| 100 |
|
may be useful if the resulting photon map size greatly deviates from |
| 101 |
|
\fInphotons\fR with a very low average reflectance. |
| 102 |
|
|
| 103 |
< |
.IP "\fB\-api \fIxmin ymin zmin xmax ymax zmax\fR" |
| 104 |
< |
Define a region of interest within which to store photons exclusively; |
| 105 |
< |
photons will only be stored within the volume bounded by the given minimum |
| 106 |
< |
and maximum coordinates. Multiple instances of this option may be specified |
| 107 |
< |
with cumulative effect to define compound regions of interest. This is |
| 108 |
< |
useful for constraining photons to only the relevant regions of a scene, but |
| 109 |
< |
may increase the photon distribution time. |
| 103 |
> |
.IP "\fB\-api \fImin_x min_y min_z max_x max_y max_z\fR" |
| 104 |
> |
Define a rectangular region of interest within which to store photons |
| 105 |
> |
exclusively; photons will only be stored within the volume bounded by the |
| 106 |
> |
given minimum and maximum coordinates. Multiple instances of this option may |
| 107 |
> |
be specified with cumulative effect to define compound regions of interest. |
| 108 |
> |
This is useful for constraining photons to only the relevant regions of a |
| 109 |
> |
scene, but may increase the photon distribution time. |
| 110 |
|
.IP |
| 111 |
|
\fBWARNING: this is an optimisation option for advanced users (an elite |
| 112 |
|
group collectively known as \fIZe Ekspertz\fB) and may yield biased results. |
| 113 |
|
Use with caution!\fR |
| 114 |
|
|
| 115 |
+ |
.IP "\fB-apI \fIpos_x pos_y pos_z rad\fR" |
| 116 |
+ |
Similar to \fB\-api\fR, but with a spherical region of interest of given |
| 117 |
+ |
radius, centred at the given coordinates. |
| 118 |
+ |
|
| 119 |
|
.IP "\fB\-apm \fImaxbounce\fR" |
| 120 |
|
Synonymous with \fB\-lr\fR for backwards compatibility. May be removed in |
| 121 |
|
future releases. |
| 261 |
|
port in case of a distant source) is spatially partitioned to distribute the |
| 262 |
|
photon emission over its surface. This parameter specifies the ratio of the |
| 263 |
|
size (per dimension) of each partition to the scene cube, and may need |
| 264 |
< |
to be increased for modified light sources (e.g. via \fIbrightfunc\fR) with |
| 264 |
> |
to be reduced for modified light sources (e.g. via \fIbrightfunc\fR) with |
| 265 |
|
high spatial variance, or for partially occluded photon ports. |
| 266 |
|
|
| 267 |
|
.IP "\fB\-e \fIfile\fR" |
