diff --git a/src/components/dots.js b/src/components/dots.js
index d68efc8..ded89a1 100644
--- a/src/components/dots.js
+++ b/src/components/dots.js
@@ -1,5 +1,6 @@
 // calculate tiles
 
+const SIN_PERIOD = 100 / Math.PI;
 
 const RADIUS_OPTS = [ 
 	"const",
@@ -16,6 +17,9 @@ const RADIUS_OPTS = [
 	"hyper-in",
 	"hyper-out",
 	"noise",
+	"diamonds",
+	"horizontal-bands",
+	"vertical-bands",
 ];
 
 const RADIUS_DESC = {
@@ -33,6 +37,9 @@ const RADIUS_DESC = {
 	"hyper-in": "forming a starlike pattern at the centre",
 	"hyper-out": "leaving a starlike pattern gap in the centre",
 	"noise": "of random sizes",
+	"diamonds": "in a grid tilted at 45 degrees",
+	"horizontal-bands": "in horizontal bands",
+	"vertical-bands": "in a vertical bands",
 }
 
 function distance(dx, dy) {
@@ -107,6 +114,12 @@ class DotMaker {
 	      		return maxr * (1 - Math.abs((d.x - this.cx) * (d.y - this.cy)) / this.wh);
 	      	case "noise":
 	      		return maxr * Math.random();
+	      	case "horizontal-bands":
+	      		return maxr * (1 + Math.cos(SIN_PERIOD *(d.y - this.cy)/ this.wh));
+	      	case "vertical-bands":
+	      		return maxr * (1 + Math.cos(SIN_PERIOD *(d.x - this.cx)/ this.wh));
+	      	case "grid":
+	      		return maxr * (0.5 + 0.5 * (Math.cos(SIN_PERIOD *(d.x - this.cx)/ this.wh) + Math.cos(SIN_PERIOD * (d.y - this.cy)/ this.wh)));
 	    	default:
 	      		return maxr;
 	  }