1 files changed, 111 insertions, 0 deletions
diff --git a/font_api/tools/make_font_textures.sh b/font_api/tools/make_font_textures.sh
new file mode 100755
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+++ b/font_api/tools/make_font_textures.sh
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+#!/bin/bash
+
+# This program generates a bitmap font for font_api mod for Minetest game.
+# (c) Andrzej Pieńkowski <pienkowski.andrzej@gmail.com>
+# (c) Pierre-Yves Rollo <dev@pyrollo.com>
+# License: GPL
+
+usage() {
+	echo "Usage: $0 fontfile fontname fontsize"
+	echo "fontfile: A TTF font file to use to create textures."
+	echo "fontname: The font name to be used in font_api (should be simple, with no spaces)."
+	echo "fontsize: Font height to be rendered."
+}
+
+if [ $# -ne 3 ] 
+then
+	usage
+	exit 1
+fi
+
+fontfile=$1
+fontname=$2
+fontsize=$3
+
+if [ ! -r "$fontfile" ]
+then
+	echo "$fontfile not readable."
+	exit 1
+fi
+
+# check imagemagick
+hash convert &>/dev/null
+if [ $? -eq 1 ]; then
+	echo -e "Error: This program requires convert from ImageMagick! Please install it by typing 'sudo apt-get install imagemagick' in terminal."
+	abort=1
+fi
+
+# check ttx
+hash ttx &>/dev/null
+if [ $? -eq 1 ]; then
+	echo -e "Error: This program requires ttx from FontTools! Please install it by typing 'sudo apt-get install fonttools' in terminal."
+	abort=1
+fi
+
+if [ $abort ]
+then
+	exit 1
+fi
+
+generate() {
+	for i in $(seq $((0x$1)) $((0x$2)))
+	do
+		if echo "$codepoints" | grep -qi $(printf "0x%x" $i)
+		then
+		    hex=$(printf "%04x" $i)
+		    echo -e "Generating textures/font_${fontname}_$hex.png file for \"\\U$hex\" char."
+            if [[ "$hex" == "005c" ]] # Backslash char
+            then
+    			convert -background none -fill black -font "$fontfile" -pointsize $fontsize label:"\\\\" -colorspace gray -channel alpha -threshold 50% textures/font_${fontname}_$hex.png
+            else
+    			convert -background none -fill black -font "$fontfile" -pointsize $fontsize label:"$(echo -en "\\U$hex")" -colorspace gray -channel alpha -threshold 50% textures/font_${fontname}_$hex.png
+            fi
+ 		fi
+	done
+}
+
+mkdir textures
+
+# Reads all available code points in the font.
+codepoints=$(ttx -o - "$fontfile" | grep "<map code=" | cut -d \" -f 2)
+
+# Mandatory chars
+generate 0020 007f
+
+# generate space and null characters
+if [ ! -f "textures/font_${fontname}_0030.png" ]; then
+	echo "Error: Something wrong happened! Font was not generated!"
+	exit 1
+else
+	size=$(identify textures/font_${fontname}_0030.png | cut -d " " -f 3)
+	if ! [[ $fontHeight =~ $re ]] ; then
+		echo "Error: Something wrong happened! Generated files might be broken!"
+		exit 1
+	else
+        w=$(expr $(echo $size | cut -d x -f 1) - 1)
+        h=$(expr $(echo $size | cut -d x -f 2) - 1)
+        # Space char
+		convert -size $size xc:transparent -colorspace gray textures/font_${fontname}_0020.png
+        # Null char		
+        convert -size $size xc:transparent -colorspace gray -stroke black -fill transparent -strokewidth 1 -draw "rectangle 0,0 $w,$h" textures/font_${fontname}_0000.png
+	fi
+fi
+
+# Optional Unicode pages (see https://en.wikipedia.org/wiki/Unicode) :
+
+# 00a0-00ff Latin-1 Supplement (full)
+generate 00a0 00ff
+# 0100-017f Latin Extended-A (full)
+generate 0100 017f
+# 0370-03ff Greek (full)
+generate 0370 03ff
+# 0400-04ff Cyrilic (full)
+generate 0400 04ff
+# 2000-206f General Punctuation (Limited to Dashes)
+generate 2010 2015
+# 2000-206f General Punctuation (Limited to Quotes)
+generate 2018 201F
+# 20a0-20cf Currency Symbols (Limited to Euro symbol)
+generate 20ac 20ac
+
+