this module adds a simple widget to control rgb curves.
select which curve to edit in the combo box.
click into the curve widget to add a new control point, right click to remove the
vertex under the mouse. the curves are cubic splines, so you can control the
slopes at the beginning and end of the spline (via the sliders for ddr0 and
ddrn, for instance).
unlike the filmcurv module, this module attempts no colour correction of
any kind on top of the changes directly reflected by the curves.
channel show r,g, or b curve for editing in the dspy widgetmode choose to which channel to apply curves toddr0 the slope of the curve before the leftmost control vertexddg0 the slope of the curve before the leftmost control vertexddb0 the slope of the curve before the leftmost control vertexddrn the slope of the curve after the rightmost control vertexddgn the slope of the curve after the rightmost control vertexddbn the slope of the curve after the rightmost control vertexinput attach either scene referred linear or display referred here. the curves operate in [0,1] but extend past the last control point with constant slopesoutput the processed image, with per-channel curves applieddspy the interactive visualisation of the three curves