arctic rain: make stretch on wheel3 parameter

src/patterns/arctic_rain.rs

@@ -34,7 +34,7 @@ impl ColorGrid for ArcticRain {
                 //                Turns( 0.65 + 0.3*(inputs.wheel%10) as f32*0.1 ),
                 Turns( (self.inputs.wheel.abs() % 256) as f32 / 256.0 ),
                 0.9,
-                1.0 - ((i + (2.0-p.y/4.0)) * 12.0) % 1.0,
+                1.0 - ((i + (2.0-p.y/(0.2*(1+self.inputs.wheel3.abs()) as f32))) * 12.0) % 1.0,
 //                (f32::sin(-p.y+i) * 12.0) % 1.0,
             )
         );