--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/old/tmp/revers.pl	Thu Nov 12 17:00:08 2009 +0900
@@ -0,0 +1,124 @@
+#!/usr/bin/perl
+
+# fix Cerium xml normal vector
+
+my $i = -1;
+my (@x,@y,@z);
+my @cord;
+my $flag = 0;
+my $fix = 1;
+
+sub v {
+    print "$x[0] $y[0] $z[0]\n";
+    print "$x[1] $y[1] $z[1]\n";
+    print "$x[2] $y[2] $z[2]\n";
+}
+
+sub outer {
+    my ($ax,$ay,$az) = (
+	$x[1]-$x[0],
+	$y[1]-$y[0],
+	$z[1]-$z[0],
+	);
+    my ($bx,$by,$bz) = (
+	$x[2]-$x[0],
+	$y[2]-$y[0],
+	$z[2]-$z[0],
+	);
+    my ($ox,$oy,$oz) = (
+	$ay*$bz - $az*$by,
+        -$ax*$bz + $az*$bx,
+	$ax*$by - $ay*$bx,
+	);
+    my($r) = sqrt($ox*$ox+$oy*$oy+$oz*$oz);
+    ($ox,$oy,$oz) = ($ox/$r,$oy/$r,$oz/$r);
+    push(@cord, [$ox,$oy,$oz]);
+    # print "    $ox   $oy   $oz\n";
+}
+
+if (@ARGV != 2) {
+    die "Usage : objectname filename\n";
+}
+
+my ($object, $file) = @ARGV;
+open(IN, $file);
+
+while(<IN>) {
+    if (! $fix) {
+	if (/<sur/) {
+	    print;
+	    next;    
+	}
+    }
+    if (/<normal/) {
+	$i= -2;
+	print if ($fix);
+	next;
+    }
+    if (/<\/normal/) {
+	$i = -1;
+	print if ($fix);
+	next;
+    }
+
+    if (/$object/) {
+	$flag = 1;
+    }
+
+    if (/\/$object/) {
+	$flag = 0;
+    }
+
+    if ( $i < -1) {
+	if ($i== -4) {
+	    my $cord = shift(@cord);
+	    if ($fix) {
+
+		if ($flag == 1) {
+		    $cord->[0] = -$cord->[0];
+		    $cord->[1] = -$cord->[1];
+		    $cord->[2] = -$cord->[2];
+		}
+
+		print "  $cord->[0]  $cord->[1]  $cord->[2]  \n";
+		print "  $cord->[0]  $cord->[1]  $cord->[2]  \n";
+		print "  $cord->[0]  $cord->[1]  $cord->[2]  \n";
+
+	    } else {
+		print "outer $i   $cord->[0]  $cord->[1]  $cord->[2]  \n";
+		print ;
+	    }
+	    $i = -2;
+	} else {
+	    $i--;
+	}
+	next;
+    }
+    print if ($fix);
+    if (/<\/coord/) {
+	$i = -1;
+	next;
+    }
+    if (/<coord/) {
+	@cord = ();
+	$i=0;
+	next;
+    } 
+    if ($i<0) {
+	next; 
+    }
+    if (/([-]*[.\d]+)\s+([-]*[.\d]+)\s+([-]*[.\d]+)/) {
+	($x[$i],$y[$i],$z[$i]) = ($1,$2,$3);
+#       print "$i $_";
+        if ($i==2) {
+	    &outer;
+	    $i = 0;
+	    next;
+        }
+        $i++;     
+    } else {
+	$i = -1;
+    }
+}
+
+# end