pclausen/obj2png

Python script for converting 3D triangular mesh (obj) to image file (png) with MatPlotLib

obj2png's Issues

how to install ObjFIle?

Clipping

Hi,
Not an issue but a question/request.

I searched the web and can't find the solution so I was hoping you could help.

I am transforming my obj to png but would like to have the possibility to clip/cut the object. Not sure what the right word for it is but here is an example:

My object .obj file looks like this:

and comes out like this:

Another way of seeing this would be:
I would want to move the camera in space, to get very close to the object, or better go through the object, and halfway in in it, where the other half is out of picture and clipped, i would want to create a .png of the current view.

Any idea how i could achieve that?

Still have a bug in ObjFile.py

Thanks for your work. And I still have met this problem after I download the latest version code. Could you fix it again?
PS D:\obj2png-master\src> python obj2png.py -i 2.obj
Namespace(animate=False, azim=None, elevation=None, objfiles=['2.obj'], outfile=None, quality=None, scale=None, view=False)
Converting 2.obj to 2.png
Traceback (most recent call last):
File "obj2png.py", line 122, in
ob.Plot(outfile,elevation=elevation,azim=azim,dpi=dpi,scale=scale,animate=animate)
File "D:\obj2png-master\src\ObjFile.py", line 178, in Plot
ax.plot_trisurf(self.nodes[:,0],self.nodes[:,1],self.nodes[:,2], triangles=tri)
IndexError: too many indices for array
2.zip

Rotation and translation of object

Hi,
Great work, thanks.

Can we able to get the rotation and translation of the object as matrix?

Best regards, Suresh

AttributeError: 'Axes3DSubplot' object has no attribute 'set_box_aspect'

Running the script gave me throws this error. I suspect it is because of a version mismatch.
I think you should specify version numbers in your requirements.txt

Traceback (most recent call last):
File "obj2png/src/obj2png.py", line 122, in
ob.Plot(outfile,elevation=elevation,azim=azim,dpi=dpi,scale=scale,animate=animate)
File "/content/obj2png/src/ObjFile.py", line 184, in Plot
ax.set_box_aspect(np.ptp(limits, axis = 1))
AttributeError: 'Axes3DSubplot' object has no attribute 'set_box_aspect'`

Obj file loaded with incorrect apsects and scale

Hello,

First of all, this is a fantastic script, thank you.

I am noticing that the plotting of the obj is not the correct proportion. loading the attached file, I get

while opening it in windows gives me:

I would also like to change the color from blue to something else, and I haven't figured out how to do that yet.
Any help?

car2.zip

there is bug when I use my own obj file

thanks for your great work!!!
it is working well when I use the obj. file that you give, but when I use my obj file, there comes bugs as below:

python obj2png.py -i /home/wutao/SMPL-master/obj2png-master/src/rp_janna_posed_004_30k.obj -v
Namespace(animate=False, azim=None, elevation=None, objfiles=['/home/wutao/SMPL-master/obj2png-master/src/rp_janna_posed_004_30k.obj'], outfile=None, quality=None, scale=None, view=True)
Traceback (most recent call last):
File "obj2png.py", line 122, in
ob.Plot(outfile,elevation=elevation,azim=azim,dpi=dpi,scale=scale,animate=animate)
File "/home/wutao/SMPL-master/obj2png-master/src/ObjFile.py", line 178, in Plot
ax.plot_trisurf(self.nodes[:,0],self.nodes[:,1],self.nodes[:,2], triangles=tri)
IndexError: too many indices for array

Do you know how to solve this?
thank you so much!
rp_janna_posed_004_30k.zip

Error when executing on Max OSX

Hi,

I am trying to use your tool on my Mac.

I installed python3.

Now I do:

python3 obj2png.py -i bunny.obj -v

I get the following errors:

Traceback (most recent call last):
  File "/Users/xxx/obj2png/obj2png-main/src/obj2png.py", line 32, in <module>
    import ObjFile
  File "/Users/xxx/obj2png/obj2png-main/src/ObjFile.py", line 32, in <module>
    import numpy as np
ModuleNotFoundError: No module named 'numpy'

In line 32 of your code in obj2png.py, there is:
import ObjFile

How can I solve this problem?

Thanks.

ValueError: invalid literal for int() with base 10: '1/'

Hello dear pclausen,

first things first: thank you so much for this script, it is exactly what I need!

But when running the script as you propose, I am facing the following issue:

Traceback (most recent call last):
  File "obj2png.py", line 121, in <module>
    ob = ObjFile.ObjFile(objfile)
  File "/Users/obj2png/src/ObjFile.py", line 59, in __init__
    self.ObjParse(obj_file)
  File "/Users/obj2png/src/ObjFile.py", line 97, in ObjParse
    faces.append(ObjFile.ToInts(f[1:]))
  File "/Users/obj2png/src/ObjFile.py", line 133, in ToInts
    v.append(int(nn))
ValueError: invalid literal for int() with base 10: '1/'

Apparently, I am not able to fix this issue.
Can you help?

Cheers :)

Does your tool support .mtl files associated with .obj files ?

Hello,

Before I try to use your great tool, I would like to know if it converts to png only the .obj file or also (.obj + .mtl) bundles ? And also (.obj + .mtl + .png) bundles (meaning .obj with textures)?

Thanks.