def _on_colormap_change(self):
cmap = self.layer.colormap[1]
if self.layer.gamma != 1:
# when gamma!=1, we instantiate a new colormap with 256 control points from 0-1
cmap = Colormap(cmap[np.linspace(0, 1, 256)**self.layer.gamma])
if self.layer.dims.ndisplay == 3:
self.node.view_program['texture2D_LUT'] = (cmap.texture_lut() if (
hasattr(cmap, 'texture_lut')) else None)
self.node.cmap = cmap
def _on_colormap_change(self, event=None):
if self.layer.gamma != 1:
# when gamma!=1, we instantiate a new colormap with 256 control
# points from 0-1
colors = self.layer.colormap.map(
np.linspace(0, 1, 256)**self.layer.gamma)
cmap = VispyColormap(colors)
else:
cmap = VispyColormap(*self.layer.colormap)
if self.layer.dims.ndisplay == 3:
self.node.view_program['texture2D_LUT'] = (cmap.texture_lut() if (
hasattr(cmap, 'texture_lut')) else None)
self.node.cmap = cmap
