On Friday, 14 February 2020 06.18.23 EST Jody Garnett wrote: > Thanks for reaching out Pierre: > > Perhaps you could spend a moment introducing the projects and describe what > they are used for?
Bezitopo is a CAD package under development specifically designed for land surveying. It does not aim at compatibility with general-purpose CAD packages, so it does not have, for example, ellipses, but does have Euler spirals, which are used in highway design (and which Bezitopo uses to smooth contours). It consists of several programs: bezitest, a test program; bezitopo, a command-line program, which I use for checking closure and converting PNEZD to/from PENZD; clotilde, which computes approximations to spirals; convertgeoid, which converts and excerpts geoid files; pangeoid, which will be a GUI version of convertgeoid but yet does nothing; sitecheck, which reads a TIN and would let you walk around it with a GPS system, if it had a way of interfacing to one; transmer, which computes transverse Mercator coefficients; viewtin, which will become the CAD program (to be renamed bezitopo or bezitopo-gui). PerfectTIN, which I started a year ago by copying large hunks of Bezitopo code, reads a point cloud representing terrain and computes a TIN which approximates the point cloud to within a specified tolerance. You can then read the TIN into SiteCheck and compute the elevation at any XY coordinate in the TIN. A friend of mine, who sells surveying equipment, has a possible customer for the program. Since I posted two weeks ago, I got the quarter function working and have almost eliminated the spikes that PerfectTIN was producing. Pierre -- ve ka'a ro klaji la .romas. se jmaji _______________________________________________ Discuss mailing list Discuss@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/discuss