set viewport to speed up mobile taps, hex and square both handle 'pointy top' versions

src/tessellate.js

@@ -6,7 +6,6 @@ import Point from './point.js';
 import Sketch from './sketch.js';
 
 import TileCircle from './tileCircle.js';
-import TileDiamond from './tileDiamond.js';
 import TileHex    from './tileHex.js';
 import TileSquare from './tileSquare.js';
 
@@ -28,7 +27,7 @@ export default class Tessellate {
 			click: (event) => {
 				let x = event.pageX;
 				let y = event.pageY;
-				let tiles = ['circle', 'diamond', 'hex', 'square'];
+				let tiles = ['circle', 'hex', 'square'];
 				let styles = ['filled', 'outline'];
 				let scale = random(10, 50);
 
@@ -45,7 +44,6 @@ export default class Tessellate {
 		});
 
 		this.circle  = new TileCircle({context: this.sketch.getContext()});
-		this.diamond = new TileDiamond({context: this.sketch.getContext()});
 		this.hex     = new TileHex({context: this.sketch.getContext()});
 		this.square  = new TileSquare({context: this.sketch.getContext()});
 	}