Make quick_slice() work with new model handling

lib/Slic3r.pm

@@ -159,4 +159,8 @@ sub open {
     return CORE::open $$fh, $mode, encode_path($filename);
 }
 
+# this package declaration prevents an ugly fatal warning to be emitted when
+# spawning a new thread
+package GLUquadricObjPtr;
+
 1;

lib/Slic3r/GUI/Plater.pm

@@ -638,7 +638,7 @@ sub export_gcode {
     # select output file
     $self->{output_file} = $main::opt{output};
     {
-        $self->{output_file} = $self->skeinpanel->init_print->expanded_output_filepath($self->{output_file}, $self->{objects}[0]->input_file);
+        $self->{output_file} = $self->skeinpanel->init_print->expanded_output_filepath($self->{output_file}, $self->{model}->objects->[0]->input_file);
         my $dlg = Wx::FileDialog->new($self, 'Save G-code file as:', Slic3r::GUI->output_path(dirname($self->{output_file})),
             basename($self->{output_file}), &Slic3r::GUI::SkeinPanel::FILE_WILDCARDS->{gcode}, wxFD_SAVE);
         if ($dlg->ShowModal != wxID_OK) {
@@ -653,8 +653,6 @@ sub export_gcode {
     
     $self->statusbar->StartBusy;
     
-    $_->free_model_object for @{$self->{objects}};
-    
     # It looks like declaring a local $SIG{__WARN__} prevents the ugly
     # "Attempt to free unreferenced scalar" warning...
     local $SIG{__WARN__} = Slic3r::GUI::warning_catcher($self);
@@ -727,6 +725,7 @@ sub export_gcode2 {
         {
             my @warnings = ();
             local $SIG{__WARN__} = sub { push @warnings, $_[0] };
+            
             my %params = (
                 output_file => $output_file,
                 status_cb   => sub { $params{progressbar}->(@_) },
@@ -966,6 +965,7 @@ sub repaint {
         next unless defined $object->thumbnail;
         for my $instance_idx (0 .. $#{$model_object->instances}) {
             my $instance = $model_object->instances->[$instance_idx];
+            next if !defined $object->transformed_thumbnail;
             
             my $thumbnail = $object->transformed_thumbnail->clone;                  # in scaled coordinates
             $thumbnail->scale(&Slic3r::SCALING_FACTOR * $parent->{scaling_factor}); # in unscaled pixels

lib/Slic3r/GUI/SkeinPanel.pm

@@ -134,7 +134,17 @@ sub quick_slice {
         Slic3r::GUI->save_settings;
         
         my $print = $self->init_print;
-        $print->add_model(Slic3r::Model->read_from_file($input_file));
+        my $model = Slic3r::Model->read_from_file($input_file);
+        
+        if ($model->has_objects_with_no_instances) {
+            # apply a default position to all objects not having one
+            foreach my $object (@{$model->objects}) {
+                $object->add_instance(offset => [0,0]) if !defined $object->instances;
+            }
+            $model->arrange_objects($config);
+        }
+        
+        $print->add_model_object($_) for @{ $model->objects };
         $print->validate;
 
         # select output file

lib/Slic3r/Print.pm

@@ -110,15 +110,9 @@ sub add_model_object {
     my $bb1 = Slic3r::Geometry::BoundingBox->merge(map $_->bounding_box, values %meshes);
     
     foreach my $mesh (values %meshes) {
-        # the order of these transformations must be the same as the one used in plater
-        # to make the object positioning consistent with the visual preview
-        
         # we ignore the per-instance transformations currently and only 
         # consider the first one
-        if ($object->instances && @{$object->instances}) {
+        $object->instances->[0]->transform_mesh($mesh);
-            $mesh->rotate($object->instances->[0]->rotation, Slic3r::Point->new(0,0));
-            $mesh->scale($object->instances->[0]->scaling_factor);
-        }
     }
     
     # we align object also after transformations so that we only work with positive coordinates
@@ -133,15 +127,12 @@ sub add_model_object {
     
     # prepare copies
     my @copies = ();
-    if ($object->instances) {
     foreach my $instance (@{ $object->instances }) {
         push @copies, Slic3r::Point->new(
-                scale($instance->offset->[X] - $bb1->extents->[X][MIN])
+            scale($instance->offset->[X] - $bb1->extents->[X][MIN]),
+            scale($instance->offset->[Y] - $bb1->extents->[Y][MIN]),
         );
     }
-    } else {
-        push @copies, Slic3r::Point->new(0,0);
-    }
     
     # initialize print object
     push @{$self->objects}, Slic3r::Print::Object->new(

xs/src/TriangleMesh.cpp

@@ -191,6 +191,8 @@ TriangleMesh::slice(const std::vector<double> &z, std::vector<Polygons> &layers)
         FUTURE: parallelize slice_facet() and make_loops()
     */
     
+    if (!this->repaired) this->repair();
+    
     // build a table to map a facet_idx to its three edge indices
     if (this->stl.v_shared == NULL) stl_generate_shared_vertices(&(this->stl));
     typedef std::pair<int,int>              t_edge;