Fractal formulas are stored in fractal formula files (*.ufm). Each file can
contain multiple formulas.
The Formula tab is divided into two panes. The top pane contains global calculation
settings.
| Drawing Method |
Selects how the pixels are calculated.
- Guessing starts with a low-resolution preview, and then gradually
increases the resolution while trying to guess pixels instead of calculating
them. This is the fastest option, but also the least accurate.
When you are working with animations,
use this drawing method for fast animation previews.
- Multi-pass Linear also starts with a low-resolution preview,
but it calculates all pixels instead of guessing them.
- One-pass Linear calculates all pixels from top to bottom.
For maximum accuracy, use one of the linear drawing methods.
|
| Periodicity Checking |
Specifies the amount of periodicity checking used. Periodicity checking
can greatly enhance the speed at which inside areas are calculated. Rough
is the fastest option, but also the least accurate. Off turns off
periodicity checking completely for the highest accuracy.
Some fractal formulas do not work well with periodicity checking, in
which case you should turn it off. If odd lines or dots appear on the top of the fractal, this may be the case.
If perturbation calculations are used, the Periodicity Checking setting is replaced by a Perturbation setting for control over the precision. See Perturbation calculations.
|
| Additional Precision |
Specifies how many extra digits of precision should be used for calculations.
See Arbitrary Precision. |
