Merge pull request #3299 from Ultimaker/feature_circular_prime_tower

Circular prime tower functionality

Looks good Diego!

cura/BuildVolume.py

@@ -737,12 +737,17 @@ 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
 
-            prime_tower_area = Polygon([
-                [prime_tower_x - prime_tower_size, prime_tower_y - prime_tower_size],
-                [prime_tower_x, prime_tower_y - prime_tower_size],
-                [prime_tower_x, prime_tower_y],
-                [prime_tower_x - prime_tower_size, prime_tower_y],
-            ])
+            if self._global_container_stack.getProperty("prime_tower_circular", "value"):
+                radius = prime_tower_size / 2
+                prime_tower_area = Polygon.approximatedCircle(radius)
+                prime_tower_area = prime_tower_area.translate(prime_tower_x - radius, prime_tower_y - radius)
+            else:
+                prime_tower_area = Polygon([
+                    [prime_tower_x - prime_tower_size, prime_tower_y - prime_tower_size],
+                    [prime_tower_x, prime_tower_y - prime_tower_size],
+                    [prime_tower_x, prime_tower_y],
+                    [prime_tower_x - prime_tower_size, prime_tower_y],
+                ])
             prime_tower_area = prime_tower_area.getMinkowskiHull(Polygon.approximatedCircle(0))
             for extruder in used_extruders:
                 result[extruder.getId()].append(prime_tower_area) #The prime tower location is the same for each extruder, regardless of offset.
@@ -1023,7 +1028,7 @@ 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_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"]
     _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"]
     _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.

resources/definitions/fdmprinter.def.json

@@ -4747,6 +4747,17 @@
                     "settable_per_mesh": false,
                     "settable_per_extruder": false
                 },
+                "prime_tower_circular":
+                {
+                    "label": "Circular Prime Tower",
+                    "description": "Make the prime tower as a circular shape.",
+                    "type": "bool",
+                    "enabled": "resolveOrValue('prime_tower_enable')",
+                    "default_value": true,
+                    "resolve": "any(extruderValues('prime_tower_circular'))",
+                    "settable_per_mesh": false,
+                    "settable_per_extruder": false
+                },
                 "prime_tower_size":
                 {
                     "label": "Prime Tower Size",
@@ -4770,8 +4781,9 @@
                     "unit": "mm³",
                     "type": "float",
                     "default_value": 10,
+                    "value": "8.48 if prime_tower_circular else 10",
                     "minimum_value": "0",
-                    "maximum_value_warning": "resolveOrValue('prime_tower_size') ** 2 * resolveOrValue('layer_height')",
+                    "maximum_value_warning": "round((resolveOrValue('prime_tower_size') * 0.5) ** 2 * 3.14159 * resolveOrValue('layer_height'), 2) if prime_tower_circular else resolveOrValue('prime_tower_size') ** 2 * resolveOrValue('layer_height')",
                     "enabled": "resolveOrValue('prime_tower_enable')",
                     "settable_per_mesh": false,
                     "settable_per_extruder": true,
@@ -4784,7 +4796,7 @@
                             "unit": "mm",
                             "type": "float",
                             "default_value": 2,
-                            "value": "round(max(2 * prime_tower_line_width, 0.5 * (prime_tower_size - math.sqrt(max(0, prime_tower_size ** 2 - prime_tower_min_volume / layer_height)))), 3)",
+                            "value": "round(max(2 * prime_tower_line_width, (0.5 * (prime_tower_size - math.sqrt(max(0, prime_tower_size ** 2 - 4 * prime_tower_min_volume / (3.14159 * layer_height))))) if prime_tower_circular else (0.5 * (prime_tower_size - math.sqrt(max(0, prime_tower_size ** 2 - prime_tower_min_volume / layer_height))))), 3)",
                             "resolve": "max(extruderValues('prime_tower_wall_thickness'))",
                             "minimum_value": "0.001",
                             "minimum_value_warning": "2 * min(extruderValues('prime_tower_line_width')) - 0.0001",