From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Thu, 4 Feb 2016 17:54:39 +0000 (+0000)
Subject: commitid.scad.pl: wip, before remove simplification
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=commitdiff_plain;h=5c7ecbf56066a938bdb4635ef274af12d8ca788b

commitid.scad.pl: wip, before remove simplification
---

diff --git a/commitid.scad.pl b/commitid.scad.pl
new file mode 100755
index 0000000..e1caf36
--- /dev/null
+++ b/commitid.scad.pl
@@ -0,0 +1,139 @@
+#!/usr/bin/perl -w
+use strict;
+
+$SIG{__WARN__} = sub { die @_; };
+
+# We generate a physical indication of which commit was used.
+#
+# We can generate three forms:
+#
+#   Tiny3:
+#   Tiny4:
+#   Tiny5:
+#   Tiny6:
+#   Tiny7:
+#   Tiny8:
+#       git rev-list --first-parent --count HEAD
+#       typically 3-4 characters but we allow for up to 6
+#       eg
+#            Tiny4    1070
+#
+#   Tiny4Q:
+#   Tiny6Q:
+#   Tiny9Q:
+#       same but in two lines eg
+#            Tiny4Q   10
+#                     70
+#
+#   Small4
+#   Small6
+#   Small8
+#       git-rev-list --first-parent --count HEAD
+#       git-rev-parse HEAD
+#       eg
+#            Small6     1070
+#                     82f2a2
+
+sub parsefont () {
+    my %cellmap;
+    while (<DATA>) {
+	last if %cellmap && !m/\S/;
+	next unless m/\S/;
+	chomp;
+	s{^(.) }{};
+	$cellmap{$1} = $_;
+    }
+    my %chrpolys;
+    while (<DATA>) {
+	next unless m/\S/;
+	my @chrs = split / /, $_;
+	<DATA> !~ m/\S/ or die;
+	foreach my $row (0..4) {
+	    $_ = <DATA>;
+	    chomp;
+	    s{^}{ };
+	    $_ .= ' ' x (@chrs * 4);
+	    m{\S/\S} and die;
+	    s{/(?=\s)}{L}g;
+	    s{/(?=\S)}{r}g;
+	    s{\\(?=\s)}{l}g;
+	    s{\\(?=\S)}{R}g;
+	    foreach my $chr (@chrs) {
+		s{^ }{} or die "$chr $_ ?";
+		foreach my $col (0..2) {
+		    my @verts;
+		    if (s{^ }{}) {
+		    } elsif (s{^\S}{}) {
+			my $f = $cellmap{$&};
+			die unless $f;
+			$f =~ s/\b\d/ sprintf '%x', $col*2 + $& /ge;
+			$f =~ s/\d\b/ sprintf '%x', $row*2 + $& /ge;
+			push @{ $chrpolys{$chr} }, [ split / /, $f ];
+		    } else {
+			die "$_ ?";
+		    }
+		}
+	    }
+	    die "$_ ?" if m{\S};
+	}    
+    }
+    foreach my $polys (values %chrpolys) {
+	my %edges;
+	foreach my $p (@$polys) {
+	    foreach my $ei (0..$#$p) {
+		my $e = $p->[$ei].$p->[($ei+1) % @$p];
+		die if $edges{$e};
+		$edges{$e} = [ $p, $ei ];
+	    }
+	}
+      AGAIN: {
+	    foreach my $pa (@$polys) {
+		foreach my $eai (0..$#$pa) {
+		    my $ear = $pa->[ ($eai+1) % @$pa ].$pa->[$eai];
+		    my $ebi = $edges{$ear};
+		    next unless $ebi;
+		    my $pb;
+		    ($pb, $ebi) = @$ebi;
+#		    print "# merging $eai $ebi\n";
+		    splice @$pb, $ebi, 1;
+		    splice @$pa, $eai, 1, @$pb;
+		    @$pb = ( );
+		    next AGAIN;
+		}
+	    }
+	}
+#	@$polys = grep { @$_ } @$polys;
+    }
+		    
+    use Data::Dumper;
+    print Dumper(\%chrpolys);
+}
+
+parsefont();
+
+__DATA__
+
+# 00 20 22 02
+l 00 20 22
+r 00 20 02
+L 00 22 02
+R 20 22 02
+> 00 20 22 02 11
+< 00 20 11 22 02
+
+0 1 2 3 4 5 6 7 8 9
+
+/#\  #  ##\ ##\ # # ### /## ### /#\ /#\
+# #  #    #   # # # #   #     # # # # #
+# #  #  /#/ ### ### ##\ ##\  // >#< \##
+# #  #  #     #   #   # # #  #  # #   #
+\#/  #  ### ##/   # ##/ \#/  #  \#/ ##/
+
+a b c d e f
+
+    #         #     /##
+/## ##\ /## /## /## #
+# # # # #   # # # # ###
+# # # # #   # # #/  #
+\## ##/ \## \## ### #
+