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pmapdump - generate RADIANCE scene description of photon map distribution |
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.SH SYNOPSIS |
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pmapdump [\fB-n\fR \fInspheres1\fR] [\fB-r\fR \fIradscale1\fR] \fIpmap1\fR |
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[\fB-n\fR \fInspheres2\fR] [\fB-r\fR \fIradscale2\fR] \fIpmap2\fR ... |
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pmapdump [\fB-n\fR \fInspheres1\fR] [\fB-r\fR \fIradscale1\fR] |
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[\fB-c\fR \fIrcol1\fR \fIgcol1\fR \fIbcol1\fR] \fIpmap1\fR |
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[\fB-n\fR \fInspheres2\fR] [\fB-r\fR \fIradscale2\fR] |
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[\fB-c\fR \fIrcol2\fR \fIgcol2\fR \fIbcol2\fR] \fIpmap2\fR ... |
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.SH DESCRIPTION |
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\fIpmapdump\fR takes one or more photon map files generated with |
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location and local density of photons in relation to the scene geometry. |
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.PP |
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An arbitrary number of photon maps can be specified on the command line and |
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the respective photon type is determined automagically. The different |
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the respective photon type is determined automagically. The different |
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photon types are visualised as colour coded spheres according to the |
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following schema: |
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following default schema: |
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.IP |
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\fIBlue\fR: global photons |
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.br |
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\fIMagenta\fR: direct photons |
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.br |
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\fIYellow\fR: contribution photons |
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.PP |
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These colours can be overridden for individual photon maps with the \fB-c\fR |
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option (see below). |
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.SH OPTIONS |
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Options are effective for the photon map file immediately following on the |
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localised caustics) the radius can be manually corrected with this option. |
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The default value is 1.0. |
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.IP "\fB-c\fR \fIrcol\fR \fIgcol\fR \fIbcol\fR" |
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Specifies a custom sphere colour for the next photon map. The colours is |
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specified as an RGB triplet, with each component in the range (0..1]. |
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Without this option, the default colour for the corresponding photon type |
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is used. |
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.SH NOTES |
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The output may contain many overlapping spheres in areas with high photon |
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density, particularly in caustics. This results in inefficient and slow |
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.SH EXAMPLES |
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To visualise the distribution of global and caustic photons superimposed |
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on the scene geometry with 5000 and 10000 spheres, respectively: |
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on the scene geometry with 5000 pale red and 10000 pale blue spheres, |
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respectively: |
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.IP |
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pmapdump -n 5k global.pm -n 10k caustic.pm | |
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pmapdump -n 5k -c 1 0.4 0.4 global.pm -n 10k -c 0.4 0.4 1 caustic.pm | |
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oconv - scene.rad > scene_pmdump.oct |
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.PP |
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Alternatively, the dump may be viewed on its own by piping the output of |
