1 files changed, 38 insertions, 0 deletions
diff --git a/NeoRuntime/builtin/rainbow/script.py b/NeoRuntime/builtin/rainbow/script.py
new file mode 100644
index 0000000..292ef97
--- /dev/null
+++ b/NeoRuntime/builtin/rainbow/script.py
@@ -0,0 +1,38 @@
+from luxcena_neo import NeoBehaviour, utils, FloatVariable, BooleanVariable
+from time import perf_counter
+
+def wheel(pos):
+    """Generate rainbow colors across 0-255 positions."""
+    if pos < 85:
+        return (pos * 3, 255 - pos * 3, 0)
+    elif pos < 170:
+        pos -= 85
+        return (255 - pos * 3, 0, pos * 3)
+    else:
+        pos -= 170
+        return (0, pos * 3, 255 - pos * 3)
+
+class Main(NeoBehaviour):
+    
+    def declare_variables(self):
+        self.declare(FloatVariable("speed", 0.95, min_val=0, max_val=1, step=0.01))
+        self.declare(BooleanVariable("Uniform", True))
+
+    def on_start(self):
+        """ Execute when mode is selected. """
+        self.j = 0
+        self.i = 0
+        self.last_inst = perf_counter()
+
+    def each_tick(self):
+        """Draw rainbow that fades across all pixels at once."""
+        if (perf_counter() - self.last_inst) > (1.01-self.var.Speed):
+            self.last_inst = perf_counter()
+            self.j += 1
+            if self.j >= 256: self.j = 0
+            for i in range(strip.num_pixels()):
+                if self.var["Uniform"]:
+                    strip.set_pixel_color(i, wheel(int((i * 256 // strip.num_pixels()) + self.j) & 255))
+                else:
+                    strip.set_pixel_color(i, wheel((i+self.j) & 255))
+            strip.show()