# ColorMix script - 2-1 extruder color mix and blending
# This script is specific for the Geeetech A10M dual extruder but should work with other Marlin printers.
# It runs with the PostProcessingPlugin which is released under the terms of the LGPLv3 or higher.
# This script is licensed under the Creative Commons - Attribution - Share Alike (CC BY-SA) terms
#Authors of the 2-1 ColorMix plug-in / script:
# Written by John Hryb - john.hryb.4@gmail.com
#history / change-log:
#V1.0.0 - Initial
#V1.1.0 -
# additions:
#Object number - To select individual models or all when using "one at a time" print sequence
#V1.2.0
# fixed layer heights Cura starts at 1 while G-code starts at 0
# removed notes
# changed Units of measurement to Units
#V1.2.1
# Fixed mm bug when not in multiples of layer height
# Uses -
# M163 - Set Mix Factor
# M164 - Save Mix - saves to T2 as a unique mix
import re #To perform the search and replace.
from ..Script import Script
class ColorMix(Script):
def __init__(self):
super().__init__()
def getSettingDataString(self):
return """{
"name":"ColorMix 2-1 V1.2.1",
"key":"ColorMix 2-1",
"metadata": {},
"version": 2,
"settings":
{
"units_of_measurement":
{
"label": "Units",
"description": "Input value as mm or layer number.",
"type": "enum",
"options": {"mm":"mm","layer":"Layer"},
"default_value": "layer"
},
"object_number":
{
"label": "Object Number",
"description": "Select model to apply to for print one at a time print sequence. 0 = everything",
"type": "int",
"default_value": 0,
"minimum_value": "0"
},
"start_height":
{
"label": "Start Height",
"description": "Value to start at (mm or layer)",
"type": "float",
"default_value": 0,
"minimum_value": "0"
},
"behavior":
{
"label": "Fixed or blend",
"description": "Select Fixed (set new mixture) or Blend mode (dynamic mix)",
"type": "enum",
"options": {"fixed_value":"Fixed","blend_value":"Blend"},
"default_value": "fixed_value"
},
"finish_height":
{
"label": "Finish Height",
"description": "Value to stop at (mm or layer)",
"type": "float",
"default_value": 0,
"minimum_value": "0",
"minimum_value_warning": "start_height",
"enabled": "behavior == 'blend_value'"
},
"mix_start":
{
"label": "Start mix ratio",
"description": "First extruder percentage 0-100",
"type": "float",
"default_value": 100,
"minimum_value": "0",
"minimum_value_warning": "0",
"maximum_value_warning": "100"
},
"mix_finish":
{
"label": "End mix ratio",
"description": "First extruder percentage 0-100 to finish blend",
"type": "float",
"default_value": 0,
"minimum_value": "0",
"minimum_value_warning": "0",
"maximum_value_warning": "100",
"enabled": "behavior == 'blend_value'"
}
}
}"""
def getValue(self, line, key, default = None): #replace default getvalue due to comment-reading feature
if not key in line or (";" in line and line.find(key) > line.find(";") and
not ";ChangeAtZ" in key and not ";LAYER:" in key):
return default
subPart = line[line.find(key) + len(key):] #allows for string lengths larger than 1
if ";ChangeAtZ" in key:
m = re.search("^[0-4]", subPart)
elif ";LAYER:" in key:
m = re.search("^[+-]?[0-9]*", subPart)
else:
#the minus at the beginning allows for negative values, e.g. for delta printers
m = re.search("^[-]?[0-9]*\.?[0-9]*", subPart)
if m == None:
return default
try:
return float(m.group(0))
except:
return default
def execute(self, data):
firstHeight = self.getSettingValueByKey("start_height")
secondHeight = self.getSettingValueByKey("finish_height")
firstMix = self.getSettingValueByKey("mix_start")
secondMix = self.getSettingValueByKey("mix_finish")
modelOfInterest = self.getSettingValueByKey("object_number")
#get layer height
layerHeight = 0
for active_layer in data:
lines = active_layer.split("\n")
for line in lines:
if ";Layer height: " in line:
layerHeight = self.getValue(line, ";Layer height: ", layerHeight)
break
if layerHeight != 0:
break
#default layerHeight if not found
if layerHeight == 0:
layerHeight = .2
#get layers to use
startLayer = 0
endLayer = 0
if self.getSettingValueByKey("units_of_measurement") == "mm":
startLayer = round(firstHeight / layerHeight)
endLayer = round(secondHeight / layerHeight)
else: #layer height shifts down by one for g-code
if firstHeight <= 0:
firstHeight = 1
if secondHeight <= 0:
secondHeight = 1
startLayer = firstHeight - 1
endLayer = secondHeight - 1
#see if one-shot
if self.getSettingValueByKey("behavior") == "fixed_value":
endLayer = startLayer
firstExtruderIncrements = 0
else: #blend
firstExtruderIncrements = (secondMix - firstMix) / (endLayer - startLayer)
firstExtruderValue = 0
index = 0
#start scanning
layer = -1
modelNumber = 0
for active_layer in data:
modified_gcode = ""
lineIndex = 0
lines = active_layer.split("\n")
for line in lines:
#dont leave blanks
if line != "":
modified_gcode += line + "\n"
# find current layer
if ";LAYER:" in line:
layer = self.getValue(line, ";LAYER:", layer)
#get model number by layer 0 repeats
if layer == 0:
modelNumber = modelNumber + 1
#search for layers to manipulate
if (layer >= startLayer) and (layer <= endLayer):
#make sure correct model is selected
if (modelOfInterest == 0) or (modelOfInterest == modelNumber):
#Delete old data if required
if lines[lineIndex + 4] == "T2":
del lines[(lineIndex + 1):(lineIndex + 5)]
#add mixing commands
firstExtruderValue = int(((layer - startLayer) * firstExtruderIncrements) + firstMix)
if firstExtruderValue == 100:
modified_gcode += "M163 S0 P1\n"
modified_gcode += "M163 S1 P0\n"
elif firstExtruderValue == 0:
modified_gcode += "M163 S0 P0\n"
modified_gcode += "M163 S1 P1\n"
else:
modified_gcode += "M163 S0 P0.{:02d}\n".format(firstExtruderValue)
modified_gcode += "M163 S1 P0.{:02d}\n".format(100 - firstExtruderValue)
modified_gcode += "M164 S2\n"
modified_gcode += "T2\n"
lineIndex += 1 #for deleting index
data[index] = modified_gcode
index += 1
return data