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- # Copyright (c) 2019 Ultimaker B.V.
- # The PostProcessingPlugin is released under the terms of the AGPLv3 or higher.
- import math
- from ..Script import Script
- class RetractContinue(Script):
- """Continues retracting during all travel moves."""
- def getSettingDataString(self):
- return """{
- "name": "Retract Continue",
- "key": "RetractContinue",
- "metadata": {},
- "version": 2,
- "settings":
- {
- "extra_retraction_speed":
- {
- "label": "Extra Retraction Ratio",
- "description": "How much does it retract during the travel move, by ratio of the travel length.",
- "type": "float",
- "default_value": 0.05
- }
- }
- }"""
- def execute(self, data):
- current_e = 0
- current_x = 0
- current_y = 0
- current_z = 0
- extra_retraction_speed = self.getSettingValueByKey("extra_retraction_speed")
- for layer_number, layer in enumerate(data):
- lines = layer.split("\n")
- for line_number, line in enumerate(lines):
- if self.getValue(line, "G") in {0, 1}: # Track X,Y,Z location.
- current_x = self.getValue(line, "X", current_x)
- current_y = self.getValue(line, "Y", current_y)
- current_z = self.getValue(line, "Z", current_z)
- if self.getValue(line, "G") == 1:
- if not self.getValue(line, "E"): # Either None or 0: Not a retraction then.
- continue
- new_e = self.getValue(line, "E")
- if new_e - current_e >= -0.0001: # Not a retraction. Account for floating point rounding errors.
- current_e = new_e
- continue
- # A retracted travel move may consist of multiple commands, due to combing.
- # This continues retracting over all of these moves and only unretracts at the end.
- delta_line = 1
- dx = current_x # Track the difference in X for this move only to compute the length of the travel.
- dy = current_y
- dz = current_z
- while line_number + delta_line < len(lines) and self.getValue(lines[line_number + delta_line], "G") != 1:
- travel_move = lines[line_number + delta_line]
- if self.getValue(travel_move, "G") != 0:
- delta_line += 1
- continue
- travel_x = self.getValue(travel_move, "X", dx)
- travel_y = self.getValue(travel_move, "Y", dy)
- travel_z = self.getValue(travel_move, "Z", dz)
- f = self.getValue(travel_move, "F", "no f")
- length = math.sqrt((travel_x - dx) * (travel_x - dx) + (travel_y - dy) * (travel_y - dy) + (travel_z - dz) * (travel_z - dz)) # Length of the travel move.
- new_e -= length * extra_retraction_speed # New retraction is by ratio of this travel move.
- if f == "no f":
- new_travel_move = "G1 X{travel_x} Y{travel_y} Z{travel_z} E{new_e}".format(travel_x = travel_x, travel_y = travel_y, travel_z = travel_z, new_e = new_e)
- else:
- new_travel_move = "G1 F{f} X{travel_x} Y{travel_y} Z{travel_z} E{new_e}".format(f = f, travel_x = travel_x, travel_y = travel_y, travel_z = travel_z, new_e = new_e)
- lines[line_number + delta_line] = new_travel_move
- delta_line += 1
- dx = travel_x
- dy = travel_y
- dz = travel_z
- current_e = new_e
- new_layer = "\n".join(lines)
- data[layer_number] = new_layer
- return data
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