meshing should have a --max-faces parameter

[cleeus]

Renderers are facing practical limitations for the number of triangles they can render per scene. Instead of tuning the --max-error parameter until that limit is met, we should add a --max-faces parameter that guarantees a maximum number of faces per tile/dem.

Both terra and zemlya can trivially be extended to stop increasing the number of faces when a certain number is reached.

[walkingpendulum]

is there any chance to make this feature happens?

[walkingpendulum]

hey everyone! we implemented similar feature for dem2tin subcommand for our inner purposes and now we'd like to share code with community. kindly asking for feedback here.
thank you in advance

[yesitsme007]

Sounds like a useful feature, would be great to have this. In my use case I would like to model an area from a "central" point and then have decreasing resolution proportional to the distance. E.g. you are on the summit of a mountain and want to model the view. You would like to have many faces in the closer areas and only a few in far away zones. Any thoughts? Is this a very special use case or of more general use? I could think of some kind of -gradient flag.

[walkingpendulum]

PR with or implementation: #66