# 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