Applet for visualizing Necklaces

Instructions

1. Create new image = Creates and shows a new neclace image. A new image can be created at any time.


2. Random obstacles = How many random obstacles the program creates. Select the value by clicking it on the list. If you only want to add you own obstacles, select 0.
   • Creating own obstacles: Draw an obstacle by clicking points into the map. Closing the area of the obstacle (returning to the first point) creates, adds and colors the new obstacle black. New obstacles can be created at any time.


3. Minimum distance = Minimum number of circles between two beads. Select the value by clicking it on the list.


4. Maximum distance = Maximum number of circles between two beads. Select the value by clicking it on the list.


5. Separation = how much separation there are between different necklaces (recommendation: use when the disk radius is small).


6. Save obstacles = Saves obstacles of the current image. The saved obstacles are reused, when a new image is created. If user only wants to use saved obstacles, select 0 from "random obstacles". Otherwise additional obstacles are added the normal way.


7. Delete obstacles = Deletes all the obstacles that have been saved and added (black obstacles) or are currently been drawn (blue obstacle).


8. Radius = The radius of the disks. Size of the the disk is shown and drawn under the scrollbar.

Other notes

• Dark lines on the map represent sector boundaries. Beads are not placed right on top these lines. Airplanes can fly over sector boundaries, but the bead must be either inside or outside of the sector area.


• If the disk radius is small or there are many obstacles, painting and loading the image is very slow.