| aaaaaaaaaaaaaa | xxxxxxxxxxxxx | xxxxxxxxxxxxxx | |
|---|---|---|---|
|
x > 0 (x >=1px) |
x <= 0 |
y == y2 |
|
|
x >= 0 |
x < 0 |
y == y2/2 |
|
|
y > 0 |
y <= 0 |
n |
|
|
y >= 0 |
y < 0 |
n |
|
|
x > 0 && y > 0 |
n |
n |
|
|
x < 0 && y > 0 |
n |
n |
|
|
x < 0 && y < 0 |
n |
n | |
|
x > 0 && y < 0 |
n |
n |
|
|
n |
n |
n | |
|
n |
n |
n |