[FSDS] My plane doesn't touch the floor

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[FSDS] My plane doesn't touch the floor

Postby tomy » Tue Aug 30, 2005 8:40 am

hi everyone,

i juste export an aircrfat form FS Design Studio to FS 2002.

My plane is 3 meters above the road !

so i try to make ( as it said in the official tutorial) some refered part

but nothing changes !

Please help me !

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Re: [FSDS] My plane doesn't touch the floor

Postby Felix/FFDS » Tue Aug 30, 2005 9:28 am

To get a better idea - please post a screens shot showing your reference parts positions relative to the model -

Remember, when compiling the model, you HAVE to click on "process reference parts" so that the reference part parameters in your gear.center, gear.left, gear.right reference parts are interpreted and passed on to the aircraft.cfg file.
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Re: [FSDS] My plane doesn't touch the floor

Postby Berserk » Tue Aug 30, 2005 12:57 pm

Do you check the [contact_points] in the aircraft .cfg??? ?
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Re: [FSDS] My plane doesn't touch the floor

Postby Katahu » Tue Aug 30, 2005 4:31 pm

I don't use FSDS, I use Gmax. So my idea is just a guess.

When you group the objects for exporting [interior and exterior - and if you do group], try raising or lowering the pivot point of the grouped interior or exterior. I learned this trick when I made the Ferrari.

The closer the pivot point is towards the bottom of either grouped model, the higher the visual model will be in FS. But the model will appear high in the Aircraft Preview screen.

The opposite occurs if you move the pivot point towards the top of either model.

For some odd reason, FS only reads from the location of the pivot point of a grouped model rather than reading off the origin in the grid in Gmax.
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Re: [FSDS] My plane doesn't touch the floor

Postby tomy » Wed Aug 31, 2005 2:54 am

ok this is my aircraft.cfg :

[contact_points]
point.0 = 1,  0.48,  0.00, -3.70, 1000, 0, 0.5, 22.0, 0.3, 2.5, 0.7, 0.0, 0.0, 0
point.1 = 1, -5.02, -4.50, -3.53, 1800, 1, 0.5,  0.0, 0.3, 2.5, 0.7, 0.0, 0.0, 2
point.2 = 1, -5.02,  4.50, -3.53, 1800, 1, 0.5,  0.0, 0.3, 2.5, 0.7, 0.0, 0.0, 2
point.3 = 2,  -3.60, -17.9,  2.08, 1574.8, 0, 0.000,  0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 5, 0.0, 0.0
point.4 = 2,  -3.60,  17.9,  2.08, 1574.8, 0, 0.000,  0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 6, 0.0, 0.0
point.5 = 2, -19.93,   0.0,  0.83, 1574.8, 0, 0.000,  0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 9, 0.0, 0.0
point.6 = 2,   1.40,   0.0, -1.33, 1574.8, 0, 0.000,  0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 4, 0.0, 0.0
point.7 = 2, -19.93,   0.0,  6.83, 1574.8, 0, 0.000,  0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 7, 0.0, 0.0
point.8 = 2,  -4.60,   0.0, -1.33, 1574.8, 0, 0.000,  0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 8, 0.0, 0.0
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Re: [FSDS] My plane doesn't touch the floor

Postby Hagar » Wed Aug 31, 2005 6:34 am

Tomy. Listen to Felix. In FSDS first create your reference parts & make sure they're named correctly - gear.center, gear.left, gear.right.
Tag them as Reference Parts (not generated) from Part Properties & position them carefully. Then "when compiling the model, you HAVE to click on "process reference parts" so that the reference part parameters in your gear.center, gear.left, gear.right reference parts are interpreted and passed on to the aircraft.cfg file".

If you do all this the model should be automatically exported in approximately the correct position relative to the runway. You might have to manually tweak the [contact_points] section in Aircraft.cfg to get it just right. These are the gear height parameters in your example. (Negative values are in Feet below the reference point of the complete model.)

[contact_points]
point.0 = 1,
Last edited by Hagar on Wed Aug 31, 2005 6:37 am, edited 1 time in total.
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Re: [FSDS] My plane doesn't touch the floor

Postby Firestriker » Wed Aug 31, 2005 7:12 am

Contact points are irrelevant untill you establish a proper COG. If you want the model to display well, its extents should be centered at the origin when at rest on the ground. This is frame 150 of the gear animation as stated in the SDK. Then the reference datum is calculated at 1/4 of the cord behind the wings longitudinal apex and vertically with the waterline or the engines virtual crankshaft. All subsequent measurements are taken from this reference datum.

Don't forget, the fuel tank locations also affect how the aircraft sets in the sim and misplaced scrape points can cause crashes right off the bat.

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Re: [FSDS] My plane doesn't touch the floor

Postby MitchellDesigns » Thu Sep 01, 2005 7:52 pm

Seeing as how the contacts are so sensitive the easyest way i have found to fix this problem is to move the entire model down until its right. ;) good juck

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Re: [FSDS] My plane doesn't touch the floor

Postby Katahu » Thu Sep 01, 2005 10:18 pm

Actually, moving the model in FSDS as a whole might not affect it at all. When exporting, in gmax for example, the makemdl reads off the position of the pivot point within the Interior and Exterior models. Read my last post on the top.

Put my knowledge is based only on Gmax. I don't know if that's also true in FSDS.
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