compute initial winding from projected rays

tests/PathOpsAngleIdeas.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "PathOpsTestCommon.h"
 #include "SkIntersections.h"
 #include "SkOpContour.h"
 #include "SkOpSegment.h"
@@ skipping 400 matching lines @@
     shortQuad[0] = quad[0].asSkPoint();
     shortQuad[1] = quad[1].asSkPoint();
     shortQuad[2] = quad[2].asSkPoint();
     contour->addQuad(shortQuad, allocator);
 }
 
 static void testQuadAngles(skiatest::Reporter* reporter, const SkDQuad& quad1, const SkDQuad& quad2,
         int testNo, SkChunkAlloc* allocator) {
     SkPoint shortQuads[2][3];
 
-    SkOpContour contour;
-    SkOpGlobalState state(NULL  SkDEBUGPARAMS(&contour));
+    SkOpContourHead contour;
+    SkOpGlobalState state(NULL, &contour);
     contour.init(&state, false, false);
     makeSegment(&contour, quad1, shortQuads[0], allocator);
     makeSegment(&contour, quad1, shortQuads[1], allocator);
     SkOpSegment* seg1 = contour.first();
     seg1->debugAddAngle(0, 1, allocator);
     SkOpSegment* seg2 = seg1->next();
     seg2->debugAddAngle(0, 1, allocator);
     int realOverlap = PathOpsAngleTester::ConvexHullOverlaps(*seg1->debugLastAngle(),
             *seg2->debugLastAngle());
     const SkDPoint& origin = quad1[0];
@@ skipping 421 matching lines @@
             step /= 2;
         }
 #ifdef SK_DEBUG
 //        DumpQ(q1, q2, 999);
 #endif
     }
     if (gPathOpsAngleIdeasVerbose) {
         SkDebugf("maxR=%1.9g\n", maxR);
     }
 }