draws .obj file inside gimp (just for fun) (Plugin)

Rod · **Joined:** May 16, 2010 **Posts:** 14728 **Location:** USA

My results with your filter.This took a very long time to process by the way on my Windows 8 64 bit machine.

Size of the OBJ file is 8 MB.

It is still drawing by the way. The size is already 2.2 gigs

trandoductin · **Posted:** Fri Jun 13, 2014 9:41 pm **(#22)**

I blame gimp_pencil for speed

trandoductin · **Posted:** Fri Jun 13, 2014 9:57 pm **(#23)**

I have added an auto-scale option.

It will calculate to fit the furthest point from the center of image (to take up 90% so leaving 5% at the closest edge to border, see sample image below where autoscale is selected)

Here's the auto-scale version of the plug-in

Attachment:

open-obj-file.zip [3.15 KiB]
Downloaded 200 times

See next post for an ULTRA-fast version (access pixel data directly instead of calling gimp_pencil)

trandoductin · **Posted:** Fri Jun 13, 2014 11:16 pm **(#24)**

this latest version will run in seconds instead of minutes! :yes

(doesn't call gimp_pencil but manually draws lines/edges by accessing the pixel raw data)

Attachment:

open-obj-file.zip [3.84 KiB]
Downloaded 512 times

another version that doesn't bother search for unique vertices/edges (it's actually faster to just draw them all than searching for them) that version is ->here<-

Rod · **Joined:** May 16, 2010 **Posts:** 14728 **Location:** USA

Yes that newest filter works much faster now. Thank you.

Same OBJ file and much smaller size results.

trandoductin · **Posted:** Sat Jun 14, 2014 1:17 am **(#26)**

thanks for trying it out Rod!

Rod · **Joined:** May 16, 2010 **Posts:** 14728 **Location:** USA

trandoductin wrote:

thanks for trying it out Rod!

Any time.

trandoductin · **Posted:** Sat Jun 14, 2014 1:43 am **(#28)**

I found that by searching for unique vertices/edges it's actually slower than just drawing it with the fast version so this version
just simply draws so it's even faster.

Attachment:

open-obj-file.zip [3.7 KiB]
Downloaded 343 times

Tried it out with a huge .obj file with 100000 triangles (buddha.obj) had to draw it on a really large canvas (6400x8000) then cropped.

Attachment:

buddha.zip [1.21 MiB]
Downloaded 165 times

otherwise if drawn on a small image, you'll get a sort of gray shading (with some holes)

Rod · **Joined:** May 16, 2010 **Posts:** 14728 **Location:** USA

Wow that draws really fast now. 37 seconds for Budda.obj file. :bigthup

wbool63 · **Posted:** Sat Jun 14, 2014 5:05 am **(#30)**

Trandoductin, Just letting you know the plugin works in Gimp 2.6.11 (win 7)

Erisian · **Posted:** Sat Jun 14, 2014 5:32 am **(#31)**

Thank you very much for this trandoductin. I've been wanting something like it for a long time.

molly · **Joined:** Apr 07, 2010 **Posts:** 14182

trandoductin wrote:

this latest version will run in seconds instead of minutes! :yes

(doesn't call gimp_pencil but manually draws lines/edges by accessing the pixel raw data)

Attachment:

open-obj-file.zip

another version that doesn't bother search for unique vertices/edges (it's actually faster to just draw them all than searching for them) that version is ->here<-
[ Image ]

Wow! that is very cool... thank you
For Linux users, don't forget to allow permissions for this plug-in

@trandoductin, I downloaded your latest version, I selected an image and opened a black layer, rain the script at default and came up with this error.
What am I doing wrong? :oops:

wbool63 · **Posted:** Sat Jun 14, 2014 7:38 am **(#33)**

The fast script /plugin is fast. This airplane took about 1.5 secs. Problem is I had to redraw about 20 times to get a decent angle. I do not understand the x,y,z relationship. It does not seem to work the same as in the Map Object plugin but it probably does.(Not having a preview makes it very difficult)
My next question is what can you do with the image as you lose the vertex and line info. Is it intended to be a display only type filter, or are there uses for blender or other 3d display programs? Nice to play with though.

molly · **Joined:** Apr 07, 2010 **Posts:** 14182

Wbool, did you just open an image to run that plug-in? or did you have to do something to it first?

wbool63 · **Posted:** Sat Jun 14, 2014 7:57 am **(#35)**

molly wrote:

Wbool, did you just open an image to run that plug-in? or did you have to do something to it first?

Molly as far as I know the plugin will only work with files that have a .obj file type.
Have a look at http://tf3dm.com/3d-models/file/1/obj where you can find some free .obj files. I cannot guarantee that they will all work.

molly · **Joined:** Apr 07, 2010 **Posts:** 14182

Thanks wooble, I didn't know that.

trandoductin · **Posted:** Sat Jun 14, 2014 11:02 am **(#37)**

molly wrote:

trandoductin wrote:

this latest version will run in seconds instead of minutes! :yes

(doesn't call gimp_pencil but manually draws lines/edges by accessing the pixel raw data)

Attachment:

open-obj-file.zip

another version that doesn't bother search for unique vertices/edges (it's actually faster to just draw them all than searching for them) that version is ->here<-
[ Image ]

Wow! that is very cool... thank you
For Linux users, don't forget to allow permissions for this plug-in

@trandoductin, I downloaded your latest version, I selected an image and opened a black layer, rain the script at default and came up with this error.
What am I doing wrong? :oops:

[ Image ]

Molly can you attached a zipped up of the .obj file that you got this error on?

molly · **Joined:** Apr 07, 2010 **Posts:** 14182

Sorry trandoductin, I didn't use a .obj file. I didn't know I was supposed to. I tried downloading one from Wbool's link but it didn't work.

trandoductin · **Posted:** Sat Jun 14, 2014 11:15 am **(#39)**

wbool63 wrote:

The fast script /plugin is fast. This airplane took about 1.5 secs. Problem is I had to redraw about 20 times to get a decent angle. I do not understand the x,y,z relationship. It does not seem to work the same as in the Map Object plugin but it probably does.(Not having a preview makes it very difficult)
My next question is what can you do with the image as you lose the vertex and line info. Is it intended to be a display only type filter, or are there uses for blender or other 3d display programs? Nice to play with though.
[ Image ]

The rotatation is different than the Map Object. Map Object seems to rotate the axises as well. While with this plugin, rotate x will rotate the object around the x-axis (a line going left-right), rotate y will rotate the object around the y-axis (a line going top-bottom), rotate z will rotate the object around the z-axis (a line going from you into the screen).
I guess it's just a display only type filter (for fun) because you're right, after it draws it all the vertex/line/face information is lost.

trandoductin · **Posted:** Sat Jun 14, 2014 11:20 am **(#40)**

molly wrote:

Sorry trandoductin, I didn't use a .obj file. I didn't know I was supposed to. I tried downloading one from Wbool's link but it didn't work.

Molly, the plugin opens the .obj file that you select in the first option when the script runs and draws a wireframe of it onto your active/selected layer (have this layer black/dark colored, because the wireframe will be drawn in gray scale from dark to light so it's better on a dark background)
So you have to have an .obj file somewhere on your computer (or downloaded) select an .obj file to open.
hope that helps

here's a try of statueLiberty.obj file found on wbool's mentioned link

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