--- ray/src/px/falsecolor.csh	1991/05/27 09:00:38	1.5
+++ ray/src/px/falsecolor.csh	2005/11/12 06:14:51	2.13
@@ -1,24 +1,38 @@
-#!/bin/csh -f
-# SCCSid "$SunId$ LBL"
+#!/bin/csh -fe
+# RCSid: $Id: falsecolor.csh,v 2.13 2005/11/12 06:14:51 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=470
+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='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=
+set loff=0
 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="$argv[1]"
@@ -63,22 +77,29 @@ while ($#argv > 0)
 		breaksw
 	case -cl:
 		set docont=a
+		set loff=12
 		breaksw
 	case -cb:
 		set docont=b
+		set loff=13
 		breaksw
+	case -e:
+		set doextrem
+		set needfile
+		breaksw
 	case -n:
 		shift argv
 		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
 cat > $td/pc0.cal <<_EOF_
+PI : 3.14159265358979323846 ;
 scale : $scale ;
 mult : $mult ;
 ndivs : $ndivs ;
@@ -86,23 +107,44 @@ ndivs : $ndivs ;
 or(a,b) : if(a,a,b);
 EPS : 1e-7;
 neq(a,b) : if(a-b-EPS,1,b-a-EPS);
-btwn(a,b) : if(a-x,-1,b-x);
+btwn(a,x,b) : if(a-x,-1,b-x);
 clip(x) : if(x-1,1,if(x,x,0));
 frac(x) : x - floor(x);
-boundary(a,b) : neq(floor(ndivs*a),floor(ndivs*b));
+boundary(a,b) : neq(floor(ndivs*a+.5),floor(ndivs*b+.5));
 
-isconta = or(boundary(vleft,vright),boundary(vabove,vbelow));
+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,
+0.00103547,0,7.449763e-06,0.0004390987,0.001367254,0.003076,
+0.01376382,0.06085327,0.1712073,0.2889212,0.3404111,0.3803934,
+0.4135148,0.4461151,0.4966744,0.6343959,0.7709373,0.9048474,1,
+1,0.9863);
+def_red(x):interp_arr(x/0.0454545+1,def_redp);
+def_grnp(i):select(i,0.0009766,0,0.0008966244,
+0.0264977,0.1256843,0.2865799,0.4251992,0.4775091,0.4406337,
+0.3546771,0.2374256,0.1424751,0.09136063,0.0474073,0.0181899,
+0.004181549,9.587855e-05,0,0.008718861,0.1025931,0.3106831,
+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,
+0.5131397,0.5363797,0.5193677,0.4091852,0.1732726,0.05331749,
+0.0457587,0.06656252,0.06819438,0.04973373,0.02796644,
+0.01131437,0.00280772,0.0002246617,0.0003480934,0.001044561,
+0.001006845,0.002297005,0.01128842,0.02539);
+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 > $td/pc1.cal <<_EOF_
 norm : mult/scale/le(1);
@@ -130,21 +172,50 @@ if ("$cpict" == "") then
 else if ("$cpict" == "$picture") then
 	set cpict=
 endif
-if ($decades > 0) then
+if ($?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 "$imap" ) \
-	| psign -cf 1 1 1 -cb 0 0 0 -h `ev "floor(2*$legheight/$ndivs+.5)"` \
-	| pfilt -1 -x /2 -y /2 > $td/slab.pic
-pcomb $pc0args $pc1args $picture $cpict \
-	| pcompos $td/scol.pic 0 0 -t .2 $td/slab.pic 25 0 - $legwidth 0
+		-e "$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"`
+	set minval=`rcalc -e '$1=($3*.27+$4*.67+$5*.06)*'"$mult" $td/extrema | sed -e 2d -e 's/\(\.[0-9][0-9][0-9]\)[0-9]*/\1/'`
+	set maxpos=`sed 1d $td/extrema | rcalc -e '$2=$2;$1=$1+'"$legwidth"`
+	set maxval=`rcalc -e '$1=($3*.27+$4*.67+$5*.06)*'"$mult" $td/extrema | sed -e 1d -e 's/\(\.[0-9][0-9][0-9]\)[0-9]*/\1/'`
+	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 .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 .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