--- ray/src/px/falsecolor.csh	2003/02/22 02:07:27	2.8
+++ ray/src/px/falsecolor.csh	2006/11/13 02:41:46	2.16
@@ -1,17 +1,19 @@
 #!/bin/csh -fe
-# RCSid: $Id: falsecolor.csh,v 2.8 2003/02/22 02:07:27 greg Exp $
+# RCSid: $Id: falsecolor.csh,v 2.16 2006/11/13 02:41:46 greg Exp $
 #
 # Create false color image with legend
 #
-set td=/usr/tmp/fc$$
+# Added user-definable legend 2004/01/20 Rob Guglielmetti
+
+set td=/tmp/fc$$
 onintr quit
 set mult=179
 set label=Nits
 set scale=1000
 set decades=0
-set redv='1.6*v-.6'
-set grnv='if(v-.375,1.6-1.6*v,8/3*v)'
-set bluv='1-8/3*v'
+set redv='def_red(v)'
+set grnv='def_grn(v)'
+set bluv='def_blu(v)'
 set ndivs=8
 set picture='-'
 set cpict=
@@ -20,6 +22,14 @@ set legwidth=100
 set legheight=200
 while ($#argv > 0)
 	switch ($argv[1])
+	case -lw:
+		shift argv
+		set legwidth="$argv[1]"
+		breaksw
+	case -lh:
+		shift argv
+		set legheight="$argv[1]"
+		breaksw
 	case -m:
 		shift argv
 		set mult="$argv[1]"
@@ -27,6 +37,7 @@ while ($#argv > 0)
 	case -s:
 		shift argv
 		set scale="$argv[1]"
+		if ("$scale" =~ [aA]*) set needfile
 		breaksw
 	case -l:
 		shift argv
@@ -48,6 +59,12 @@ while ($#argv > 0)
 		shift argv
 		set bluv="$argv[1]"
 		breaksw
+	case -spec:
+		shift argv
+		set redv='1.6*v-.6'
+		set grnv='if(v-.375,1.6-1.6*v,8/3*v)'
+		set bluv='1-8/3*v'
+		breaksw
 	case -i:
 		shift argv
 		set picture="$argv[1]"
@@ -79,12 +96,20 @@ while ($#argv > 0)
 		set ndivs="$argv[1]"
 		breaksw
 	default:
-		echo bad option "'$argv[1]'" >/dev/tty
+		echo bad option "'$argv[1]'"
 		exit 1
 	endsw
 	shift argv
 end
 mkdir $td
+if ($?needfile && "$picture" == '-') then
+	cat > $td/picture
+	set picture=$td/picture
+endif
+if ("$scale" =~ [aA]*) then
+	set LogLmax=`phisto $picture | tail -2 | sed -n '1s/	[0-9]*$//p'`
+	set scale=`ev "$mult/179*10^$LogLmax"`
+endif
 cat > $td/pc0.cal <<_EOF_
 PI : 3.14159265358979323846 ;
 scale : $scale ;
@@ -99,18 +124,39 @@ clip(x) : if(x-1,1,if(x,x,0));
 frac(x) : x - floor(x);
 boundary(a,b) : neq(floor(ndivs*a+.5),floor(ndivs*b+.5));
 
+interp_arr2(i,x,f):(i+1-x)*f(i)+(x-i)*f(i+1);
+interp_arr(x,f):if(x-1,if(f(0)-x,interp_arr2(floor(x),x,f),f(f(0))),f(1));
+def_redp(i):select(i,0.18848,0.05468174,
+0.00103547,8.311144e-08,7.449763e-06,0.0004390987,0.001367254,
+0.003076,0.01376382,0.06170773,0.1739422,0.2881156,0.3299725,
+0.3552663,0.372552,0.3921184,0.4363976,0.6102754,0.7757267,
+0.9087369,1,1,0.9863);
+def_red(x):interp_arr(x/0.0454545+1,def_redp);
+def_grnp(i):select(i,0.0009766,2.35501e-05,
+0.0008966244,0.0264977,0.1256843,0.2865799,0.4247083,0.4739468,
+0.4402732,0.3671876,0.2629843,0.1725325,0.1206819,0.07316644,
+0.03761026,0.01612362,0.004773749,6.830967e-06,0.00803605,
+0.1008085,0.3106831,0.6447838,0.9707);
+def_grn(x):interp_arr(x/0.0454545+1,def_grnp);
+def_blup(i):select(i,0.2666,0.3638662,0.4770437,
+0.5131397,0.5363797,0.5193677,0.4085123,0.1702815,0.05314236,
+0.05194055,0.08564082,0.09881395,0.08324373,0.06072902,
+0.0391076,0.02315354,0.01284458,0.005184709,0.001691774,
+2.432735e-05,1.212949e-05,0.006659406,0.02539);
+def_blu(x):interp_arr(x/0.0454545+1,def_blup);
+
 isconta = if(btwn(0,v,1),or(boundary(vleft,vright),boundary(vabove,vbelow)),-1);
 iscontb = if(btwn(0,v,1),btwn(.4,frac(ndivs*v),.6),-1); 
 
-ro = if(in,clip($redv),ra);
-go = if(in,clip($grnv),ga);
-bo = if(in,clip($bluv),ba);
-
 ra = 0;
 ga = 0;
 ba = 0;
 
 in = 1;
+
+ro = if(in,clip($redv),ra);
+go = if(in,clip($grnv),ga);
+bo = if(in,clip($bluv),ba);
 _EOF_
 cat > $td/pc1.cal <<_EOF_
 norm : mult/scale/le(1);
@@ -138,24 +184,27 @@ if ("$cpict" == "") then
 else if ("$cpict" == "$picture") then
 	set cpict=
 endif
-if ($?needfile && "$picture" == '-') then
-	cat > $td/picture
-	set picture=$td/picture
-endif
 if ("$decades" != "0") then
 	set pc1args=($pc1args -e "map(x)=if(x-10^-$decades,log10(x)/$decades+1,0)")
 	set imap="imap(y)=10^((y-1)*$decades)"
 else
 	set imap="imap(y)=y"
 endif
+if ( $legwidth > 20 && $legheight > 40 ) then
 pcomb $pc0args -e 'v=(y+.5)/yres;vleft=v;vright=v' \
 		-e 'vbelow=(y-.5)/yres;vabove=(y+1.5)/yres' \
 		-x $legwidth -y $legheight > $td/scol.pic
-( echo $label; cnt $ndivs \
+( echo "$label"; cnt $ndivs \
 		| rcalc -e '$1='"($scale)*imap(($ndivs-.5-"'$1'")/$ndivs)" \
 		-e "$imap" | sed -e 's/\(\.[0-9][0-9][0-9]\)[0-9]*/\1/' ) \
 	| psign -s -.15 -cf 1 1 1 -cb 0 0 0 \
 		-h `ev "floor($legheight/$ndivs+.5)"` > $td/slab.pic
+else
+	set legwidth=0
+	set legheight=0
+	(echo "" ; echo "-Y 1 +X 1" ; echo "aaa" ) > $td/scol.pic
+	cp $td/scol.pic $td/slab.pic
+endif
 if ( $?doextrem ) then
 	pextrem -o $picture > $td/extrema
 	set minpos=`sed 2d $td/extrema | rcalc -e '$2=$2;$1=$1+'"$legwidth"`
@@ -165,11 +214,16 @@ if ( $?doextrem ) then
 	psign -s -.15 -a 2 -h 16 $minval > $td/minv.pic
 	psign -s -.15 -a 2 -h 16 $maxval > $td/maxv.pic
 	pcomb $pc0args $pc1args $picture $cpict \
-		| pcompos $td/scol.pic 0 0 -t .2 $td/slab.pic 0 $loff \
+		| pcompos $td/scol.pic 0 0 \
+			+t .1 "\!pcomb -e 'lo=1-gi(1)' $td/slab.pic" \
+			`ev 2 $loff-1` -t .5 $td/slab.pic 0 $loff \
 		  - $legwidth 0 $td/minv.pic $minpos $td/maxv.pic $maxpos
 else
 	pcomb $pc0args $pc1args $picture $cpict \
-		| pcompos $td/scol.pic 0 0 -t .2 $td/slab.pic 0 $loff - $legwidth 0
+		| pcompos $td/scol.pic 0 0 \
+			+t .1 "\!pcomb -e 'lo=1-gi(1)' $td/slab.pic" \
+			`ev 2 $loff-1` -t .5 $td/slab.pic 0 $loff \
+			- $legwidth 0
 endif
 quit:
 rm -rf $td