distort-stl: introduce $gensplit (nfc)

[reprap-play.git] / distort-stl

diff --git a/distort-stl b/distort-stl
index cc959dd7dbbd521054d5bbf2b54d7f1a9fdd34ca..9d8569062b193e10413a3c91e643feeed4f633b9 100755 (executable)
--- a/distort-stl
+++ b/distort-stl
@@ -106,16 +106,16 @@ sub maybe_subdivide_triangle ($$$$) {
 
            # triangle i-j-k, splitting edge i-m
            # gives    i-m-k, k-m-j
-           my $n = [ @$t ]; $n->[$ix] = \@midp;  $n->[3] = "$t->[3]a$ix$jx";
-           unshift @$changed, $n;
-
-           printf STDERR "%s\n", sprintf_triangle $n if $debug;
-
-           my $n = [ @$t ]; $n->[$jx] = \@midp;  $n->[3] = "$t->[3]b$ix$jx";
-           unshift @$changed, $n;
-
-           printf STDERR "%s\n", sprintf_triangle $n if $debug;
-
+           my $gensplit = sub {
+               my ($ixjx, $xwhat) = @_;
+               my $n = [ @$t ];
+               $n->[$ixjx] = \@midp;
+               $n->[3] = "$t->[3]$xwhat";
+               printf STDERR "%s\n", sprintf_triangle $n if $debug;
+               unshift @$changed, $n;
+           };
+           $gensplit->($ix, "a$ix$jx");
+           $gensplit->($jx, "b$ix$jx");
            return;
        }
     }