diff --git a/experimental/Intersection/EdgeDemoApp.mm b/experimental/Intersection/EdgeDemoApp.mm
new file mode 100644
index 0000000..a8b233e
--- /dev/null
+++ b/experimental/Intersection/EdgeDemoApp.mm
@@ -0,0 +1,116 @@
+#include "EdgeWalker_Test.h"
+#include "ShapeOps.h"
+#import "SkCanvas.h"
+#import "SkPaint.h"
+#import "SkWindow.h"
+#include "SkGraphics.h"
+#include "SkCGUtils.h"
+
+class SkSampleView : public SkView {
+public:
+    SkSampleView() {
+        this->setVisibleP(true);
+        this->setClipToBounds(false);
+    };
+protected:
+    virtual void onDraw(SkCanvas* canvas) {
+    // Three circles bounce inside a rectangle. The circles describe three, four
+    // or five points which in turn describe a polygon. The polygon points
+    // bounce inside the circles. The circles rotate and scale over time. The
+    // polygons are combined into a single path, simplified, and stroked.
+    static int step = 0;
+    const int circles = 3;
+    int scales[circles];
+    int angles[circles];
+    int locs[circles * 2];
+    int pts[circles * 2 * 4];
+    int c, p;
+    for (c = 0; c < circles; ++c) {
+        scales[c] = abs(10 - (step + c * 4) % 21);
+        angles[c] = (step + c * 6) % 600;
+        locs[c * 2] = abs(130 - (step + c * 9) % 261);
+        locs[c * 2 + 1] = abs(170 - (step + c * 11) % 341);
+        for (p = 0; p < 4; ++p) {
+            pts[c * 8 + p * 2] = abs(90 - ((step + c * 121 + p * 13) % 190));
+            pts[c * 8 + p * 2 + 1] = abs(110 - ((step + c * 223 + p * 17) % 230));
+        }
+    }
+    SkPath path, out;
+    for (c = 0; c < circles; ++c) {
+        for (p = 0; p < 4; ++p) {
+            SkScalar x = pts[c * 8 + p * 2];
+            SkScalar y = pts[c * 8 + p * 2 + 1];
+            x *= 3 + scales[c] / 10.0f;
+            y *= 3 + scales[c] / 10.0f;
+            SkScalar angle = angles[c] * 3.1415f * 2 / 600;
+            SkScalar temp = x * cos(angle) - y * sin(angle);
+            y = x * sin(angle) + y * cos(angle);
+            x = temp;
+            x += locs[c * 2] * 200 / 130.0f;
+            y += locs[c * 2 + 1] * 200 / 170.0f;
+            x += 50;
+    //        y += 200;
+            if (p == 0) {
+                path.moveTo(x, y);
+            } else {
+                path.lineTo(x, y);
+            }
+        }
+        path.close();
+    }
+    showPath(path, "original:");
+    simplify(path, true, out);
+    showPath(out, "simplified:");
+    SkPaint paint;
+    paint.setAntiAlias(true);
+    paint.setStyle(SkPaint::kStroke_Style);
+    paint.setStrokeWidth(3);
+    paint.setColor(0x3F007fbF);
+    canvas->drawPath(path, paint);
+    paint.setColor(0xFF60FF00);
+    paint.setStrokeWidth(1);
+    canvas->drawColor(SK_ColorWHITE);
+    canvas->drawPath(out, paint);
+    ++step;
+    inval(NULL);
+    }
+private:
+    typedef SkView INHERITED; 
+};
+
+void application_init() {
+    SkGraphics::Init();
+    SkEvent::Init();
+}
+
+void application_term() {
+    SkGraphics::Term();
+    SkEvent::Term();
+}
+
+class FillLayout : public SkView::Layout {
+protected:
+    virtual void onLayoutChildren(SkView* parent) {
+        SkView* view = SkView::F2BIter(parent).next();
+        view->setSize(parent->width(), parent->height());
+    }
+};
+
+#import "SimpleApp.h"
+@implementation SimpleNSView
+
+- (id)initWithDefaults {
+    if (self = [super initWithDefaults]) {
+        fWind = new SkOSWindow(self); 
+        fWind->setLayout(new FillLayout, false);
+        fWind->attachChildToFront(new SkSampleView)->unref();
+    }
+    return self;
+}
+
+- (void)drawRect:(NSRect)dirtyRect {
+    CGContextRef ctx = (CGContextRef)[[NSGraphicsContext currentContext] graphicsPort];
+    SkCGDrawBitmap(ctx, fWind->getBitmap(), 0, 0);
+}
+
+@end