On 28.08.2017 07:31, Stephen wrote:
> On 28/08/2017 12:06, Thomas de Groot wrote:
>> On 28-8-2017 9:27, Stephen wrote:
>>> On 28/08/2017 07:56, Thomas de Groot wrote:
>>>> On 27-8-2017 19:23, Sven Littkowski wrote:
>>>>> Hi,
>>>>>
>>>>
>>>> I suppose these lower res meshes are posted by NASA in order to
>>>> reduce the 'weight' of the files.
>>>>
>>>
>>> I think it is the other way round. The High Res meshes are made
>>> available as a courtesy. You can't expect NASA to give it a high
>>> priority when no one in their right mind would try to build a planet
>>> in High Res. What would the memory requirements be anyway?
>>
>> I am lost now. The Nasa meshes we downloaded from NASA (like Valles
>> Marineris) are they considered hi- or lo-res? 
> 
> From what I can remember. Only a few of the Mars sites have a high Res
> mesh.
> Unless Sven is talking about another site.
> 
>> Additionally, I think that mesh landscapes always show a resolution
>> problem; so do height_fields too of course, and both when used for a
>> close, detailed, view. I don't think there really is a solution for
>> that, except using the mesh/heightfield for background or mid-range
>> view, and a separate, local, one for a detailed foreground. That is
>> what I do in those cases.
>>
> 
> The man uses mountain ranges as props. Respect. :-)
> 
> 
> 
>>> No more than two subdivisions, I would say. Can PoseRay displace
>>> faces along their normal? (I don't have it installed atm.)
>>>
>>
>> You can do displacement mapping, if that is what you mean, but that is
>> tricky. 
> 
> It is and it is.
> 
> I'd like to test but I can't.
> 
>> I don't know how good MeshLab is for these kind of manipulations, by
>> the way. Might be worth the try.
>>
> 
> 
Someone mentioned those famous HiRise graphic files that somehow can be
converted to hi-res meshes. But I don't know, how, nor do I have the
right software on my Windows system. Can anyone assist?

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