imperial unit toggle

stitchcode/gui.js

@@ -789,8 +789,24 @@ IDE_Morph.prototype.createStatusDisplay = function () {
             function () {
                 return stage.isFastTracked;
             });
-    toggleTurboButton.newLines = 3;
+    toggleTurboButton.columns = 4;
+    toggleTurboButton.newColumn = 3;
     elements.push(toggleTurboButton);
+    
+    var toggleUnitButton = new ToggleMorph(
+            'checkbox',
+            null,
+            function () {
+                stage.turtleShepherd.toggleMetric();
+                stage.scene.grid.draw();
+                stage.renderer.changed = true;
+            },
+            'Imperial units',
+            function () {
+                return !stage.turtleShepherd.isMetric();
+            });
+    toggleUnitButton.newLines = 3;
+    elements.push(toggleUnitButton);    
 
     var downloadSVGButton = new PushButtonMorph(
         null,

stitchcode/objects.js

@@ -386,8 +386,14 @@ StageMorph.prototype.initScene = function () {
 
         this.lines = [];
 
-        limit = this.interval.x * 50;
-
+		c = 2.54;
+		if (myself.turtleShepherd.isMetric()) {
+			this.interval = new Point(5, 5);
+			limit = this.interval.x * 50;
+		} else {
+			this.interval = new Point(Math.round(5 * c), Math.round(5 * c));
+			limit = Math.round(this.interval.x * 50 * c);
+		}
         for (x = -limit / this.interval.x; x <= limit / this.interval.x; x++) {
             p1 = new THREE.Vector3(x * this.interval.x, -limit, 0);
             p2 = new THREE.Vector3(x * this.interval.x, limit, 0);
@@ -404,7 +410,11 @@ StageMorph.prototype.initScene = function () {
             this.lines.push(l);
         }
 
-        limit = this.interval.x * 200;
+		if (myself.turtleShepherd.isMetric())
+			limit = this.interval.x * 200;
+		else
+			limit = Math.round(this.interval.x * 200 * c);
+
 
         for (x = -limit/10 / this.interval.x; x <= limit/10 / this.interval.x; x++) {
             p1 = new THREE.Vector3(x * this.interval.x * 10, -limit,0);

stitchcode/turtleShepherd.js

@@ -15,8 +15,10 @@ TurtleShepherd.prototype.init = function() {
     this.showStitches = false;
     this.showGrid = false;
     this.showTurtle = false;
+    this.metric = true;
 };
 
+
 TurtleShepherd.prototype.clear = function() {
     this.cache = [];
     this.w = 0;
@@ -33,6 +35,20 @@ TurtleShepherd.prototype.clear = function() {
     this.jumpCount = 0;
 };
 
+
+TurtleShepherd.prototype.toggleMetric = function() {
+    return this.metric = !this.metric;
+};
+
+TurtleShepherd.prototype.setMetric = function(b) {
+    this.metric = b;
+};
+
+TurtleShepherd.prototype.isMetric = function() {
+    return this.metric;
+};
+
+
 TurtleShepherd.prototype.hasSteps = function() {
     return this.steps > 0;
 };
@@ -45,9 +61,17 @@ TurtleShepherd.prototype.getJumpCount = function() {
 };
 
 TurtleShepherd.prototype.getDimensions = function() {
-    w= ((this.maxX - this.minX)/5).toFixed(2).toString();
-    h= ((this.maxY - this.minY)/5).toFixed(2).toString();
-    return w + " x " + h + " mm";
+	
+	if (this.metric) {
+		c = 1;
+		unit = "mm";
+	} else { 
+		c = 0.03937;
+		unit = "in";
+	}
+    w= ((this.maxX - this.minX)/5 * c).toFixed(2).toString();
+    h= ((this.maxY - this.minY)/5 * c).toFixed(2).toString();
+	return w + " x " + h + " " + unit;
 };