[Plugin] Import OBJ with Materials v2.1 20131118

TIG · 15 Oct 2010, 09:29

Kristoff

I got the 'Ford' OBJ file by PM.
It imported fine for me... IF I set the units to 'meters' - it also then comes in at the correct 'size'!
If you use 'mm' it is tries to make some edges that are 1000 times too small 0 as you might have seen in other threads that guarantees that geometry fails to be made. SUp / OpenGL doesn't like anything smaller than about 0.1mm...
The importer reads the OBJ file's 'header' and if it has 'units=' in it then that is given as the default displayed in the dialog as it starts, otherwise it defaults to 'inches'.
In the case of this 'Ford' OBJ there's no header info at all, so you need to take a guess - trying larger scale units should always make geometry as the 0.1mm is never likely but of course the imported object might then be the wrong 'size'.
Meters are a common unit in non-US made OBJs...
So, panic over - try it in 'meters' and it should work fine...

Krisidious · 15 Oct 2010, 09:35

damn counting with 10's burned me again... (hits self in head meter not millimeter!)

awesome plugin. I also love the groupstoobj.rb ...

eloiraiol · 26 Oct 2010, 16:31

Because the images do not appear in the trial, only show the textures in SketchUp itself. Where is a picture is blank!

TIG · 26 Oct 2010, 21:33

@eloiraiol said:

Because the images do not appear in the trial, only show the textures in SketchUp itself. Where is a picture is blank!

Please explain your problem another way... I don't understand

wyatt · 27 Oct 2010, 14:25

I'm stepping into an area that I don't fully understand, so hopefully this question makes sense. I would like to import an obj with vertex colors turned on. I have a tcs file that I believe contains the vertex color data, but the obj and mtl don't appear to reference that file at all. I haven't found much searching Google for the tcs file format. Is it possible to import vertex colors into SU?

TIG · 27 Oct 2010, 15:15

@unknownuser said:

I'm stepping into an area that I don't fully understand, so hopefully this question makes sense. I would like to import an obj with vertex colors turned on. I have a tcs file that I believe contains the vertex color data, but the obj and mtl don't appear to reference that file at all. I haven't found much searching Google for the tcs file format. Is it possible to import vertex colors into SU?

Not with this tool - it only imports 'faces' with their colors/textures - not even raw 'edges'...

thomthom · 27 Oct 2010, 15:17

Vertex colours, the connected face should have a surface that blends the colour from each vertex?

wyatt · 27 Oct 2010, 15:46

Yes, that's the idea.

majid · 3 Nov 2010, 19:42

thanx again TIG now I can play with sculptris + SU

Chris Fullmer · 28 Nov 2010, 05:57

@unknownuser said:

I'm stepping into an area that I don't fully understand, so hopefully this question makes sense. I would like to import an obj with vertex colors turned on. I have a tcs file that I believe contains the vertex color data, but the obj and mtl don't appear to reference that file at all. I haven't found much searching Google for the tcs file format. Is it possible to import vertex colors into SU?

Wyatt, where di you get the "tcs" file? I think I know what you're asking, but I have not seen any tcs file at any point. I'm scheming some things right now along these lines.

wyatt · 29 Nov 2010, 00:07

Hey Chris. Yes, the tcs file comes from tree[d]. I'm not at my computer right now, but from what I remember it's a series of rgb values that I believe tree[d] uses to compute the color variations in the leaves. It would be great if you are figuring out a way to use that data in SU. Let me know if I can help.

pibuz · 2 Dec 2010, 11:50

+1 to Wyatt's request! Could be very useful using Tree[d] trees!

zubenelgennubi · 4 Dec 2010, 20:32

thank you so much!!!!!

rattusNOR · 24 Jan 2011, 23:58

worked very well... thanks!!

3deviator · 4 Feb 2011, 05:53

hellow TIG, i got some problem using this plug-ins. i don't know if the import OBJ plug-ins have a problem or the software i used. I use Frecle tree[d] 3.1 its a free tree generator software to generate tree and export it to .obj file and then import it to sketchup pro 8 using Import OBJ. when i finish importing it, the tree has no texture even i use import OBJ[with texture]as seen in the pictures. whats the problem for it TIG? Anyways, heres the link for tree[d]3.1 software http://www.frecle.net/index.php?show=treed.about . It is great help to us if you can fix this one, we can generate trees and load it to sketchup. hope you will reply this post, thanks.

TIG · 4 Feb 2011, 11:28

3deviator

The fault isn't with OBJimporter itself but rather with the 'tree[d]' OBJ exporter.
It makes a OBJ file describing the geometry and a MTL file describing the materials but fails to export the image files to which the MTL file refers.
If you open the MTL file with notepad you'll see some image files specified at the end of each material definition - e.g. map_Kd wood03.png
These image files are in the tree[d] 'Textures' folder - typically it's C:\Program Files\gile[s]\plugins\tree[d]\Textures
Copy the missing image files from that folder to the folder into which you have exported your OBJ/MTL files.
Now your image OBJ file imported into a SKP 'with Textures' will have the textures applied...
Now for the rub! The exported/imported tree[d] is relatively 'useless' !!! It has single sided leaf faces and the texture is only applied to the front faces, so all of the backs show as the default back color - usually a blue/gray AND the leaf faces have visible edges and a diagonal line across the middle.
BUT there is a way to fix these issues...
Put the attached script [ FixtreeD.rb] into ../Plugins folder and reopen the SKP with the tree in it, so that the script is loaded.
Now edit the group containing the tree and type FixtreeD.new into the Ruby Console (it runs on all entities in the current context, so DON'T use it outside of the tree group's edit).
All coplanar edges will be removed.
All other edges are hidden, and no longer cast/receive shadows.
The leaves' front materials are copied to their backs.
Hidden Geometry is switched 'off'.
Progress is reported in the Status Bar and Ruby Console
It can take some time to process a complex tree that has 1000s of parts The attached zip file contains a tree[d] exported OBJ/MTL AND the required images listed in that MTL [but not exported by tree[d]!], it also contains the imported OBJ tree showing the problems...Examples This image shows what the 'fixed' tree looks like with the edges/back_faces etc sorted...

pilou · 4 Feb 2011, 11:31

TIG is Mac Gyver!

honoluludesktop · 4 Feb 2011, 20:45

I'm guessing that's a render of a made-up model? If so, add a zip-gun, wrap it into a bracelet, and represent it:-)

3deviator · 7 Feb 2011, 11:22

Thanks for your reply TIG, this is very nice script, its a Great Help. Thanks a lot. It works fine although it took too long in processing but you will also satisfied with the output. I'm very impress of what you did TIG,your truly "The Incredible Giant".

Gaieus · 7 Feb 2011, 11:23

@3deviator said:

Thanks for your reply TIG, this is very nice script, its a Great Help. Thanks a lot. It works fine although it took too long in processing but you will also satisfied with the output. I'm very impress of what you did TIG,your truly "The Incredible Giant".

3deviator, use the reply (or quote) buttons to reply a post, not the report function, please. (I know, this needs some sort of routine, too). I had to copy/paste/change poster and all for the above post...

Cheers