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<td class='lines'><pre><code><span class="hl slc">#!/bin/bash</span>

<span class="hl slc"># This script generates normalmaps using The GIMP to do the heavy lifting.</span>
<span class="hl slc"># give any unrecognized switch (say, -h) for usage info.</span>

<span class="hl kwc">rm</span> <span class="hl opt">/</span>tmp<span class="hl opt">/</span>normals_filelist.txt

numprocs<span class="hl opt">=</span><span class="hl num">6</span>

skiptools<span class="hl opt">=</span>false
skipinventory<span class="hl opt">=</span>false
invresolution<span class="hl opt">=</span><span class="hl num">64</span>
dryrun<span class="hl opt">=</span>false
pattern<span class="hl opt">=</span><span class="hl str">&quot;*.png *.jpg&quot;</span>

filter<span class="hl opt">=</span><span class="hl num">0</span>
scale<span class="hl opt">=</span><span class="hl num">8</span>
wrap<span class="hl opt">=</span><span class="hl num">0</span>
heightsource<span class="hl opt">=</span><span class="hl num">0</span>
conversion<span class="hl opt">=</span><span class="hl num">0</span>
invertx<span class="hl opt">=</span><span class="hl num">0</span>
inverty<span class="hl opt">=</span><span class="hl num">0</span>

<span class="hl kwa">while</span> <span class="hl kwb">test -n</span> <span class="hl str">&quot;</span><span class="hl ipl">$1</span><span class="hl str">&quot;</span><span class="hl opt">;</span> <span class="hl kwa">do</span>
	<span class="hl kwa">case</span> <span class="hl str">&quot;</span><span class="hl ipl">$1</span><span class="hl str">&quot;</span> <span class="hl kwa">in</span>
		<span class="hl kwb">--scale</span>|<span class="hl kwb">-s</span><span class="hl opt">)</span>
			<span class="hl kwa">if</span> <span class="hl opt">[</span> <span class="hl kwb">-z</span> <span class="hl str">&quot;</span><span class="hl ipl">$2</span><span class="hl str">&quot;</span> <span class="hl opt">] ;</span> <span class="hl kwa">then</span> <span class="hl kwb">echo</span> <span class="hl str">&quot;Missing scale parameter&quot;</span><span class="hl opt">;</span> <span class="hl kwb">exit</span> <span class="hl num">1</span><span class="hl opt">;</span> <span class="hl kwa">fi</span>
			scale<span class="hl opt">=</span><span class="hl kwd">$2</span>
			<span class="hl kwb">shift</span>
			<span class="hl kwb">shift</span>
			<span class="hl opt">;;</span>
		<span class="hl kwb">--pattern</span>|<span class="hl kwb">-p</span><span class="hl opt">)</span>
			<span class="hl kwa">if</span> <span class="hl opt">[</span> <span class="hl kwb">-z</span> <span class="hl str">&quot;</span><span class="hl ipl">$2</span><span class="hl str">&quot;</span> <span class="hl opt">] ;</span> <span class="hl kwa">then</span> <span class="hl kwb">echo</span> <span class="hl str">&quot;Missing pattern parameter&quot;</span><span class="hl opt">;</span> <span class="hl kwb">exit</span> <span class="hl num">1</span><span class="hl opt">;</span> <span class="hl kwa">fi</span>
			pattern<span class="hl opt">=</span><span class="hl kwd">$2</span>
			<span class="hl kwb">shift</span>
			<span class="hl kwb">shift</span>
			<span class="hl opt">;;</span>
		<span class="hl kwb">--skiptools</span>|<span class="hl kwb">-t</span><span class="hl opt">)</span>
			skiptools<span class="hl opt">=</span>true
			<span class="hl kwb">shift</span>
			<span class="hl opt">;;</span>
		<span class="hl kwb">--skipinventory</span>|<span class="hl kwb">-i</span><span class="hl opt">)</span>
			<span class="hl kwa">if</span> <span class="hl opt">[[</span> <span class="hl kwd">$2</span> <span class="hl opt">=</span>~ ^<span class="hl opt">[</span><span class="hl num">0</span><span class="hl kwb">-9</span><span class="hl opt">]+</span>$ <span class="hl opt">]];</span> <span class="hl kwa">then</span>
				invresolution<span class="hl opt">=</span><span class="hl kwd">$2</span>
				<span class="hl kwb">shift</span>
			<span class="hl kwa">fi</span>
			skipinventory<span class="hl opt">=</span>true
			<span class="hl kwb">shift</span>
			<span class="hl opt">;;</span>
		<span class="hl kwb">--filter</span>|<span class="hl kwb">-f</span><span class="hl opt">)</span>
			<span class="hl kwa">if</span> <span class="hl opt">[</span> <span class="hl kwb">-z</span> <span class="hl str">&quot;</span><span class="hl ipl">$2</span><span class="hl str">&quot;</span> <span class="hl opt">] ;</span> <span class="hl kwa">then</span> <span class="hl kwb">echo</span> <span class="hl str">&quot;Missing filter parameter&quot;</span><span class="hl opt">;</span> <span class="hl kwb">exit</span> <span class="hl num">1</span><span class="hl opt">;</span> <span class="hl kwa">fi</span>

			<span class="hl kwa">case</span> <span class="hl str">&quot;</span><span class="hl ipl">$2</span><span class="hl str">&quot;</span> <span class="hl kwa">in</span>
				sobel3|<span class="hl num">1</span><span class="hl opt">)</span>
					filter<span class="hl opt">=</span><span class="hl num">1</span>
					<span class="hl opt">;;</span>
				sobel5|<span class="hl num">2</span><span class="hl opt">)</span>
					filter<span class="hl opt">=</span><span class="hl num">2</span>
					<span class="hl opt">;;</span>
				prewitt3|<span class="hl num">3</span><span class="hl opt">)</span>
					filter<span class="hl opt">=</span><span class="hl num">3</span>
					<span class="hl opt">;;</span>
				prewitt5|<span class="hl num">4</span><span class="hl opt">)</span>
					filter<span class="hl opt">=</span><span class="hl num">4</span>
					<span class="hl opt">;;</span>
				<span class="hl num">3</span>x3|<span class="hl num">5</span><span class="hl opt">)</span>
					filter<span class="hl opt">=</span><span class="hl num">5</span>
					<span class="hl opt">;;</span>
				<span class="hl num">5</span>x5|<span class="hl num">6</span><span class="hl opt">)</span>
					filter<span class="hl opt">=</span><span class="hl num">6</span>
					<span class="hl opt">;;</span>
				<span class="hl num">7</span>x7|<span class="hl num">7</span><span class="hl opt">)</span>
					filter<span class="hl opt">=</span><span class="hl num">7</span>
					<span class="hl opt">;;</span>
				<span class="hl num">9</span>x9|<span class="hl num">8</span><span class="hl opt">)</span>
					filter<span class="hl opt">=</span><span class="hl num">8</span>
					<span class="hl opt">;;</span>
				<span class="hl opt">*)</span>
					filter<span class="hl opt">=</span><span class="hl num">0</span>
					<span class="hl opt">;;</span>
			<span class="hl kwa">esac</span>

			<span class="hl kwb">shift</span>
			<span class="hl kwb">shift</span>
			<span class="hl opt">;;</span>
		<span class="hl kwb">--heightalpha</span>|<span class="hl kwb">-a</span><span class="hl opt">)</span>
			heightsource<span class="hl opt">=</span><span class="hl num">1</span>
			<span class="hl kwb">shift</span>
			<span class="hl opt">;;</span>
		<span class="hl kwb">--conversion</span>|<span class="hl kwb">-c</span><span class="hl opt">)</span>
				<span class="hl kwa">if</span> <span class="hl opt">[</span> <span class="hl kwb">-z</span> <span class="hl str">&quot;</span><span class="hl ipl">$2</span><span class="hl str">&quot;</span> <span class="hl opt">] ;</span> <span class="hl kwa">then</span> <span class="hl kwb">echo</span> <span class="hl str">&quot;Missing conversion parameter&quot;</span><span class="hl opt">;</span> <span class="hl kwb">exit</span> <span class="hl num">1</span><span class="hl opt">;</span> <span class="hl kwa">fi</span>

				<span class="hl kwa">case</span> <span class="hl str">&quot;</span><span class="hl ipl">$2</span><span class="hl str">&quot;</span> <span class="hl kwa">in</span>
					biased|<span class="hl num">1</span><span class="hl opt">)</span>
						conversion<span class="hl opt">=</span><span class="hl num">1</span>
						<span class="hl opt">;;</span>
					red|<span class="hl num">2</span><span class="hl opt">)</span>
						conversion<span class="hl opt">=</span><span class="hl num">2</span>
						<span class="hl opt">;;</span>
					green|<span class="hl num">3</span><span class="hl opt">)</span>
						conversion<span class="hl opt">=</span><span class="hl num">3</span>
						<span class="hl opt">;;</span>
					blue|<span class="hl num">4</span><span class="hl opt">)</span>
						conversion<span class="hl opt">=</span><span class="hl num">4</span>
						<span class="hl opt">;;</span>
					maxrgb|<span class="hl num">5</span><span class="hl opt">)</span>
						conversion<span class="hl opt">=</span><span class="hl num">5</span>
						<span class="hl opt">;;</span>
					minrgb|<span class="hl num">6</span><span class="hl opt">)</span>
						conversion<span class="hl opt">=</span><span class="hl num">6</span>
						<span class="hl opt">;;</span>
					colorspace|<span class="hl num">7</span><span class="hl opt">)</span>
						conversion<span class="hl opt">=</span><span class="hl num">7</span>
						<span class="hl opt">;;</span>
					normalize-only|<span class="hl num">8</span><span class="hl opt">)</span>
						conversion<span class="hl opt">=</span><span class="hl num">8</span>
						<span class="hl opt">;;</span>
					heightmap|<span class="hl num">9</span><span class="hl opt">)</span>
						conversion<span class="hl opt">=</span><span class="hl num">9</span>
						<span class="hl opt">;;</span>
					<span class="hl opt">*)</span>
						conversion<span class="hl opt">=</span><span class="hl num">0</span>
						<span class="hl opt">;;</span>
			<span class="hl kwa">esac</span>

			<span class="hl kwb">shift</span>
			<span class="hl kwb">shift</span>
			<span class="hl opt">;;</span>
		<span class="hl kwb">--wrap</span>|<span class="hl kwb">-w</span><span class="hl opt">)</span>
			wrap<span class="hl opt">=</span><span class="hl num">1</span>
			<span class="hl kwb">shift</span>
			<span class="hl opt">;;</span>
		<span class="hl kwb">--invertx</span>|<span class="hl kwb">-x</span><span class="hl opt">)</span>
			invertx<span class="hl opt">=</span><span class="hl num">1</span>
			<span class="hl kwb">shift</span>
			<span class="hl opt">;;</span>
		<span class="hl kwb">--inverty</span>|<span class="hl kwb">-y</span><span class="hl opt">)</span>
			inverty<span class="hl opt">=</span><span class="hl num">1</span>
			<span class="hl kwb">shift</span>
			<span class="hl opt">;;</span>
		<span class="hl kwb">--dryrun</span>|<span class="hl kwb">-d</span><span class="hl opt">)</span>
			dryrun<span class="hl opt">=</span>true
			<span class="hl kwb">shift</span>
			<span class="hl opt">;;</span>
		<span class="hl opt">*)</span>
			<span class="hl kwb">echo -e</span> <span class="hl str">&quot;</span><span class="hl esc">\n</span><span class="hl str">Usage:</span><span class="hl esc">\n</span><span class="hl str">&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;`basename</span> <span class="hl ipl">$0</span><span class="hl str">` [--scale|-s &lt;value&gt;] [--filter|-f &lt;string&gt;]&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot; [--wrap|-w] [--heightalpha|-a] [--invertx|-x] [--inverty|-y]&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot; [--conversion|-c &lt;string&gt;] [--skiptools|-t] [--skipinventory|-i [&lt;value&gt;]]&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot; [--dryrun|-d] [--pattern|-p &lt;pattern&gt;]&quot;</span>
			<span class="hl kwb">echo -e</span> <span class="hl str">&quot;</span><span class="hl esc">\n</span><span class="hl str">Defaults to a scale of 8, checking all files in the current directory, and not&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;skipping apparent tools or inventory images.  Filter, if specified, may be one&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;of: sobel3, sobel5, prewitt3, prewitt5, 3x3, 5x5, 7x7, or 9x9, or a value 1&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;through 8 (1=sobel3, 2=sobel5, etc.). Defaults to 0 (four-sample).  The height&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;source is taken from the image&apos;s alpha channel if heightalpha is specified.</span><span class="hl esc">\n</span><span class="hl str">&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;If inventory skip is specified, an optional resolution may also be included&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;(default is 64).  Conversion can be one of: biased, red, green, blue, maxrgb,&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;minrgb, colorspace, normalize-only, heightmap or a value from 1 to 9&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;corresponding respectively to those keywords.  Defaults to 0 (simple&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;normalize) if not specified.  Wrap, if specified, enables wrapping of the&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;normalmap around the edges of the texture (defaults to no).  Invert X/Y&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;reverses the calculated gradients  for the X and/or Y dimensions represented&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;by the normalmap (both default to non-inverted).&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;The pattern, can be an escaped pattern string such as \*apple\* or&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;default_\*.png or similar (defaults to all PNG and JPG images in the current&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;directory that do not contain</span> <span class="hl esc">\&quot;</span><span class="hl str">_normal</span><span class="hl esc">\&quot;</span> <span class="hl str">or</span> <span class="hl esc">\&quot;</span><span class="hl str">_specular</span><span class="hl esc">\&quot;</span> <span class="hl str">in their filenames).&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;If set for dry-run, the actions this script will take will be printed, but no&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;images will be generated.  Passing an invalid value to a switch will generally&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;cause that switch to revert to its default value.&quot;</span>
			<span class="hl kwb">echo</span> <span class="hl str">&quot;&quot;</span>
			<span class="hl kwb">exit</span> <span class="hl num">1</span>
			<span class="hl opt">;;</span>
	<span class="hl kwa">esac</span>
<span class="hl kwa">done</span>

<span class="hl kwb">echo -e</span> <span class="hl str">&quot;</span><span class="hl esc">\n</span><span class="hl str">Processing files based on pattern</span> <span class="hl esc">\&quot;</span><span class="hl str"></span><span class="hl ipl">$pattern</span><span class="hl str"></span><span class="hl esc">\&quot;</span> <span class="hl str">...&quot;</span>

normalMap<span class="hl opt">()</span>
<span class="hl opt">{</span>
	out<span class="hl opt">=</span><span class="hl str">`echo &quot;</span><span class="hl ipl">$1</span><span class="hl str">&quot; | sed &apos;s/.png/_normal.png/&apos; | sed &apos;s/.jpg/_normal.png/&apos;`</span>

	<span class="hl kwb">echo</span> <span class="hl str">&quot;Launched process to generate normalmap:</span> <span class="hl esc">\&quot;</span><span class="hl str"></span><span class="hl ipl">$1</span><span class="hl str"></span><span class="hl esc">\&quot;</span> <span class="hl str">--&gt;</span> <span class="hl esc">\&quot;</span><span class="hl str"></span><span class="hl ipl">$out</span><span class="hl str"></span><span class="hl esc">\&quot;</span><span class="hl str">&quot;</span> <span class="hl opt">&gt;&amp;</span><span class="hl num">2</span>

	gimp <span class="hl kwb">-i -b</span> <span class="hl str">&quot;</span>
<span class="hl str">		(define</span>
<span class="hl str">			(normalMap-fbx-conversion fileName newFileName filter nscale wrap heightsource conversion invertx inverty)</span>
<span class="hl str">			(let*</span>
<span class="hl str">				(</span>
<span class="hl str">					(image (car (gimp-file-load RUN-NONINTERACTIVE fileName fileName)))</span>
<span class="hl str">					(drawable (car (gimp-image-get-active-layer image)))</span>
<span class="hl str">					(drawable (car (gimp-image-flatten image)))</span>
<span class="hl str">				)</span>
<span class="hl str">				(if (&gt; (car (gimp-drawable-type drawable)) 1)</span>
<span class="hl str">					(gimp-convert-rgb image) ()</span>
<span class="hl str">				)</span>
<span class="hl str"></span>
<span class="hl str">				(plug-in-normalmap </span>
<span class="hl str">					RUN-NONINTERACTIVE</span>
<span class="hl str">					image</span>
<span class="hl str">					drawable</span>
<span class="hl str">					filter</span>
<span class="hl str">					0.0</span>
<span class="hl str">					nscale</span>
<span class="hl str">					wrap</span>
<span class="hl str">					heightsource</span>
<span class="hl str">					0</span>
<span class="hl str">					conversion</span>
<span class="hl str">					0</span>
<span class="hl str">					invertx</span>
<span class="hl str">					inverty</span>
<span class="hl str">					0</span>
<span class="hl str">					0.0</span>
<span class="hl str">					drawable)</span>
<span class="hl str">				(gimp-file-save RUN-NONINTERACTIVE image drawable newFileName newFileName)</span>
<span class="hl str">				(gimp-image-delete image)</span>
<span class="hl str">			)</span>
<span class="hl str">		)</span>
<span class="hl str">		(normalMap-fbx-conversion</span> <span class="hl esc">\&quot;</span><span class="hl str"></span><span class="hl ipl">$1</span><span class="hl str"></span><span class="hl esc">\&quot; \&quot;</span><span class="hl str"></span><span class="hl ipl">$out</span><span class="hl str"></span><span class="hl esc">\&quot;</span> <span class="hl str"></span><span class="hl ipl">$2</span> <span class="hl str"></span><span class="hl ipl">$3</span> <span class="hl str"></span><span class="hl ipl">$4</span> <span class="hl str"></span><span class="hl ipl">$5</span> <span class="hl str"></span><span class="hl ipl">$6</span> <span class="hl str"></span><span class="hl ipl">$7</span> <span class="hl str"></span><span class="hl ipl">$8</span><span class="hl str">)&quot;</span> <span class="hl kwb">-b</span> <span class="hl str">&apos;(gimp-quit 0)&apos;</span>
<span class="hl opt">}</span>

<span class="hl kwb">export -f</span> normalMap

<span class="hl kwa">for</span> <span class="hl kwc">file</span> <span class="hl kwa">in</span> <span class="hl str">`ls</span> <span class="hl ipl">$pattern</span> <span class="hl str">|grep -v &quot;_normal.png&quot;|grep -v &quot;_specular&quot;`</span> <span class="hl opt">;</span> <span class="hl kwa">do</span>

	invtest<span class="hl opt">=</span><span class="hl str">`file &quot;</span><span class="hl ipl">$file</span><span class="hl str">&quot; |grep &quot;</span><span class="hl ipl">$invresolution</span> <span class="hl str">x</span> <span class="hl ipl">$invresolution</span><span class="hl str">&quot;`</span>
	<span class="hl kwa">if</span> <span class="hl kwd">$skipinventory</span> <span class="hl opt">&amp;&amp; [</span> <span class="hl kwb">-n</span> <span class="hl str">&quot;</span><span class="hl ipl">$invtest</span><span class="hl str">&quot;</span> <span class="hl opt">] ;</span> <span class="hl kwa">then</span>
		<span class="hl kwb">echo</span> <span class="hl str">&quot;Skipped presumed &quot;</span><span class="hl kwd">$invresolution</span><span class="hl str">&quot;px inventory image:</span> <span class="hl ipl">$file</span><span class="hl str">&quot;</span> <span class="hl opt">&gt;&amp;</span><span class="hl num">2</span>
		<span class="hl kwb">continue</span>
	<span class="hl kwa">fi</span>

	tooltest<span class="hl opt">=</span><span class="hl str">`echo &quot;</span><span class="hl ipl">$file</span><span class="hl str">&quot; \</span>
<span class="hl str">		| grep -v &quot;_tool&quot; \</span>
<span class="hl str">		| grep -v &quot;_shovel&quot; \</span>
<span class="hl str">		| grep -v &quot;_pick&quot; \</span>
<span class="hl str">		| grep -v &quot;_axe&quot; \</span>
<span class="hl str">		| grep -v &quot;_sword&quot; \</span>
<span class="hl str">		| grep -v &quot;_hoe&quot; \</span>
<span class="hl str">		| grep -v &quot;bucket_&quot;`</span>

	<span class="hl kwa">if</span> <span class="hl kwd">$skiptools</span> <span class="hl opt">&amp;&amp; [</span> <span class="hl kwb">-z</span> <span class="hl str">&quot;</span><span class="hl ipl">$tooltest</span><span class="hl str">&quot;</span> <span class="hl opt">] ;</span> <span class="hl kwa">then</span>
		<span class="hl kwb">echo</span> <span class="hl str">&quot;Skipped presumed tool image:</span> <span class="hl ipl">$file</span><span class="hl str">&quot;</span> <span class="hl opt">&gt;&amp;</span><span class="hl num">2</span>
		<span class="hl kwb">continue</span>
	<span class="hl kwa">fi</span>

	<span class="hl kwa">if</span> <span class="hl kwd">$dryrun</span> <span class="hl opt">;</span> <span class="hl kwa">then</span>
		<span class="hl kwb">echo</span> <span class="hl str">&quot;Would have generated a normalmap for</span> <span class="hl ipl">$file</span><span class="hl str">&quot;</span> <span class="hl opt">&gt;&amp;</span><span class="hl num">2</span>
		<span class="hl kwb">continue</span>
	<span class="hl kwa">else</span>
		<span class="hl kwb">echo</span> <span class="hl esc">\&quot;</span><span class="hl kwd">$file</span><span class="hl esc">\&quot;</span> <span class="hl kwd">$filter $scale $wrap $heightsource $conversion $invertx $inverty</span>
	<span class="hl kwa">fi</span>
<span class="hl kwa">done</span> | <span class="hl kwc">xargs</span> <span class="hl kwb">-P</span> <span class="hl kwd">$numprocs</span> <span class="hl kwb">-n</span> <span class="hl num">8</span> <span class="hl kwb">-I</span><span class="hl opt">{}</span> bash <span class="hl kwb">-c</span> normalMap\ \<span class="hl opt">{</span>\<span class="hl opt">}</span>\ \<span class="hl opt">{</span>\<span class="hl opt">}</span>\ \<span class="hl opt">{</span>\<span class="hl opt">}</span>\ \<span class="hl opt">{</span>\<span class="hl opt">}</span>\ \<span class="hl opt">{</span>\<span class="hl opt">}</span>\ \<span class="hl opt">{</span>\<span class="hl opt">}</span>\ \<span class="hl opt">{</span>\<span class="hl opt">}</span>\ \<span class="hl opt">{</span>\<span class="hl opt">}</span>

</code></pre></td></tr></table>
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