I find myself trying this, but it’s not there (meaning, it must be intuitive, but Rhino doesn’t agree):
Over and over again I draw solids which I then want to extrude in different directions. To do so in a fluent manner it would be extremely helpful if Extract Isocurve (or Cut with Isocurve) would support defining an offset distance from a corner or edge for the Isocurve to be cut or drawn.
Then one could Cut & Extrude in a very rapid pace.
Use case example: Think of a wall system in a house, or kitchen cabinets. In no time one could draw the basic box-shapes - in “free form” - although still applying standard dimensions (by offsets from corners & edges). Just Cut and Drag out Extrusions. The Isocurve extraction offsets should work in all directions (horizontally and vertically).
That would be something.
Can you provide an image showing what you’re after? I’m not sure I get it from the explanation (not that it matters though, since I’m not from McNeel. Just curious if I run into the same issue).
See below for a simple example. Notice that one has to perform three (no, four) separate steps for each Cut & Extrude, and these four steps could (should) be combined and started with one command:
- Extract Surface (can’t cut it a single Srf otherwise)
- Cut with Isocurve (this should support “offset from edge, or point”)
- Drag (drag supports a distance, so that’s OK)
I imagine this demonstrates a “common and quite useful” usecase.
Oeehh, I like that.
I guess for your specific example I’d use the oneview drawing mode and offset the edge with a flat cap and then extrude the square that gets created from the offset.
“Flat cap”? What is that?
Anyway, when I tried it earlier, offset doesn’t seem to work for vertical lines/edges(?)
Try this Macro for your above example:
_Cplane _Surface _Pause _Enter _Enter _Offset _Pause _Cap=Flat _Throughpoint _Pause _Pause _Sellast _Cplane _World _Top _Extrude _DeleteInput=Yes
First select the surface on which you want to extrude, then select the edge which you would like to offset from. Then enter extrusion length.
I just tried it very quickly so probably not 100% fail proof.
After trying it a bit it seems to work quite well. Thank you for this hint! It does the job.