Open 3D models with OpenGL and VB.NET

A demo video on opening the 3D obj models and process it 
VB.NET and OpenTK (OpenGL)



Video Demo

you can download obj models from below listed websites

1. https://archive3d.net/
2. https://free3d.com/3d-models/obj
3. https://www.cgtrader.com/free-3d-models

example pics 

obj file structure example

Code:

  To create a surface with a cubic Bezier in the u direction and
    cubic uniform B-spline in the v direction:

    cstype bmatrix
    deg 3 3
    step 3 1
    bmat u  1      -3       3      -1 \
        0       3      -6       3 \
        0       0       3      -3 \
        0       0       0       1
    bmat v  0.16666 -0.50000  0.50000 -0.16666 \
        0.66666  0.00000 -1.00000  0.50000 \
        0.16666  0.50000  0.50000 -0.50000 \
        0.00000  0.00000  0.00000  0.16666