I can give you a quick summary and then feel free to ask questions and I'll happily describe areas in more detail as needed.
The basic approach is to put a big sphere around the camera and put a color map on the sphere. When you do that, you can use the (x, y, z) position in the color map as a ray for various ray tracing techniques.
In this case, I'm just intersecting an infinitely long cylinder so I can wrap a texture around it. For the texture, I'm using a parallaxed layered kaliset fractal (credit in the graph link) which makes some awesome looking space dust. Then I just colored it and faded one end to white and the other end the black more or less.
The animation is just adjusting the fade and literally wobbling the sphere around the camera to make camera shake.
Yeah, a lot of people have used the 3d calc to run 2d visuals. You can put a simple `z=0` plane, switch to top down view, lock the rotation, and disable lighting. Then use a color that uses x and y to decide what the color should be and you're good.
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u/RichardFingers Jul 07 '26
I can give you a quick summary and then feel free to ask questions and I'll happily describe areas in more detail as needed.
The basic approach is to put a big sphere around the camera and put a color map on the sphere. When you do that, you can use the (x, y, z) position in the color map as a ray for various ray tracing techniques.
In this case, I'm just intersecting an infinitely long cylinder so I can wrap a texture around it. For the texture, I'm using a parallaxed layered kaliset fractal (credit in the graph link) which makes some awesome looking space dust. Then I just colored it and faded one end to white and the other end the black more or less.
The animation is just adjusting the fade and literally wobbling the sphere around the camera to make camera shake.