July 4 pattern test, buffering for less glitching

hello_gradient/src/bin/july4.rs

@@ -0,0 +1,45 @@
+#![no_std]
+#![no_main]
+
+use core::iter::repeat;
+use lights::{
+    gamma::GammaCorrector,
+    PixelIterator,
+    rgb::{
+        Rgb
+    }
+};
+use lights_hal::{boot, delay, entry};
+
+#[entry]
+fn main() -> ! {
+    let mut lights = GammaCorrector(boot());
+
+    let pattern =
+        repeat(&Rgb(255,0,0)).take(5)
+        .chain(
+            repeat(&Rgb(255,255,255)).take(5)
+        ).cycle().take(60)
+        .chain(
+            repeat(&Rgb(255,0,0)).take(5)
+        )
+        .chain(
+            [
+                Rgb(0,0,255),
+                Rgb(255,255,255),
+                Rgb(0,0,255),
+            ].iter().cycle().take(85)
+        );
+
+    let mut buffer = [Rgb(255,0,255); 150];
+    loop {
+        for (i, pixel) in pattern.clone().take(150).enumerate() {
+            buffer[i] = *pixel;
+        }
+
+        buffer.iter().render_to(&mut lights);
+
+        //pattern.next();
+        delay(1_000_000);
+    }
+}