Have additional curve in 1D projections: the ROI projection

In the Fit view, 1D projections can be plotted by clicking on certain surface positions.

The center of mass or gaussian fit are taken from projections of the ROI intensity, but in the fitview, the projections of all intensity is shown. Ideally, This would be something like a dashed curve and the projected ROI intensity would be a second, solid curve.

I expect low work load?!?