FScape-Core/de.sciss.fscape.graph/AffineTransform2D

AffineTransform2D

final case

class AffineTransform2D(in: GE, widthIn: GE, heightIn: GE, widthOut: GE, heightOut: GE, m00: GE, m10: GE, m01: GE, m11: GE, m02: GE, m12: GE, wrap: GE, rollOff: GE, kaiserBeta: GE, zeroCrossings: GE) extends SingleOut

An affine transformation UGen for image rotation, scaling, translation, shearing. It uses either a sinc-based band-limited resampling algorithm, or bicubic interpolation, depending on the zeroCrossings parameter.

All window defining parameters (widthIn, heightIn, widthOut, heightOut) are polled once per matrix. All matrix and filter parameters are polled one per output pixel.

Value Params

heightIn: the height (number of rows) of the input matrix
heightOut: the height (number of rows) of the output matrix. the special value zero (default) means it is the same as heightIn.
in: the signal to resample
kaiserBeta: the FIR windowing function's parameter
m00: coefficient of the first column of the first row (scale-x)
m01: coefficient of the second column of the first row (shear-x)
m02: coefficient of the third column of the first row (translate-x)
m10: coefficient of the first column of the second row (shear-y)
m11: coefficient of the second column of the second row (scale-y)
m12: coefficient of the third column of the second row (translate-y)
rollOff: the FIR anti-aliasing roll-off width. Between zero and one.
widthIn: the width (number of columns) of the input matrix
widthOut: the width (number of columns) of the output matrix. the special value zero (default) means it is the same as widthIn.
wrap: if non-zero, wraps coordinates around the input images boundaries. TODO: currently wrap = 0 is broken if using sinc interpolation!
zeroCrossings: the number of zero-crossings in the truncated and windowed sinc FIR. If zero, algorithm uses bicubic interpolation instead.

See also