shape ops work in progress

first 100,000 random cubic/cubic intersections working

git-svn-id: http://skia.googlecode.com/svn/trunk@7380 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/experimental/Intersection/QuadraticReduceOrder.cpp b/experimental/Intersection/QuadraticReduceOrder.cpp
index aa1d058..096f6b6 100644
--- a/experimental/Intersection/QuadraticReduceOrder.cpp
+++ b/experimental/Intersection/QuadraticReduceOrder.cpp
@@ -92,7 +92,7 @@
     if (root) {
         _Point extrema;
         extrema.x = interp_quad_coords(quad[0].x, quad[1].x, quad[2].x, tValue);
-        extrema.y = interp_quad_coords(quad[0].x, quad[1].x, quad[2].x, tValue);
+        extrema.y = interp_quad_coords(quad[0].y, quad[1].y, quad[2].y, tValue);
         // sameSide > 0 means mid is smaller than either [0] or [2], so replace smaller
         int replace;
         if (useX) {