npspec.h

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#ifndef NPSPEC_H
#define NPSPEC_H

/* Pull in the constants */
#include "npspec/constants.h"

/* Protect as C if C++ so that library can be called from C or Fortran */
#ifdef __cplusplus
extern "C" {
#else

/* If using library in C, use stdbool.h if available */
#if __STDC_VERSION__ >= 199901L
#include <stdbool.h>
#else
typedef int bool;
const bool false = 0;
const bool true  = 1;
#endif

#endif

int material_index(const char *material);

#ifdef __cplusplus
NPSpec::ErrorCode npspec (const int nlayers,
#else
enum ErrorCode npspec (const int nlayers,
#endif
                  const double rad[2],
                  const double rel_rad[][2],
                  const int indx[],
                  const double mrefrac,
                  const bool size_correct,
                  const int increment,
                  const double path_length,
                  const double concentration,
#ifdef __cplusplus
                  const NPSpec::SpectraType spectra_type,
#else
                  const enum SpectraType spectra_type,
#endif
                  double extinct[],
                  double scat[],
                  double absorb[]
                );

void RGB(const double spec_in[], 
         const int inc, 
         const bool trans, 
         double *r, 
         double *g,
         double *b);

void RGB_to_HSV(const double r,
                const double g,
                const double b,
                double *h,
                double *s,
                double *v);

#ifdef __cplusplus
} // extern 
#endif

#endif /* NPSPEC_H */