PerfectTIN

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PerfectTIN Version	Tarball	Sig	Plytapus Version	Comments
0.1.1	tar	sig	—	Multithreading CLI
0.2.0	tar	sig	—	First GUI
0.2.1	tar	sig	—	Runs in Windows, compiled with MinGW
0.2.2	tar	sig	—	Compiles with MSVC
0.3.0	tar	sig	—	Resumes from checkpoint file
0.3.4	tar	sig	—	Omits empty triangles when exporting
0.3.5	tar	sig	—	Triangles are less acicular
0.3.6	tar	sig	0.6.0	LandXML export bugfix
0.4.0	tar	sig	0.6.0	Remove spikes
0.4.1	tar	sig	0.6.0	Exports TIN as PLY
0.5.0	tar	sig	0.6.0	Conversion is much faster
0.5.1	tar	sig	0.6.0	PLY export is now colored and shows empty areas; STL export

Plytapus Version	Tarball	Sig	Comments
0.6.0	tar	sig	First version named Plytapus

Upcoming Features

PerfectTIN 1.0.0 will draw contours and export them in DXF format.
1.0.0 reads point clouds in XYZ format.
1.0.0 has a new program dibathy, which takes a point cloud with upper and lower layers, having the same xy coordinates, and separates them. This is used for dual-frequency scans of lakes and rivers.

PerfectTIN 0.5.1 sometimes produces a flat TIN at elevation 0 if given a point cloud that is entirely below sea level. This is fixed in 1.0.0.
0.5.1 has a checksum that does not meet the spec; checksums 13, 26, 39, and 52 (but not 0) are miscalculated if the corresponding bit in the total number of dots is 1. This is fixed in 1.0.0, which calls correct the erroneous checksum written by 0.5.1.
0.5.1 can produce a .ptin file whose checksum does not verify when a point cloud has outliers, such as a single point 1 km below all the rest. 1.0.0 will pop up a warning when this happens.

Pierre Abbat
NC PLS L-5129
Public key