orig/genbackg.csh
author Axel Jacobs <axel@jaloxa.eu>
Mon, 14 Apr 2014 22:21:17 +0100
changeset 73 87fa3132a136
parent 0 0aa115157c9c
permissions -rw-r--r--
New IES test file with spaces in file name
     1 #!/bin/csh -f
     2 # RCSid: $Id: genbackg.csh,v 2.2 2008/08/25 04:50:32 greg Exp $
     3 #
     4 # Generate height field to surround a mesh with an irregular border
     5 #
     6 #	4/16/2002	Greg Ward
     7 #
     8 if ( $#argv < 3 ) goto userr
     9 # Get arguments
    10 set mat = $1
    11 set nam = $2
    12 set mesh = $3
    13 # Get options
    14 set smooth=""
    15 set i = 4
    16 while ( $i <= $#argv )
    17 	switch ($argv[$i])
    18 	case -c:
    19 		@ i++ ; set a=$i
    20 		@ i++ ; set b=$i
    21 		@ i++ ; set c=$i
    22 		set c00=($argv[$a] $argv[$b] $argv[$c])
    23 		@ i++ ; set a=$i
    24 		@ i++ ; set b=$i
    25 		@ i++ ; set c=$i
    26 		set c01=($argv[$a] $argv[$b] $argv[$c])
    27 		@ i++ ; set a=$i
    28 		@ i++ ; set b=$i
    29 		@ i++ ; set c=$i
    30 		set c11=($argv[$a] $argv[$b] $argv[$c])
    31 		@ i++ ; set a=$i
    32 		@ i++ ; set b=$i
    33 		@ i++ ; set c=$i
    34 		set c10=($argv[$a] $argv[$b] $argv[$c])
    35 		unset a b c
    36 		breaksw
    37 	case -r:
    38 		@ i++
    39 		set step = $argv[$i]
    40 		breaksw
    41 	case -b:
    42 		@ i++
    43 		set bord = $argv[$i]
    44 		breaksw
    45 	case -s:
    46 		set smooth="-s"
    47 		breaksw
    48 	default:
    49 		goto userr
    50 	endsw
    51 	@ i++
    52 end
    53 # Get corner points
    54 set lim=(`getbbox -h $mesh`)
    55 if (! $?bord ) then
    56 	set bord=`ev "($lim[2]-$lim[1]+$lim[4]-$lim[3])/20"`
    57 endif
    58 if (! $?c00 ) then
    59 	set c00=(`ev "$lim[1]-$bord" "$lim[3]-$bord" "($lim[5]+$lim[6])/2"`)
    60 	set c01=(`ev "$lim[2]+$bord" "$lim[3]-$bord" "($lim[5]+$lim[6])/2"`)
    61 	set c10=(`ev "$lim[1]-$bord" "$lim[4]+$bord" "($lim[5]+$lim[6])/2"`)
    62 	set c11=(`ev "$lim[2]+$bord" "$lim[4]+$bord" "($lim[5]+$lim[6])/2"`)
    63 endif
    64 # Get mesh resolution
    65 if (! $?step ) then
    66 	set step=`ev "sqrt(($c11[1]-$c00[1])*($c11[1]-$c00[1])+($c11[2]-$c00[2])*($c11[2]-$c00[2]))/70"`
    67 endif
    68 set res=(`ev "ceil(sqrt(($c01[1]-$c00[1])*($c01[1]-$c00[1])+($c01[2]-$c00[2])*($c01[2]-$c00[2]))/$step)" "ceil(sqrt(($c10[1]-$c00[1])*($c10[1]-$c00[1])+($c10[2]-$c00[2])*($c10[2]-$c00[2]))/$step)"`)
    69 set edgef=`mktemp /tmp/edgerad.XXXXXX`
    70 cat > $edgef << _EOF_
    71 void sphere c00
    72 0 0 4
    73 $c00 .001
    74 void sphere c01
    75 0 0 4
    76 $c01 .001
    77 void sphere c10
    78 0 0 4
    79 $c10 .001
    80 void sphere c11
    81 0 0 4
    82 $c11 .001
    83 void cylinder ex0
    84 0 0 7
    85 $c00 $c10 .001
    86 void cylinder ex1
    87 0 0 7
    88 $c01 $c11 .001
    89 void cylinder ey0
    90 0 0 7
    91 $c00 $c01 .001
    92 void cylinder ey1
    93 0 0 7
    94 $c10 $c11 .001
    95 _EOF_
    96 set meshcal=`mkdir /tmp/meshcal.XXXXXX`
    97 cat > $meshcal << _EOF_
    98 lerp(x,y0,y1):(1-x)*y0+x*y1;
    99 and(a,b):if(a,b,-1);
   100 or(a,b):if(a,1,b);
   101 not(a):if(a,-1,1);
   102 max(a,b):if(a-b,a,b);
   103 min(a,b):if(a-b,b,a);
   104 EPS:1e-7;
   105 XR:min(32,floor($res[1]/2));
   106 YR:8;
   107 eq(a,b):and(a-b+EPS,b-a+EPS);
   108 sumfun2x(f,y,x0,x1):if(x1-x0+EPS,f(x0,y)+sumfun2x(f,y,x0+1,x1),0);
   109 sumfun2(f,x0,x1,y0,y1):if(y1-y0+EPS,
   110 	sumfun2x(f,y0,x0,x1)+sumfun2(f,x0,x1,y0+1,y1), 0);
   111 xpos(xf,yf)=lerp(xf,lerp(yf,$c00[1],$c10[1]),lerp(yf,$c01[1],$c11[1]));
   112 ypos(xf,yf)=lerp(xf,lerp(yf,$c00[2],$c10[2]),lerp(yf,$c01[2],$c11[2]));
   113 onedge=or(or(eq(x,0),eq(x,xmax-1)),or(eq(y,0),eq(y,ymax-1)));
   114 z0:$lim[5]-$bord;
   115 height(xo,yo)=z0+gi(1,xo,yo);
   116 maxwt(xo,yo):if(and(eq(xo,0),eq(yo,0)),100,1/(xo*xo+yo*yo));
   117 wt(xo,yo)=if(height(xo,yo)-1e9, 0, maxwt(xo,yo));
   118 wtv(xo,yo)=wt(xo,yo)*height(xo,yo);
   119 wts=sumfun2(wt,-XR,XR,-YR,YR);
   120 sum=sumfun2(wtv,-XR,XR,-YR,YR);
   121 inmesh=and(not(onedge),eq(sumfun2(wt,-1,1,-1,1),sumfun2(maxwt,-1,1,-1,1)));
   122 lo=if(inmesh,1e10,if(wts-EPS,sum/wts,($lim[5]+$lim[6])/2));
   123 _EOF_
   124 # Generate height image
   125 set meshoct=`/tmp/meshoct.XXXXXXX`
   126 xform -m void $mesh | oconv - $edgef > $meshoct
   127 set meshpic=`mktemp /tmp/meshpic.XXXXXX`
   128 cnt $res[2] $res[1] \
   129 	| rcalc -e 'sp=$2/'"($res[1]-1)" -e 'tp=1-$1/'"($res[2]-1)" \
   130 	-f $meshcal -e "xp=xpos(sp,tp);yp=ypos(sp,tp)" \
   131 	-e '$1=xp;$2=yp;$3=z0;$4=0;$5=0;$6=1' \
   132 	| rtrace -w -faf -oL -x $res[1] -y $res[2] $meshoct \
   133 	| pvalue -r -b -df > $meshpic
   134 rm $edgef $meshoct
   135 # Output mesh surround
   136 cat << _EOF_
   137 # $0 $argv[*]
   138 # Corner points:
   139 #	$c00
   140 #	$c01
   141 #	$c11
   142 #	$c10
   143 _EOF_
   144 pflip -v $meshpic \
   145 	| pcomb -f $meshcal - \
   146 	| pvalue -h -H -pG -d \
   147 	| gensurf $mat $nam 'xpos(s,t)' 'ypos(s,t)' - \
   148 		`ev $res[1]-1 $res[2]-1` \
   149 		-e 'valid(xf,yf)=1e9-Z`SYS(xf,yf)' \
   150 		-f $meshcal $smooth
   151 rm $meshcal $meshpic
   152 # All done -- exit
   153 exit 0
   154 # Usage error message
   155 userr:
   156 echo Usage: $0 "mat name mesh_file [-c corners][-b bord_width][-r step_size][-s]"
   157 exit 1