sct

Commit: 0de52379321c80e58a2fe082d84c77fbd8a3d744
Parent: 6ee56eab6a783b69f82092e46163badaf1a61b78
Author: звездочёт
Date:   Thu,  8 Aug 2019 20:02:05 +0300

Resolve #10: References to sources

Co-Authored-By: Fabian Foerg <3429782+faf0@users.noreply.github.com>

Diffstat:
M
CHANGELOG
 | 
4
++--
M
sct.c
 | 
12
+++++++++++-
M
xsct.1
 | 
2
+-

3 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/CHANGELOG b/CHANGELOG
@@ -1,10 +1,10 @@
 PROJECT: https://github.com/faf0/sct
 
 1.5: zvezdochiot on 08 Aug 2019
-* Option --verbose for debug
+* Option --verbose to display debugging information
 
 1.5: zvezdochiot on 07 Aug 2019
-* Approximation of the `redshift` table (no limits)
+* Approximation of the `redshift` table from https://github.com/jonls/redshift/blob/04760afe31bff5b26cf18fe51606e7bdeac15504/src/colorramp.c#L30-L273 without limits
 
 1.4: zvezdochiot on 04 Aug 2019
 * Read current temperature
diff --git a/sct.c b/sct.c
@@ -38,19 +38,29 @@ static void usage(char * pname)
         "\tIf the argument is 0, xsct resets the display to the default temperature (6500K)\n"
         "\tIf no arguments are passed, xsct estimates the current display temperature\n"
         "Options:\n"
-        "\t-v, --verbose \t xsct will display debug information\n"
+        "\t-v, --verbose \t xsct will display debugging information\n"
         "\t-h, --help \t xsct will display this usage information\n", pname);
 }
 
 #define TEMPERATURE_NORM    6500
 #define TEMPERATURE_ZERO    700
 #define GAMMA_MULT          65535.0
+// Approximation of the `redshift` table from
+// https://github.com/jonls/redshift/blob/04760afe31bff5b26cf18fe51606e7bdeac15504/src/colorramp.c#L30-L273
+// without limits:
+// GAMMA = K0 + K1 * ln(T - T0)
+ // Red range (T0 = TEMPERATURE_ZERO)
+  // Green color
 #define GAMMA_K0GR          -1.47751309139817
 #define GAMMA_K1GR          0.28590164772055
+  // Blue color
 #define GAMMA_K0BR          -4.38321650114872
 #define GAMMA_K1BR          0.6212158769447
+ // Blue range  (T0 = TEMPERATURE_NORM - TEMPERATURE_ZERO)
+  // Red color
 #define GAMMA_K0RB          1.75390204039018
 #define GAMMA_K1RB          -0.1150805671482
+  // Green color
 #define GAMMA_K0GB          1.49221604915144
 #define GAMMA_K1GB          -0.07513509588921
 
diff --git a/xsct.1 b/xsct.1
@@ -16,7 +16,7 @@ sets the screen's color temperature.
 Display usage information and exit
 .TP
 .B -v, --verbose
-Display debug information
+Display debugging information
 .TP
 .I [temperature]
 Black body temperature