glsurface 0.1.1

Some helper class

glsurface

glsurface is a python class to show 2d/3d data with wxPython and PyOpenGL.

Installation

$ pip install glsurface

Usage

1. Create a class from TrackingSurface

   class Surface(TrackingSurface):
       def __init__(self, *args, **kwargs):
       TrackingSurface.__init__(self, *args, **kwargs)
       ...
   

2. Create an instance, and set data (optional)

   class SurfacePanel(wx.Panel):
   
       def __init__(self, parent):
           wx.Panel.__init__(self, parent, -1)
           ...
           self.x = np.linspace(0, 2 * np.pi, 30).reshape((1, 30))
           z = np.cos(self.x).T * np.sin(self.x)
           self.canvas = Surface(self, {'z': z})
           ...
   

3. Update the data
   1. Add new frame data to the current frame buffer

      self.canvas.NewFrameArrive(z, silent=False)
      

   2. Or reset the frame buffer with new data

      self.canvas.SetFrames(points, reset_buf_len=True, silent=False)
      

Check gltest.py for details.

Known issues

1. On Linux, it may show the following error.

   OpenGL.error.Error: Attempt to retrieve context when no valid context
   

   In this case, try different OpenGL platform, e.g.,

   $ export PYOPENGL_PLATFORM='egl'
   

   All supported platforms can be found here /path/to/python/site-packages/OpenGL/__init__.py

2. For EGL Surface, you may need to call CreateSurface, as mentioned here