Arguments: position matrix
The destructive version of position-transformposition-transform. The position argument is modified to be the result.
This function transforms the given position with the supplied matrix, which is a 2 by 2 array (or larger 2-dimensional array -- extra cells of the array are ignored). If the elements of matrix are floats, the returned (and modified) position will have rounded whole number components. The transform works as follows:
xnew = A(0,0)*xold + A(0,1)*yold ynew = A(1,0)*xold + A(1,1)*yold
Common Graphics and IDE documentation is described in About Common Graphics and IDE documentation in cgide.htm.
The documentation is described in introduction.htm and the index is in index.htm.
Copyright (c) 1998-2000, Franz Inc. Berkeley, CA., USA. All rights reserved.
Created 2000.10.5.