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Author Topic: "Elevation_over_terrain_failed"  (Read 2973 times)

KW71

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"Elevation_over_terrain_failed"
« on: November 03, 2014, 11:01:53 pm »

Hi!!!
I was enjoying a low level flight trough a canyon:

pos_x = -337730.34,
pos_y = -6090611.4,
pos_z = 1863811.86,
rot_x = .859527,
rot_y = .02126,
rot_z = .474088,
rot_w = .189745

Suddenly I crash with nothing!

Next attempt, near the same point, same thing happens and got this message:


Elevation_over_terrain_faied

Elevation_over_terrain Invalid param (NaN)

To replicate, head into the canyon entrance at low altitud... Few seconds ahead... crash!!! (some times).

« Last Edit: November 03, 2014, 11:39:01 pm by KW71 »
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KW71

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Re: "Elevation_over_terrain_failed"
« Reply #1 on: November 03, 2014, 11:37:34 pm »

And here:

pos_x = -1391094.7,
pos_y = -4939183.2,
pos_z = 3791543.77,
rot_x = .855256,
rot_y = -.265899,
rot_z = -.404262,
rot_w = .185494


a big crack in the mesh.

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cameni

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Re: "Elevation_over_terrain_failed"
« Reply #2 on: November 04, 2014, 12:32:10 am »

I was enjoying a low level flight trough a canyon:
What you were flying with?
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KW71

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Re: "Elevation_over_terrain_failed"
« Reply #3 on: November 04, 2014, 09:28:44 am »

In the first two attempts I was on the  AH-64.


1.- It was like hitting where there is nothing (AH-64).

2.- Same like one, but I got the message. (AH-64)

3.- After it I tried the combat jet; I received no message, but it was like hitting where there is nothing, and I got a strong impulse in the upper direction. I mean really strong, like being 50 ft over the ground, and a split second after, being 500 ft above.


I swear it was just one beer, officer.  :)


NOTE:   The second post is just about the mesh crack. No flying issues.
« Last Edit: November 04, 2014, 09:48:08 am by KW71 »
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KW71

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Re: "Elevation_over_terrain_failed" and/or Push up
« Reply #4 on: November 17, 2014, 01:36:21 pm »

Any idea on this?

This occurs frequently in some locations (in this case Colorado Canyon). When I'm flying at low level, a receive a vertical impulse, which varies in intensity. When flying a plane, can push up me several tens  meters (even hundreds).

For this video (free camera) a have record three small chunks, until it happened (watch for a sudden small jump in the middle of the video):

https://www.dropbox.com/s/198gcq49662lvg5/push_up.webm?dl=0
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cameni

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Re: "Elevation_over_terrain_failed"
« Reply #5 on: November 18, 2014, 02:20:04 am »

I fixed a possibly related bug a few days ago, basically queries to elevation data could sometimes execute earlier than the elevation data are valid. I suspect there may be more erroneous cases in there.
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