utils/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 #----------------------------------------------------------------------
  10
  11 if not haveGLCanvas:
  12     def runTest(frame, nb, log):
  13         dlg = wxMessageDialog(frame, 'The wxGLCanvas has not been included with this build of wxPython!',
  14                           'Sorry', wxOK | wxICON_INFORMATION)
  15         dlg.ShowModal()
  16         dlg.Destroy()
  17
  18 else:
  19
  20
  21     def runTest(frame, nb, log):
  22         win = TestGLCanvas(nb)
  23         return win
  24
  25
  26
  27     class TestGLCanvas(wxGLCanvas):
  28         def __init__(self, parent):
  29             wxGLCanvas.__init__(self, parent, -1)
  30             EVT_ERASE_BACKGROUND(self, self.OnEraseBackground)
  31             self.init = false
  32
  33         def OnEraseBackground(self, event):
  34             pass # Do nothing, to avoid flashing.
  35
  36
  37         def OnSize(self, event):
  38             size = self.GetClientSize()
  39             if self.GetContext() != 'NULL':
  40                 self.SetCurrent()
  41                 glViewport(0, 0, size.width, size.height)
  42
  43
  44         def OnPaint(self, event):
  45             dc = wxPaintDC(self)
  46
  47             ctx = self.GetContext()
  48             if ctx == "NULL": return
  49
  50             self.SetCurrent()
  51
  52
  53             if not self.init:
  54                 self.InitGL()
  55                 self.init = true
  56
  57             # clear color and depth buffers
  58             glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  59
  60             # draw six faces of a cube
  61             glBegin(GL_QUADS)
  62             glNormal3f( 0.0, 0.0, 1.0)
  63             glVertex3f( 0.5, 0.5, 0.5)
  64             glVertex3f(-0.5, 0.5, 0.5)
  65             glVertex3f(-0.5,-0.5, 0.5)
  66             glVertex3f( 0.5,-0.5, 0.5)
  67
  68             glNormal3f( 0.0, 0.0,-1.0)
  69             glVertex3f(-0.5,-0.5,-0.5)
  70             glVertex3f(-0.5, 0.5,-0.5)
  71             glVertex3f( 0.5, 0.5,-0.5)
  72             glVertex3f( 0.5,-0.5,-0.5)
  73
  74             glNormal3f( 0.0, 1.0, 0.0)
  75             glVertex3f( 0.5, 0.5, 0.5)
  76             glVertex3f( 0.5, 0.5,-0.5)
  77             glVertex3f(-0.5, 0.5,-0.5)
  78             glVertex3f(-0.5, 0.5, 0.5)
  79
  80             glNormal3f( 0.0,-1.0, 0.0)
  81             glVertex3f(-0.5,-0.5,-0.5)
  82             glVertex3f( 0.5,-0.5,-0.5)
  83             glVertex3f( 0.5,-0.5, 0.5)
  84             glVertex3f(-0.5,-0.5, 0.5)
  85
  86             glNormal3f( 1.0, 0.0, 0.0)
  87             glVertex3f( 0.5, 0.5, 0.5)
  88             glVertex3f( 0.5,-0.5, 0.5)
  89             glVertex3f( 0.5,-0.5,-0.5)
  90             glVertex3f( 0.5, 0.5,-0.5)
  91
  92             glNormal3f(-1.0, 0.0, 0.0)
  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             glVertex3f(-0.5, 0.5,-0.5)
  97             glEnd()
  98
  99             self.SwapBuffers()
 100
 101
 102         def InitGL(self):
 103             # set viewing projection
 104             glMatrixMode(GL_PROJECTION);
 105             glFrustum(-0.5, 0.5, -0.5, 0.5, 1.0, 3.0);
 106
 107             # position viewer
 108             glMatrixMode(GL_MODELVIEW);
 109             glTranslatef(0.0, 0.0, -2.0);
 110
 111             # position object
 112             glRotatef(30.0, 1.0, 0.0, 0.0);
 113             glRotatef(30.0, 0.0, 1.0, 0.0);
 114
 115             glEnable(GL_DEPTH_TEST);
 116             glEnable(GL_LIGHTING);
 117             glEnable(GL_LIGHT0);
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131 overview = """\
 132 """
 133
 134
 135
 136
 137
 138 #----------------------------------------------------------------------
 139
 140 def _test():
 141     class MyApp(wxApp):
 142         def OnInit(self):
 143             frame = wxFrame(NULL, -1, "HELP ME!!")
 144             win = TestGLCanvas(frame)
 145             frame.Show(TRUE)
 146             self.SetTopWindow(frame)
 147             return TRUE
 148
 149     app = MyApp(0)
 150     app.MainLoop()
 151
 152 if __name__ == '__main__':
 153     _test()