Starfields and Nebulae Part 2
I will occasionally mention that a certain action will make a transform non-conformal or break angle-preservation. You don’t have to worry too much about the math behind this, what it means is that shapes are distorted by such transforms, i.e., stretched, squished, or skewed. When the effect is subtle, it can add nice filament-like structures to a nebula. However, as soon as you add stars, it will also stretch, squish, or skew your stars, resulting in oval or even long bent “stars”, which look very unnatural. Feel free to use this effect, if you like it, I mostly mention it so that when it happens and you want to get rid of you, you will know what to look for in your parameters.
We’ll start with the basic loop from last time, but before we jump into it, I’d like to point out something that some of you might have already noticed: the loop in the last tutorial was a bit more complicated than it needed to be. The bread and butter of any nebula are Affine and Spherical. he left shows the loop from the last tutorial. Since both Sphericals did the exact same thing last time, we could have used just one. However, this isn’t necessarily always true, so think of the right one as an extremely basic version, while the left side is a bit more versatile and will form the backbone of almost any loop that you will be using for star fields and nebulae.
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