TheSwamp

CAD Forums => Vertically Challenged => Land Lubber / Geographically Positioned => Topic started by: sinc on March 13, 2006, 11:12:39 AM

Title: SincPac Land/Civil Extensions
Post by: sinc on March 13, 2006, 11:12:39 AM

I have uploaded a collection of Land Desktop/Civil Design extensions to the Lilly Pond.  These extensions are designed primarily with the surveyor in mind.

A synopsis:

• Identify elevations of selected points, based on an alignment FG profile and optional cross-slope.
• Datum-adjust existing Cogo points based on an existing surface, a FG profile, a FG profile with changing cross-slope (super-elevation), or straight-grade between selected points.
• Create graded offset points from 2D linework and spot elevations.  Creates Cogo points that are evenly-spaced between horizontal and vertical breaks, as well as optional radius points for arcs and arc segments in polylines.
• Create lines on evenly-spaced stations along an alignment.
• A command that functions much like the DISTANCE command, but gives information more useful to civil engineers and surveyors.
• A command that displays the current zoom factor of one or more viewports in decimal form, then lets you change it by keying in a decimal value.

As a bonus, the routines remember your Current Surface, Alignment, and FG Profile, even when you closed down and reopen the drawing.  Commands feature integrated help.

Enjoy!

Title: Re: SincPac Land/Civil Extensions
Post by: sinc on March 13, 2006, 11:54:49 AM

Wouldn't you know it, there was a little bug in the PTINV command, introduced at the last minute.  Figures.

When using an existing surface, it erroneously used the Datum Adjustment value from the other routines.

I uploaded a patched version - it's the "SincPac v1.00a" version.  Evidently, I can't delete files from the Lilly Pad...?  So the original is still there, too.

Title: Re: SincPac Land/Civil Extensions
Post by: Mark on March 13, 2006, 12:27:50 PM

Thanks for sharing, looks very useful.

Title: Re: SincPac Land/Civil Extensions
Post by: sinc on October 29, 2006, 04:39:30 PM

These routines have been updated for Land Desktop 2007 (http://ejsurveying.com/sincpac.htm).

I also made the Help available on-line, so you can see what it does without downloading it.

The code might also be instructive to prospective Lispers.  It's kind of a mess - I did it ad hoc as I was learning Lisp, and never had time to clean it up.  But it shows how to access many pieces of Land Desktop.