CHAPTER 6
490
Rendering
NAME
APPEARANCE
DEFINITION
CosineDot
cos
(
180
×
x
)
cos
(
180
×
y
)
------------------------------ + ------------------------------
-
-
2
2
{ 180 mul cos exch 180 mul cos add 2 div }
Double
x
sin
⎛
360
×
--
⎞
⎝
2
⎠
sin
(
360
×
y
)
------------------------------ + -----------------------------
-
-
2
2
{ 360 mul sin 2 div exch 2 div 360 mul sin 2 div add }
InvertedDouble
x
⎛
sin
⎛
360
×
--
⎞
⎞
⎜ ⎝
2
⎠
sin
(
360
×
y
)
⎟
–
⎜
------------------------------ + -----------------------------
⎟
-
-
2
2
⎜
⎟
⎝
⎠
{ 360 mul sin 2 div exch 2 div 360 mul sin 2 div add neg }
Line
−|
y
|
{ exch pop abs neg }
LineX
x
{ pop }