the great code shaking party

2022-06-26 12:22:12 +02:00
parent ecd0186b28
commit 75a06cf5b4
102 changed files with 65 additions and 0 deletions
@@ -0,0 +1,38 @@
+/*
+ *	Colors in the strange XYZ space. new 9 avr 2007, ave St Exupery
+ */
+
+#include  <stdio.h>
+#include  <math.h>
+
+#include  "tthimage.h"
+
+/*::------------------------------------------------------------------::*/
+int
+Image_pix_rgb2xyz_d(int r, int g, int b, double *px, double *py, double *pz)
+{
+double		dr, dg, db, dx, dy, dz;
+
+#if TRACE
+fprintf(stderr, "%s  (%3d %3d %3d)  ->  ", __func__, r, g, b);
+#endif
+
+dr = (double)r / 256.0;
+dg = (double)g / 256.0;
+db = (double)b / 256.0;
+dx = 2.7688 * dr  +  1.7517 * dg  +  1.1301 * db;
+dy = 1.0000 * dr  +  4.5907 * dg  +  0.0601 * db;
+dz = 0.0001 * dr  +  0.0565 * dg  +  5.5942 * db;
+
+#if TRACE
+fprintf(stderr, "(%f, %f, %f)\n", dx, dy, dz);
+#endif
+
+*px = dx, *py = dy, *pz = dz;
+
+return FULL_NUCKED;
+}
+/*::------------------------------------------------------------------::*/
+/*::------------------------------------------------------------------::*/
+/*::------------------------------------------------------------------::*/
+