Fade nametags towards screen border

[BaerMitUmlaut]

When merged this pull request will:

• Make nametags fade depending on distance to the screens center

PS: This component needs some cleanup.

[jonpas]

This should be an option.

[nicolasbadano]

Three comments:
1 - I like it; in fact I remember programming this in the past; probably for AGM. It somehow got lost along the way,

2 - IMO it should be optional, as @jonpas said

3 - I'd like to see the compared perf of this, e.g. when 20 units are in sight. I took quite a bit of effort optimizing that loop on the last cleanup and it made quite a difference; that code can be called well over 1000 times per second when a lot of units are nearby.

[jokoho48]

why continue the render process? this is wased time. if the Nametag is not on screen.

[PabstMirror]

@esteldunedain - I guess I'm the one who removed the old fading. 😭 I don't think it was intentional because I left the unused _projDist var.
ebeba23#diff-8f5258d40c7670f6b1e6ae7f2f2ccbabL100

Old way did this to do edge fading.

 _projDist = _relPos vectorDistance (_vecy vectorMultiply (_relPos vectorDotProduct _vecy));
_alpha = ((1 - 0.2 * (_distance - _maxDistance)) min (1 - 0.15 * (_projDist * 5 - _distance - 3)) min 1) * GVAR(PlayerNamesMaxAlpha);

Not sure if that's any better than new?

[jonpas]

Haha, in that case I'd still prefer a setting and make fading default.

[BaerMitUmlaut]

Performance test with 20 AI:

Before:

After:

Now optional, I ordered it in between just show and show on cursor in the module, but to keep backwards compat I couldn't do that in the ACE settings.

[thojkooi]

lgtm

[nicolasbadano]

👍 Nice job @BaerMitUmlaut