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2

It seems to be just a scalar Bezier function to me, where the second coefficient is determined by $a$ $$(1-x)^2 + a 2 (1-x) x,$$ here $a \in [0, 1]$ is a normalized percentage. This gets you pretty close to the function that is graphed, but the function will not be as flat for $a = 0$ and $a = 1$. I suspect the function is of a higher degree: (1-x)^3 + a 3(...

1

The rendering engine that rendered this image is using a technique called deferred rendering, which first writes scene information (as seen from the camera) to seperate buffers (such as position, normal, and albedo buffers) and then calculates lighting for the image based off this information. It is important that we have position and normal buffers on top ...

3

You might want to check matplotlib-cpp. You'll find a "funny-looking xkcd-styled example" in the README. I also saw xkcd related entries on matplotlib's Python documentation. So, it should be available in Python too. However, I did not use these libraries myself. I just stumbled upon matplotlib-cpp while I was looking for a plotting library for C++....

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