fix mouse sensing function (#12)

index.html

@@ -35,6 +35,7 @@
 		<!-- turtlestitch additions -->
 		<script type="text/javascript" src="stitchcode/turtleShepherd.js"></script>
 		<script type="text/javascript" src="stitchcode/blocks.js"></script>
+		<script type="text/javascript" src="stitchcode/threads.js"></script>
 		<script type="text/javascript" src="stitchcode/objects.js"></script>
 		<script type="text/javascript" src="stitchcode/gui.js"></script>
 		<script type="text/javascript" src="stitchcode/gui-cloud.js"></script>

stitchcode/objects.js

@@ -716,6 +716,25 @@ StageMorph.prototype.mouseLeave = function () {
     this.referencePos = null;
 };
 
+// StageMorph Mouse Coordinates
+
+StageMorph.prototype.reportMouseX = function () {
+    var world = this.world();
+    if (world) {
+        return ((world.hand.position().x - this.center().x) / this.scale)  / this.camera.zoomFactor * 2 + this.controls.center.x;
+    }
+    return 0;
+};
+
+StageMorph.prototype.reportMouseY = function () {
+    var world = this.world();
+    if (world) {
+        return ((this.center().y - world.hand.position().y) / this.scale)  / this.camera.zoomFactor * 2 + this.controls.center.y;
+    }
+    return 0;
+};
+
+
 StageMorph.prototype.originalAdd = StageMorph.prototype.add;
 StageMorph.prototype.add = function (morph) {
     this.originalAdd(morph);

stitchcode/threads.js

@@ -0,0 +1,31 @@
+Process.prototype.reportMouseX = function () {
+    var stage, world;
+    if (this.homeContext.receiver) {
+        stage = this.homeContext.receiver.parentThatIsA(StageMorph);
+        if (stage) {
+            world = stage.world();
+            if (world) {
+				var factor = stage.renderer.isParallelProjection ? 65 / stage.camera.zoomFactor : stage.controls.object.position.length() / 10;
+                return ((world.hand.position().x - stage.center().x)
+                    / stage.scale) / stage.camera.zoomFactor  * 2 + stage.controls.center.x;
+            }
+        }
+    }
+    return 0;
+};
+
+Process.prototype.reportMouseY = function () {
+    var stage, world;
+    if (this.homeContext.receiver) {
+        stage = this.homeContext.receiver.parentThatIsA(StageMorph);
+        if (stage) {
+            world = stage.world();
+            if (world) {
+				var factor = stage.renderer.isParallelProjection ? 65 / stage.camera.zoomFactor : stage.controls.object.position.length() / 10;
+                return ((stage.center().y - world.hand.position().y)
+                    / stage.scale) / stage.camera.zoomFactor * 2 + stage.controls.center.y;
+            }
+        }
+    }
+    return 0;
+};