FBX export crashed or going?

[Anonymous]

Hi, I have tried exporting this 5x5km city model terrain for a bit now, for example leaving the FBX export on for the night. 

It looks like this after the night: doing something but having not started the write process. CPU at 20%. I have i7-7700HQ with 6 mb L2 cache and 32Gb DDR4. 

The terrain has some black magic going on with elevations, water areas and coverages, and I am using a 0,25m - 2m generalization to have it regenerate in a reasonable time when working. 

Do you think there is an issue and I should not try and wait for some more days with the export? This is try number ten or something... Is there a problem with FBX, should I test DAE?

[Anonymous]

Hi, I have tried exporting this 5x5km city model terrain for a bit now, for example leaving the FBX export on for the night. 

It looks like this after the night: doing something but having not started the write process. CPU at 20%. I have i7-7700HQ with 6 mb L2 cache and 32Gb DDR4. 

The terrain has some black magic going on with elevations, water areas and coverages, and I am using a 0,25m - 2m generalization to have it regenerate in a reasonable time when working. 

Do you think there is an issue and I should not try and wait for some more days with the export? This is try number ten or something... Is there a problem with FBX, should I test DAE?

[Karsten.Saenger · Accepted solution]

Hi @Anonymous ,

what's your goal to export a terrain of that size as FBX file?
A 25cm ground resolution will result in a 400.000.000 quads = 800.000.000 triangles file...if I am not wrong.
That sounds like a very large FBX file, don't know if that even works.

Regards,

Karsten.

[Karsten.Saenger · Accepted solution]

Hi @Anonymous ,

what's your goal to export a terrain of that size as FBX file?
A 25cm ground resolution will result in a 400.000.000 quads = 800.000.000 triangles file...if I am not wrong.
That sounds like a very large FBX file, don't know if that even works.

Regards,

Karsten.

[Anonymous]

Hi, it's an urban design terrain for a plan for 100 000 people and stuff.
The overall study area is approx 15x15km. FBX is going to 3dsmax for
visuals. I'm doing these with Infraworks and Cityengine, with IW as a
terrain massing software.

I did get it to export a 400 megabytes FBX using a bit heavier
generalization, replacing Openstreetmap rivers with coverage areas through
exporting them to IMX and back, and exporting overnight. The geometry is
mildly broken, but not disturbingly so given the scale of aerial renders.

So I think this was solved:
1) Need a better CPU with more and steadier cache memory for this stuff.
2) Need to use heavy handed generalization, 0,5m did the trick.
3) Need to get rid of model builder river geometry and bring them back as
coverages so that water areas and coverages don't mix (I use both to force
height geometry with smoothing radius).

What would help from Infraworks:
- Exporting terrain simplification from model builder options (as far as I
have tested, it doesn't export it to FBX?)

[Anonymous]

Hi, it's an urban design terrain for a plan for 100 000 people and stuff.
The overall study area is approx 15x15km. FBX is going to 3dsmax for
visuals. I'm doing these with Infraworks and Cityengine, with IW as a
terrain massing software.

I did get it to export a 400 megabytes FBX using a bit heavier
generalization, replacing Openstreetmap rivers with coverage areas through
exporting them to IMX and back, and exporting overnight. The geometry is
mildly broken, but not disturbingly so given the scale of aerial renders.

So I think this was solved:
1) Need a better CPU with more and steadier cache memory for this stuff.
2) Need to use heavy handed generalization, 0,5m did the trick.
3) Need to get rid of model builder river geometry and bring them back as
coverages so that water areas and coverages don't mix (I use both to force
height geometry with smoothing radius).

What would help from Infraworks:
- Exporting terrain simplification from model builder options (as far as I
have tested, it doesn't export it to FBX?)