XML extrusion bridge

[arno]

Hi all,

I have been experimenting a bit with XML extrusion bridges. One item I am missing for making viaducts is to have a grass slope on the bridge. Here in the Netherlands most bridges will have a grassy slope while the road is climbing. Does anybody know if such a type is available in FSX?

[scott967]

Arno --

do you mean the bridge is an overpass?





scott s.
.

[ollyau]

Not to derail the thread, but I've never seen an extrusion bridge used like that before- quite creative!

[arno]

Hi Scott,

Yes, can be an overpass like that. But even if it is just a bridge over water, it will in many times have a grass slope in real life. For example this image:



As you can see at both ends there is grass. In FSX the extrusion bridges don't have this at all. I guess in the perfect world your terrain mesh would include these elements, but that is not always the case of course.

[arno]

Hi,

I did some trials with SBuilderX using a sloped flatten and a XML bridge. This comes quite close to what I was looking for.

[scott967]

My general recipe is like this:

1 Measure alt at bridge crossing, and at ends of desired embankment.
2 Add 4.9m to crossing height for overpass elevation
3 Create 2 rectangular (or trapezoid as desired) flattens on each side for the embankment. The outer flatten is sloped from the "end" elevation to the "crossing + 4.9" elevation., then the inner flatten is level at "crossing + 4.9" elevation.
4 Create extrusion bridge with endpoints on the two (one on each end) "flat" flattens. For two-land bridge I use Width 16 and Altitude 1.75.
5 In my ini I use ExtraExtrusionAltitude=-10M

Results I guess are sensitive to FSX mesh settings, though I haven't tested in detail.

scott s.
.

[arno]

Hi Scott,

I did alter the elevation detail slider and even when it turned it down quite a bit it still looked OK. So I think the mesh setting does not influence it too much.

[ge0fy5]

hi, i read some topic to try to create a extrusion bridge. But i don't understand how you do. My projet is to make a bridge ( he dosn't exist in reality) and a use a a bridge in bridge library in fsx, and than you can go land or drive on it.

i make my scenery on ADE


answer me quickly,

sorry for my bad englais, is not my prymairy language

[arno]

Hi,

I did not use ADE, so I don't know if it supports extrusion bridges. I used SBuilderX to make the bridge. Then it is just a matter of clicking the path of the bridge and selecting the right type.

[ge0fy5]

oki i going to use your program, but i don't understand how do you do the extrution, bridge ton road ou land on them

[ge0fy5]

SBuilderX doesn't work on my computer i don't understand why!!

[ge0fy5]

this work, so i going to try a litle bit

[ge0fy5]

so tried to code a xml code to a extrusion bridge, but i don't how if is good and how to compile them.

here is the code :

<?xml version="1.0" encoding="ISO-8859-1"?>
<FSData
   version="9.0"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:noNamespaceSchemaLocation="bglcomp.xsd">

<ExtrusionBridge
   instanceId="{79b64a78-ceb3-41e1-820a-01a749b47503}"
   probability="0.14"
   suppressPlatform="TRUE"
   imageComplexity="Very_Sparse"
   roadWidth="12.0"
   extrusionProfile="{8aaabdf2-4496-483a-8df1-86ea13aa950d}"
   materialSet="{7ed5603a-d17a-4246-bc3d-baadea6909fa}"
   <AltitudeSampleLocationList>
      <AltitudeSampleLocation  lat="NN44 49.49" lon="E0 2.909"/>
      <AltitudeSampleLocation  lat="N44 49.426" lon="E0 2.908"/>
   </AltitudeSampleLocationList>
   <PolylinePointList>
      <PolylinePoint latitude="N44 49.547"   longitude="E0 2.903"     altitude="0.00"/>
      <PolylinePoint latitude="N44 49.49"    longitude="E0 2.909"   altitude="1.00"/>
      <PolylinePoint latitude="N44 49.47"    longitude="E0   2.91"    altitude="2.50"/>
      <PolylinePoint latitude="N44 49.426"   longitude="E0 2.908"     altitude="1.00"/>
      <PolylinePoint latitude="N44 49.376"   longitude="E0 2.908"     altitude="0.00"/>
   </PolylinePointList>
   <PolylineObjectPlacementList>
      <PolylineObjectPlacement id="{b2cbfca5-88f0-451a-b089-b1f551d13cc2}"/>
   </PolylineObjectPlacementList>
</ExtrusionBridge>

</FSData>

thank you for answer me quickly and help me

[arno]

Hi,

Two small mistakes in the code, here is a corrected version:

This version compiles fine. You need to have BGLComp to compile it.

[ge0fy5]

ok thank Armo, but can you explain me, what is my mistake, i'm sorry i'm curious, but i went to understand my mistake

[ge0fy5]

The bridge is here but i have some irregularity.



but i have a another problem. i doesn't have a platform to drive on hit on land on it so why?? i went it.

[Golf-HotelDelta]

You are not on the bridge, you are about 20 metres to the right.

[mmann]

Your two errors were as follows:

Your line: imageComplexity="Very_Sparse"
Correct line: imageComplexity="VERY_SPARSE"

Your line: materialSet="{7ed5603a-d17a-4246-bc3d-baadea6909fa}"
Correct line: materialSet="{7ed5603a-d17a-4246-bc3d-baadea6909fa}" >

[ge0fy5]

ok, yeah, on the photo, i'm not on the bridge, but went i tested, i go on the bridge and i fall on the water.

[Golf-HotelDelta]

You are correct, only road traffic will drive over extrusion bridges.