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5.2 Projection functions

A set of member functions of VIMask provide access to the fields in the matrix:

int xsize() const;
int ysize() const;
int scale() const;
int offset() const;
const char *filename() const;

VDMask is the same, except that the scale() and offset() members return double. VMask allows all operations that are common to VIMask and VDMask.



John Cupitt 2003-07-21