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 }
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