Create 'brim for prime tower only' option (see also backend PR). [CURA-5864]

cura/BuildVolume.py

@@ -785,6 +785,15 @@ class BuildVolume(SceneNode):
                 prime_tower_x = prime_tower_x - machine_width / 2 #Offset by half machine_width and _depth to put the origin in the front-left.
                 prime_tower_y = prime_tower_y + machine_depth / 2
 
+            if ExtruderManager.getInstance().getResolveOrValue("prime_tower_brim_enable"):
+                brim_size = (
+                    extruder.getProperty("brim_line_count", "value") *
+                    extruder.getProperty("skirt_brim_line_width", "value") / 100.0 *
+                    extruder.getProperty("initial_layer_line_width_factor", "value")
+                )
+                prime_tower_x -= brim_size
+                prime_tower_y += brim_size
+
             if self._global_container_stack.getProperty("prime_tower_circular", "value"):
                 radius = prime_tower_size / 2
                 prime_tower_area = Polygon.approximatedCircle(radius)
@@ -1024,7 +1033,7 @@ class BuildVolume(SceneNode):
             # We don't create an additional line for the extruder we're printing the skirt with.
             bed_adhesion_size -= skirt_brim_line_width * initial_layer_line_width_factor / 100.0
 
-        elif adhesion_type == "brim":
+        elif adhesion_type == "brim" or self._global_container_stack.getProperty("prime_tower_brim_enable", "value"):
             brim_line_count = self._global_container_stack.getProperty("brim_line_count", "value")
             bed_adhesion_size = skirt_brim_line_width * brim_line_count * initial_layer_line_width_factor / 100.0
 
@@ -1077,7 +1086,7 @@ class BuildVolume(SceneNode):
     _raft_settings = ["adhesion_type", "raft_base_thickness", "raft_interface_thickness", "raft_surface_layers", "raft_surface_thickness", "raft_airgap", "layer_0_z_overlap"]
     _extra_z_settings = ["retraction_hop_enabled", "retraction_hop"]
     _prime_settings = ["extruder_prime_pos_x", "extruder_prime_pos_y", "extruder_prime_pos_z", "prime_blob_enable"]
-    _tower_settings = ["prime_tower_enable", "prime_tower_circular", "prime_tower_size", "prime_tower_position_x", "prime_tower_position_y"]
+    _tower_settings = ["prime_tower_enable", "prime_tower_circular", "prime_tower_size", "prime_tower_position_x", "prime_tower_position_y", "prime_tower_brim_enable"]
     _ooze_shield_settings = ["ooze_shield_enabled", "ooze_shield_dist"]
     _distance_settings = ["infill_wipe_dist", "travel_avoid_distance", "support_offset", "support_enable", "travel_avoid_other_parts", "travel_avoid_supports"]
     _extruder_settings = ["support_enable", "support_bottom_enable", "support_roof_enable", "support_infill_extruder_nr", "support_extruder_nr_layer_0", "support_bottom_extruder_nr", "support_roof_extruder_nr", "brim_line_count", "adhesion_extruder_nr", "adhesion_type"] #Settings that can affect which extruders are used.

cura/Settings/ExtruderManager.py

@@ -264,7 +264,8 @@ class ExtruderManager(QObject):
                 used_extruder_stack_ids.add(self.extruderIds[self.extruderValueWithDefault(str(global_stack.getProperty("support_roof_extruder_nr", "value")))])
 
         # The platform adhesion extruder. Not used if using none.
-        if global_stack.getProperty("adhesion_type", "value") != "none":
+        if (global_stack.getProperty("adhesion_type", "value") != "none" or
+            global_stack.getProperty("prime_tower_brim_enable", "value")):
             extruder_str_nr = str(global_stack.getProperty("adhesion_extruder_nr", "value"))
             if extruder_str_nr == "-1":
                 extruder_str_nr = self._application.getMachineManager().defaultExtruderPosition

plugins/SliceInfoPlugin/SliceInfo.py

@@ -251,6 +251,7 @@ class SliceInfo(QObject, Extension):
 
             # Prime tower settings
             print_settings["prime_tower_enable"] = global_stack.getProperty("prime_tower_enable", "value")
+            print_settings["prime_tower_brim_enable"] = global_stack.getProperty("prime_tower_brim_enable", "value")
 
             # Infill settings
             print_settings["infill_sparse_density"] = global_stack.getProperty("infill_sparse_density", "value")

resources/definitions/fdmprinter.def.json

@@ -5317,6 +5317,16 @@
                     "settable_per_mesh": false,
                     "settable_per_extruder": true
                 },
+                "prime_tower_brim_enable":
+                {
+                    "label": "Prime Tower Brim",
+                    "description": "Prime-towers might need the extra adhesion afforded by a brim even if the model doesn't.",
+                    "type": "bool",
+                    "enabled": "resolveOrValue('prime_tower_enable')",
+                    "default_value": false,
+                    "settable_per_mesh": false,
+                    "settable_per_extruder": false
+                },
                 "ooze_shield_enabled":
                 {
                     "label": "Enable Ooze Shield",