Camera can move inside 3D terrain

[mattgrid]

This is a follow-on ticket from #1241. It's possible to move the camera to within terrain when it's extruded from the 2D map surface.

@zdila said:

May be a different issue, but in my case not only closest tiles but all. Open https://labs.maptiler.com/samples/maplibre/terrain/#style=satellite&lat=48.57344071&lng=20.46078220&zoom=17.16&bearing=-127.95&pitch=76.00&3d=true then zoom a little bit and tiles starts to disappear. If you refresh the page, nothing is shown until you zoom out. MapLibre 2.3.0.

@prozessor13 replied:

Walking with the camera into terrain is still an open issue :/

Expected behaviour

When the camera "bumps up" against 3D terrain, it should not be possible to move the camera to within the 3D surface.

Actual behaviour

When you move the camera towards 3D terrain, nothing stops you when you "hit" the surface. You can keep moving through the surface.

[prozessor13]

I think i will not have time to look onto this in near future. Also I think before start implementing this, all possible scenarios should be played through. What should happen if, for example:

• map pitch changed with mouse-interaction, and camera collide with terrain.
  • may changing pitch should stop?
  • or should camera go up?
• map bearing changed with mouse-interaction, and camera collide with terrain.
  • I think camera should go up?
  • should it also rotate downwards do look onto the same center?
• flyTo/easeTo collide with terrain
• ...

[767160]

My company would be happy to hire someone to fix this issue

[wipfli]

@767160 thanks for sharing. You can ping me on slack and I can maybe put you in touch with people who are interested... https://osmus-slack.herokuapp.com/

[767160]

@wipfli Sorry, I do not use slack. Anyone interested, please send me an email at 061767@protonmail.com

[HarelM]

Assigned L bounty.
Link to parent Bounty: maplibre/maplibre#189
If you would like to work on this and you think the bounty is not enough please ping me or contact @767160

[prozessor13]

I already have a basic working prototype for this, may in near future i find the time to create a PR.

[SnailBones]

I'd be interested in working on this if you're open to passing the baton @prozessor13.