Examples 1

[Examples]
0 - Smallest circle through two free points
1 - Smallest semi-circle through two free points
2 - Two intersecting circles
3 - Drag a point around a movable circle
4 - Horizontal Hatching with Adjustable Separation
5 - Fixed Circle with Adjustable Horizontal Hatching
6 - Fixed Circle with Adjustable Angle Hatching
7 - Fixed Circle with Adjustable Diagonal Hatching
8 - Two Overlapping Fixed Circle with Adjustable Hatching
9 - ...