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/*
# This file is part of the Astrometry.net suite.
# Licensed under a 3-clause BSD style license - see LICENSE
*/

#ifndef RESAMPLE_H
#define RESAMPLE_H

typedef struct {
	int order;
	int weighted;
} lanczos_args_t;

/***
 All the lanczos_* functions take a "lanczos_args_t*". for their "void* token".

 They're declared this way for ease of generic use as callbacks
 (eg in coadd.c)
 */

double lanczos(double x, int order);

double nearest_resample_f(double px, double py, const float* img,
						  const float* weightimg, int W, int H,
						  double* out_wt, void* token);

double lanczos_resample_f(double px, double py,
						  const float* img, const float* weightimg,
						  int W, int H, double* out_wt, void* token);

double lanczos_resample_unw_sep_f(double px, double py,
								  const float* img,
								  int W, int H, void* token);

double nearest_resample_d(double px, double py, const double* img,
						  const double* weightimg, int W, int H,
						  double* out_wt, void* token);

double lanczos_resample_d(double px, double py,
						  const double* img, const double* weightimg,
						  int W, int H, double* out_wt, void* token);


#endif