When i make a game about space, i need a space, preferably filled with solarsystems, astroids and all that stuff. Because i want it to be generated and not placed piece by piece i need some kind of reference what galaxies actually look like. Wikipedia helped me a lot, and there even was a nice image containing a top-down view on 6 types of galaxies.
At first the random generated galaxies looked quite "random", but in a noise kinda way. galaxies dont look like this. But there would be no point in generating a random map, then applying a large physics simulation just to create a credible looking galaxy.
When I first though about game developement i came across procedural generated landscapes, most of them using heightmaps. i didn't like those heightmaps because they dont give much variation in the landscape. But those heightmaps could be used to influence the generation of a galaxy. using the images above i could influence the random generation of my galaxy by giving the white value of a pixel a large part in the decision if a planet could be generated there or not.
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