NEW: add best_object_pos for auto-arranging

For i3 printers, best object position may not be the bed center,
we need to align objects to the specified best_object_pos.

Jira: STUDIO-4133

Change-Id: I06e31e597d2dd8288eb24a52d836cc8a134a4111

resources/profiles/BBL/machine/Bambu Lab A1 mini 0.4 nozzle.json

@@ -50,10 +50,8 @@
         "179"
     ],
     "printer_structure": "i3",
-    "retract_lift_below": [
-        "179"
-    ],
     "scan_first_layer": "0",
+    "best_object_pos":"0.85x0.5",
     "upward_compatible_machine": [
         "Bambu Lab P1S 0.4 nozzle",
         "Bambu Lab P1P 0.4 nozzle",

resources/profiles/BBL/machine/Bambu Lab P1P 0.4 nozzle.json

@@ -31,7 +31,6 @@
     "z_hop": [
         "0.4"
     ],
-    "printer_structure": "corexy",
     "upward_compatible_machine": [
         "Bambu Lab P1S 0.4 nozzle",
         "Bambu Lab X1 0.4 nozzle",

resources/profiles/BBL/machine/Bambu Lab P1S 0.4 nozzle.json

@@ -30,7 +30,6 @@
     "z_hop": [
         "0.4"
     ],
-    "printer_structure": "corexy",
     "upward_compatible_machine": [
         "Bambu Lab P1P 0.4 nozzle",
         "Bambu Lab X1 0.4 nozzle",

resources/profiles/BBL/machine/Bambu Lab X1 0.4 nozzle.json

@@ -31,7 +31,6 @@
     "z_hop": [
         "0.4"
     ],
-    "printer_structure": "corexy",
     "upward_compatible_machine": [
         "Bambu Lab P1S 0.4 nozzle",
         "Bambu Lab P1P 0.4 nozzle",

resources/profiles/BBL/machine/fdm_bbl_3dp_001_common.json

@@ -107,6 +107,8 @@
     "extruder_clearance_max_radius": "68",
     "extruder_clearance_height_to_lid": "90",
     "nozzle_volume": "107",
+    "printer_structure": "corexy",
+    "best_object_pos":"0.5x0.5",
     "retraction_minimum_travel": [
         "1"
     ],

src/libnest2d/include/libnest2d/placers/nfpplacer.hpp

@@ -37,8 +37,9 @@ struct NfpPConfig {
         BOTTOM_RIGHT,
         TOP_LEFT,
         TOP_RIGHT,
-        DONT_ALIGN      //!> Warning: parts may end up outside the bin with the
+        DONT_ALIGN,     //!> Warning: parts may end up outside the bin with the
                         //! default object function.
+        USER_DEFINED
     };
 
     /// Which angles to try out for better results.
@@ -50,6 +51,8 @@ struct NfpPConfig {
     /// Where to start putting objects in the bin.
     Alignment starting_point;
 
+    TPoint<RawShape> best_object_pos;
+
     /**
      * @brief A function object representing the fitting function in the
      * placement optimization process. (Optional)
@@ -1100,6 +1103,11 @@ private:
             cb = bbin.maxCorner();
             break;
         }
+        case Config::Alignment::USER_DEFINED: {
+            ci = bb.center();
+            cb = config_.best_object_pos;
+            break;
+        }
         default: ; // DONT_ALIGN
         }
 

src/libslic3r/Arrange.cpp

@@ -153,16 +153,16 @@ Points get_shrink_bedpts(const DynamicPrintConfig* print_cfg, const ArrangeParam
 // Slic3r.
 template<class PConf>
 void fill_config(PConf& pcfg, const ArrangeParams &params) {
-
-    if (params.is_seq_print) {
-        // Start placing the items from the center of the print bed
-        pcfg.starting_point = PConf::Alignment::BOTTOM_LEFT;
-    }
-    else {
-        // Start placing the items from the center of the print bed
-        pcfg.starting_point = PConf::Alignment::TOP_RIGHT;
-    }
-
+    
+        if (params.is_seq_print) {
+            // Start placing the items from the center of the print bed
+            pcfg.starting_point = PConf::Alignment::BOTTOM_LEFT;
+        }
+        else {
+            // Start placing the items from the center of the print bed
+            pcfg.starting_point = PConf::Alignment::TOP_RIGHT;
+        }
+    
     if (params.do_final_align) {
         // Align the arranged pile into the center of the bin
         pcfg.alignment = PConf::Alignment::CENTER;
@@ -564,6 +564,14 @@ public:
         m_norm = std::sqrt(m_bin_area);
         fill_config(m_pconf, params);
         this->params = params;
+
+        // if best object center is not bed center, specify starting point here
+        if (std::abs(this->params.align_center.x() - 0.5) > 0.001 || std::abs(this->params.align_center.y() - 0.5) > 0.001) {
+            auto binbb = sl::boundingBox(m_bin);
+            m_pconf.best_object_pos = binbb.minCorner() + Point{ binbb.width() * this->params.align_center.x(), binbb.height() * this->params.align_center.y() };
+            m_pconf.alignment = PConfig::Alignment::USER_DEFINED;
+        }
+
         for (auto& region : m_pconf.m_excluded_regions) {
             Box  bb = region.boundingBox();
             m_excluded_and_extruCali_regions.emplace_back(bb);

src/libslic3r/Arrange.hpp

@@ -127,6 +127,7 @@ struct ArrangeParams {
     float clearance_height_to_lid = 0;
     float cleareance_radius = 0;
     float printable_height = 256.0;
+    Vec2d align_center{ 0.5,0.5 };
 
     ArrangePolygons excluded_regions;   // regions cant't be used
     ArrangePolygons nonprefered_regions; // regions can be used but not prefered

src/libslic3r/Preset.cpp

@@ -853,6 +853,7 @@ static std::vector<std::string> s_Preset_printer_options {
     // BBS
     "scan_first_layer", "machine_load_filament_time", "machine_unload_filament_time", "machine_pause_gcode", "template_custom_gcode",
     "nozzle_type","auxiliary_fan", "nozzle_volume","upward_compatible_machine", "z_hop_types","support_chamber_temp_control","support_air_filtration","printer_structure","thumbnail_size",
+    "best_object_pos",
     //OrcaSlicer
     "host_type", "print_host", "printhost_apikey",
     "print_host_webui",

src/libslic3r/PrintConfig.cpp

@@ -502,7 +502,7 @@ void PrintConfigDef::init_common_params()
     def->mode = comAdvanced;
     def->cli = ConfigOptionDef::nocli;
     def->set_default_value(new ConfigOptionEnum<AuthorizationType>(atKeyPassword));
-
+    
     // temporary workaround for compatibility with older Slicer
     {
         def = this->add("preset_name", coString);
@@ -1761,6 +1761,12 @@ void PrintConfigDef::init_fff_params()
     def->mode = comDevelop;
     def->set_default_value(new ConfigOptionEnum<PrinterStructure>(psUndefine));
 
+    def = this->add("best_object_pos", coPoint);
+    def->label = L("Best object position");
+    def->tooltip = L("Best auto arranging position in range [0,1] w.r.t. bed shape.");
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionPoint(Vec2d(0.5, 0.5)));
+
     def = this->add("auxiliary_fan", coBool);
     def->label = L("Auxiliary part cooling fan");
     def->tooltip = L("Enable this option if machine has auxiliary part cooling fan");

src/libslic3r/PrintConfig.hpp

@@ -956,6 +956,7 @@ PRINT_CONFIG_CLASS_DERIVED_DEFINE(
     ((ConfigOptionInts,               fan_min_speed))
     ((ConfigOptionFloats,             min_layer_height))
     ((ConfigOptionFloat,              printable_height))
+    ((ConfigOptionPoint,              best_object_pos))
     ((ConfigOptionFloats,             slow_down_min_speed))
     ((ConfigOptionFloats,             nozzle_diameter))
     ((ConfigOptionBool,               reduce_infill_retraction))

src/slic3r/GUI/Jobs/ArrangeJob.cpp

@@ -739,11 +739,13 @@ arrangement::ArrangeParams init_arrange_params(Plater *p)
     arrangement::ArrangeParams         params;
     const GLCanvas3D::ArrangeSettings &settings = static_cast<const GLCanvas3D *>(p->canvas3D())->get_arrange_settings();
     auto &                             print    = wxGetApp().plater()->get_partplate_list().get_current_fff_print();
+    const PrintConfig& print_config = print.config();
 
-    params.clearance_height_to_rod             = print.config().extruder_clearance_height_to_rod.value;
-    params.clearance_height_to_lid             = print.config().extruder_clearance_height_to_lid.value;
-    params.cleareance_radius                   = print.config().extruder_clearance_max_radius.value;
-    params.printable_height                    = print.config().printable_height.value;
+    params.clearance_height_to_rod             = print_config.extruder_clearance_height_to_rod.value;
+    params.clearance_height_to_lid             = print_config.extruder_clearance_height_to_lid.value;
+    params.cleareance_radius                   = print_config.extruder_clearance_max_radius.value;
+    params.printable_height                    = print_config.printable_height.value;
+    params.align_center                        = print_config.best_object_pos.value;
     params.allow_rotations                     = settings.enable_rotation;
     params.allow_multi_materials_on_same_plate = settings.allow_multi_materials_on_same_plate;
     params.avoid_extrusion_cali_region         = settings.avoid_extrusion_cali_region;

src/slic3r/GUI/Plater.cpp

@@ -2331,7 +2331,8 @@ Plater::priv::priv(Plater *q, MainFrame *main_frame)
         "layer_height", "initial_layer_print_height", "min_layer_height", "max_layer_height",
         "brim_width", "wall_loops", "wall_filament", "sparse_infill_density", "sparse_infill_filament", "top_shell_layers",
         "enable_support", "support_filament", "support_interface_filament",
-        "support_top_z_distance", "support_bottom_z_distance", "raft_layers"
+        "support_top_z_distance", "support_bottom_z_distance", "raft_layers",
+        "best_object_pos"
         }))
     , sidebar(new Sidebar(q))
     , notification_manager(std::make_unique<NotificationManager>(q))

src/slic3r/GUI/Tab.cpp

@@ -2994,6 +2994,7 @@ void TabPrinter::build_fff()
         optgroup->append_single_option_line(option);
         optgroup->append_single_option_line("printable_height");
         optgroup->append_single_option_line("nozzle_volume");
+        optgroup->append_single_option_line("best_object_pos");
         // BBS
 #if 0
         //optgroup->append_single_option_line("z_offset");