91 |
|
.TP |
92 |
|
.BI h =kf |
93 |
|
Divide the hemisphere using the LBNL/Klems "full" sampling basis. |
94 |
+ |
(Use "h=-kf" for left-handed coordinates.) |
95 |
|
.TP |
96 |
|
.BI h =kh |
97 |
|
Divide the hemisphere using the LBNL/Klems "half" sampling basis. |
98 |
+ |
(Use "h=-kh" for left-handed coordinates.) |
99 |
|
.TP |
100 |
|
.BI h =kq |
101 |
|
Divide the hemisphere using the LBNL/Klems "quarter" sampling basis. |
102 |
+ |
(Use "h=-kq" for left-handed coordinates.) |
103 |
|
.TP |
104 |
|
.BI h =rN |
105 |
|
Divide the hemisphere using Reinhart's substructuring of the Tregenza |
109 |
|
If it is not given, |
110 |
|
.I N |
111 |
|
defaults to 1, which is just the Tregenza sky. |
112 |
+ |
(Use "h=-rN" for left-handed coordinates.) |
113 |
|
.TP |
114 |
|
.BI h =scN |
115 |
|
Subdivide the hemisphere using the Shirley-Chiu square-to-disk mapping with an |
116 |
|
.I NxN |
117 |
|
grid over the square. |
118 |
+ |
(Use "h=-scN" for left-handed coordinates.) |
119 |
|
.TP |
120 |
|
.BI u =[-]{X|Y|Z|ux,uy,uz} |
121 |
|
Orient the "up" direction for the hemisphere using the indicated axis or direction |