#!/bin/bash # This script generates normalmaps using The GIMP to do the heavy lifting. # give any unrecognized switch (say, -h) for usage info. rm /tmp/normals_filelist.txt numprocs=6 skiptools=false skipinventory=false invresolution=64 dryrun=false pattern="*.png *.jpg" filter=0 scale=8 wrap=0 heightsource=0 conversion=0 invertx=0 inverty=0 while test -n "$1"; do case "$1" in --scale|-s) if [ -z "$2" ] ; then echo "Missing scale parameter"; exit 1; fi scale=$2 shift shift ;; --pattern|-p) if [ -z "$2" ] ; then echo "Missing pattern parameter"; exit 1; fi pattern=$2 shift shift ;; --skiptools|-t) skiptools=true shift ;; --skipinventory|-i) if [[ $2 =~ ^[0-9]+$ ]]; then invresolution=$2 shift fi skipinventory=true shift ;; --filter|-f) if [ -z "$2" ] ; then echo "Missing filter parameter"; exit 1; fi case "$2" in sobel3|1) filter=1 ;; sobel5|2) filter=2 ;; prewitt3|3) filter=3 ;; prewitt5|4) filter=4 ;; 3x3|5) filter=5 ;; 5x5|6) filter=6 ;; 7x7|7) filter=7 ;; 9x9|8) filter=8 ;; *) filter=0 ;; esac shift shift ;; --heightalpha|-a) heightsource=1 shift ;; --conversion|-c) if [ -z "$2" ] ; then echo "Missing conversion parameter"; exit 1; fi case "$2" in biased|1) conversion=1 ;; red|2) conversion=2 ;; green|3) conversion=3 ;; blue|4) conversion=4 ;; maxrgb|5) conversion=5 ;; minrgb|6) conversion=6 ;; colorspace|7) conversion=7 ;; normalize-only|8) conversion=8 ;; heightmap|9) conversion=9 ;; *) conversion=0 ;; esac shift shift ;; --wrap|-w) wrap=1 shift ;; --invertx|-x) invertx=1 shift ;; --inverty|-y) inverty=1 shift ;; --dryrun|-d) dryrun=true shift ;; *) echo -e "\nUsage:\n" echo "`basename $0` [--scale|-s <value>] [--filter|-f <string>]" echo " [--wrap|-w] [--heightalpha|-a] [--invertx|-x] [--inverty|-y]" echo " [--conversion|-c <string>] [--skiptools|-t] [--skipinventory|-i [<value>]]" echo " [--dryrun|-d] [--pattern|-p <pattern>]" echo -e "\nDefaults to a scale of 8, checking all files in the current directory, and not" echo "skipping apparent tools or inventory images. Filter, if specified, may be one" echo "of: sobel3, sobel5, prewitt3, prewitt5, 3x3, 5x5, 7x7, or 9x9, or a value 1" echo "through 8 (1=sobel3, 2=sobel5, etc.). Defaults to 0 (four-sample). The height" echo "source is taken from the image's alpha channel if heightalpha is specified.\n" echo "" echo "If inventory skip is specified, an optional resolution may also be included" echo "(default is 64). Conversion can be one of: biased, red, green, blue, maxrgb," echo "minrgb, colorspace, normalize-only, heightmap or a value from 1 to 9" echo "corresponding respectively to those keywords. Defaults to 0 (simple" echo "normalize) if not specified. Wrap, if specified, enables wrapping of the" echo "normalmap around the edges of the texture (defaults to no). Invert X/Y" echo "reverses the calculated gradients for the X and/or Y dimensions represented" echo "by the normalmap (both default to non-inverted)." echo "" echo "The pattern, can be an escaped pattern string such as \*apple\* or" echo "default_\*.png or similar (defaults to all PNG and JPG images in the current" echo "directory that do not contain \"_normal\" or \"_specular\" in their filenames)." echo "" echo "If set for dry-run, the actions this script will take will be printed, but no" echo "images will be generated. Passing an invalid value to a switch will generally" echo "cause that switch to revert to its default value." echo "" exit 1 ;; esac done echo -e "\nProcessing files based on pattern \"$pattern\" ..." normalMap() { out=`echo "$1" | sed 's/.png/_normal.png/' | sed 's/.jpg/_normal.png/'` echo "Launched process to generate normalmap: \"$1\" --> \"$out\"" >&2 gimp -i -b " (define (normalMap-fbx-conversion fileName newFileName filter nscale wrap heightsource conversion invertx inverty) (let* ( (image (car (gimp-file-load RUN-NONINTERACTIVE fileName fileName))) (drawable (car (gimp-image-get-active-layer image))) (drawable (car (gimp-image-flatten image))) ) (if (> (car (gimp-drawable-type drawable)) 1) (gimp-convert-rgb image) () ) (plug-in-normalmap RUN-NONINTERACTIVE image drawable filter 0.0 nscale wrap heightsource 0 conversion 0 invertx inverty 0 0.0 drawable) (gimp-file-save RUN-NONINTERACTIVE image drawable newFileName newFileName) (gimp-image-delete image) ) ) (normalMap-fbx-conversion \"$1\" \"$out\" $2 $3 $4 $5 $6 $7 $8)" -b '(gimp-quit 0)' } export -f normalMap for file in `ls $pattern |grep -v "_normal.png"|grep -v "_specular"` ; do invtest=`file "$file" |grep "$invresolution x $invresolution"` if $skipinventory && [ -n "$invtest" ] ; then echo "Skipped presumed "$invresolution"px inventory image: $file" >&2 continue fi tooltest=`echo "$file" \ | grep -v "_tool" \ | grep -v "_shovel" \ | grep -v "_pick" \ | grep -v "_axe" \ | grep -v "_sword" \ | grep -v "_hoe" \ | grep -v "bucket_"` if $skiptools && [ -z "$tooltest" ] ; then echo "Skipped presumed tool image: $file" >&2 continue fi if $dryrun ; then echo "Would have generated a normalmap for $file" >&2 continue else echo \"$file\" $filter $scale $wrap $heightsource $conversion $invertx $inverty fi done | xargs -P $numprocs -n 8 -I{} bash -c normalMap\ \{\}\ \{\}\ \{\}\ \{\}\ \{\}\ \{\}\ \{\}\ \{\}