numpy-stl | Simple library to make | 3D Printing library

I came across the following example in the numpy-stl docs which produces a mesh object for a cube and prints its volume --

My pyglet application to view 3-d objects in STL format is acting funny. when I load a stl file, it works fine, but then when I try to draw it, it acts funny. code doesn't crash, but the test file I loaded for a cube doesn't look right. I think it might be joining all of the points in the draw code that I don't want to join. the test file should appear 30 pixels by 30 instead of the whole upper right corner:

a picture showing that a chunk of the display is the cube.

at 150 degrees, looks almost right...

the red lines are the wireframe, green dots vertices, and gray is a face of the cube.

here is my code:

I have a Django Web application and i deployed it to Elastic Beanstalk environment. I also have the numpy-stl package. I'm trying to get a .stl file from Amazon S3 bucket and use this file with a stl package's function but i'm getting an error such as 'bytes' object has no attribute 'get_mass_properties'.

My code is;

I am generating 2D binary shapes in python. After that, I want them to be converted to a 3D STL file for 3D printing. This kind of works, but only with "simple" shapes like triangles and squares. For more complex shapes I get the following Shape :

So as we can see it kinda looks like the binary image but with some more "artifacts". I use:

• delaunay triangulation (from scipy)
• numpy-stl for generation of the stl file (needs vertices + faces for generation, that is the reason for the triangulation)
• numpy to save/load my shapes

Here is my code: