diff --git a/samplecode/SampleShapes.cpp b/samplecode/SampleShapes.cpp
index 07f2d00..b92614b 100644
--- a/samplecode/SampleShapes.cpp
+++ b/samplecode/SampleShapes.cpp
@@ -60,8 +60,6 @@
         for (size_t i = 0; i < SK_ARRAY_COUNT(fMatrixRefs); i++) {
             SkSafeRef(fMatrixRefs[i] = fGroup.getShapeMatrixRef(i));
         }
-        
-        fAngle = 0;
     }
     
     virtual ~ShapesView() {
@@ -98,15 +96,15 @@
 #endif
     }
     
-    int fAngle;
-    
     virtual void onDraw(SkCanvas* canvas) {
         this->drawBG(canvas);
         
+        SkScalar angle = SampleCode::GetAnimScalar(SkIntToScalar(360)/2,
+                                                   SkIntToScalar(360));
+
         SkMatrix saveM = *fMatrixRefs[3];
-        fAngle = (fAngle + 5) % 360;
         SkScalar c = SkIntToScalar(50);
-        fMatrixRefs[3]->preRotate(SkIntToScalar(fAngle), c, c);
+        fMatrixRefs[3]->preRotate(angle, c, c);
         
         SkMatrix matrix;