Merge pull request #1 from jonasb/master

Tweak
stg · Oct 23, 2012 · 3579219 · 3579219
2 parents 57bb97d + d7a20d2
commit 3579219
Showing 1 changed file with 12 additions and 7 deletions.
diff --git a/voronoi.htm b/voronoi.htm
@@ -54,9 +54,9 @@
 function render() {
 
 	// Fetch rendering parameters
-	var size_factor = 1.0 - (parseInt(document.getElementById("r_vertex").value) / 100);
-	var edge_factor = 1.0 - (parseInt(document.getElementById("r_bezier").value) / 100);
-	var join_factor =       (parseInt(document.getElementById("r_reduce").value) / 100);
+	var size_factor = 1.0 - (parseIntOr(document.getElementById("r_vertex").value, 0) / 100);
+	var edge_factor = 1.0 - (parseIntOr(document.getElementById("r_bezier").value, 0) / 100);
+	var join_factor =       (parseIntOr(document.getElementById("r_reduce").value, 0) / 100);
 
 	// Clear SVG
 	svgDocument.style.width = size_w;
@@ -273,16 +273,16 @@
 }
 
 function add_random() {
-	var count = parseInt(document.getElementById("randoms").value);
+	var count = parseIntOr(document.getElementById("randoms").value, 0);
 	for(var n = 0; n < count; n++) {
   	seeds[seeds.length] = {x:Math.random() * size_w, y:Math.random() * size_h};
 	}
 }
 
 function clear_all() {
 	seeds = new Array();
-	size_w = parseInt(document.getElementById("clear_w").value);
-	size_h = parseInt(document.getElementById("clear_h").value);
+	size_w = parseIntOr(document.getElementById("clear_w").value, 0);
+	size_h = parseIntOr(document.getElementById("clear_h").value, 0);
 }
 
 function save_svg() {
@@ -292,6 +292,11 @@
 	saveAs(blob, "document.svg");
 }
 
+function parseIntOr(v, def) {
+	v = parseInt(v);
+	return isNaN(v) ? def : v;
+}
+
 		</script>
 	</head>
 	<body onload="init();" onkeydown="key_state(event);" onkeyup="key_state(event);" onmousemove="mouse_move(event);" onmousedown="mouse_click(event);" style="font-family:verdana;background:#e0e0e0;">
@@ -315,4 +320,4 @@
 			</td></tr></table>
 		</div>
 	</body>
-</html>
+</html>