Guest Demfis Fyssicopulos Posted November 12, 2010 Share Posted November 12, 2010 Dear all, Can someone shine light on what is the best way to draw a curved ramp?. E.g High end hight is 4', and with a radius of 3'?. Thanks. df Quote Link to comment
Vectorworks, Inc Employee Robert Anderson Posted November 12, 2010 Vectorworks, Inc Employee Share Posted November 12, 2010 I say use a sweep. Quote Link to comment
Guest Demfis Fyssicopulos Posted November 13, 2010 Share Posted November 13, 2010 Hi Robert, Thank you for replying. That's what I have been trying but the best I can come up with are conical shapes.... Advise? df Quote Link to comment
Benson Shaw Posted November 13, 2010 Share Posted November 13, 2010 (edited) Set a locus representing the center of the sweep to the left of your profile poly. Select them both and sweep. Or, in stead of a sweep: In plan view, place 3 or 4 NURBS lines at proper z and rotation around an axis, arranged/placed kind of like control joints would be in a curved concrete ramp. Loft them, simple mode. -B Edited November 13, 2010 by Benson Shaw Quote Link to comment
GWS Posted November 13, 2010 Share Posted November 13, 2010 Pat had a good .mov at 'Vectortasks' but I can't get it to load. Quote Link to comment
Horst M. Posted November 13, 2010 Share Posted November 13, 2010 (edited) The Way it worked was cutting an extrude with a sweeped Line I also tried to project a the Ramp Profile up to the Sweep, but VW 2011 either refused to select the objects or crashed..... Edited November 13, 2010 by Horst M. Quote Link to comment
Guest Demfis Fyssicopulos Posted November 13, 2010 Share Posted November 13, 2010 Thank you everyone. I still can't seem to figure out the sweep, but I got it with solids and subtractions. df Quote Link to comment
Guest Frank Brault Posted November 13, 2010 Share Posted November 13, 2010 In this situation, I might consider using a round wall object set to 3 feet thick and 4 feet tall with the end peak set to zero on the low side of the ramp. Quote Link to comment
VincentCuclair Posted November 13, 2010 Share Posted November 13, 2010 (edited) I seem to have solved that once using a circular stair and by giving the stair very low tread heights ie. 1cm? And on another occasion i've tried (and I think I succeeded) using the helix tool(is it called that? like a cork screw)...... Edited November 13, 2010 by Vincent C Quote Link to comment
Horst M. Posted November 13, 2010 Share Posted November 13, 2010 I think the Coolest solution for that is the Curved Wall. Good to see, that at least NVW Employees know how to use the Software. :-) (and sometimes tell us!) Thanks Frank. While Playing with that Solution (tried to get a Solid) I dicovered, that one can convert a Wall and also a Sweep directly to to Nurbs Surfaces with the 3d POWERPACK. Cool! Has this always been the Case? I've also tried to Convert to Group: Useless result! (a bazillion of Polygons!) Quote Link to comment
bcd Posted November 13, 2010 Share Posted November 13, 2010 The cutting plane method is not really accurate enough for this as it doesn't produce a helical ramp and fails completely for ramps >90?. The Sweep tool is very powerful: In Front View draw a 2d-polygon describing a typical cross-section, or a line representing the surface of of the ramp. Place a 2d locus at the center of rotation relative to this cross-section. Select both Model>Sweep Set Arc angle to 90? for a 90? ramp. Set Pitch to 16' Using the Round Wall tool to solve this is a super idea. It's very fast & easily edited via the OIP. Quote Link to comment
bcd Posted November 13, 2010 Share Posted November 13, 2010 I think the Coolest solution for that is the Curved Wall. can convert a Wall and also a Sweep directly to to Nurbs Surfaces with the 3d POWERPACK. I've also tried to Convert to Group: Useless result! (a bazillion of Polygons!) You can also Extract the surfaces / lines of the wall. Great for additional modeling & creating Extrude along Path objects. Quote Link to comment
Horst M. Posted November 13, 2010 Share Posted November 13, 2010 (edited) The cutting plane method is not really accurate enough for this as it doesn't produce a helical ramp and fails completely for ramps >90?. Where does the inaccuracy come from. I produced the cutting Plane exactly how you discribe as a sweep. So, as far as I see it must work up to 360?. Edited November 13, 2010 by Horst M. Quote Link to comment
bcd Posted November 13, 2010 Share Posted November 13, 2010 (edited) Your cutting Surface isn't Planar. So my mistake, no inaccuracy there except in terminology. Edited November 13, 2010 by bcd Quote Link to comment
Guest Demfis Fyssicopulos Posted November 13, 2010 Share Posted November 13, 2010 Dear Frank, Thank you!. I really like the curve wall solution but where do I set the "end peak" value? df Quote Link to comment
Horst M. Posted November 14, 2010 Share Posted November 14, 2010 @bcd: I did some scetions. The Ramp surface is perfectly planar, with the curved Wall method and the cutting Plane. @df In a 3d View, you can doubleclick the wall and pull the upper Handle on one end down to the lower. Quote Link to comment
Guest Demfis Fyssicopulos Posted November 14, 2010 Share Posted November 14, 2010 Dear Horst, Wonderful!. Many thanks to you and everyone!. df Quote Link to comment
mike m oz Posted November 14, 2010 Share Posted November 14, 2010 Demfis you need to use Sweep with Pitch and a 2D locus to define the sweep origin: Quote Link to comment
Pat Stanford Posted November 17, 2010 Share Posted November 17, 2010 Sorry to take so long, but the movie showing how to make the curved ramp is back up. http://www.vectortasks.com/Movies/Movies.html Quote Link to comment
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