distort-stl: debugging PS output, incomplete

[reprap-play.git] / distort-stl

diff --git a/distort-stl b/distort-stl
index bdbdd49c42db60fbbee7a3514c79736c86970ca7..1f177dc507f80affa8083f8307e0832737b5aa53 100755 (executable)
--- a/distort-stl
+++ b/distort-stl
@@ -32,6 +32,12 @@ use Data::Dumper;
 
 sub TAU () { M_PI * 2; }
 
+my $ps = %ENV{DISTORT_PS};
+if ($ps) {
+    open PS, "> $ps" or die $!;
+    print PS "%!\n";
+}
+
 our $fa = 10;
 
 our $triangles;
@@ -44,33 +50,66 @@ sub shift_arg () {
 
 #no warnings qw(recursion);
 
-sub maybe_subdivide_triangle ($$$$) {
-    my ($t, $ok, $changed, $edge_need_subdivide_fn) = @_;
+sub sprintf_triangle ($) {
+    my ($t) = @_;
 
-    printf STDERR
+    if ($ps && $t->[3] =~ m/$ENV{DISTORT_PS_RE}/) {
+       printf PS <<'END',
+ %20.16g %20.16g %20.16g moveto
+ %20.16g %20.16g %20.16g lineto
+ %20.16g %20.16g %20.16g lineto
+ closepath stroke
+END
+               $t->[0][0], $t->[0][1], $t->[0][2],
+               $t->[1][0], $t->[1][1], $t->[1][2],
+               $t->[2][0], $t->[2][1], $t->[2][2],
+               or die $!;
+       flush PS or die $!;
+    }
+
+    sprintf
        "%11.6f,%11.6f,%11.6f / ".
        "%11.6f,%11.6f,%11.6f / ".
-       "%11.6f,%11.6f,%11.6f ",
+       "%11.6f,%11.6f,%11.6f  %-40s ",
                $t->[0][0], $t->[0][1], $t->[0][2],
                $t->[1][0], $t->[1][1], $t->[1][2],
-               $t->[2][0], $t->[2][1], $t->[2][2];
+               $t->[2][0], $t->[2][1], $t->[2][2],
+               $t->[3];
+}
+
+sub maybe_subdivide_triangle ($$$$) {
+    my ($t, $ok, $changed, $edge_need_subdivide_fn) = @_;
+
+    print STDERR sprintf_triangle $t;
     
     foreach my $ix (0..2) {
        my $jx = ($ix+1) % 3;
        my $kx = ($ix+2) % 3;
        if ($edge_need_subdivide_fn->($t->[$ix], $t->[$jx])) {
            printf STDERR
-               " S i=%d j=%d k=%d \n",
+               " S i=%d j=%d k=%d ",
                $ix, $jx, $kx;
            my @midp;
            foreach my $ci (0..2) {
                push @midp, 0.5 * ($t->[$ix][$ci] + $t->[$jx][$ci]);
            }
+
+           printf STDERR
+               " midp %11.6f,%11.6f,%11.6f\n",
+               @midp;
+
            # triangle i-j-k, splitting edge i-m
            # gives    i-m-k, k-m-j
-           push @$changed,
-               [ $t->[$ix], \@midp, $t->[$kx] ],
-               [ $t->[$kx], \@midp, $t->[$jx] ];
+           my $n = [ @$t ]; $n->[$ix] = \@midp;  $n->[3] = "$t->[3]a$ix$jx";
+           unshift @$changed, $n;
+
+           printf STDERR "%s\n", sprintf_triangle $n;
+
+           my $n = [ @$t ]; $n->[$jx] = \@midp;  $n->[3] = "$t->[3]b$ix$jx";
+           unshift @$changed, $n;
+
+           printf STDERR "%s\n", sprintf_triangle $n;
+
            return;
        }
     }
@@ -190,6 +229,7 @@ while (<I>) {
        push @$triangle, \@xyz;
     } elsif (m/^endloop/) {
        die unless @$triangle == 3;
+       push @$triangle, $.;
        push @$triangles, $triangle;
        undef $triangle;
     } elsif (m/^(?:solid|facet\s+normal|endfacet|endsolid)\s/) {