algorithmic modeling for Rhino
I have come across the same problem. I guess it is a little bit tricky to create a GH-panel to place a 3D point on a 2D workspace.
However, the MD-Slider works on an XY-Plane. If you need to apply the MD-Slider in an XZ-Plane or YZ-Plane, you can fine a solution in the attaches file!
Sorry, the 3D mode doesn't work yet. Never got around to writing it.
i can't believe the easy way to do this, thanks for sharing!
Probably someone figured it out already, but by simply selecting the RGB rather than the HSV (default) space in the colour picker makes everything much easier and accurate, thus not actually needing a proper 3D MD Slider (well it actually becomes a proper 3D Slider already).
It's then easy to add any needed number transformation like remapping or a multiplier to tweak the bounds!
Thanks Adrijano for the hint! ;)