GitHub - phma/perfecttin: Converts a point cloud to a 2.5D triangulated irregular network

PerfectTIN reads a point cloud in LAS or PLY format and computes a TIN, which approximates the point cloud to within a vertical tolerance. It can then export the TIN in DXF format, LandXML format, Carlson TIN format, or text TIN format.

I wrote this to enable surveyors to certify that a surface is tested for accuracy as specified in "ASPRS Positional Accuracy Standards for Digital Geospatial Data"; the list of tolerances in the GUI is taken from that document.

The .ptin file output by PerfectTIN contains the TIN and the point cloud, and is always in meters. If the conversion is interrupted, there will be a .ptin file (usually two) with an extra number in its name. Choose the one with the smaller number, unless PerfectTIN complains that it was not finished being written. You can then resume the conversion from where it left off.

Before compiling PerfectTIN, if you want it to read PLY files, clone the plytapus repo and compile and install it. This is Simon Rajotte's code; I just made it installable.

The GUI program needs Qt5; the command-line program needs Boost.

PerfectTIN compiles on Ubuntu Eoan and Focal, DragonFly 5.5, and Windows 10. It does not compile on RHEL 7 because the CMake is too old. It does compile on Fedora 32, and probably also on RHEL 8. It may crash on Wayland.

If building on MinGW, clone the repo https://github.com/meganz/mingw-std-threads and put it beside this one.

To build the documentation, install Pandoc and TeXLive. If Pandoc or TeXLive is not installed, you'll get the program, but not the documentation.

To compile, if you're not developing the program:

Create a subdirectory build/ inside the directory where you untarred the source code.
cd build
cmake ..
make

If you are developing the program:

Create a directory build/perfecttin outside the directory where you cloned the source code.
cd build/perfecttin
cmake <directory where the source code is>
make

PLY and DXF files have no units in them. LAS files may have the unit indicated in the variable-length record, but PerfectTIN ignores it. LandXML files have units in them, but as LandXML does not support the Indian survey foot, PerfectTIN exports LandXML in meters if the unit is the Indian survey foot. You can specify the units on the command line with the -u option or in the GUI with Settings|Configure.

Name		Name	Last commit message	Last commit date
Latest commit History 1,515 Commits
cmake/Modules		cmake/Modules
doc		doc
.gitignore		.gitignore
AUTHORS.md		AUTHORS.md
CMakeLists.txt		CMakeLists.txt
CONTRIBUTING.md		CONTRIBUTING.md
COPYING		COPYING
COPYING.LESSER		COPYING.LESSER
README.md		README.md
ReleaseNotes.md		ReleaseNotes.md
TODO		TODO
adjelev.cpp		adjelev.cpp
adjelev.h		adjelev.h
angle.cpp		angle.cpp
angle.h		angle.h
arc.cpp		arc.cpp
arc.h		arc.h
bezier3d.cpp		bezier3d.cpp
bezier3d.h		bezier3d.h
binio.cpp		binio.cpp
binio.h		binio.h
boundrect.cpp		boundrect.cpp
boundrect.h		boundrect.h
brevno.cpp		brevno.cpp
brevno.h		brevno.h
carlsontin.cpp		carlsontin.cpp
carlsontin.h		carlsontin.h
ciaction.cpp		ciaction.cpp
ciaction.h		ciaction.h
cidialog.cpp		cidialog.cpp
cidialog.h		cidialog.h
cloud.cpp		cloud.cpp
cloud.h		cloud.h
cogo.cpp		cogo.cpp
cogo.h		cogo.h
cogospiral.cpp		cogospiral.cpp
cogospiral.h		cogospiral.h
color.cpp		color.cpp
color.h		color.h
config.h.in		config.h.in
configdialog.cpp		configdialog.cpp
configdialog.h		configdialog.h
contour.cpp		contour.cpp
contour.h		contour.h
csaction.cpp		csaction.cpp
csaction.h		csaction.h
csv.cpp		csv.cpp
csv.h		csv.h
dibathy.cpp		dibathy.cpp
dxf.cpp		dxf.cpp
dxf.h		dxf.h
edgeop.cpp		edgeop.cpp
edgeop.h		edgeop.h
fileio.cpp		fileio.cpp
fileio.h		fileio.h
fuzz.cpp		fuzz.cpp
gui.cpp		gui.cpp
indian-foot.png		indian-foot.png
international-foot.png		international-foot.png
landxml.cpp		landxml.cpp
landxml.h		landxml.h
las.cpp		las.cpp
las.h		las.h
ldecimal.cpp		ldecimal.cpp
ldecimal.h		ldecimal.h
leastsquares.cpp		leastsquares.cpp
leastsquares.h		leastsquares.h
lissajous.cpp		lissajous.cpp
lissajous.h		lissajous.h
lohi.cpp		lohi.cpp
lohi.h		lohi.h
mainwindow.cpp		mainwindow.cpp
mainwindow.h		mainwindow.h
manysum.cpp		manysum.cpp
manysum.h		manysum.h
matrix.cpp		matrix.cpp
matrix.h		matrix.h
meter.png		meter.png
minquad.cpp		minquad.cpp
minquad.h		minquad.h
mthreads.h		mthreads.h
neighbor.cpp		neighbor.cpp
neighbor.h		neighbor.h
octagon.cpp		octagon.cpp
octagon.h		octagon.h
perfecttin.cpp		perfecttin.cpp
perfecttin.desktop.in		perfecttin.desktop.in
perfecttin.png		perfecttin.png
perfecttin.qrc		perfecttin.qrc
perfecttin_en.ts		perfecttin_en.ts
perfecttin_es.ts		perfecttin_es.ts
ply.cpp		ply.cpp
ply.h		ply.h
point.cpp		point.cpp
point.h		point.h
pointlist.cpp		pointlist.cpp
pointlist.h		pointlist.h
polyline.cpp		polyline.cpp
polyline.h		polyline.h
ps.cpp		ps.cpp

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