Re: [pygame] Simple Surfarray Alpha

[Lenard Lindstrom <len-l@xxxxxxxxx>]

I don't know. What version of NumPy do you have installed? I cannot 
reproduce this error message with version 1.2.1. Try adding these print 
statements:

surface.convert(32,SRCALPHA)
print surface.get_size(), surface.get_masks(), surface.get_shifts()
array = pygame.surfarray.pixels_alpha(surface)
print array.dtype, array.shape, array.strides

Lenard


Ian Mallett wrote:
> I only provided that much code because I thought it was something 
> simple.  Hmmm.  Here's my code:
>
> #surface is loaded earlier with pygame.image.load()
> surface.convert(32,SRCALPHA)
> array = pygame.surfarray.pixels_alpha(surface)
> array[:,:] = 255-array[:,:]
> del array
>
> It crashes with:
>
> Traceback (most recent call last):
>   File "[path]", line 152, in OnFlipAlpha
>     array[:,:] = 255-array[:,:]
> TypeError: Array can not be safely cast to required type