Update PurgeLinesAndUnload.py

Added purge blob option.
Required changes in some settings to 'self'.
Fixed  'quick_purge_speed' to adjust for 2.85 filament.

plugins/PostProcessingPlugin/scripts/PurgeLinesAndUnload.py

@@ -125,6 +125,23 @@ class PurgeLinesAndUnload(Script):
                     "maximum_value": 12,
                     "enabled": "add_purge_lines"
                 },
+                "prime_blob_enable":
+                {
+                    "label": "    Start with Prime Blob️​",
+                    "description": "Enable a stationary purge before starting the purge lines.  Available only when purge line location is 'left' or 'front'",
+                    "type": "bool",
+                    "default_value": false,
+                    "enabled": "add_purge_lines and purge_line_location in ['front', 'left']"
+                },
+                "prime_blob_distance":
+                {
+                    "label": "        Blob Distance️​",
+                    "description": "How many mm's of filament should be extruded for the blob.",
+                    "type": "int",
+                    "default_value": 0,
+                    "unit": "mm  ",
+                    "enabled": "add_purge_lines and prime_blob_enable and purge_line_location in ['front', 'left']"
+                },
                 "move_to_start":
                 {
                     "label": "Circle around to layer start  ⚠️​",
@@ -214,6 +231,11 @@ class PurgeLinesAndUnload(Script):
         # The start location changes according to which quadrant the nozzle is in at the beginning
         self.end_purge_location = self._get_real_start_point(data[1])
         self.border_distance = self.getSettingValueByKey("border_distance")
+        self.prime_blob_enable = self.getSettingValueByKey("prime_blob_enable")
+        if self.prime_blob_enable:
+            self.prime_blob_distance = self.getSettingValueByKey("prime_blob_distance")
+        else:
+            self.prime_blob_distance = 0
 
         # Mapping settings to corresponding methods
         procedures = {
@@ -295,7 +317,7 @@ class PurgeLinesAndUnload(Script):
                         if startup[index + 1].startswith("G0"):
                             prime_move = startup[index + 1] + " ; Move to Prime Tower"
                             adjustment_lines = self._move_to_location("Prime Tower", prime_tower_loc)
-                            startup[index + 1] = adjustment_lines + prime_move + "\n" + startup[index]
+                            startup[index + 1] = adjustment_lines + prime_move + "\n;---------------------[End of Prime Tower moves]\n" + startup[index]
                             startup.pop(index)
                             first_section[1] = "\n".join(startup)
                             move_to_prime_present = True
@@ -443,6 +465,7 @@ class PurgeLinesAndUnload(Script):
         purge_location = self.getSettingValueByKey("purge_line_location")
         purge_extrusion_full = True if self.getSettingValueByKey("purge_line_length") == "purge_full" else False
         purge_str = ";TYPE:CUSTOM----------[Purge Lines]\nG0 F600 Z2 ; Move up\nG92 E0 ; Reset extruder\n"
+        purge_str += self._get_blob_code()
         # Normal cartesian printer with origin at the left front corner
         if self.bed_shape == "rectangular" and not self.origin_at_center:
             if purge_location == Location.LEFT:
@@ -562,7 +585,7 @@ class PurgeLinesAndUnload(Script):
                 purge_str += "G0 F600 Z8 ; Move Up\nG4 S1 ; Wait for 1 second\n"
                 # Wipe
                 purge_str += f"G0 F{self.print_speed} X{self.machine_right - 3 - self.border_distance} Y{self.machine_back - 20} Z0.3 ; Slide over and down\n"
-                purge_str += f"G0 X{self.machine_right - 3 - self.border_distance} Y{self.machine_back - 35} ; Wipe\n"
+                purge_str += f"G0 F{self.speed_travel} X{self.machine_right - 3 - self.border_distance} Y{self.machine_back - 35} ; Wipe\n"
                 self.end_purge_location = Position.RIGHT_REAR
             elif purge_location == Location.FRONT:
                 purge_len = int(self.machine_right - self.machine_left - 20) if purge_extrusion_full else int(
@@ -581,7 +604,7 @@ class PurgeLinesAndUnload(Script):
                 purge_str += "G0 F600 Z8 ; Move Up\nG4 S1 ; Wait for 1 second\n"
                 # Wipe
                 purge_str += f"G0 F{self.print_speed} X{self.machine_left + 20} Y{self.machine_front + 3 + self.border_distance} Z0.3 ; Slide over and down\n"
-                purge_str += f"G0 X{self.machine_left + 35} Y{self.machine_front + 3 + self.border_distance} ; Wipe\n"
+                purge_str += f"G0 F{self.print_speed} X{self.machine_left + 35} Y{self.machine_front + 3 + self.border_distance} ; Wipe\n"
                 self.end_purge_location = Position.LEFT_FRONT
             elif purge_location == Location.REAR:
                 purge_len = int(self.machine_right - self.machine_left - 20) if purge_extrusion_full else abs(
@@ -601,7 +624,7 @@ class PurgeLinesAndUnload(Script):
                 purge_str += "G0 F600 Z8 ; Move Up\nG4 S1 ; Wait for 1 second\n"
                 # Wipe
                 purge_str += f"G0 F{self.print_speed} X{self.machine_right - 20} Y{self.machine_back - 3 - self.border_distance} Z0.3 ; Slide over and down\n"
-                purge_str += f"G0 X{self.machine_right - 35} Y{self.machine_back - 3 - self.border_distance} ; Wipe\n"
+                purge_str += f"G0 F{self.print_speed} X{self.machine_right - 35} Y{self.machine_back - 3 - self.border_distance} ; Wipe\n"
                 self.end_purge_location = Position.RIGHT_REAR
         # Elliptic printers with Origin at Center
         elif self.bed_shape == "elliptic":
@@ -788,7 +811,8 @@ class PurgeLinesAndUnload(Script):
     # Unloading a large amount of filament in a single command can trip the 'Overlong Extrusion' warning in some firmware.  Unloads longer than 150mm are split into individual 150mm segments.
     def _unload_filament(self, data: str) -> str:
         extrude_speed = 3000
-        quick_purge_speed = round(float(self.extruder[0].getProperty("machine_nozzle_size", "value")) * 500)
+        quick_purge_speed = round(float(self.nozzle_size) * 500)
+        if self.material_diameter > 2: quick_purge_speed *= .38 # Adjustment for 2.85 filament
         retract_amount = self.extruder[0].getProperty("retraction_amount", "value")
         quick_purge_amount = retract_amount + 5 if retract_amount < 2.0 else retract_amount * 2
         unload_distance = self.getSettingValueByKey("unload_distance")
@@ -875,17 +899,33 @@ class PurgeLinesAndUnload(Script):
         else:
             self.nozzle_offset_x = 0.0
             self.nozzle_offset_y = 0.0
-        material_diameter = self.extruder[num].getProperty("material_diameter", "value")
+        self.material_diameter = self.extruder[num].getProperty("material_diameter", "value")
+        self.nozzle_size = self.extruder[num].getProperty("machine_nozzle_size", "value")
         self.init_line_width = self.extruder[num].getProperty("skirt_brim_line_width", "value")
         self.print_speed = round(self.extruder[num].getProperty("speed_print", "value") * 60 * .75)
         self.speed_travel = round(self.extruder[num].getProperty("speed_travel", "value") * 60)
         self.retract_dist = self.extruder[num].getProperty("retraction_amount", "value")
         self.retraction_enable = self.extruder[num].getProperty("retraction_enable", "value")
         self.retract_speed = self.extruder[num].getProperty("retraction_retract_speed", "value") * 60
-        self.mm3_per_mm = (material_diameter / 2) ** 2 * math.pi
+        self.mm3_per_mm = (self.material_diameter / 2) ** 2 * math.pi
         # Don't add purge lines if 'T0' has offsets.
         t0_x_offset = self.extruder[0].getProperty("machine_nozzle_offset_x", "value")
         t0_y_offset = self.extruder[0].getProperty("machine_nozzle_offset_y", "value")
         if t0_x_offset or t0_y_offset:
             self.t0_has_offsets = True
         return num
+
+    def _get_blob_code(self) -> str:
+        if not self.prime_blob_enable or self.prime_blob_distance == 0 or self.getSettingValueByKey("purge_line_location") not in ["front", "left"]:
+            return ""
+        # Set extruder speed for 1.75 filament
+        speed_blob = round(float(self.nozzle_size) * 500)
+        # Adjust speed if 2.85 filament
+        if self.material_diameter > 2: speed_blob *= .4
+        blob_string = "G0 F1200 Z20 ; Move up\n"
+        blob_string += f"G1 F{speed_blob} E{self.prime_blob_distance} ; Blob\n"
+        blob_string += f"G1 F{self.retract_speed} E-{self.retract_dist} ; Retract\n"
+        blob_string += "G92 E0 ; Reset extruder\n"
+        blob_string += "M300 P500 S600 ; Beep\n"
+        blob_string += "G4 S2 ; Wait\n"
+        return blob_string