Diff: utility.cpp

Revision:

25:d48f46d753fd

Child:

26:8bc9984c4600

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/utility.cpp	Mon Feb 01 01:02:46 2016 +0000
@@ -0,0 +1,46 @@
+#include "utility.h"
+#include "macros.h"
+
+
+/** random seed for unique identification **/
+unsigned long seed = 151;
+
+unsigned int hash(unsigned int x)
+{
+    x = ((x >> 16) ^ x) * 0x45d9f3b;
+    x = ((x >> 16) ^ x) * 0x45d9f3b;
+    x = ((x >> 16) ^ x);
+    seed*=2;
+    seed+=17;
+    return x%100;
+}
+
+
+void identify(unsigned int m, Rgb& strip)
+{
+    DEBUG("IDENTIFYING as: ");
+    unsigned int hashable;
+    float write_me;
+
+    int r, g, b;
+
+    hashable = hash(m + seed);
+    write_me = hashable/100.0;
+    r = hashable >= 50;
+    strip.write(RED, r);
+
+    hashable = hash(m + seed);
+    write_me = hashable/100.0;
+    g = hashable >= 50;
+    strip.write(GREEN, g);
+
+    hashable = hash(m + seed);
+    write_me = hashable/100.0;
+    b = hashable >= 50;
+    strip.write(BLUE, b);
+
+//    char* STR;
+//    sprintf(STR, "r, g, b: %f\t\r\n", write_me);
+//    DEBUG(STR);
+    DEBUG("%d%d%d\r\n",r,g,b);
+}