Strange geometry after importing from Blender

[karabasa369]

Hi people, so my Blender headaches are continuing. This time after adapting a few models in Blender for RF all of which originate from a different CAD software (Catia in my case) I am faced with this strange occurrence. So I am getting this strange face that covers the space where the ailerons go on the wings although this face is non existant in Blender as you can see in the pictures I am providing. In RF's editor the ailerons are deflected upwards, it is kinda hard to see but there is that strange twisted geometry that covers the aileron. It is also present in some other places inside of the wing but as you can see in the picture from Blender those faces are not there and I have no idea how they appear in RF. I have tried messing with the whole wing like fixing the geometry, moving the points where those faces seem to start in Rf but nothing makes them gone. Does anyone have an idea what and why they are there?

 

[legoman]

Realflight uses triangles and is trying to resolve a face with more than three edges around it, and it is failing at it. So try connecting some of the vertexes in blender or the triangulate modifier.

 

[legoman]

picture for my previous post

 

[karabasa369]

As you said the last time simple things will cause the biggest headaches. Thank you again Mr. legoman, you are indeed the master of this forum.

This has solved the issue although now I am getting some reflections around the ailerons, any indeas what they are? I tried messing with the normals, they are all facing the correct direction, I tried making them flat and I also tried changing the mesh shadow settings but they are still there.

 

[legoman]

As you said the last time simple things will cause the biggest headaches. Thank you again Mr. legoman, you are indeed the master of this forum.

This has solved the issue although now I am getting some reflections around the ailerons, any indeas what they are? I tried messing with the normals, they are all facing the correct direction, I tried making them flat and I also tried changing the mesh shadow settings but they are still there.

i think it is smoothing. Usually use a grey primer so the color might be tricking me and it might be a material setting as rf is 20 ish years old and some of the modern ways of defineing texture confuse rf.

smoothing.
RF requires edges that are hard edges to be marked as sharp and or edge split. With out this rf can not tell the difference between a edge on a smooth ball and a edge on the the trailing edge of a wing. rf is trying to average the amount shadow across the faces and for a smooth ball where the difference is a few degrees it is 99.999% of the time fine. but on a trailing edge where the angle can be 170 degrees or more rf gets confused.

what I use for edge split

Edge Split Modifier - Blender 4.4 Manual

docs.blender.org

texture settings
my second guess would be a very high specular. or one of the other one is raise. rf uses diffuse, specular and normal for textures. so metalis roughness and the other can confuse RF.

6.5 Art Tutorial - Lighting Procedures

One of our artists has provided the following write-up about creating art for the new 6.5 lighting system. In RealFlight 6.5 we've completely reworked the lighting engine, and we've noticed that some of you are having a little trouble getting your art to look right, so here's a tutorial to...

forums.realflight.com

 

[karabasa369]

Okay, I just had time to test this out. Looks like edge split did the thing. Is looks perfect now, thank you very much!

 

[abwalsh99]

Hi Legoman -- I had the same problem and was able to fix it using the edge split modifier as you suggested. Thanks for that! I was looking back at the content creation posts here: but none of the links in that post seem to work -- I get a "file not found" message. What I was searching for there was techniques for canopy modeling in Blender -- actually 3DS max videos or instructions might help as well. I have been able to create canopies but not repeatably. Sometimes they are transparent in RF, sometimes not. I'm probably making a mess of material properties, UV mapping and image textures.

 

[legoman]

Hi Legoman -- I had the same problem and was able to fix it using the edge split modifier as you suggested. Thanks for that! I was looking back at the content creation posts here: but none of the links in that post seem to work -- I get a "file not found" message. What I was searching for there was techniques for canopy modeling in Blender -- actually 3DS max videos or instructions might help as well. I have been able to create canopies but not repeatably. Sometimes they are transparent in RF, sometimes not. I'm probably making a mess of material properties, UV mapping and image textures.

the files in that post are on (or were on) someones google drive. and they are either privated or deleted.

for the canopies transparencies. see the alpha for that material. if you are using a tga for color and/or opacity for the canopy you need to use the ~ALPHA prefix on the material name