Release 4.0

### Plasma Parameters

Plasma has two sets of parameters, depending on the type of plasma you want to generate:

The first type is called Midpoint displacement and works by recursively dividing the area into smaller pieces, displacing the midpoint of the new area.

The second type calculates plasma using a two dimensional fractional brownian motion.

#### Midpoint Displacement

• H
This number directly determines the dimension of the object. The resulting dimension is 3-H, i.e. if H=0.9, then the dimension is 3-0.9=2.1, so it's a rough area. If H=0.1, then the dimension is 2.9, so it's a very rough area.

• Seed
Because this type works with random numbers and a seed of random numbers is deterministic, (at least if calculated by a computer), it's necessary to define a starting value of this seed. The same value results in the same random-number sequence.

• Sigma
Specifies the standard deviation of the random number generator.

#### Fractional Brownian Motion

• Iterations
Number of iterations to perform in order to generate random numbers. Higher values produce a more cloudy plasma.
• Angle Step
This value lets you rotate the whole plasma image.
• Power
Fractional Brownian Motion relies on generating random numbers. But generating these numbers is quite difficult. This parameter lets you specify a parameter which is used to scramble the random numbers. It lets you change the plasma pattern.
• Step
This is an additional parameter used to scramble random numbers between iteration cycles.
• Passes
Number of drawing passes to perform.