htsky

commit 59385134eaf6cdb5d442e1c4a4af43ea40a866d1
parent 7707bd2a06e48cd32b6001bda4890715bd1cc956
Author: Vincent Forest <vincent.forest@meso-star.com>
Date:   Tue,  2 Jun 2020 10:14:39 +0200

Add the htsky_get_raw_spectral_bounds function

Return the spectral boundaries of the raw sky data, in nanometers. The
returned range is not clamped against the user provided spectral range.

Diffstat:
M
src/htsky.c
 | 
23
+++++++++++++++++++++++
M
src/htsky.h
 | 
7
+++++++

2 files changed, 30 insertions(+), 0 deletions(-)
diff --git a/src/htsky.c b/src/htsky.c
@@ -973,6 +973,29 @@ htsky_get_spectral_band_bounds
   return RES_OK;
 }
 
+res_T
+htsky_get_raw_spectral_bounds(const struct htsky* sky, double wavelengths[2])
+{
+  size_t n;
+  double band_first_bounds[2];
+  double band_last_bounds[2];
+  size_t iband_first;
+  size_t iband_last;
+  ASSERT(sky && wavelengths);
+
+  n = htsky_get_spectral_bands_count(sky);
+
+  iband_first = htsky_get_spectral_band_id(sky, 0);
+  iband_last  = htsky_get_spectral_band_id(sky, n-1);
+
+  HTSKY(get_spectral_band_bounds(sky, iband_first, band_first_bounds));
+  HTSKY(get_spectral_band_bounds(sky, iband_last,  band_last_bounds));
+  wavelengths[0] = MMIN(band_first_bounds[0], band_last_bounds[0]);
+  wavelengths[1] = MMAX(band_first_bounds[1], band_last_bounds[1]);
+
+  return RES_OK;
+}
+
 int
 htsky_is_long_wave(const struct htsky* htsky)
 {
diff --git a/src/htsky.h b/src/htsky.h
@@ -206,6 +206,13 @@ htsky_get_spectral_band_bounds
    const size_t iband,
    double wavelengths[2]);
 
+/* Retrieve the boundaries raw sky data overlapped. This range is NOT clamped
+ * against the user defined spectral range */
+HTSKY_API res_T
+htsky_get_raw_spectral_bounds
+  (const struct htsky* sky,
+   double wavelengths[2]);
+
 HTSKY_API int
 htsky_is_long_wave
   (const struct htsky* sky);