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Is a triangle a three sided polygon?
(Posted 27 Mar 2013, 02:07)
http://www.fsdeveloper.com/forum/showpost.php?p=632862&postcount=21
That was my initial thought, bit it is not true. It works with polygons. (The slope parameter is not used).
Last edited by GaryGB; 26 Mar 2013 at 23:00.
http://www.fsdeveloper.com/forum/showpost.php?p=632852&postcount=19
BTW: Keep this in mind:
For sloped / tilted flattens, THE FSX RENDERING ENGINE WORKS WITH TRIANGLES... NOT RECTANGLES !
http://www.fsdeveloper.com/forum/showpost.php?p=144300&postcount=12
I'm afraid I do not have the time to explain in detail.
I have found it unnecessary to create so many triangles, I now use convex polygons with the height of each outer vertex equal to the mesh height.
http://www.fsdeveloper.com/forum/showpost.php?p=144334&postcount=14
...for custom sloped flatten "convex polygons" we are referencing in this context, Triangles... with all interior angles less than 180° such that all the vertices will point outwards, away from the interior of the shape.
http://www.mathopenref.com/polygonconvex.html)
In my case, I had a complex slope at the end of my runway. In real life:
When I defined the flatten I got a lot of glitches. After a lot of days of testing I realized that the best approach it was use the sbuilder´s QMID grid based in the mesh resolution (my scenery include a 5m mesh, so I selected Level 23)
Quad Area Area Area
Cell Point Point Point
Terrain Quad Quad Terrain
Grid LOD QMID Grid
Interval Grid Grid Interval
LOD QMID TMVL (Meters) Size Size (Meters)
-2 0 8 40,075,468.8 6 8 156,544.8
-1 1 9 20,037,734.4 7 9 78,272.4
0 2 10 10,018,867.2 8 10 39,136.2
1 3 11 5,009,433.6 9 11 19,568.1
2 4 12 2,504,716.8 10 12 9,784.0
3 5 13 1,252,358.4 11 13 4,892.0
4 6 14 626,179.2 12 14 2,446.0
5 7 15 313,089.6 13 15 1,223.0
6 8 16 156,544.8 14 16 611.5
7 9 17 78,272.4 15 17 305.8
8 10 18 39,136.2 16 18 152.9
9 11 19 19,568.1 17 19 76.4
10 12 20 9,784.0 18 20 38.2
11 13 21 4,892.0 19 21 19.1
--------------------------------------------------------------------------> FS9*
12 14 22 2,446.0 20 22 9.6
--------------------------------------------------------------------------> FS8*
13 15 23 1,223.0 21 23 4.8
14 16 24 611.5 22 24 2.4
--------------------------------------------------------------------------> FSX*
15 17 25 305.8 23 25 1.2
--------------------------------------------------------------------------> P3D*
16 18 26 152.9 24 26 0.6 =(60 cm)
17 19 27 76.4 25 27 0.3 =(30 cm)
18 20 28 38.2 26 28 0.15 =(15 cm)
19 21 29 19.1 27 29 0.075 =(7.5 cm)
20 22 30 9.6 28 30 0.0375 =(3.75 cm)
--------------------------------------------------------------------------> MSFS-2020*
21 23 31 4.8 29 31 0.01875 =(1.875 cm)
22 24 32 2.4 30 32 0.009375 =(9.375 mm)
23 25 33 1.2 31 33 0.0046875 =(4.6875 mm)
24 26 34 0.6 32 24 0.00234375=(2.34375 mm)
25 27 35 0.3 33 35 0.001171875 =(1.171875 mm)
26 28 36 0.15 34 36 0.0005859375 =(0.5859375 mm)
27 29 37 0.075 35 37 0.00029296875 =(0.29296875 mm)
Hi Kevin:
Here's a basic guide for purposes of working with the FS quad matrix terrain grid system (for ex: making sloped / tilted flattens).
GaryGB
Dude seriously, you are the #$^*$#@ bomb!
Dude seriously, you are the #$^*$#@ bomb!
Thanks; I thought the extra bit of FS9 info might help with your FS9 KTPA project !
Last but not least, how extensive and complex your sloped polygons need to be largely depends on the shape of the local terrain. In many cases it's not even necessary to have sloped polys all around the main flatten. In other cases it takes a lot of tweaking to avoid unwanted results.
I agree. The first thing I do is look at an overall view of the default setup, this is Fiesland:
[ ... ]
It is obvious that the default elevation of 50.292 metres is far to high. TcalcX gives a mean elevation of 41.8 metres.
[ ... ]
Fiesland? I' d just love to reproduce what you were doing ...
Is this the dam?