From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Thu, 4 Feb 2016 19:31:30 +0000 (+0000)
Subject: commitid.scad.pl: more wip
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=commitdiff_plain;h=23fa78caadadc497688db91a01f1c2348eb46f30

commitid.scad.pl: more wip
---

diff --git a/commitid.scad.pl b/commitid.scad.pl
index 72ab714..a6ef9a5 100755
--- a/commitid.scad.pl
+++ b/commitid.scad.pl
@@ -3,9 +3,24 @@ use strict;
 
 $SIG{__WARN__} = sub { die @_; };
 
+#  xxx much of the comment below is TODO
+
 # We generate a physical indication of which commit was used.
 #
-# We can generate three forms:
+# We provide for a scaling factor
+#
+#    $Commitid_pixelsz = 0.4;
+#    $Commitid_depth = 1.5; // in pixels
+#
+# For each form we have
+#
+#    module Commitid_Form_2D(pixelsz=0.4)
+#    module Commitid_Form(pixelsz=0.4, depth=pixelsz)
+#
+#    function Commitid_Form_size(pixelsz=$Commitid_pixelsz) => [ xsz, ysz ]
+#         
+#
+# We can generate these forms:
 #
 #   Tiny3:
 #   Tiny4:
@@ -25,6 +40,13 @@ $SIG{__WARN__} = sub { die @_; };
 #            Tiny4Q   10
 #                     70
 #
+#   Git4
+#   Git6
+#   Git8
+#       git-rev-parse HEAD
+#       eg
+#            Git6    82f2a2
+
 #   Small4
 #   Small6
 #   Small8
@@ -34,9 +56,12 @@ $SIG{__WARN__} = sub { die @_; };
 #            Small6     1070
 #                     82f2a2
 
+sub p { print @_ or die $!; }
+
 sub parsefont () {
     my %cellmap;
-    while (<DATA>) {
+    for (;;) {
+	$_ = <DATA> // die;
 	last if %cellmap && !m/\S/;
 	next unless m/\S/;
 	chomp;
@@ -48,16 +73,17 @@ sub parsefont () {
 	next unless m/\S/;
 	my @chrs = split / /, $_;
 	<DATA> !~ m/\S/ or die;
-	foreach my $row (0..4) {
+	foreach my $row (reverse 0..4) {
 	    $_ = <DATA>;
 	    chomp;
 	    s{^}{ };
-	    $_ .= ' ' x (@chrs * 4);
+	    $_ .= ' ' x 8;
 	    m{\S/\S} and die;
 	    s{/(?=\s)}{L}g;
 	    s{/(?=\S)}{r}g;
 	    s{\\(?=\s)}{l}g;
 	    s{\\(?=\S)}{R}g;
+	    p "// $_\n";
 	    foreach my $chr (@chrs) {
 		s{^ }{} or die "$chr $_ ?";
 		foreach my $col (0..2) {
@@ -66,8 +92,8 @@ sub parsefont () {
 		    } 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;
+			$f =~ s/\b\d/ sprintf '%05d', $col*4000 + $&*2001 /ge;
+			$f =~ s/\d\b/ sprintf '%05d', $row*4000 + $&*2001 /ge;
 			push @{ $chrpolys{$chr} }, [ split / /, $f ];
 		    } else {
 			die "$_ ?";
@@ -77,18 +103,47 @@ sub parsefont () {
 	    die "$_ ?" if m{\S};
 	}    
     }
-		    
-    use Data::Dumper;
-    print Dumper(\%chrpolys);
+
+    my @demo;
+    my $democols = 6;
+    foreach my $chr (sort keys %chrpolys) {
+	my $chrx = sprintf '%#x', ord $chr;
+	my $mod = "Commitid__chr_$chrx";
+	p "module $mod () {\n";
+	foreach my $poly (@{ $chrpolys{$chr} }) {
+	    p " polygon([";
+	    my $delim = "";
+	    foreach my $pt (@$poly) {
+		p $delim;
+		$pt =~ s{\d{5}}{$&,};
+		$pt =~ s{\b\d}{$&.}g;
+		p "[$pt]";
+		$delim = ',';
+	    }
+	    p "]);\n";
+	}
+	p "}\n";
+	my $px = @demo % $democols;
+	my $py = int(@demo / $democols);
+	push @demo, " translate([$px * 1.600, $py * 2.400]) $mod ();\n";
+    }
+    p "module Commitid_FontDemo(){\n";
+    p $_ foreach @demo;
+    p "}\n";
+
+#    use Data::Dumper;
+#    print Dumper(\%chrpolys);
 }
 
 parsefont();
 
+#p "Commitid_FontDemo();\n";
+
 __DATA__
 
 # 00 20 22 02
-l 00 20 22
-r 00 20 02
+l 00 20 02
+r 00 20 22
 L 00 22 02
 R 20 22 02
 > 00 20 22 02 11
@@ -96,17 +151,17 @@ R 20 22 02
 
 0 1 2 3 4 5 6 7 8 9
 
-/#\  #  ##\ ##\ # # ### /## ### /#\ /#\
-# #  #    #   # # # #   #     # # # # #
-# #  #  /#/ ### ### ##\ ##\  // >#< \##
+/#\  r  /#\ ##\ # # ### //  ### /#\ /#\
+# # /#    #   # # # #   #     # # # # #
+#r#  #  /#/ ##< \## ##\ ##\  // >#< \##
 # #  #  #     #   #   # # #  #  # #   #
-\#/  #  ### ##/   # ##/ \#/  #  \#/ ##/
+\#/ /#\ ### ##/   # ##/ \#/  #  \#/ ##/
 
 a b c d e f
 
     #         #     /##
-/## ##\ /## /## /## #
-# # # # #   # # # # ###
+/## ##\ /## /## /#\ #
+# # # # #   # # #r/ ###
 # # # # #   # # #/  #
-\## ##/ \## \## ### #
+\## ##/ \## \## \#/ #