[GRASS-user] Importing DEM into 3D Studio MAX

GRASS GRASS user
1

Hello,

I have a DEM and a satellite image in GRASS of an island that I'd need
to create a 3D model for. Does anyone know how to get this data in 3DS?
I can use r.out.pov to create a tga file that POV-Ray is happy with, but
that doesn't create a 3D model... I've tried looking at blender, but I'm
not able to see any formats that seem to match directly.

Any ideas?

--Wolf

--

<:3 )---- Wolf Bergenheim ----( 8:>

2

Not sure about the image, but you could export
the DEM points or mesh as VTK, then use paraview to
export them to PLY.
Maybe 3DS can read that. If not, take a look at MeshLab
which will read PLY and offer more export formats.

Ben

Btw., a v.out.ply for GRASS would be great :wink:

Wolf Bergenheim wrote:

Hello,

I have a DEM and a satellite image in GRASS of an island that I'd need
to create a 3D model for. Does anyone know how to get this data in 3DS?
I can use r.out.pov to create a tga file that POV-Ray is happy with, but
that doesn't create a 3D model... I've tried looking at blender, but I'm
not able to see any formats that seem to match directly.

Any ideas?

--Wolf

--
Benjamin Ducke
Senior Applications Support and Development Officer

Oxford Archaeology Ltd
Janus House
Osney Mead
OX2 0ES
Oxford, U.K.

Tel: +44 (0)1865 263 800 (switchboard)
Tel: +44 (0)1865 980 758 (direct)
Fax :+44 (0)1865 793 496
benjamin.ducke@oxfordarch.co.uk

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3

Hi Wolf,

I have a DEM and a satellite image in GRASS of an island that I'd need
to create a 3D model for. Does anyone know how to get this data in 3DS?
I can use r.out.pov to create a tga file that POV-Ray is happy with, but
that doesn't create a 3D model... I've tried looking at blender, but I'm
not able to see any formats that seem to match directly.

Any ideas?

did you try to use r.out.vrml? it should be read as 3D model from 3DS.

Marco

4

Hi Marco,

On 21.08.2008 14:53, Marco Pasetti wrote:

did you try to use r.out.vrml? it should be read as 3D model from 3DS.

I did, but the 3d guy tells me it doesn't work. Now I've created a contour map out of the DEM, and I'm exporting it to a shapefile which should also work. But I'll try to get the 3d guy to test the vrml to work again.

--Wolf

--

<:3 )---- Wolf Bergenheim ----( 8:>

5

Another idea is to export the DEM in grey scale, many 3D packages have an
option to create terrain from greyscale 8-bit images, very handy if you
ask me.

Cheers,
Francesco
CIRGEO - University of Padova
ph. +39 349 5539261

Hi Wolf,

I have a DEM and a satellite image in GRASS of an island that I'd need
to create a 3D model for. Does anyone know how to get this data in 3DS?
I can use r.out.pov to create a tga file that POV-Ray is happy with, but
that doesn't create a 3D model... I've tried looking at blender, but I'm
not able to see any formats that seem to match directly.

Any ideas?

did you try to use r.out.vrml? it should be read as 3D model from 3DS.

Marco
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6

Hi Francesco,

Another idea is to export the DEM in grey scale, many 3D packages have an
option to create terrain from greyscale 8-bit images, very handy if you
ask me.

interesting. Do you know how could I import a raster DEM as 3D terrain model into ArchiCAD?
ArchiCAD doesn't recognize VRML and I don't have 3DS (recognized format by AC) to convert VRML to 3DSMax
I also tried importing a shp contour vector layer (derived from the raster DEM), but it seems that AC don't "read" the z values (the layer is imported as simple plain curves)

any ideas?

Marco

7

well imho most simple method would be export dem in gray (any graphical format) and use it as displacement map in 3dMAX or use it as the map in displacement modifier. I used this method years ago to presend 3d relief. It gave me very interesting result. :wink:
Second method is to change grid into 3dpoints, export it to vrml import vrml to 3dMAX (I don't know now if 3dMAX handle vrml natively) and convert points to mesh. But result cut be... any
Jarek

Wolf Bergenheim pisze:

Hello,

I have a DEM and a satellite image in GRASS of an island that I'd need
to create a 3D model for. Does anyone know how to get this data in 3DS?
I can use r.out.pov to create a tga file that POV-Ray is happy with, but
that doesn't create a 3D model... I've tried looking at blender, but I'm
not able to see any formats that seem to match directly.

Any ideas?

--Wolf