# Copyright (c) 2018 Ultimaker B.V.
# Cura is released under the terms of the LGPLv3 or higher.
from ..Script import Script
from UM.Application import Application #To get the current printer's settings.
class PauseAtHeight(Script):
def __init__(self):
super().__init__()
def getSettingDataString(self):
return """{
"name": "Pause at height",
"key": "PauseAtHeight",
"metadata": {},
"version": 2,
"settings":
{
"pause_at":
{
"label": "Pause at",
"description": "Whether to pause at a certain height or at a certain layer.",
"type": "enum",
"options": {"height": "Height", "layer_no": "Layer No."},
"default_value": "height"
},
"pause_height":
{
"label": "Pause Height",
"description": "At what height should the pause occur?",
"unit": "mm",
"type": "float",
"default_value": 5.0,
"minimum_value": "0",
"minimum_value_warning": "0.27",
"enabled": "pause_at == 'height'"
},
"pause_layer":
{
"label": "Pause Layer",
"description": "At what layer should the pause occur?",
"type": "int",
"value": "math.floor((pause_height - 0.27) / 0.1) + 1",
"minimum_value": "0",
"minimum_value_warning": "1",
"enabled": "pause_at == 'layer_no'"
},
"head_park_x":
{
"label": "Park Print Head X",
"description": "What X location does the head move to when pausing.",
"unit": "mm",
"type": "float",
"default_value": 190
},
"head_park_y":
{
"label": "Park Print Head Y",
"description": "What Y location does the head move to when pausing.",
"unit": "mm",
"type": "float",
"default_value": 190
},
"retraction_amount":
{
"label": "Retraction",
"description": "How much filament must be retracted at pause.",
"unit": "mm",
"type": "float",
"default_value": 0
},
"retraction_speed":
{
"label": "Retraction Speed",
"description": "How fast to retract the filament.",
"unit": "mm/s",
"type": "float",
"default_value": 25
},
"extrude_amount":
{
"label": "Extrude Amount",
"description": "How much filament should be extruded after pause. This is needed when doing a material change on Ultimaker2's to compensate for the retraction after the change. In that case 128+ is recommended.",
"unit": "mm",
"type": "float",
"default_value": 0
},
"extrude_speed":
{
"label": "Extrude Speed",
"description": "How fast to extrude the material after pause.",
"unit": "mm/s",
"type": "float",
"default_value": 3.3333
},
"redo_layers":
{
"label": "Redo Layers",
"description": "Redo a number of previous layers after a pause to increases adhesion.",
"unit": "layers",
"type": "int",
"default_value": 0
},
"standby_temperature":
{
"label": "Standby Temperature",
"description": "Change the temperature during the pause",
"unit": "°C",
"type": "int",
"default_value": 0
}
}
}"""
def getNextXY(self, layer: str):
"""
Get the X and Y values for a layer (will be used to get X and Y of
the layer after the pause
"""
lines = layer.split("\n")
for line in lines:
if self.getValue(line, "X") is not None and self.getValue(line, "Y") is not None:
x = self.getValue(line, "X")
y = self.getValue(line, "Y")
return x, y
return 0, 0
def execute(self, data: list):
"""data is a list. Each index contains a layer"""
pause_at = self.getSettingValueByKey("pause_at")
pause_height = self.getSettingValueByKey("pause_height")
pause_layer = self.getSettingValueByKey("pause_layer")
retraction_amount = self.getSettingValueByKey("retraction_amount")
retraction_speed = self.getSettingValueByKey("retraction_speed")
extrude_amount = self.getSettingValueByKey("extrude_amount")
extrude_speed = self.getSettingValueByKey("extrude_speed")
park_x = self.getSettingValueByKey("head_park_x")
park_y = self.getSettingValueByKey("head_park_y")
layers_started = False
redo_layers = self.getSettingValueByKey("redo_layers")
standby_temperature = self.getSettingValueByKey("standby_temperature")
firmware_retract = Application.getInstance().getGlobalContainerStack().getProperty("machine_firmware_retract", "value")
control_temperatures = Application.getInstance().getGlobalContainerStack().getProperty("machine_nozzle_temp_enabled", "value")
initial_layer_height = Application.getInstance().getGlobalContainerStack().getProperty("layer_height_0", "value")
is_griffin = False
# T = ExtruderManager.getInstance().getActiveExtruderStack().getProperty("material_print_temperature", "value")
# use offset to calculate the current height: <current_height> = <current_z> - <layer_0_z>
layer_0_z = 0
current_z = 0
got_first_g_cmd_on_layer_0 = False
current_t = 0 #Tracks the current extruder for tracking the target temperature.
target_temperature = {} #Tracks the current target temperature for each extruder.
nbr_negative_layers = 0
for index, layer in enumerate(data):
lines = layer.split("\n")
# Scroll each line of instruction for each layer in the G-code
for line in lines:
if ";FLAVOR:Griffin" in line:
is_griffin = True
# Fist positive layer reached
if ";LAYER:0" in line:
layers_started = True
# Count nbr of negative layers (raft)
elif ";LAYER:-" in line:
nbr_negative_layers += 1
#Track the latest printing temperature in order to resume at the correct temperature.
if line.startswith("T"):
current_t = self.getValue(line, "T")
m = self.getValue(line, "M")
if m is not None and (m == 104 or m == 109) and self.getValue(line, "S") is not None:
extruder = current_t
if self.getValue(line, "T") is not None:
extruder = self.getValue(line, "T")
target_temperature[extruder] = self.getValue(line, "S")
if not layers_started:
continue
# If a Z instruction is in the line, read the current Z
if self.getValue(line, "Z") is not None:
current_z = self.getValue(line, "Z")
if pause_at == "height":
# Ignore if the line is not G1 or G0
if self.getValue(line, "G") != 1 and self.getValue(line, "G") != 0:
continue
# This block is executed once, the first time there is a G
# command, to get the z offset (z for first positive layer)
if not got_first_g_cmd_on_layer_0:
layer_0_z = current_z - initial_layer_height
got_first_g_cmd_on_layer_0 = True
current_height = current_z - layer_0_z
if current_height < pause_height:
break # Try the next layer.
# Pause at layer
else:
if not line.startswith(";LAYER:"):
continue
current_layer = line[len(";LAYER:"):]
try:
current_layer = int(current_layer)
# Couldn't cast to int. Something is wrong with this
# g-code data
except ValueError:
continue
if current_layer < pause_layer - nbr_negative_layers:
continue
# Get X and Y from the next layer (better position for
# the nozzle)
next_layer = data[index + 1]
x, y = self.getNextXY(next_layer)
prev_layer = data[index - 1]
prev_lines = prev_layer.split("\n")
current_e = 0.
# Access last layer, browse it backwards to find
# last extruder absolute position
for prevLine in reversed(prev_lines):
current_e = self.getValue(prevLine, "E", -1)
if current_e >= 0:
break
# include a number of previous layers
for i in range(1, redo_layers + 1):
prev_layer = data[index - i]
layer = prev_layer + layer
# Get extruder's absolute position at the
# beginning of the first layer redone
# see https://github.com/nallath/PostProcessingPlugin/issues/55
if i == redo_layers:
# Get X and Y from the next layer (better position for
# the nozzle)
x, y = self.getNextXY(layer)
prev_lines = prev_layer.split("\n")
for line in prev_lines:
new_e = self.getValue(line, 'E', current_e)
if new_e != current_e:
current_e = new_e
break
prepend_gcode = ";TYPE:CUSTOM\n"
prepend_gcode += ";added code by post processing\n"
prepend_gcode += ";script: PauseAtHeight.py\n"
if pause_at == "height":
prepend_gcode += ";current z: {z}\n".format(z = current_z)
prepend_gcode += ";current height: {height}\n".format(height = current_height)
else:
prepend_gcode += ";current layer: {layer}\n".format(layer = current_layer)
if not is_griffin:
# Retraction
prepend_gcode += self.putValue(M = 83) + "\n"
if retraction_amount != 0:
if firmware_retract: #Can't set the distance directly to what the user wants. We have to choose ourselves.
retraction_count = 1 if control_temperatures else 3 #Retract more if we don't control the temperature.
for i in range(retraction_count):
prepend_gcode += self.putValue(G = 10) + "\n"
else:
prepend_gcode += self.putValue(G = 1, E = -retraction_amount, F = retraction_speed * 60) + "\n"
# Move the head away
prepend_gcode += self.putValue(G = 1, Z = current_z + 1, F = 300) + "\n"
# This line should be ok
prepend_gcode += self.putValue(G = 1, X = park_x, Y = park_y, F = 9000) + "\n"
if current_z < 15:
prepend_gcode += self.putValue(G = 1, Z = 15, F = 300) + "\n"
if control_temperatures:
# Set extruder standby temperature
prepend_gcode += self.putValue(M = 104, S = standby_temperature) + "; standby temperature\n"
# Wait till the user continues printing
prepend_gcode += self.putValue(M = 0) + ";Do the actual pause\n"
if not is_griffin:
if control_temperatures:
# Set extruder resume temperature
prepend_gcode += self.putValue(M = 109, S = int(target_temperature.get(current_t, 0))) + "; resume temperature\n"
# Push the filament back,
if retraction_amount != 0:
prepend_gcode += self.putValue(G = 1, E = retraction_amount, F = retraction_speed * 60) + "\n"
# Optionally extrude material
if extrude_amount != 0:
prepend_gcode += self.putValue(G = 1, E = extrude_amount, F = extrude_speed * 60) + "\n"
# and retract again, the properly primes the nozzle
# when changing filament.
if retraction_amount != 0:
prepend_gcode += self.putValue(G = 1, E = -retraction_amount, F = retraction_speed * 60) + "\n"
# Move the head back
prepend_gcode += self.putValue(G = 1, Z = current_z + 1, F = 300) + "\n"
prepend_gcode += self.putValue(G = 1, X = x, Y = y, F = 9000) + "\n"
if retraction_amount != 0:
if firmware_retract: #Can't set the distance directly to what the user wants. We have to choose ourselves.
retraction_count = 1 if control_temperatures else 3 #Retract more if we don't control the temperature.
for i in range(retraction_count):
prepend_gcode += self.putValue(G = 11) + "\n"
else:
prepend_gcode += self.putValue(G = 1, E = retraction_amount, F = retraction_speed * 60) + "\n"
prepend_gcode += self.putValue(G = 1, F = 9000) + "\n"
prepend_gcode += self.putValue(M = 82) + "\n"
# reset extrude value to pre pause value
prepend_gcode += self.putValue(G = 92, E = current_e) + "\n"
layer = prepend_gcode + layer
# Override the data of this layer with the
# modified data
data[index] = layer
return data
return data