diff --git a/samplecode/SampleWarp.cpp b/samplecode/SampleWarp.cpp
index 606144c..bf4ef0d 100644
--- a/samplecode/SampleWarp.cpp
+++ b/samplecode/SampleWarp.cpp
@@ -327,6 +327,7 @@
 public:
 	WarpView() {
         SkBitmap bm;
+//        SkImageDecoder::DecodeFile("/skimages/marker.png", &bm);
         SkImageDecoder::DecodeFile("/skimages/logo.gif", &bm);
    //     SkImageDecoder::DecodeFile("/beach_shot.JPG", &bm);
         fBitmap = bm;
@@ -387,7 +388,7 @@
             return orig;
         }
         
-        const SkScalar period = 20;
+        const SkScalar period = 10 + dragLength/4;
         const SkScalar mag = dragLength / 3;
         
         SkScalar d = length / (period);