(n_color))]
self.load_lut_from_list(lut.tolist())
# self.lut.force_build()
return
elif value == "blue-red":
if reverse:
hue_range = 0.0, 0.6667
saturation_range = 1.0, 1.0
value_range = 1.0, 1.0
else:
hue_range = 0.6667, 0.0
saturation_range = 1.0, 1.0
value_range = 1.0, 1.0
elif value == "black-white":
if reverse:
hue_range = 0.0, 0.0
saturation_range = 0.0, 0.0
value_range = 1.0, 0.0
else:
hue_range = 0.0, 0.0
saturation_range = 0.0, 0.0
value_range = 0.0, 1.0
lut = self.lut
lut.set(
hue_range=hue_range,
saturation_range=saturation_range,
value_range=value_range,
number_of_table_values=self.number_of_colors,
ramp="sqrt",
)
lut.modified()
lut.force_build()
self.render()
def _lut_mode_changed(self, value):
if value == 'file':
if self.file_name:
self.load_lut_from_file(self.file_name)
#self.lut.force_build()
return
reverse = self.reverse_lut
if value in pylab_luts:
lut = pylab_luts[value]
if reverse:
lut = lut[::-1, :]
n_total = len(lut)
n_color = self.number_of_colors
if not n_color >= n_total:
lut = lut[::round(n_total / float(n_color))]
self.load_lut_from_list(lut.tolist())
#self.lut.force_build()
return
elif value == 'blue-red':
if reverse:
hue_range = 0.0, 0.6667
saturation_range = 1.0, 1.0
value_range = 1.0, 1.0
else:
hue_range = 0.6667, 0.0
saturation_range = 1.0, 1.0
value_range = 1.0, 1.0
elif value == 'black-white':
if reverse:
hue_range = 0.0, 0.0
saturation_range = 0.0, 0.0
value_range = 1.0, 0.0
else:
hue_range = 0.0, 0.0
saturation_range = 0.0, 0.0
value_range = 0.0, 1.0
lut = self.lut
lut.set(hue_range=hue_range,
saturation_range=saturation_range,
value_range=value_range,
number_of_table_values=self.number_of_colors,
ramp='sqrt')
lut.modified()
lut.force_build()
self.render()