Cura/util/validators.py

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