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

colorchord2/color.c

@@ -0,0 +1,105 @@
+#include "color.h"
+#include <math.h>
+
+uint32_t CCtoHEX( float note, float sat, float value )
+{
+	float hue = 0.0;
+	note = fmodf( note, 1.0 );
+	note *= 12;
+	if( note < 4 )
+	{
+		//Needs to be YELLOW->RED
+		hue = (4 - note) / 24.0;
+	}
+	else if( note < 8 )
+	{
+		//            [4]  [8]
+		//Needs to be RED->BLUE
+		hue = ( 4 - note ) / 12.0;
+	}
+	else
+	{
+		//             [8] [12]
+		//Needs to be BLUE->YELLOW
+		hue = ( 12 - note ) / 8.0 + 1./6.;
+	}
+	return HSVtoHEX( hue, sat, value );
+}
+
+
+//0/6: RED
+//1/6: YELLOW
+//2/6: GREEN
+//3/6: CYAN
+//4/6: BLUE
+//5/6: PURPLE
+//6/6: RED
+uint32_t HSVtoHEX( float hue, float sat, float value )
+{
+
+	float pr = 0;
+	float pg = 0;
+	float pb = 0;
+
+	short ora = 0;
+	short og = 0;
+	short ob = 0;
+
+	float ro = fmod( hue * 6, 6. );
+
+	float avg = 0;
+
+	ro = fmod( ro + 6 + 1, 6 ); //Hue was 60* off...
+
+	if( ro < 1 ) //yellow->red
+	{
+		pr = 1;
+		pg = 1. - ro;
+	} else if( ro < 2 )
+	{
+		pr = 1;
+		pb = ro - 1.;
+	} else if( ro < 3 )
+	{
+		pr = 3. - ro;
+		pb = 1;
+	} else if( ro < 4 )
+	{
+		pb = 1;
+		pg = ro - 3;
+	} else if( ro < 5 )
+	{
+		pb = 5 - ro;
+		pg = 1;
+	} else
+	{
+		pg = 1;
+		pr = ro - 5;
+	}
+
+	//Actually, above math is backwards, oops!
+	pr *= value;
+	pg *= value;
+	pb *= value;
+
+	avg += pr;
+	avg += pg;
+	avg += pb;
+
+	pr = pr * sat + avg * (1.-sat);
+	pg = pg * sat + avg * (1.-sat);
+	pb = pb * sat + avg * (1.-sat);
+
+	ora = pr * 255;
+	og = pb * 255;
+	ob = pg * 255;
+
+	if( ora < 0 ) ora = 0;
+	if( ora > 255 ) ora = 255;
+	if( og < 0 ) og = 0;
+	if( og > 255 ) og = 255;
+	if( ob < 0 ) ob = 0;
+	if( ob > 255 ) ob = 255;
+
+	return (ob<<16) | (og<<8) | ora;
+}