nophead wrote > > adrian wrote >> No, wrong direction. > You seem to want a module higher in the tree to affect a module lower in > the tree. That is the right direction for dynamic scope variables. They > are visible to all the lower modules in the tree, i.e. nearer and > including the leaves. > > So instead of using color in foo you use a module that gets information > from higher in tree to set the colour. Oh, you're right, but you can't modify based on the previous value, you can only override th value. So, given the example I suggested, I can *set*, but not *increase *or *decrease*. Or perhaps I could but not in a scalable way. -- View this message in context: http://forum.openscad.org/Is-there-a-way-to-determine-if-doing-a-render-as-opposed-to-a-preview-tp20588p20604.html Sent from the OpenSCAD mailing list archive at Nabble.com.

Thanks Greg, Forgot about that operator. Still, I need the context, so not exactly what I'm looking for. -- View this message in context: http://forum.openscad.org/Is-there-a-way-to-determine-if-doing-a-render-as-opposed-to-a-preview-tp20588p20605.html Sent from the OpenSCAD mailing list archive at Nabble.com.

I don't see why you can't do exactly what you want as you can pass as much down the tree as you want, but without coding it myself I can't be sure. On 26 February 2017 at 20:15, adrian <adrianh.bsc@gmail.com> wrote: > Thanks Greg, > > Forgot about that operator. Still, I need the context, so not exactly what > I'm looking for. > > > > -- > View this message in context: http://forum.openscad.org/Is- > there-a-way-to-determine-if-doing-a-render-as-opposed-to- > a-preview-tp20588p20605.html > Sent from the OpenSCAD mailing list archive at Nabble.com. > > _______________________________________________ > OpenSCAD mailing list > Discuss@lists.openscad.org > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org >

Hi nophead, Try doing it with the example that I posted above: module foo(){ color([1,0,0,.5]) sphere(r=10); translate([10,0,0]) color([0,1,0,.25]) sphere(r=10);} -- View this message in context: http://forum.openscad.org/Is-there-a-way-to-determine-if-doing-a-render-as-opposed-to-a-preview-tp20588p20607.html Sent from the OpenSCAD mailing list archive at Nabble.com.