Add California tartan

tartans/index.mdwn

@@ -4,13 +4,14 @@ Header: <script src="presets.js"></script>
 
 <canvas id="loom" width="800" height="600" style="width: 100%;">
 	Sorry, you need HTML5 and JavaScript for this.
+	<img src="nmloe.png">
 </canvas>
 
 <div>
 <select id="preset"><option disabled>Presets:</option></select>
 <input id="sett" size="30">
 <span style="white-space: nowrap;">
-Zoom: <select id="thick"><option>1</option><option selected>2</option></select>
+Zoom: <select id="thick"><option>0.8</option><option>1</option><option selected>2</option></select>
 </span>
 </div>
 

tartans/presets.js

@@ -19,6 +19,10 @@ var tartans = {
 		"sett": "Y8 BK2 Y8 BK2 B6 BK2 G8 B4 G8 BK2 B6 BK2 LR10 W2 LR10 BK2 B6 BK2 .",
 		"description": "I typed in this one as an example of an asymmetric sett."
 	},
+	"California": {
+		"sett": "Y8 K2 G20 R4 G20 R8 G20 K32 B56 K2 LB8 K2 B56 K32 G20 R4 G20 K2 Y8",
+		"description": "Contributed by the illustrious Sam Phillips"
+	},
 	"Colorado": {
 		"sett": "Y4 R6 (669)34 K40 G4 W6 LV6 W6 G22",
 		"description": "Wikipedia lists the sett as [Y/6] R4 MB26 K32 G4 W4 Lv4 W4 [G/44]. I'm not familiar with the [Color/Count] notation, the count appears to be doubled, possibly to indicate the total count of that thread in the mirror section.\n\nColorado house joint resolution 97-1016 makes this official but doesnt provide a thread count.  It speaks of \"cerulean blue\" which I approximate with the unique (669) color."

tartans/weave.js

@@ -54,6 +54,11 @@ function Loom(ctx, warp, threadwidth) {
 
 	ctx.lineWidth = Number(threadwidth || 2);
 
+	// Avoid infinite loop
+	if (warp.length == 0) {
+		return;
+	}
+
 	// Draw the weft
 	for (var x = 0; x < width; ) {
 		for (var i in warp) {
@@ -238,7 +243,11 @@ function init() {
 		presetInput.appendChild(opt);
 	}
 
-	preset();
+	if (presetName) {
+		preset();
+	} else {
+		update();
+	}
 }
 window.addEventListener("load", init);