Move colorchord2 into its own folder, since colorchord embedded is its own thing.

colorchord2/util.c

@@ -0,0 +1,58 @@
+#include "util.h"
+#include <math.h>
+#include <stdlib.h>
+
+//Take the absolute distance between two points on a torus.
+float fabsloop( float a, float b, float modl )
+{
+	float fa = fabsf( a - b );
+
+	fa = fmodf( fa, modl );
+
+	if( fa > modl/2.0 )
+	{
+		fa = modl - fa;
+	}
+
+	return fa;
+}
+
+//Get the weighted - average of two points on a torus.
+float avgloop( float pta, float ampa, float ptb, float ampb, float modl )
+{
+	float amptot = ampa + ampb;
+
+	//Determine if it should go linearly, or around the edge.
+	if( fabsf( pta - ptb ) > modl/2.0 )
+	{
+		//Loop around the outside.
+		if( pta < ptb )
+		{
+			pta += modl;
+		}
+		else
+		{
+			ptb += modl;
+		}
+	}
+
+	float modmid = (pta * ampa + ptb * ampb)/amptot;
+
+	return fmodf( modmid, modl );
+}
+
+int atoi_del( char * data )
+{
+	int ret = atoi( data );
+	free( data );
+	return ret;
+}
+
+float atof_del( char * data )
+{
+	float ret = atof( data );
+	free( data );
+	return ret;
+}
+
+