here, adam tries to write a some code that will turn points into pictures to better understand graphics programming
i'm using https://github.com/ssloy/tinyrenderer to give me a nice order to implement features in. the model is not my own.
here are some past progress screenshots; unfortunately I didn't capture any initial work, so the oldest screen is of a complete wireframe.
shading fixed
some naive gouroud fragment shading:
perspective projection:
now with a diffuse texture! it took a while for me to figure out how to map between uw and xyz.
a functional light source! this uses z buffering instead of the normals i'm calculating to determine which faces should be drawn.
light almost working
eventually i got triangle filling correct. here's the first evidence of my lighting math being correct somewhere. this is also the first stab at backface culling; faces that aren't lit are colored 000.
here's a really cool error from an attempt at filling the triangles ... iirc, for each triangle, i was selecting a vertex and drawing lines from that vertex to the opposite edge by incrementing the angle between the "first" edge and the line to draw. didn't work, but it will make a great album cover one day.
i spent many weeks trying to fill in triangles, which it turns out is not easy. my math for moving between face coordinates and world coordinates was sloppy.
we can read a file with position vertices and draw a wireframe.
