[jitter] arbitrary 1d matrices FAST from rotated 2d field

just curious, should the line readout be interpolating?
marius.

joshua goldberg wrote:
> hi all.
> 
> i've got a video mapping problem.  i have a series of 2d frames from a 
> client, at resolution 600x600, that i need to resample in a particularly 
> annoying way.
> 
> i need to pull 75 1-dim lines of 32 pixels each from the image every 
> frame.  the lines i am sampling are almost all rotated in funny ways.- 
> 17 degrees, 57 degrees, almost never 0 or 90.
> 
> is there a more efficient way than submatrix-->rota-->submatrix to get 
> these lines out of the image?  basically i need to do arbitrary 1d scans 
> of a 2d matrix.
> 
> been knocking my head at this for hours, and it's annoying.
> 
> ideas?
> 
> 
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