SVG export

README.markdown

@@ -93,6 +93,7 @@ The author is Alessandro Ranellucci (me).
                             and [input_filename] (default: [input_filename_base].gcode)
         --post-process      Generated G-code will be processed with the supplied script;
                             call this more than once to process through multiple scripts.
+        --export-svg        Export a SVG file containing slices instead of G-code.
       
       Printer options:
         --nozzle-diameter   Diameter of nozzle in mm (default: 0.5)

lib/Slic3r/GUI.pm

@@ -37,12 +37,14 @@ sub OnInit {
     $fileMenu->Append(3, "Slice…");
     $fileMenu->Append(4, "Reslice");
     $fileMenu->Append(5, "Slice and Save As…");
+    $fileMenu->Append(6, "Export SVG…");
     $menubar->Append($fileMenu, "&File");
     EVT_MENU($frame, 1, sub { $panel->save_config });
     EVT_MENU($frame, 2, sub { $panel->load_config });
     EVT_MENU($frame, 3, sub { $panel->do_slice });
     EVT_MENU($frame, 4, sub { $panel->do_slice(reslice => 1) });
     EVT_MENU($frame, 5, sub { $panel->do_slice(save_as => 1) });
+    EVT_MENU($frame, 6, sub { $panel->do_slice(save_as => 1, export_svg => 1) });
     
     $box->SetSizeHints($frame);
     $frame->SetSizer($box);

lib/Slic3r/GUI/SkeinPanel.pm

@@ -222,7 +222,8 @@ sub do_slice {
             }
         } elsif ($params{save_as}) {
             my $output_file = $skein->expanded_output_filepath;
-            my $dlg = Wx::FileDialog->new($self, 'Save gcode file as:', dirname($output_file),
+            $output_file =~ s/\.gcode$/.svg/i if $params{export_svg};
+            my $dlg = Wx::FileDialog->new($self, 'Save ' . ($params{export_svg} ? 'SVG' : 'G-code') . ' file as:', dirname($output_file),
                 basename($output_file), $gcode_wildcard, wxFD_SAVE);
             return if $dlg->ShowModal != wxID_OK;
             $skein->output_file($dlg->GetPath);
@@ -237,15 +238,22 @@ sub do_slice {
         {
             my @warnings = ();
             local $SIG{__WARN__} = sub { push @warnings, $_[0] };
+            if ($params{export_svg}) {
+                $skein->export_svg;
+            } else {
                 $skein->go;
+            }
             $self->catch_warning->($_) for @warnings;
         }
         $process_dialog->Destroy;
         undef $process_dialog;
         
-        my $message = sprintf "%s was successfully sliced in %d minutes and %.3f seconds.",
+        my $message = "$input_file_basename was successfully sliced";
-            $input_file_basename, int($skein->processing_time/60),
+        $message .= sprintf " in %d minutes and %.3f seconds",
-            $skein->processing_time - int($skein->processing_time/60)*60;
+            int($skein->processing_time/60),
+            $skein->processing_time - int($skein->processing_time/60)*60
+            if $skein->processing_time;
+        $message .= ".";
         eval {
             $self->{growler}->notify(Event => 'SKEIN_DONE', Title => 'Slicing Done!', Message => $message)
                 if ($self->{growler});

lib/Slic3r/Skein.pm

@@ -3,7 +3,7 @@ use Moo;
 
 use Config;
 use File::Basename qw(basename fileparse);
-use Slic3r::Geometry qw(PI);
+use Slic3r::Geometry qw(PI unscale);
 use Time::HiRes qw(gettimeofday tv_interval);
 use XXX;
 
@@ -17,14 +17,9 @@ has 'output_file'   => (is => 'rw', required => 0);
 has 'status_cb'     => (is => 'rw', required => 0, default => sub { sub {} });
 has 'processing_time' => (is => 'rw', required => 0);
 
-sub go {
+sub slice_input {
     my $self = shift;
-    my $t0 = [gettimeofday];
     
-    # skein the STL into layers
-    # each layer has surfaces with holes
-    $self->status_cb->(5, "Processing input file " . $self->input_file);    
-    $self->status_cb->(10, "Processing triangulated mesh");
     my $print;
     if ($self->input_file =~ /\.stl$/i) {
         my $mesh = Slic3r::Format::STL->read_file($self->input_file);
@@ -37,6 +32,17 @@ sub go {
     } else {
         die "Input file must have .stl or .amf(.xml) extension\n";
     }
+}
+
+sub go {
+    my $self = shift;
+    my $t0 = [gettimeofday];
+    
+    # skein the STL into layers
+    # each layer has surfaces with holes
+    $self->status_cb->(5, "Processing input file " . $self->input_file);    
+    $self->status_cb->(10, "Processing triangulated mesh");
+    my $print = $self->slice_input;
     
     # make perimeters
     # this will add a set of extrusion loops to each layer
@@ -152,6 +158,49 @@ sub go {
         $print->total_extrusion_length, $print->total_extrusion_volume;
 }
 
+sub export_svg {
+    my $self = shift;
+    
+    my $print = $self->slice_input;
+    my $output_file = $self->expanded_output_filepath;
+    $output_file =~ s/\.gcode$/.svg/i;
+    
+    open my $fh, ">", $output_file or die "Failed to open $output_file for writing\n";
+    print "Exporting to $output_file...";
+    print $fh sprintf <<"EOF", unscale($print->total_x_length), unscale($print->total_y_length);
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN" "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
+<svg width="%s" height="%s" xmlns="http://www.w3.org/2000/svg" xmlns:svg="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+EOF
+    
+    my $print_polygon = sub {
+        my ($polygon, $fill) = @_;
+        printf $fh qq{    <polygon points="%s" style="fill: %s" />},
+            (join ' ', map { join ',', map unscale $_, @$_ } @$polygon), $fill;
+    };
+    
+    foreach my $layer (@{$print->layers}) {
+        printf $fh qq{  <g id="layer%d">\n}, $layer->id;
+        # sort slices so that the outermost ones come first
+        my @slices = sort { $a->expolygon->contour->encloses_point($b->expolygon->contour->[0]) ? 0 : 1 } @{$layer->slices};
+        foreach my $slice (@slices) {
+            $print_polygon->($slice->expolygon->contour, 'black');
+            $print_polygon->($_, 'white') for $slice->expolygon->holes;
+        }
+        print $fh qq{  </g>\n};
+    }
+    
+    print $fh <<"EOF";
+	<!-- 
+	Generated using Slic3r $Slic3r::VERSION
+	http://slic3r.org/
+     -->
+</svg>
+EOF
+    close $fh;
+    print "Done.\n";
+}
+
 # this method will return the value of $self->output_file after expanding its
 # format variables with their values
 sub expanded_output_filepath {

slic3r.pl

@@ -26,6 +26,7 @@ my %cli_options = ();
         'load=s@'               => \$opt{load},
         'ignore-nonexistent-config' => \$opt{ignore_nonexistent_config},
         'threads|j=i'           => \$Slic3r::threads,
+        'export-svg'            => \$opt{export_svg},
     );
     foreach my $opt_key (keys %$Slic3r::Config::Options) {
         my $opt = $Slic3r::Config::Options->{$opt_key};
@@ -81,8 +82,12 @@ if (@ARGV) {
                 printf "=> $message\n";
             },
         );
+        if ($opt{export_svg}) {
+            $skein->export_svg;
+        } else {
             $skein->go;
         }
+    }
 } else {
     usage(1) unless $opt{save};
 }
@@ -111,6 +116,7 @@ Usage: slic3r.pl [ OPTIONS ] file.stl
                         and [input_filename] (default: $Slic3r::output_filename_format)
     --post-process      Generated G-code will be processed with the supplied script;
                         call this more than once to process through multiple scripts.
+    --export-svg        Export a SVG file containing slices instead of G-code.
   
   Printer options:
     --nozzle-diameter   Diameter of nozzle in mm (default: $Slic3r::nozzle_diameter)