Ken McIvor wrote:
> The problem I foresee is that the Agg renderer's RGBA data has to 
> be converted to RGB before a wxImage can be created by convert_agg2image().

As if by magic, this from Robin Dunn today:
> You may want to take a look at my CVS commits for the last couple weeks.  
> I've now got some raw bitmap access code in place.  Both 2.6 and 2.7 will 
> have wx.BitmapFromBuffer and wx.BitmapFromBufferRGBA factory functions which 
> can copy from a buffer object directly into the bitmap's pixel buffer, and 
> 2.7 will also have wx.NativePixelData and wx.AlphaPixelData which allow 
> direct access to the pixel buffer from Python.  (The latter needed a bug fix 
> that I'm not sure (yet) can be backported to 2.6...)  For example, I can now 
> do this (in a PyShell):
> 
>  >>> import wx
>  >>> import numarray
>  >>> f = wx.Frame(None)
>  >>> p = wx.Panel(f)
>  >>> dc = wx.ClientDC(p)
>  >>> f.Show()
>  >>> dim=100
>  >>> R=0; G=1; B=2; A=3
>  >>> arr = numarray.array(shape=(dim, dim, 4), typecode='u1')
>  >>> for row in xrange(dim):
>  ...     for col in xrange(dim):
>  ...        arr[row,col,R] = 0
>  ...        arr[row,col,G] = 0
>  ...        arr[row,col,B] = 255
>  ...        arr[row,col,A] = int(col * 255.0 / dim)
>  ...
>  >>> bmp = wx.BitmapFromBufferRGBA(dim, dim, arr)
>  >>> dc.DrawBitmap(bmp, 20, 20, True)

This is looking pretty promising.

-Chris


-- 
Christopher Barker, Ph.D.
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