Hi all !
I’m in desperate need of a way to modelise Curved Surfaces from Splines i created in Autocad…
I tried to create a surface and then _CreateUVcrv to draw to slope of the ramp but the thing is that it makes a poly-surface because its not a simple curve… therefor i can’t use the command _CreateUVcrv.
Any of you know the easiest and fastest way to do this? I need to modelise this … ( 
)
Thanks in advance !
Cheers
Simon
Perhaps variations on this process:
Using the freehand Control Point Curve tool to draw a road that crosses over itself.
Turn Points On to lift points on the “overpass” upwards as denoted by the green line
In the Top View, use Curve > Offset with the bothsides option to make the parallel edges of the road
Remove the middle curve. Use the Polyline tool to connect end-to-end of the curves.
Surface > Sweep 2 Rails will ask for the 1st two curves followed by selecting the last cross-section curve. Voila, highway off-ramp.
Side guard rails may be a matter of just copying the edge curves upwards and again using the parallel curves to sweep a surface.
Check a youtube video called Rhinoceros 3d curved ramp. It may give you some ideas.----Mark
