wxPython/demo/wxGLCanvas.py

   1
   2 from wxPython.wx       import *
   3 try:
   4     from wxPython.glcanvas import *
   5     haveGLCanvas = true
   6 except ImportError:
   7     haveGLCanvas = false
   8
   9 try:
  10     # The Python OpenGL package can be found at
  11     # http://PyOpenGL.sourceforge.net/
  12     from OpenGL.GL import *
  13     from OpenGL.GLUT import *
  14     haveOpenGL = true
  15 except ImportError:
  16     haveOpenGL = false
  17
  18 #----------------------------------------------------------------------
  19
  20 if not haveGLCanvas:
  21     def runTest(frame, nb, log):
  22         dlg = wxMessageDialog(frame, 'The wxGLCanvas has not been included with this build of wxPython!',
  23                           'Sorry', wxOK | wxICON_INFORMATION)
  24         dlg.ShowModal()
  25         dlg.Destroy()
  26
  27 elif not haveOpenGL:
  28     def runTest(frame, nb, log):
  29         dlg = wxMessageDialog(frame,
  30                               'The OpenGL package was not found.  You can get it at\n'
  31                               'http://PyOpenGL.sourceforge.net/',
  32                           'Sorry', wxOK | wxICON_INFORMATION)
  33         dlg.ShowModal()
  34         dlg.Destroy()
  35
  36
  37 else:
  38     def runTest(frame, nb, log):
  39         win = wxFrame(frame, -1, "GL Demos", wxDefaultPosition, wxSize(300,300))
  40         CubeCanvas(win)
  41         #MySplitter(win)
  42         frame.otherWin = win
  43         win.Show(true)
  44         return None
  45
  46
  47     class MySplitter(wxSplitterWindow):
  48         def __init__(self, parent):
  49             wxSplitterWindow.__init__(self, parent, -1)
  50             cube = CubeCanvas(self)
  51             cone = ConeCanvas(self)
  52
  53             self.SplitVertically(cube, cone)
  54             self.SetSashPosition(300)
  55
  56
  57
  58     class CubeCanvas(wxGLCanvas):
  59         def __init__(self, parent):
  60             wxGLCanvas.__init__(self, parent, -1) #,
  61                                 #attribList=[GL_RED_BITS, 4, GL_DOUBLEBUFFER] )
  62             EVT_ERASE_BACKGROUND(self, self.OnEraseBackground)
  63             EVT_SIZE(self, self.OnSize)
  64             EVT_PAINT(self, self.OnPaint)
  65             self.init = false
  66
  67         def OnEraseBackground(self, event):
  68             pass # Do nothing, to avoid flashing.
  69
  70         def OnSize(self, event):
  71             size = self.GetClientSize()
  72             if self.GetContext():
  73                 self.SetCurrent()
  74                 glViewport(0, 0, size.width, size.height)
  75
  76
  77         def OnPaint(self, event):
  78             dc = wxPaintDC(self)
  79
  80             self.SetCurrent()
  81
  82             if not self.init:
  83                 self.InitGL()
  84                 self.init = true
  85
  86             # clear color and depth buffers
  87             glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  88
  89             # draw six faces of a cube
  90             glBegin(GL_QUADS)
  91             glNormal3f( 0.0, 0.0, 1.0)
  92             glVertex3f( 0.5, 0.5, 0.5)
  93             glVertex3f(-0.5, 0.5, 0.5)
  94             glVertex3f(-0.5,-0.5, 0.5)
  95             glVertex3f( 0.5,-0.5, 0.5)
  96
  97             glNormal3f( 0.0, 0.0,-1.0)
  98             glVertex3f(-0.5,-0.5,-0.5)
  99             glVertex3f(-0.5, 0.5,-0.5)
 100             glVertex3f( 0.5, 0.5,-0.5)
 101             glVertex3f( 0.5,-0.5,-0.5)
 102
 103             glNormal3f( 0.0, 1.0, 0.0)
 104             glVertex3f( 0.5, 0.5, 0.5)
 105             glVertex3f( 0.5, 0.5,-0.5)
 106             glVertex3f(-0.5, 0.5,-0.5)
 107             glVertex3f(-0.5, 0.5, 0.5)
 108
 109             glNormal3f( 0.0,-1.0, 0.0)
 110             glVertex3f(-0.5,-0.5,-0.5)
 111             glVertex3f( 0.5,-0.5,-0.5)
 112             glVertex3f( 0.5,-0.5, 0.5)
 113             glVertex3f(-0.5,-0.5, 0.5)
 114
 115             glNormal3f( 1.0, 0.0, 0.0)
 116             glVertex3f( 0.5, 0.5, 0.5)
 117             glVertex3f( 0.5,-0.5, 0.5)
 118             glVertex3f( 0.5,-0.5,-0.5)
 119             glVertex3f( 0.5, 0.5,-0.5)
 120
 121             glNormal3f(-1.0, 0.0, 0.0)
 122             glVertex3f(-0.5,-0.5,-0.5)
 123             glVertex3f(-0.5,-0.5, 0.5)
 124             glVertex3f(-0.5, 0.5, 0.5)
 125             glVertex3f(-0.5, 0.5,-0.5)
 126             glEnd()
 127
 128             self.SwapBuffers()
 129
 130
 131         def InitGL(self):
 132             # set viewing projection
 133             glMatrixMode(GL_PROJECTION);
 134             glFrustum(-0.5, 0.5, -0.5, 0.5, 1.0, 3.0);
 135
 136             # position viewer
 137             glMatrixMode(GL_MODELVIEW);
 138             glTranslatef(0.0, 0.0, -2.0);
 139
 140             # position object
 141             glRotatef(30.0, 1.0, 0.0, 0.0);
 142             glRotatef(30.0, 0.0, 1.0, 0.0);
 143
 144             glEnable(GL_DEPTH_TEST);
 145             glEnable(GL_LIGHTING);
 146             glEnable(GL_LIGHT0);
 147
 148
 149
 150     class ConeCanvas(wxGLCanvas):
 151         def __init__(self, parent):
 152             wxGLCanvas.__init__(self, parent, -1)
 153             EVT_ERASE_BACKGROUND(self, self.OnEraseBackground)
 154             EVT_SIZE(self, self.OnSize)
 155             EVT_PAINT(self, self.OnPaint)
 156             self.init = false
 157
 158         def OnEraseBackground(self, event):
 159             pass # Do nothing, to avoid flashing.
 160
 161         def OnSize(self, event):
 162             size = self.GetClientSize()
 163             if self.GetContext():
 164                 self.SetCurrent()
 165                 glViewport(0, 0, size.width, size.height)
 166
 167         def GLInit( self ):
 168             glMatrixMode(GL_PROJECTION);
 169             # camera frustrum setup
 170             glFrustum(-0.5, 0.5, -0.5, 0.5, 1.0, 3.0);
 171             glMaterial(GL_FRONT, GL_AMBIENT, [0.2, 0.2, 0.2, 1.0])
 172             glMaterial(GL_FRONT, GL_DIFFUSE, [0.8, 0.8, 0.8, 1.0])
 173             glMaterial(GL_FRONT, GL_SPECULAR, [1.0, 0.0, 1.0, 1.0])
 174             glMaterial(GL_FRONT, GL_SHININESS, 50.0)
 175             glLight(GL_LIGHT0, GL_AMBIENT, [0.0, 1.0, 0.0, 1.0])
 176             glLight(GL_LIGHT0, GL_DIFFUSE, [1.0, 1.0, 1.0, 1.0])
 177             glLight(GL_LIGHT0, GL_SPECULAR, [1.0, 1.0, 1.0, 1.0])
 178             glLight(GL_LIGHT0, GL_POSITION, [1.0, 1.0, 1.0, 0.0]);
 179             glLightModel(GL_LIGHT_MODEL_AMBIENT, [0.2, 0.2, 0.2, 1.0])
 180             glEnable(GL_LIGHTING)
 181             glEnable(GL_LIGHT0)
 182             glDepthFunc(GL_LESS)
 183             glEnable(GL_DEPTH_TEST)
 184             glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
 185
 186
 187         def OnPaint( self, event ):
 188             dc = wxPaintDC(self)
 189             if not self.init:
 190                 self.GLInit()
 191                 self.init = true
 192
 193             ### Tell system to use _this_ glcanvas for all commands
 194             self.SetCurrent()
 195             # clear color and depth buffers
 196             glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 197             # position viewer
 198             glMatrixMode(GL_MODELVIEW);
 199             # use a fresh transformation matrix
 200             glPushMatrix()
 201             # position object
 202             glTranslate(0.0, 0.0, -2.0);
 203             glRotate(30.0, 1.0, 0.0, 0.0);
 204             glRotate(30.0, 0.0, 1.0, 0.0);
 205
 206             ### From cone.py
 207             glTranslate(0, -1, 0)
 208             glRotate(250, 1, 0, 0)
 209             glutSolidCone(1, 2, 50, 10)
 210             glPopMatrix()
 211             # push into visible buffer
 212             self.SwapBuffers()
 213
 214
 215 #----------------------------------------------------------------------
 216
 217
 218
 219
 220
 221
 222
 223
 224 overview = """\
 225 """
 226
 227
 228
 229
 230
 231 #----------------------------------------------------------------------
 232
 233 def _test():
 234     class MyApp(wxApp):
 235         def OnInit(self):
 236             frame = wxFrame(None, -1, "GL Demos", wxDefaultPosition, wxSize(600,300))
 237             #win = ConeCanvas(frame)
 238             MySplitter(frame)
 239             frame.Show(TRUE)
 240             self.SetTopWindow(frame)
 241             return TRUE
 242
 243     app = MyApp(0)
 244     app.MainLoop()
 245
 246 if __name__ == '__main__':
 247     _test()