Pilz
Graphics by
Paul Bourke
November 2004
[ ( (x
2
+ y
2
- 1)
2
+ (z - 1)
2
] [ x
2
/c
1
2
+ (z - c
2
)
2
- 1)
2
+ y
2
] = d
Where c
1
is around 1.4 and c
2
is around 0.3
