Cone trace doesn't show any if double-up

[lewisjb]

I found that if I have two cones at the same location, then no cones show up, and no error appears.

This also happens if they are just in close proximity, like 0.01 off

Reproducible example: https://codepen.io/anon/pen/KOVwYd?editors=0010

[etpinard]

Thanks for reporting!

That's probably our auto-size algorithm that's blowing up here.

Trace coordinates like you have in https://codepen.io/anon/pen/KOVwYd?editors=0010, would be a good candidate for an absolute sizing mode as requested in #3613

[etpinard]

Assigning @archmoj

[archmoj]

@lewisjb would you mind testing this codepen and with other input data?
Thanks!

[archmoj]

@etpinard FYI - here is my patch gl-vis/gl-cone3d@3c7188f,
if that looks OK I can move forward and make a PR.

[etpinard]

Yeah, that looks ok to me. Does it cause any changes to the cone baselines?

[archmoj]

No change. The image test passed.

[etpinard]

Ok PR away 🚀