Cura/gui/tools/imageToMesh.py

   1 __copyright__ = "Copyright (C) 2013 David Braam - Released under terms of the AGPLv3 License"
   2
   3 import wx
   4 import numpy
   5
   6 from Cura.util import mesh
   7
   8 def supportedExtensions():
   9         return ['.bmp', '.jpg', '.jpeg', '.png']
  10
  11 def wildcardList():
  12         return ';'.join(map(lambda s: '*' + s, supportedExtensions()))
  13
  14 class convertImageDialog(wx.Dialog):
  15         def __init__(self, parent, filename):
  16                 super(convertImageDialog, self).__init__(None, title="Convert image...")
  17                 wx.EVT_CLOSE(self, self.OnClose)
  18                 self.parent = parent
  19                 self.filename = filename
  20
  21                 image = wx.Image(filename)
  22                 w, h = image.GetWidth() - 1, image.GetHeight() - 1
  23                 self.aspectRatio = float(w) / float(h)
  24
  25                 p = wx.Panel(self)
  26                 self.SetSizer(wx.BoxSizer())
  27                 self.GetSizer().Add(p, 1, flag=wx.EXPAND)
  28
  29                 s = wx.GridBagSizer(2, 2)
  30                 p.SetSizer(s)
  31                 s.Add(wx.StaticText(p, -1, _('Height (mm)')), pos=(0, 0), flag=wx.LEFT|wx.TOP|wx.RIGHT, border=5)
  32                 self.heightInput = wx.TextCtrl(p, -1, '10.0')
  33                 s.Add(self.heightInput, pos=(0, 1), flag=wx.LEFT|wx.TOP|wx.RIGHT|wx.EXPAND, border=5)
  34
  35                 s.Add(wx.StaticText(p, -1, _('Width (mm)')), pos=(1, 0), flag=wx.LEFT|wx.TOP|wx.RIGHT, border=5)
  36                 self.widthInput = wx.TextCtrl(p, -1, str(w * 0.3))
  37                 s.Add(self.widthInput, pos=(1, 1), flag=wx.LEFT|wx.TOP|wx.RIGHT|wx.EXPAND, border=5)
  38
  39                 s.Add(wx.StaticText(p, -1, _('Depth (mm)')), pos=(2, 0), flag=wx.LEFT|wx.TOP|wx.RIGHT, border=5)
  40                 self.depthInput = wx.TextCtrl(p, -1, str(h * 0.3))
  41                 s.Add(self.depthInput, pos=(2, 1), flag=wx.LEFT|wx.TOP|wx.RIGHT|wx.EXPAND, border=5)
  42
  43                 options = ['Darker is higher', 'Lighter is higher']
  44                 self.invertInput = wx.ComboBox(p, -1, options[0], choices=options, style=wx.CB_DROPDOWN|wx.CB_READONLY)
  45                 s.Add(self.invertInput, pos=(3, 1), flag=wx.LEFT|wx.TOP|wx.RIGHT|wx.EXPAND, border=5)
  46
  47                 options = ['No smoothing', 'Light smoothing', 'Heavy smoothing']
  48                 self.smoothInput = wx.ComboBox(p, -1, options[0], choices=options, style=wx.CB_DROPDOWN|wx.CB_READONLY)
  49                 s.Add(self.smoothInput, pos=(4, 1), flag=wx.LEFT|wx.TOP|wx.RIGHT|wx.EXPAND, border=5)
  50
  51                 self.okButton = wx.Button(p, -1, 'Ok')
  52                 s.Add(self.okButton, pos=(5, 1), flag=wx.ALL, border=5)
  53
  54                 self.okButton.Bind(wx.EVT_BUTTON, self.OnOkClick)
  55                 self.widthInput.Bind(wx.EVT_TEXT, self.OnWidthEnter)
  56                 self.depthInput.Bind(wx.EVT_TEXT, self.OnDepthEnter)
  57
  58                 self.Fit()
  59                 self.Centre()
  60
  61         def OnClose(self, e):
  62                 self.Destroy()
  63
  64         def OnOkClick(self, e):
  65                 self.Close()
  66                 height = float(self.heightInput.GetValue())
  67                 width = float(self.widthInput.GetValue())
  68                 blur = self.smoothInput.GetSelection()
  69                 blur *= blur
  70                 invert = self.invertInput.GetSelection() == 0
  71
  72                 obj = convertImage(self.filename, height, width, blur, invert)
  73                 self.parent._scene.add(obj)
  74                 self.parent._scene.centerAll()
  75                 self.parent.sceneUpdated()
  76
  77         def OnWidthEnter(self, e):
  78                 try:
  79                         w = float(self.widthInput.GetValue())
  80                 except ValueError:
  81                         return
  82                 h = w / self.aspectRatio
  83                 self.depthInput.SetValue(str(h))
  84
  85         def OnDepthEnter(self, e):
  86                 try:
  87                         h = float(self.depthInput.GetValue())
  88                 except ValueError:
  89                         return
  90                 w = h * self.aspectRatio
  91                 self.widthInput.SetValue(str(w))
  92
  93 def convertImage(filename, height=20.0, width=100.0, blur=0, invert=False, baseHeight=1.0):
  94         image = wx.Image(filename)
  95         image.ConvertToGreyscale()
  96         if image.GetHeight() > 512:
  97                 image.Rescale(image.GetWidth() * 512 / image.GetHeight(), 512, wx.IMAGE_QUALITY_HIGH)
  98         if image.GetWidth() > 512:
  99                 image.Rescale(512, image.GetHeight() * 512 / image.GetWidth(), wx.IMAGE_QUALITY_HIGH)
 100         if blur > 0:
 101                 image = image.Blur(blur)
 102         z = numpy.fromstring(image.GetData(), numpy.uint8)
 103         z = numpy.array(z[::3], numpy.float32)  #Only get the R values (as we are grayscale), and convert to float values
 104         pMin, pMax = numpy.min(z), numpy.max(z)
 105         if pMax == pMin:
 106                 pMax += 1.0
 107         if invert:
 108                 z = 255 - z
 109         z = ((z - pMin) * height / (pMax - pMin)) + baseHeight
 110
 111         w, h = image.GetWidth(), image.GetHeight()
 112         scale = width / (image.GetWidth() - 1)
 113         n = w * h
 114         y, x = numpy.mgrid[0:h,0:w]
 115         x = numpy.array(x, numpy.float32, copy=False) * scale
 116         y = numpy.array(y, numpy.float32, copy=False) *-scale
 117         v0 = numpy.concatenate((x.reshape((n, 1)), y.reshape((n, 1)), z.reshape((n, 1))), 1)
 118         v0 = v0.reshape((h, w, 3))
 119         v1 = v0[0:-1,0:-1,:]
 120         v2 = v0[0:-1,1:,:]
 121         v3 = v0[1:,0:-1,:]
 122         v4 = v0[1:,1:,:]
 123
 124         obj = mesh.printableObject(filename)
 125         m = obj._addMesh()
 126         m._prepareFaceCount((w-1) * (h-1) * 2 + 2 + (w-1)*4 + (h-1)*4)
 127         m.vertexes = numpy.array(numpy.concatenate((v1,v3,v2,v2,v3,v4), 2).reshape(((w-1) * (h-1) * 6, 3)), numpy.float32, copy=False)
 128         m.vertexes = numpy.concatenate((m.vertexes, numpy.zeros(((2+(w-1)*4+(h-1)*4)*3, 3), numpy.float32)))
 129         m.vertexCount = (w-1) * (h-1) * 6
 130         x = (w-1)* scale
 131         y = (h-1)*-scale
 132         m._addFace(0,0,0, x,0,0, 0,y,0)
 133         m._addFace(x,y,0, 0,y,0, x,0,0)
 134         for n in xrange(0, w-1):
 135                 x = n* scale
 136                 i = w*h-w+n
 137                 m._addFace(x+scale,0,0, x,0,0, x,0,z[n])
 138                 m._addFace(x+scale,0,0, x,0,z[n], x+scale,0,z[n+1])
 139                 m._addFace(x+scale,y,0, x,y,z[i], x,y,0)
 140                 m._addFace(x+scale,y,0, x+scale,y,z[i+1], x,y,z[i])
 141
 142         x = (w-1)*scale
 143         for n in xrange(0, h-1):
 144                 y = n*-scale
 145                 i = n*w+w-1
 146                 m._addFace(0,y-scale,0, 0,y,z[n*w], 0,y,0)
 147                 m._addFace(0,y-scale,0, 0,y-scale,z[n*w+w], 0,y,z[n*w])
 148                 m._addFace(x,y-scale,0, x,y,0, x,y,z[i])
 149                 m._addFace(x,y-scale,0, x,y,z[i], x,y-scale,z[i+w])
 150         obj._postProcessAfterLoad()
 151         return obj