Added a new set of colors: "light" (brightness turned up to 150% over the

full/base colors - no low-saturation versions here).  Re-generated all of the
dyes using my gentextures.sh script, to keep them consistent.  Re-added the
gentextures script to this mod, it's too useful not to include it.

README

@@ -66,23 +66,30 @@ Titanium Dioxide.  Finally, craft one portion of that with a bucket of water
 and one piece of jungle grass.  Yields one bucket of white paint.
 
 
-Darker colors
+Darker/lighter shades
--------------
+---------------------
+
+To obtain a dark (33% relative to the 'full' version) version of a given color,
+use two portions of black dye along with the base color, which yields three
+portions of the final color.
 
 To obtain a medium-brightness (66%) version of a given color, mix the desired 
 base color from the list above with one portion of black dye (for example, 
 medium lime = lime + black).  All such mixtures yield two portions of the final 
 color.
 
-To obtain a dark (33%) version of a given color, use two portions of black dye 
+To obtain the light (150%) version of a color, mix one portion of the
-along with the base color, which yields three portions of the final color.
+desired base color with one portion of white paint, which yields two portions of
+the final color.
 
 
 Low-saturation colors
 ---------------------
 
-To get the low saturation (50%) version of one of the base colors, mix one or 
+Except for the "light" colors and the greys, all colors are available in a
-more of white, black, or a shade of grey with the desired base color:
+reduced-saturation version  To get the low saturation (50%) version of one of
+the base colors, mix one or more of white, black, or a shade of grey with the
+desired base color:
 
 Dark, low saturation: dark grey paint + color (yields 2), or two blacks + 1 
 white + color (yields 4).  For example, dark, low-saturation red = red + dark 
@@ -205,3 +212,4 @@ All of the output files will be placed in a new folder, generated-textures/
 
 Use your favorite image browser or file manager to review the results, and if
 they're right, copy them over to the textures/ folder in your mod.
+

gentextures.sh

@@ -0,0 +1,118 @@
+#!/bin/bash
+
+TEXTURE=$1
+COMPOSITE=$2
+
+base_texture="red_base_"$TEXTURE".png"
+
+if [ -z $TEXTURE ] || [ $TEXTURE == "--help" ] || [ $TEXTURE == "-h" ] ; then {
+
+	echo -e "\nUsage:"
+	echo -e "\ngentextures.sh basename [overlay filename]"
+	echo -e "\nThis script requires one or two parameters which supply the"
+	echo -e "base filename of the textures, and an optional overlay.  The"
+	echo -e "<basename> is the first part of the filename that your textures"
+	echo -e "will use when your mod is done.  For example, if you supply the"
+	echo -e "word 'cotton', this script will produce filenames like cotton_red.png"
+	echo -e "or 'cotton_dark_blue_s50.png'.  The texture that this script will"
+	echo -e "read and recolor is derived from this parameter, and will be of"
+	echo -e "the form 'red_base_xxxxx.png', where 'xxxx' is the basename."
+	echo -e "\nYou can also supply an optional overlay image filename."
+	echo -e "This image will be composited onto the output files after they"
+	echo -e "have been colorized, but without being modified.  This is useful"
+	echo -e "when you have some part of your base image that will either get"
+	echo -e "changed unpredictably or undesirably.  Simply draw two images -"
+	echo -e "one containing the whole image to be colored, and one containing"
+	echo -e "the parts that should not be changed, with transparency where the"
+	echo -e "base image should show through.\n"
+	exit 1
+} fi
+
+
+if [[ ! -z $TEXTURE && ! -e $base_texture ]]; then {
+	echo -e "\nThe basename 'red_base_"$TEXTURE".png' was not found."
+        echo -e "\nAborting.\n"
+	exit 1
+} fi
+
+if [[ ! -z $COMPOSITE && ! -e $COMPOSITE ]]; then {
+	echo -e "\nThe requested composite file '"$COMPOSITE"' was not found."
+        echo -e "\nAborting.\n"
+	exit 1
+} fi
+
+
+convert $base_texture -modulate 1,2,3 tempfile.png 1>/dev/null 2>/dev/null
+
+if (( $? )) ; then {
+	echo -e "\nImagemagick failed while testing the base texture file."
+	echo -e "\nEither the base file 'red_base_"$TEXTURE".png isn't an image,"
+	echo "or it is broken, or Imagemagick itself just didn't work."
+	echo -e "\nPlease check and correct your base image and try again."
+	echo -e "\nAborting.\n"
+	exit 1
+} fi
+
+composite_file=""
+
+if [ ! -z $COMPOSITE ] ; then {
+	convert $base_texture -modulate 1,2,3 $COMPOSITE -composite tempfile.png 1>/dev/null 2>/dev/null
+
+	if (( $? )) ; then {
+		echo -e "\nImagemagick failed while testing the composite file."
+		echo -e "\nEither the composite file '"$COMPOSITE"' isn't an image"
+		echo "or it is broken, or Imagemagick itself just didn't work."
+		echo -e "\nPlease check and correct your composite image and try again."
+		echo -e "\nAborting.\n"
+		exit 1
+	} fi
+
+	composite_file=$COMPOSITE" -composite"
+} fi
+
+rm tempfile.png
+
+base_colors="red orange yellow lime green aqua cyan skyblue blue violet magenta redviolet"
+
+echo -e -n "\nGenerating filenames based on "$base_texture
+if [ ! -z $COMPOSITE ] ; then {
+	echo ","
+	echo -n "using "$COMPOSITE" as an overlay"
+} fi
+echo -e "...\n"
+
+rm -rf generated-textures
+mkdir generated-textures
+
+hue=0
+for name in $base_colors ; do
+	hue2=`echo "scale=10; ("$hue"*200/360)+100" |bc`
+	echo $name "("$hue" degrees)"
+	echo "     dark"
+	convert $base_texture -modulate  33,100,$hue2 $composite_file "generated-textures/"$TEXTURE"_dark_"$name".png"
+	echo "     medium"
+	convert $base_texture -modulate  66,100,$hue2 $composite_file "generated-textures/"$TEXTURE"_medium_"$name".png"
+	echo "     full"
+	convert $base_texture -modulate 100,100,$hue2 $composite_file "generated-textures/"$TEXTURE"_"$name".png"
+	echo "     light"
+	convert $base_texture -modulate 150,100,$hue2 $composite_file "generated-textures/"$TEXTURE"_light_"$name".png"
+	echo "     dark, 50% saturation"
+	convert $base_texture -modulate  33,50,$hue2  $composite_file "generated-textures/"$TEXTURE"_dark_"$name"_s50.png"
+	echo "     medium, 50% saturation"
+	convert $base_texture -modulate  66,50,$hue2  $composite_file "generated-textures/"$TEXTURE"_medium_"$name"_s50.png"
+	echo "     full, 50% saturation"
+	convert $base_texture -modulate 100,50,$hue2  $composite_file "generated-textures/"$TEXTURE"_"$name"_s50.png"
+	hue=$((hue+30))
+done
+
+echo "greyscales"
+echo "     black"
+convert $base_texture -modulate  15,0,0  $composite_file "generated-textures/"$TEXTURE"_black.png"
+echo "     dark grey"
+convert $base_texture -modulate  50,0,0  $composite_file "generated-textures/"$TEXTURE"_darkgrey.png"
+echo "     medium grey"
+convert $base_texture -modulate 100,0,0  $composite_file "generated-textures/"$TEXTURE"_mediumgrey.png"
+echo "     light grey"
+convert $base_texture -modulate 150,0,0  $composite_file "generated-textures/"$TEXTURE"_lightgrey.png"
+echo "     white"
+convert $base_texture -modulate 190,0,0  $composite_file "generated-textures/"$TEXTURE"_white.png"

init.lua

@@ -286,8 +286,8 @@ minetest.register_craftitem("unifieddyes:black", {
 -- brightness from the above 12 base colors.
 
 -- "s50" in a file/item name means "saturation: 50%".
--- Brightness levels in the textures are 100%, 66%
+-- Brightness levels in the textures are 33% ("dark"), 66% ("medium"),
--- ("medium"), and 33% ("dark").
+-- 100% ("full" but not so-named), and 150% ("light").
 
 HUES = {
 	"red",
@@ -386,6 +386,15 @@ for i = 1, 12 do
 	        },
 	})
 
+	minetest.register_craft( {
+        type = "shapeless",
+        output = "unifieddyes:light_" .. hue .. " 2",
+        recipe = {
+                "unifieddyes:" .. hue,
+                "unifieddyes:white_paint",
+	        },
+	})
+
 	minetest.register_craftitem("unifieddyes:dark_" .. hue .. "_s50", {
 		description = "Dark " .. hue .. " (low saturation)",
 		inventory_image = "unifieddyes_dark_" .. hue .. "_s50.png",
@@ -411,17 +420,23 @@ for i = 1, 12 do
 	})
 
 	minetest.register_craftitem("unifieddyes:" .. hue .. "_s50", {
-		description = "Bright " .. hue .. " (low saturation)",
+		description = "Full " .. hue .. " (low saturation)",
 		inventory_image = "unifieddyes_" .. hue .. "_s50.png",
 		groups = {dye=1},
 	})
 
 	minetest.register_craftitem("unifieddyes:" .. hue, {
-		description = "Bright " .. hue,
+		description = "Full " .. hue,
 		inventory_image = "unifieddyes_" .. hue .. ".png",
 		groups = {dye=1},
 	})
 
+	minetest.register_craftitem("unifieddyes:light_" .. hue, {
+		description = "Light " .. hue,
+		inventory_image = "unifieddyes_light_" .. hue .. ".png",
+		groups = {dye=1},
+	})
+
 end