Cura/util/validators.py

   1 from __future__ import absolute_import
   2 from __future__ import division
   3 __copyright__ = "Copyright (C) 2013 David Braam - Released under terms of the AGPLv3 License"
   4
   5 import types
   6 import math
   7
   8 SUCCESS = 0
   9 WARNING = 1
  10 ERROR   = 2
  11
  12 class validFloat(object):
  13         def __init__(self, setting, minValue = None, maxValue = None):
  14                 self.setting = setting
  15                 self.setting._validators.append(self)
  16                 self.minValue = minValue
  17                 self.maxValue = maxValue
  18
  19         def validate(self):
  20                 try:
  21                         f = float(eval(self.setting.getValue().replace(',','.'), {}, {}))
  22                         if self.minValue is not None and f < self.minValue:
  23                                 return ERROR, 'This setting should not be below ' + str(round(self.minValue, 3))
  24                         if self.maxValue is not None and f > self.maxValue:
  25                                 return ERROR, 'This setting should not be above ' + str(self.maxValue)
  26                         return SUCCESS, ''
  27                 except (ValueError, SyntaxError, TypeError, NameError):
  28                         return ERROR, '"' + str(self.setting.getValue()) + '" is not a valid number or expression'
  29
  30 class validInt(object):
  31         def __init__(self, setting, minValue = None, maxValue = None):
  32                 self.setting = setting
  33                 self.setting._validators.append(self)
  34                 self.minValue = minValue
  35                 self.maxValue = maxValue
  36
  37         def validate(self):
  38                 try:
  39                         f = int(eval(self.setting.getValue(), {}, {}))
  40                         if self.minValue is not None and f < self.minValue:
  41                                 return ERROR, 'This setting should not be below ' + str(self.minValue)
  42                         if self.maxValue is not None and f > self.maxValue:
  43                                 return ERROR, 'This setting should not be above ' + str(self.maxValue)
  44                         return SUCCESS, ''
  45                 except (ValueError, SyntaxError, TypeError, NameError):
  46                         return ERROR, '"' + str(self.setting.getValue()) + '" is not a valid whole number or expression'
  47
  48 class warningAbove(object):
  49         def __init__(self, setting, minValueForWarning, warningMessage):
  50                 self.setting = setting
  51                 self.setting._validators.append(self)
  52                 self.minValueForWarning = minValueForWarning
  53                 self.warningMessage = warningMessage
  54
  55         def validate(self):
  56                 try:
  57                         f = float(eval(self.setting.getValue().replace(',','.'), {}, {}))
  58                         if isinstance(self.minValueForWarning, types.FunctionType):
  59                                 if f >= self.minValueForWarning():
  60                                         return WARNING, self.warningMessage % (self.minValueForWarning())
  61                         else:
  62                                 if f >= self.minValueForWarning:
  63                                         return WARNING, self.warningMessage
  64                         return SUCCESS, ''
  65                 except (ValueError, SyntaxError, TypeError):
  66                         #We already have an error by the int/float validator in this case.
  67                         return SUCCESS, ''
  68
  69 class wallThicknessValidator(object):
  70         def __init__(self, setting):
  71                 self.setting = setting
  72                 self.setting._validators.append(self)
  73
  74         def validate(self):
  75                 from Cura.util import profile
  76                 try:
  77                         wallThickness = profile.getProfileSettingFloat('wall_thickness')
  78                         nozzleSize = profile.getProfileSettingFloat('nozzle_size')
  79                         if wallThickness <= nozzleSize * 0.5:
  80                                 return ERROR, 'Trying to print walls thinner then the half of your nozzle size, this will not produce anything usable'
  81                         if wallThickness <= nozzleSize * 0.85:
  82                                 return WARNING, 'Trying to print walls thinner then the 0.8 * nozzle size. Small chance that this will produce usable results'
  83                         if wallThickness < nozzleSize:
  84                                 return SUCCESS, ''
  85                         if nozzleSize <= 0:
  86                                 return ERROR, 'Incorrect nozzle size'
  87
  88                         lineCount = int(wallThickness / nozzleSize)
  89                         lineWidth = wallThickness / lineCount
  90                         lineWidthAlt = wallThickness / (lineCount + 1)
  91                         if lineWidth >= nozzleSize * 1.5 and lineWidthAlt <= nozzleSize * 0.85:
  92                                 return WARNING, 'Current selected wall thickness results in a line thickness of ' + str(lineWidthAlt) + 'mm which is not recommended with your nozzle of ' + str(nozzleSize) + 'mm'
  93                         return SUCCESS, ''
  94                 except ValueError:
  95                         #We already have an error by the int/float validator in this case.
  96                         return SUCCESS, ''
  97
  98 class printSpeedValidator(object):
  99         def __init__(self, setting):
 100                 self.setting = setting
 101                 self.setting._validators.append(self)
 102
 103         def validate(self):
 104                 from Cura.util import profile
 105                 try:
 106                         nozzleSize = profile.getProfileSettingFloat('nozzle_size')
 107                         layerHeight = profile.getProfileSettingFloat('layer_height')
 108                         printSpeed = profile.getProfileSettingFloat('print_speed')
 109
 110                         printVolumePerMM = layerHeight * nozzleSize
 111                         printVolumePerSecond = printVolumePerMM * printSpeed
 112                         #Using 10mm3 per second with a 0.4mm nozzle (normal max according to Joergen Geerds)
 113                         maxPrintVolumePerSecond = 10 / (math.pi*(0.2*0.2)) * (math.pi*(nozzleSize/2*nozzleSize/2))
 114
 115                         if printVolumePerSecond > maxPrintVolumePerSecond:
 116                                 return WARNING, 'You are trying to print more then %.1fmm^3 of filament per second. This might cause filament slipping. (You are printing at %0.1fmm^3 per second)' % (maxPrintVolumePerSecond, printVolumePerSecond)
 117
 118                         return SUCCESS, ''
 119                 except ValueError:
 120                         #We already have an error by the int/float validator in this case.
 121                         return SUCCESS, ''
 122