Comment on the Featured Image (March 2017)

originally rendered POV-Ray image

During university (in the early 2000s) I first came into contact with the Persistence of Vision Raytracer (or short POV-Ray) and my fellow students and me were busy happily exploring it’s capabilities, especially for displaying physics data or just plain old fun.

On of the objects that always fascinated us was the Julia Fractal with it’s inconceivable and superdimensional nature and infinite richness of possible shapes. So much that I came up with a pleasant looking shape that a friend of mine later took as a logo for his (one man) company. I later lost all source files I used to create this.

Over a decade later now I may need to recreate that logo and took this as an excuse to re-familiarise myself with the software and Julia Fractals. For those interested there are countless good explanations out there, e.g. from Paul Bourke.

Now, unless someone asks me, I won’t try to explain the concept again in detail. Suffice it to say that the shape is a subset of space which behaves under a certain mathematical transformation in one of two possible ways. Sounds abstract? It most certainly is and yet it produces beautiful organic looking things that can be rendered in color or with textures to make pieces of art. So now for the gory details. Let’s have a look at the code.

This sets the background to white.

This sets the camera up. The right statement is used to set the aspect ratio of the rendered image to the preferred size of the featured images in the Twenty Seventeen WordPress Theme.

I use two light sources, one blue and one red, to give the image some simple color. The fractal itself is white.

And this is the fractal object. Looks not too complicated but there are so many knobs that can be tweaked that there are literally endless possibilities.

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