Initial data commit

Task/Color-wheel/Sidef/color-wheel.sidef

@@ -0,0 +1,17 @@
+require('Imager')
+
+var (width, height) = (300, 300)
+var center = Complex(width/2 , height/2)
+
+var img = %O<Imager>.new(xsize => width, ysize => height)
+
+for y=(^height), x=(^width) {
+    var vector    = (center - x - y.i)
+    var magnitude = (vector.abs * 2 / width)
+    var direction = ((Num.pi + atan2(vector.real, vector.imag)) / Num.tau)
+    img.setpixel(x => x, y => y,
+        color => Hash(hsv => [360*direction, magnitude, magnitude < 1 ? 1 : 0])
+    )
+}
+
+img.write(file => 'color_wheel.png')