[Feature Request] Extrapolation in Preview tab

[ryanbugden]

Can we make extrapolation possible in the Preview panel? I think this can be helpful in the design process as a preview before adding an instance.

This is invalid in the UI (given a weight axis from 400 to 700):

Current workarounds:

1. A script override works:

ds = CurrentDesignspace()
ds.setPreviewLocation(dict(weight=1000))

2. Or making an additional instance that is out of axis bounds and viewing it as an instance in Preview tab.

Implementation ideas:

• Make the slider more expansive than the axis range, adding tick marks for the axis bounds. Downside is that you'd probably have to decide upon an arbitrary value padding.
• Keep slider as is but somehow allow the float value text field to go above or below the bounds of the slider.