757 wx radar

[dom_vc10]

Hi

Is the weather radar in the 757 supposed to work or it's not implemented yet? Not sure if I am doing something wrong or just expecting something that doesn't exist

[V12]

FG in CANVAS has implemented basic functionality for WX radar, if 757 uses standard NAV display, it should work, in the property browser try find EFIS and boolean property WXR. Set it on TRUE and radar should work. I used this feature on my version of the Concorde. But there is large fps drop.

EDIT :
Example - FGADDON aircraft :



You need make binding this property to the some switch.

[dom_vc10]

great thanks a lot. Seems it's possible then. I need to learn a little here to implement but good it's possible.

[tikibar]

It's already implemented. This button turns it on and off.

[dom_vc10]

Ah ok. It will show in the nav display or on the bendix in the centre console? If it's in the NAV display then I will look at removing the bendinx

EDIT: I see it does turn on in the nav display. This makes the bendinx guage redundant then really. So next quest, how to remove the bendix guage.. everyday is a learning day with FG

Thanks for the answers both of you!

[V12]

That Bendix in 757 is bad joke.

[dom_vc10]

I've seen several real life images of what looks to be similiar to the bendix in that position on some older photos but yes I think it's time to remove it.. once I figure out how

[dom_vc10]

Adjusted (also adjusted the text above the buttons at the bottom the placement was too low now you can see the labels)





Need to test the radar out now I looked up an area with pretty rough weather but nothing was showing. Is there any tip on testing it please?

[V12]

Use weather scenario - menu Environment, option Weather, select Thunderstorm or Stormy Monday. FG will generate nice thunderstorm with CB clouds, strong gusty wind and rain. And ofcourse, You will see CB clouds on the WX radar.
But when You activate WXR, fps drop significantly.

[Hooray]

there's no good reason for the FPS to drop significantly, it it does, I'd say that's a clear bug in the underlying MapStructure controller files - the point being, what is being rendered are really just simple raster graphics that are placed using lat/lon tuples - thus, the original implementation was fairly simple if I remember correctly. If it's now causing fgfs to stutter, I'd first of all suggest to review the searchCmd() method of the corresponding WXR.lcontroller file.

It will have the equivalent of a foreach loop traversing a bunch of data structures/properties to determine what is to be rendered. If the model lacks a proper equals() helper, it will redraw stuff unnecessarily.

Either way, there is no good technical reason for any of this to be slow or to cause "stuttering" - other than it using a naive algorithm, because the original prototyping code never got updated (?)

[dom_vc10]

when I enable it I get no drops in FPS however I have not yet tested in the proper weather scenario so will see but so far switching it on makes no difference

[V12]

It is strange, sometime fps drop from 60 to 10, in other case no fps drop. Same situation is with traffic on ND. Terrain on ND doesn't work, there is not fps drop.

EDIT :
I captured this effect on the video :

[dom_vc10]

when I enable it I get no drops in FPS however I have not yet tested in the proper weather scenario so will see but so far switching it on makes no difference

So it drops about 7fps when a storm shows which is not huge but when I'm already hovering at 19-20 that's a bit of a hit but manageable.

[Doorknob747]

when you say 19-20 do you mean FPS or FL. If FL, then try 30 and 35.

[V12]

FPS - frames per second