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@@ -0,0 +1,75 @@
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+# Copyright (c) 2019 Ultimaker B.V.
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+# The PostProcessingPlugin is released under the terms of the AGPLv3 or higher.
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+
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+import math
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+
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+from ..Script import Script
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+
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+## Continues retracting during all travel moves.
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+class RetractContinue(Script):
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+ def getSettingDataString(self):
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+ return """{
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+ "name": "Retract Continue",
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+ "key": "RetractContinue",
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+ "metadata": {},
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+ "version": 2,
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+ "settings":
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+ {
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+ "extra_retraction_speed":
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+ {
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+ "label": "Extra Retraction Ratio",
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+ "description": "How much does it retract during the travel move, by ratio of the travel length.",
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+ "type": "float",
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+ "default_value": 0.05
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+ }
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+ }
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+ }"""
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+
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+ def execute(self, data):
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+ current_e = 0
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+ current_x = 0
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+ current_y = 0
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+ extra_retraction_speed = self.getSettingValueByKey("extra_retraction_speed")
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+
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+ for layer_number, layer in enumerate(data):
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+ lines = layer.split("\n")
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+ for line_number, line in enumerate(lines):
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+ if self.getValue(line, "G") in {0, 1}: # Track X,Y location.
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+ current_x = self.getValue(line, "X", current_x)
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+ current_y = self.getValue(line, "Y", current_y)
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+ if self.getValue(line, "G") == 1:
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+ if self.getValue(line, "E"):
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+ new_e = self.getValue(line, "E")
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+ if new_e >= current_e: # Not a retraction.
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+ continue
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+ # A retracted travel move may consist of multiple commands, due to combing.
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+ # This continues retracting over all of these moves and only unretracts at the end.
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+ delta_line = 1
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+ dx = current_x # Track the difference in X for this move only to compute the length of the travel.
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+ dy = current_y
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+ while line_number + delta_line < len(lines) and self.getValue(lines[line_number + delta_line], "G") != 1:
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+ travel_move = lines[line_number + delta_line]
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+ if self.getValue(travel_move, "G") != 0:
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+ delta_line += 1
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+ continue
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+ travel_x = self.getValue(travel_move, "X", dx)
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+ travel_y = self.getValue(travel_move, "Y", dy)
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+ f = self.getValue(travel_move, "F", "no f")
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+ length = math.sqrt((travel_x - dx) * (travel_x - dx) + (travel_y - dy) * (travel_y - dy)) # Length of the travel move.
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+ new_e -= length * extra_retraction_speed # New retraction is by ratio of this travel move.
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+ if f == "no f":
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+ new_travel_move = "G1 X{travel_x} Y{travel_y} E{new_e}".format(travel_x = travel_x, travel_y = travel_y, new_e = new_e)
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+ else:
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+ new_travel_move = "G1 F{f} X{travel_x} Y{travel_y} E{new_e}".format(f = f, travel_x = travel_x, travel_y = travel_y, new_e = new_e)
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+ lines[line_number + delta_line] = new_travel_move
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+
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+ delta_line += 1
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+ dx = travel_x
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+ dy = travel_y
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+
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+ current_e = new_e
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+
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+ new_layer = "\n".join(lines)
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+ data[layer_number] = new_layer
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+
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+ return data
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Jaime van Kessel