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Diffstat (limited to 'libred_get_colour.3')
| -rw-r--r-- | libred_get_colour.3 | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/libred_get_colour.3 b/libred_get_colour.3 index d169a60..afd0a7f 100644 --- a/libred_get_colour.3 +++ b/libred_get_colour.3 @@ -33,6 +33,22 @@ and all will be 1.0 if .I temp is 6500. +.PP +libred has a table of colour temperature values, the +.BR libred_get_colour () +function interpolates values that are missing. If you +don't want any interpolation the +.I temp +parameter can be specified in one of the following ways: +.TP +floor +.I (temp - LIBRED_LOWEST_TEMPERATURE) / LIBRED_DELTA_TEMPERATURE * LIBRED_DELTA_TEMPERATURE + LIBRED_LOWEST_TEMPERATURE +.TP +ceiling +.I (temp - LIBRED_LOWEST_TEMPERATURE + LIBRED_DELTA_TEMPERATURE - 1) / LIBRED_DELTA_TEMPERATURE * LIBRED_DELTA_TEMPERATURE + LIBRED_LOWEST_TEMPERATURE +.TP +round to nearest +.I (temp - LIBRED_LOWEST_TEMPERATURE + LIBRED_DELTA_TEMPERATURE / 2) / LIBRED_DELTA_TEMPERATURE * LIBRED_DELTA_TEMPERATURE + LIBRED_LOWEST_TEMPERATURE .SH RETURN VALUE Upon successful completion, the .BR libred_get_colour () |