wxPython/demo/wxGLCanvas.py

   1 # 11/18/2003 - Jeff Grimmett (grimmtooth@softhome.net)
   2 #
   3 # o Updated for wx namespace
   4 # o Note: unable to install PyOpenGL on my system as I am running Python 2.3
   5 #   and PyOpenGL does not support anything above Python 2.2. Did what I could,
   6 #   but odds are good there are problems.
   7 #
   8
   9 import  wx
  10
  11 try:
  12     import  wx.glcanvas as  glcanvas
  13     haveGLCanvas = True
  14 except ImportError:
  15     haveGLCanvas = False
  16
  17 try:
  18     # The Python OpenGL package can be found at
  19     # http://PyOpenGL.sourceforge.net/
  20
  21     import  OpenGL.GL   as  gl
  22     import  OpenGL.GLUT as  glut
  23     haveOpenGL = True
  24 except ImportError:
  25     haveOpenGL = False
  26
  27 #----------------------------------------------------------------------
  28
  29 if not haveGLCanvas:
  30     def runTest(frame, nb, log):
  31         dlg = wx.MessageDialog(
  32             frame, 'The wxGLCanvas has not been included with this build of wxPython!',
  33             'Sorry', wx.OK | wx.ICON_INFORMATION
  34             )
  35
  36         dlg.ShowModal()
  37         dlg.Destroy()
  38
  39 elif not haveOpenGL:
  40     def runTest(frame, nb, log):
  41         dlg = wxMessageDialog(
  42             frame, 'The OpenGL package was not found.  You can get it at\n'
  43             'http://PyOpenGL.sourceforge.net/', 'Sorry', wx.OK | wx.ICON_INFORMATION
  44             )
  45
  46         dlg.ShowModal()
  47         dlg.Destroy()
  48
  49
  50 else:
  51     buttonDefs = {
  52         wx.NewId() : ('CubeCanvas',      'Cube'),
  53         wx.NewId() : ('ConeCanvas',      'Cone'),
  54         }
  55
  56     class ButtonPanel(wx.Panel):
  57         def __init__(self, parent, log):
  58             wx.Panel.__init__(self, parent, -1)
  59             self.log = log
  60
  61             box = wx.BoxSizer(wx.VERTICAL)
  62             box.Add((20, 30))
  63             keys = buttonDefs.keys()
  64             keys.sort()
  65
  66             for k in keys:
  67                 text = buttonDefs[k][1]
  68                 btn = wx.Button(self, k, text)
  69                 box.Add(btn, 0, wx.ALIGN_CENTER|wx.ALL, 15)
  70                 self.Bind(wx.EVT_BUTTON, self.OnButton, id=k)
  71
  72             #** Enable this to show putting a wxGLCanvas on the wxPanel
  73             if 0:
  74                 c = CubeCanvas(self)
  75                 c.SetSize((200, 200))
  76                 box.Add(c, 0, wx.ALIGN_CENTER|wx.ALL, 15)
  77
  78             self.SetAutoLayout(True)
  79             self.SetSizer(box)
  80
  81
  82         def OnButton(self, evt):
  83             canvasClassName = buttonDefs[evt.GetId()][0]
  84             canvasClass = eval(canvasClassName)
  85             frame = wx.Frame(None, -1, canvasClassName, size=(400,400))
  86             canvas = canvasClass(frame)
  87             frame.Show(True)
  88
  89
  90
  91     def runTest(frame, nb, log):
  92         win = ButtonPanel(nb, log)
  93         return win
  94
  95
  96
  97
  98     class MyCanvasBase(glcanvas.GLCanvas):
  99         def __init__(self, parent):
 100             glcanvas.GLCanvas.__init__(self, parent, -1)
 101             self.init = False
 102             # initial mouse position
 103             self.lastx = self.x = 30
 104             self.lasty = self.y = 30
 105             self.Bind(wx.EVT_ERASE_BACKGROUND, self.OnEraseBackground)
 106             self.Bind(wx.EVT_SIZE, self.OnSize)
 107             self.Bind(wx.EVT_PAINT, self.OnPaint)
 108             self.Bind(wx.EVT_LEFT_DOWN, self.OnMouseDown)  # needs fixing...
 109             self.Bind(wx.EVT_LEFT_UP, self.OnMouseUp)
 110             self.Bind(wx.EVT_MOTION, self.OnMouseMotion)
 111
 112         def OnEraseBackground(self, event):
 113             pass # Do nothing, to avoid flashing on MSW.
 114
 115         def OnSize(self, event):
 116             size = self.GetClientSize()
 117
 118             if self.GetContext():
 119                 self.SetCurrent()
 120                 glcanvas.glViewport(0, 0, size.width, size.height)
 121
 122         def OnPaint(self, event):
 123             dc = wx.PaintDC(self)
 124             self.SetCurrent()
 125
 126             if not self.init:
 127                 self.InitGL()
 128                 self.init = True
 129
 130             self.OnDraw()
 131
 132         def OnMouseDown(self, evt):
 133             self.CaptureMouse()
 134
 135         def OnMouseUp(self, evt):
 136             self.ReleaseMouse()
 137
 138         def OnMouseMotion(self, evt):
 139             if evt.Dragging() and evt.LeftIsDown():
 140                 self.x, self.y = self.lastx, self.lasty
 141                 self.x, self.y = evt.GetPosition()
 142                 self.Refresh(False)
 143
 144
 145     class CubeCanvas(MyCanvasBase):
 146         def InitGL(self):
 147             # set viewing projection
 148             glcanvas.glMatrixMode(glcanvas.GL_PROJECTION);
 149             glcanvas.glFrustum(-0.5, 0.5, -0.5, 0.5, 1.0, 3.0);
 150
 151             # position viewer
 152             glcanvas.glMatrixMode(glcanvas.GL_MODELVIEW);
 153             glcanvas.glTranslatef(0.0, 0.0, -2.0);
 154
 155             # position object
 156             glcanvas.glRotatef(self.y, 1.0, 0.0, 0.0);
 157             glcanvas.glRotatef(self.x, 0.0, 1.0, 0.0);
 158
 159             glcanvas.glEnable(glcanvas.GL_DEPTH_TEST);
 160             glcanvas.glEnable(glcanvas.GL_LIGHTING);
 161             glcanvas.glEnable(glcanvas.GL_LIGHT0);
 162
 163
 164         def OnDraw(self):
 165             # clear color and depth buffers
 166             glcanvas.glClear(glcanvas.GL_COLOR_BUFFER_BIT | glcanvas.GL_DEPTH_BUFFER_BIT)
 167
 168             # draw six faces of a cube
 169             glcanvas.glBegin(glcanvas.GL_QUADS)
 170             glcanvas.glNormal3f( 0.0, 0.0, 1.0)
 171             glcanvas.glVertex3f( 0.5, 0.5, 0.5)
 172             glcanvas.glVertex3f(-0.5, 0.5, 0.5)
 173             glcanvas.glVertex3f(-0.5,-0.5, 0.5)
 174             glcanvas.glVertex3f( 0.5,-0.5, 0.5)
 175
 176             glcanvas.glNormal3f( 0.0, 0.0,-1.0)
 177             glcanvas.glVertex3f(-0.5,-0.5,-0.5)
 178             glcanvas.glVertex3f(-0.5, 0.5,-0.5)
 179             glcanvas.glVertex3f( 0.5, 0.5,-0.5)
 180             glcanvas.glVertex3f( 0.5,-0.5,-0.5)
 181
 182             glcanvas.glNormal3f( 0.0, 1.0, 0.0)
 183             glcanvas.glVertex3f( 0.5, 0.5, 0.5)
 184             glcanvas.glVertex3f( 0.5, 0.5,-0.5)
 185             glcanvas.glVertex3f(-0.5, 0.5,-0.5)
 186             glcanvas.glVertex3f(-0.5, 0.5, 0.5)
 187
 188             glcanvas.glNormal3f( 0.0,-1.0, 0.0)
 189             glcanvas.glVertex3f(-0.5,-0.5,-0.5)
 190             glcanvas.glVertex3f( 0.5,-0.5,-0.5)
 191             glcanvas.glVertex3f( 0.5,-0.5, 0.5)
 192             glcanvas.glVertex3f(-0.5,-0.5, 0.5)
 193
 194             glcanvas.glNormal3f( 1.0, 0.0, 0.0)
 195             glcanvas.glVertex3f( 0.5, 0.5, 0.5)
 196             glcanvas.glVertex3f( 0.5,-0.5, 0.5)
 197             glcanvas.glVertex3f( 0.5,-0.5,-0.5)
 198             glcanvas.glVertex3f( 0.5, 0.5,-0.5)
 199
 200             glcanvas.glNormal3f(-1.0, 0.0, 0.0)
 201             glcanvas.glVertex3f(-0.5,-0.5,-0.5)
 202             glcanvas.glVertex3f(-0.5,-0.5, 0.5)
 203             glcanvas.glVertex3f(-0.5, 0.5, 0.5)
 204             glcanvas.glVertex3f(-0.5, 0.5,-0.5)
 205             glcanvas.glEnd()
 206
 207             glcanvas.glRotatef((self.lasty - self.y)/100., 1.0, 0.0, 0.0);
 208             glcanvas.glRotatef((self.lastx - self.x)/100., 0.0, 1.0, 0.0);
 209
 210             self.SwapBuffers()
 211
 212
 213     class ConeCanvas(MyCanvasBase):
 214         def InitGL( self ):
 215             glcanvas.glMatrixMode(glcanvas.GL_PROJECTION);
 216             # camera frustrum setup
 217             glcanvas.glFrustum(-0.5, 0.5, -0.5, 0.5, 1.0, 3.0);
 218             glcanvas.glMaterial(glcanvas.GL_FRONT, glcanvas.GL_AMBIENT, [0.2, 0.2, 0.2, 1.0])
 219             glcanvas.glMaterial(glcanvas.GL_FRONT, glcanvas.GL_DIFFUSE, [0.8, 0.8, 0.8, 1.0])
 220             glcanvas.glMaterial(glcanvas.GL_FRONT, glcanvas.GL_SPECULAR, [1.0, 0.0, 1.0, 1.0])
 221             glcanvas.glMaterial(glcanvas.GL_FRONT, glcanvas.GL_SHININESS, 50.0)
 222             glcanvas.glLight(glcanvas.GL_LIGHT0, glcanvas.GL_AMBIENT, [0.0, 1.0, 0.0, 1.0])
 223             glcanvas.glLight(glcanvas.GL_LIGHT0, glcanvas.GL_DIFFUSE, [1.0, 1.0, 1.0, 1.0])
 224             glcanvas.glLight(glcanvas.GL_LIGHT0, glcanvas.GL_SPECULAR, [1.0, 1.0, 1.0, 1.0])
 225             glcanvas.glLight(glcanvas.GL_LIGHT0, glcanvas.GL_POSITION, [1.0, 1.0, 1.0, 0.0]);
 226             glcanvas.glLightModel(glcanvas.GL_LIGHT_MODEL_AMBIENT, [0.2, 0.2, 0.2, 1.0])
 227             glcanvas.glEnable(glcanvas.GL_LIGHTING)
 228             glcanvas.glEnable(glcanvas.GL_LIGHT0)
 229             glcanvas.glDepthFunc(glcanvas.GL_LESS)
 230             glcanvas.glEnable(glcanvas.GL_DEPTH_TEST)
 231             glcanvas.glClear(glcanvas.GL_COLOR_BUFFER_BIT | glcanvas.GL_DEPTH_BUFFER_BIT)
 232             # position viewer
 233             glcanvas.glMatrixMode(glcanvas.GL_MODELVIEW);
 234
 235
 236         def OnDraw(self):
 237             # clear color and depth buffers
 238             glcanvas.glClear(glcanvas.GL_COLOR_BUFFER_BIT | glcanvas.GL_DEPTH_BUFFER_BIT);
 239             # use a fresh transformation matrix
 240             glcanvas.glPushMatrix()
 241             # position object
 242             glcanvas.glTranslate(0.0, 0.0, -2.0);
 243             glcanvas.glRotate(30.0, 1.0, 0.0, 0.0);
 244             glcanvas.glRotate(30.0, 0.0, 1.0, 0.0);
 245
 246             glcanvas.glTranslate(0, -1, 0)
 247             glcanvas.glRotate(250, 1, 0, 0)
 248             glcanvas.glutSolidCone(0.5, 1, 30, 5)
 249             glcanvas.glPopMatrix()
 250             glcanvas.glRotatef((self.lasty - self.y)/100., 0.0, 0.0, 1.0);
 251             glcanvas.glRotatef(0.0, (self.lastx - self.x)/100., 1.0, 0.0);
 252             # push into visible buffer
 253             self.SwapBuffers()
 254
 255
 256
 257
 258 #----------------------------------------------------------------------
 259
 260
 261
 262 overview = """\
 263 """
 264
 265
 266 #----------------------------------------------------------------------
 267
 268 def _test():
 269     class MyApp(wxApp):
 270         def OnInit(self):
 271             frame = wx.Frame(None, -1, "GL Demos", wx.DefaultPosition, (600,300))
 272             #win = ConeCanvas(frame)
 273             MySplitter(frame)
 274             frame.Show(True)
 275             self.SetTopWindow(frame)
 276             return True
 277
 278     app = MyApp(0)
 279     app.MainLoop()
 280
 281 if __name__ == '__main__':
 282     _test()
 283