A UGen that scans the pixels of an image using an x and y input signal.
It uses either a sinc-based band-limited resampling algorithm, or
bicubic interpolation, depending on the zeroCrossings parameter.
All window defining parameters (width, height)
are polled once per matrix. All scanning and filter parameters are polled one per
output pixel.
- Value parameters:
- height
the height (number of rows) of the input matrix
- in
the image to scan
- kaiserBeta
the FIR windowing function's parameter
- next
a trigger that causes the UGen to read in a new image from
in.- rollOff
the FIR anti-aliasing roll-off width. Between zero and one.
- width
the width (number of columns) of the input matrix
- wrap
if non-zero, wraps coordinates around the input images boundaries. TODO: currently
wrap = 0is broken if using sinc interpolation!- x
horizontal position of the dynamic scanning signal
- y
vertical position of the dynamic scanning signal
- zeroCrossings
the number of zero-crossings in the truncated and windowed sinc FIR. If zero (default), algorithm uses bicubic interpolation instead.
- See also:
- Companion:
- object