[QGIS-Developer] QGIS 3D: looking below the terrain model

Vincent Picavet (ml) vincent.ml at oslandia.com
Fri Dec 15 02:57:57 PST 2017


On 14/12/2017 08:02, Andreas Neumann wrote:
> Hi Nyall,
> nice that we agree on both ;-)
> I will start collecting a wish-list on 3D and we can do a crowd funding
> to address selected issues. Or we could do another QGIS grant on 3D
> improvements.

I would rather spend QGIS.ORG money on important bugfixing for QGIS 3.
QGIS Grant applications should be directed to the work nobody wants to
fund initially, or for proof-of-concept or kickstart of new features.

I have no doubt we will find people and organizations willing to fund
features for 3D improvement.



> Andreas
> On 2017-12-13 23:06, Nyall Dawson wrote:
>> On 14 December 2017 at 00:31, Andreas Neumann <a.neumann at carto.net
>> <mailto:a.neumann at carto.net>> wrote:
>>> However, one issue I have is that the terrain rendering disappears when I
>>> look below the terrain model surface - which isn't so nice for a caver or
>>> geologist. Is this also an issue about culling? Would it be possible to
>>> enable the rendering of the backside of the terrain surface?
>> I agree that this is desirable. Geotechs will also very quickly be
>> demanding this feature in order to visualise boreholes correctly!
>>> The other issue I have is that tilting is somehow locked at the
>>> horizon. I
>>> can look down on the terrain and then rotate the whole model until I look
>>> sideway into the model, but than the rotation is blocked. I cannot rotate
>>> any further so that my camera gets below the surface and that I could
>>> move
>>> below the surface and look up towards the terrain. I guess this makes
>>> a lot
>>> of sense for people who do not need to explore things below the terrain
>>> surface, but for geologists or cavers, it would be great if this
>>> rotation/tilting blocking could be disabled somehow.
>> I'd suggest this should be an option in the 3d view configuration. I
>> agree it's a valid use case, but for most users it may be unwanted.
>> Nyall
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