.TH VIPS_INTERPOLATE 3 "28 March 2009"
.SH NAME
VipsInterpolate, 
vips_interpolate,
vips_interpolate_get_method,
vips_interpolate_get_window_size
\- 
base class for VIPS interpolators
.SH SYNOPSIS
#include <vips/vips.h>

typedef void (*VipsInterpolateMethod)( VipsInterpolate *, 
.br
  PEL *out, REGION *in, double x, double y );

typedef struct _VipsInterpolateClass {
.br
  VipsObjectClass parent_class;

  VipsInterpolateMethod interpolate;
.br
  int (*get_window_size)( VipsInterpolate * );
.br
  int window_size;
.br
} VipsInterpolateClass;

void vips_interpolate( VipsInterpolate *interpolate, 
.br
  PEL *out, REGION *in, double x, double y );
.br
VipsInterpolateMethod vips_interpolate_get_method( VipsInterpolate * );
.br
int vips_interpolate_get_window_size( VipsInterpolate *interpolate );

.SH DESCRIPTION
.B VipsInterpolate
is the base class for VIPS interpolators. It provides a simple framework that
subclasses use to implement the various interpolators that VIPS ships with.
You can add new interpolators by subclassing
.B VipsInterpolate.
You can use any interpolator in your code via the methods of 
.B VipsInterpolate.

.B vips_interpolate(3)


.SH SUPPORTED INTERPOLATORS

.SH RETURN VALUE
Unless otherwise noted, functions return 0 success and -1 on error.
.SH SEE ALSO
VipsFormat(3), VipsInterpolate(3),
vips_type_find(3).
.SH AUTHOR
John Cupitt