Manual Windows Functions of FracThunder 2.1
Drawing a grid
You can add some grid lines, so you can better oriënt while you are watching the fractal.
Horizontal and vertical lines
The distance d between the lines are always 1, 2 or 5 time 10 to the power n.
The coördinations are always m times d (distance).
circles and beam lines
The distance d between the circles are always 1, 2 or 5 time 10 to the power n.
The radius are always m times d (distance).
The whole circle is always divided via beams in m parts, where m is 1, 2 or 5 time 10 to the power n (n out of 0 of more).
main and sub lines
For every kind of line, the are main and sub lines. Main lines has more dintance between each other than sub lines.
The distance between sub lines are 4 or 5 times smaller than main lines, in the same situation.
Change the grid settings
- Press
or choose in the menu:Fractal | Grid.
- To display horizontal lines, check Horizontal.
- To display vertical lines, check Vertical.
- To display circles, check Circles.
- To display beam lines, check Beams.
- Choose the color for main lines at Main Lines.
- Choose the color for sub lines at Sub Lines.
- Press OK.
Tracing the computation of points in a fractal
Add Points to the Fractal
First get into the Add Point Mode. Press 
or choose in the menu:Mode | Add Points.
After getting in Adding Points Mode, you can add points by simply clicking on the factal.
Make a polygon of Points
- Get into the Add Points Mode, if needed.
- Get into the Polygon Mode too: Press
or choose in the menu:Fractal | Group as Polynoom.
- Add some points, by clicking on the fractal.
- Get out of the Polygon Mode: Press or choose in the menu:Fractal | Group as Polynoom.
- All points after getting in the Polynoom Mode, are connected with yellow lines, forming a polynoom.
This is a possible result:
It has a polygon of 5 points, and two seperate points. The two single points were added while off the polynoom Mode.
Tracing/Walking Next Points
By "Walking" to Next points, every complex value of each point are put into the fomula of the fractal and the result is the "next" point.
To get "next" points of each existing point: Press 
or choose in the menu:Fractal | Add Next Points.
The result after one step:
You can repeat tracing/walking points.
Remove Points
To remove all points (and lines): Press 
or choose in the menu:Fractal | Remove Points.
Statusbar of the FracThunder
When the cursor moves over the fractal, some information of the point where the cursor points to is displayed in de statusbar of the FracThunder, at the bottom of the main window.
The Statusbar consists of 5 parts:
- The complex value in the complex space
- The type of point:
- Inside: the point walked to one or more finit attractors.
- Outside: the point walked to the infinit attractor.
- Max Depth: the point had not reached an attractor in a specified count of steps.
- The count of steps needed to come "nearby" an attractor, when type is Outside, and fractal setting Color-continue is set,
it is an interpolated count of steps to reach the Outer Circle.
- When type is Inside, the count of cycles (finite attractors) detected.
- Fractal File Status>
- New: fractal is created and is not saved.
- (empty): fractal is opened or saved, without having open changes.
- Changed: fractal has open changes, after it has opened or saved.