When working with large worlds (Kilometer Scale) default hard coded anchor and lane sizes don't work well

[arjo129]

Feature request

Description

When we try to edit worlds that are in the kilometer scale the default settings for users don't work very well. This is because lane sizes and anchor sizes are way too small.

One possible solution is to have some form of preference where we can go in and set the default lane sizes.

We would need to do this for:

• Lanes Adds a setting for default lane size #135
• Measurements
• Fiducials
• Cursor gizmos

I've probably missed out a bunch of stuff but we can add them as we see fit.

[arjo129]

Alternatively @mxgrey suggested the use of bevy_polyline crate which negates the need for this feature.

[luca-della-vedova]

A WIP is available in the luca/polyline_lanes branch.

The color will be changed in the final version. The largest blocker right now is picking behavior with polylines, it seems bevy_mod_picking does not play well with polylines so while the display at large scales is good it is almost impossible to select the lanes.
Will dig further.

[arjo129]

Current status for selection is in the branch main...arjo/feat/offscreen_rendering . Working on refactoring it out into abevy_mod_picking backend and then upgrading the bevy version ☠️