fix wipe tower bug: filament end inserted twice

src/libslic3r/GCode.cpp

@@ -5449,8 +5449,12 @@ std::string GCode::set_extruder(unsigned int extruder_id, double print_z)
         old_retract_length = m_config.retraction_length.get_at(previous_extruder_id);
         old_retract_length_toolchange = m_config.retract_length_toolchange.get_at(previous_extruder_id);
         old_filament_temp = this->on_first_layer()? m_config.nozzle_temperature_initial_layer.get_at(previous_extruder_id) : m_config.nozzle_temperature.get_at(previous_extruder_id);
+        if (m_config.purge_in_prime_tower) {
             wipe_volume = flush_matrix[previous_extruder_id * number_of_extruders + extruder_id];
             wipe_volume *= m_config.flush_multiplier;
+        } else {
+            wipe_volume = m_config.prime_volume;
+        }
         old_filament_e_feedrate = (int)(60.0 * m_config.filament_max_volumetric_speed.get_at(previous_extruder_id) / filament_area);
         old_filament_e_feedrate = old_filament_e_feedrate == 0 ? 100 : old_filament_e_feedrate;
         //BBS: must clean m_start_gcode_filament

src/libslic3r/GCode/ToolOrdering.cpp

@@ -738,8 +738,16 @@ void ToolOrdering::reorder_extruders_for_minimum_flush_volume()
     const unsigned int number_of_extruders = (unsigned int) (sqrt(flush_matrix.size()) + EPSILON);
     // Extract purging volumes for each extruder pair:
     std::vector<std::vector<float>> wipe_volumes;
+    if (m_print_config_ptr->purge_in_prime_tower) {
         for (unsigned int i = 0; i < number_of_extruders; ++i)
-        wipe_volumes.push_back(std::vector<float>(flush_matrix.begin() + i * number_of_extruders, flush_matrix.begin() + (i + 1) * number_of_extruders));
+            wipe_volumes.push_back(
+                std::vector<float>(flush_matrix.begin() + i * number_of_extruders, flush_matrix.begin() + (i + 1) * number_of_extruders));
+    } else {
+        // populate wipe_volumes with prime_volume
+        for (unsigned int i = 0; i < number_of_extruders; ++i) {
+            wipe_volumes.push_back(std::vector<float>(number_of_extruders, m_print_config_ptr->prime_volume));
+        }
+    }
 
     unsigned int current_extruder_id = -1;
     for (int i = 0; i < m_layer_tools.size(); ++i) {

src/libslic3r/GCode/WipeTower2.cpp

@@ -1021,7 +1021,6 @@ void WipeTower2::toolchange_Change(
 
     // This is where we want to place the custom gcodes. We will use placeholders for this.
     // These will be substituted by the actual gcodes when the gcode is generated.
-    writer.append("[filament_end_gcode]\n");
     writer.append("[change_filament_gcode]\n");
 
     // Travel to where we assume we are. Custom toolchange or some special T code handling (parking extruder etc)

src/libslic3r/Print.cpp

@@ -2464,7 +2464,7 @@ void Print::_make_wipe_tower()
     }
     this->throw_if_canceled();
 
-    if (!m_config.purge_in_prime_tower) {
+    if (is_BBL_printer()) {
         // in BBL machine, wipe tower is only use to prime extruder. So just use a global wipe volume.
         WipeTower wipe_tower(m_config, m_plate_index, m_origin, m_config.prime_volume, m_wipe_tower_data.tool_ordering.first_extruder(),
                              m_wipe_tower_data.tool_ordering.empty() ? 0.f : m_wipe_tower_data.tool_ordering.back().print_z);
@@ -2588,7 +2588,9 @@ void Print::_make_wipe_tower()
                 for (const auto extruder_id : layer_tools.extruders) {
                     if (/*(first_layer && extruder_id == m_wipe_tower_data.tool_ordering.all_extruders().back()) || */ extruder_id !=
                         current_extruder_id) {
-                        float volume_to_wipe = wipe_volumes[current_extruder_id][extruder_id]; // total volume to wipe after this toolchange
+                        float volume_to_wipe = m_config.prime_volume;
+                        if (m_config.purge_in_prime_tower) {
+                            volume_to_wipe = wipe_volumes[current_extruder_id][extruder_id]; // total volume to wipe after this toolchange
                             volume_to_wipe *= m_config.flush_multiplier;
                             // Not all of that can be used for infill purging:
                             volume_to_wipe -= (float) m_config.filament_minimal_purge_on_wipe_tower.get_at(extruder_id);
@@ -2599,6 +2601,7 @@ void Print::_make_wipe_tower()
 
                             // add back the minimal amount toforce on the wipe tower:
                             volume_to_wipe += (float) m_config.filament_minimal_purge_on_wipe_tower.get_at(extruder_id);
+                        }
 
                         // request a toolchange at the wipe tower with at least volume_to_wipe purging amount
                         wipe_tower.plan_toolchange((float) layer_tools.print_z, (float) layer_tools.wipe_tower_layer_height,