| 30 |
|
of indirect irradiance calculations to R, where |
| 31 |
|
R is a real number in the range (0,1.0). The |
| 32 |
|
default value is 0.50 (50%). |
| 33 |
+ |
|
| 34 |
+ |
-DPMAP_OOC Builds the out-of-core photon map. The photon data resides |
| 35 |
+ |
in a leaf file on disk with suffix ".leaf" and is loaded on |
| 36 |
+ |
demand. This is intended for very large photon maps (up to |
| 37 |
+ |
4.3 billion photons) particularly for annual simulations |
| 38 |
+ |
with rcontrib. This switch is disabled by default, which |
| 39 |
+ |
builds the in-core photon map used in previous releases; |
| 40 |
+ |
this resides entirely in main memory. These options are |
| 41 |
+ |
mutually exclusive, and the resulting photon map files are |
| 42 |
+ |
incompatible. |
| 43 |
+ |
|
| 44 |
+ |
-DPMAP_PRIMARYPOS |
| 45 |
+ |
Stores photon primary hitpoints for binning using the -f |
| 46 |
+ |
option with rcontrib if the function file requires them. |
| 47 |
+ |
This consumes an additional 3 floats and is disabled per |
| 48 |
+ |
default to reduce the size of the resulting photon maps. |
| 49 |
+ |
|
| 50 |
+ |
-DPMAP_FLOAT_FLUX |
| 51 |
+ |
Stores photon flux as floats instead of more compact RGBE |
| 52 |
+ |
(the default). In terms of accuracy, the difference would |
| 53 |
+ |
only be noticeable with highly saturated colours. |
| 54 |
+ |
|
| 55 |
+ |
-DPMAP_ROI Enables the -api option to mkpmap. This constrains photon |
| 56 |
+ |
deposition only to the specified region of interest (defined |
| 57 |
+ |
as a bounding volume) for situations where it is known a |
| 58 |
+ |
priori that photon map lookups will occur outside this |
| 59 |
+ |
region. This is disabled per default as it can lead to |
| 60 |
+ |
biased results outside the ROI, or near its boundaries. Ziss |
| 61 |
+ |
option for ze eckspertz only! |
| 62 |
+ |
|
| 63 |
+ |
-DPMAP_RUNAWAY_WARN |
| 64 |
+ |
Causes mkpmap to issue a warning if a photon reaches the |
| 65 |
+ |
maximum number of bounces (as specified with -apm) and is |
| 66 |
+ |
terminated. |
| 67 |
+ |
|
| 68 |
+ |
-DPMAP_LOOKUP_WARN |
| 69 |
+ |
Causes rtrace et al to issue warnings when short photon |
| 70 |
+ |
lookups occur, i.e. fewer photons are found than specified |
| 71 |
+ |
as lookup bandwidth with -ap. This is generally not fatal, |
| 72 |
+ |
but can increase noise, and may indicate a higher bandwidth |
| 73 |
+ |
is needed. This is disabled per default as it can result in |
| 74 |
+ |
excessive console clutter. |
| 75 |
+ |
|
| 76 |
+ |
-DPMAP_LOOKUP_REDO |
| 77 |
+ |
Causes rtrace et al to repeat short photon map |
| 78 |
+ |
lookups with a progressively larger radius until the |
| 79 |
+ |
target photon count specified with -ap is met. This switch |
| 80 |
+ |
has no effect in conjunction with the -am option, since this |
| 81 |
+ |
disables lookup radius adaptation. |
| 82 |
+ |
|
| 83 |
+ |
-DPMAP_EPANECHNIKOV |
| 84 |
+ |
Causes rtrace et al to apply an Epanechnikov filter during |
| 85 |
+ |
photon density estimates. This weights photons according to |
| 86 |
+ |
the inverse distance to the lookup point in order to reduce |
| 87 |
+ |
bias. The default behaviour does not perform filtering. |
