I'm trying to draw the image number 3 (see add files) but after reading the .stl file and drawing vertex I have the results that you can see on image 1 and 2 (the difference of color isn't important).

Image 1 has been take looking the point 0,0,0.
Image 2 has been take beeing at the left of viewport.
Image 3 has been take from MeshLab software.

I know that the question isn't easy but can someone give his opinion? Is it a camera error or I'm doing something wrong while drawing?