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single quantized mesh from tiff #65

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frapit opened this issue Nov 20, 2019 · 2 comments · May be fixed by #67
Closed

single quantized mesh from tiff #65

frapit opened this issue Nov 20, 2019 · 2 comments · May be fixed by #67

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@frapit
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frapit commented Nov 20, 2019

Is it possible to use dem2tin to create a single quantized mesh file using a tiff input?

Whenever I run dem2tin with the option --output-format terrain it fails:

./tin-terrain dem2tin --input baty.tif --output bathy.terrain
  --input-format tiff --output-format terrain --method terra
subcommand_dem2tin
Opening raster file baty.tif with GDAL...
reading raster data...
done
performing terra meshing...
starting greedy insertion with raster width: 1386, height: 1421
initialize the mesh with four corner points
finished greedy insertion
done
time for meshing step: 0.365798 sec = 0.00609663 minutes
number of triangles: 41894
number of vertices: 20950
writing mesh... (bathy.terrain)
ERROR QuantizedMeshIO.cpp:327 Mesh has to be triangulated in order to be written as QM
ERROR cmd.cpp:453 error writing output file

When I choose to output an .obj file instead it works fine and if I manually inspect the resulting mesh it looks perfectly triangulated. The error message is confusing since the meshing process seem to work. I tried all methods and multiple inputs including the example files from your readme. I also ran gdalwarp to transform my data into the correct projection.

dem2tintiles is producing valid quantized meshes on the same .tiff files.

Any help would be appreciated!
@jtfell jtfell mentioned this issue Jan 16, 2020
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@frapit
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frapit commented Jan 16, 2020

Yep, this resolves the issue, thanks!

@frapit frapit closed this as completed Jan 16, 2020
@alexbeeston
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I'm still getting the same problem after using the forked version, even with the sample crater lake data set. Any ideas about how it might be resolved? Output is:

subcommand_dem2tin
Opening raster file craterLakeEPSG3857.dem with GDAL...
reading raster data...
done
performing terra meshing...
starting greedy insertion with raster width: 4713, height: 4196
initialize the mesh with four corner points
finished greedy insertion
done
time for meshing step: 7.31981 sec = 0.121997 minutes
number of triangles: 305280
number of vertices: 152643
writing mesh... (tin-terrain-output/tin/craterLakeEPSG3857_forked.terrain)
ERROR QuantizedMeshIO.cpp:327 Mesh has to be triangulated in order to be written as QM
ERROR cmd.cpp:453 error writing output file

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Default to triangle mesh mode when generating a single .terrain file
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@frapit @alexbeeston