path ops work in progress

src/pathops/SkPathWriter.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkPathOpsPoint.h"
 #include "SkPathWriter.h"
 
 // wrap path to keep track of whether the contour is initialized and non-empty
@@ skipping 72 matching lines @@
     return fHasMove;
 }
 
 void SkPathWriter::init() {
     fEmpty = true;
     fHasMove = false;
     fMoved = false;
 }
 
 bool SkPathWriter::isClosed() const {
-    return !fEmpty && fFirstPt == fDefer[1];
+    return !fEmpty && SkDPoint::ApproximatelyEqual(fFirstPt, fDefer[1]);
 }
 
 void SkPathWriter::lineTo() {
     if (fDefer[0] == fDefer[1]) {
         return;
     }
     moveTo();
     nudge();
     fEmpty = false;
 #if DEBUG_PATH_CONSTRUCTION
@@ skipping 53 matching lines @@
         return;
     }
     fFirstPt = fDefer[0];
 #if DEBUG_PATH_CONSTRUCTION
     SkDebugf("path.moveTo(%1.9g,%1.9g);\n", fDefer[0].fX, fDefer[0].fY);
 #endif
     fPathPtr->moveTo(fDefer[0].fX, fDefer[0].fY);
     fMoved = false;
     fMoves++;
 }