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FSXA Round world correction problem

jtanabodee

jtanabodee

Resource contributor
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thailand
Hi Arno,
I am making ZBAA airport which is huge. I am making VGDS poles with parking label sign on the top. I export those poles with the terminal building. I use Round World Correction Tool and I have seen that those poles are not in the correct place. The first photo is where it is in Gmax and the second photo is how it looks in FSX. I did a green cross for each VGDS pole in Gmax and export it as a ground poly. It seems to me that those green crosses are in the right place but the poles exported with the terminal is not correct.
The terminal has its own coordinate which is not the center of ground poly.
How I can make this?
Do I need to place each pole to the coordinate that I can get from the green crossbar?
Another problem will comes up since each pole has the number of the parking. I don't know if we can make numbers to the models without using texture like the way airplane number on the fuselage.
vgds1.jpg
vgds2.jpg
 
Hi,

If you placed them in the same gmax file why would the reference point be different?

I have a test case with ground polygons and objects that align well. But they have the same reference point. I would have to test when they are different.
 
The reference point is not the same since the airport is big. The terminal reference point is around its center which is, of course, not the center of ground poly. If I use the ground poly as the reference point, the terminal would disappear from the certain angle.
I will try to export just the poles using the same reference point as ground poly and see if it works.
 
I got it now! What using the line from ground poly needs to export at the same ref. point. I exported those VGDS's with the same ref. point of ground poly and they came out perfectly matched with the lines.
 
Glad to hear that worked. On the other hand if the two reference points are ok the calculations should also work when they are not the same. Assuming the airport is designed in the FS2004 flat earth in gmax.
 
Yes, Arno. I did it in Gmax but I used reference plane and calculated by MCX.
I usually find the center of the terminal and make a cross plane with bright color on the center of the model. Then I export the that cross as ground poly. Then I open FSX and slew to that cross so I can get the coordinate in FSX round world. I come back to Gmax and export the terminal with the center of the terminal in Gmax is 0,0 . After that I get the XML and edit it with the coordinate that I just got from FSX.

If I export the terminal with those poles, I get a wrong position (the center of those pole is the center of the terminal). But if I export those poles with the same coordinate as ground poly, they are in the right position. By the same MCX round world calculation, theoretically, they should be the same place but they are not.

I will do some experiments and I will get you the pictures later.
 
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Hi Arno,
I have checked and I found that my crossed planes were too big. Its width was about one meter. So I could miss the coordinate as much as 10-20 cm. I have changed the cross planes and export them and slew to get the coordinate. Then the problem of miss aligned went away.
Thanks for the wonderful tool.
 
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Happy to hear it's solved.
 
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