path ops -- rewrite angle sort

tests/PathOpsCubicToQuadsTest.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 "PathOpsCubicIntersectionTestData.h"
 #include "PathOpsQuadIntersectionTestData.h"
 #include "PathOpsTestCommon.h"
 #include "SkGeometry.h"
 #include "SkIntersections.h"
 #include "SkPathOpsRect.h"
 #include "SkReduceOrder.h"
 #include "Test.h"
 
 static void test(skiatest::Reporter* reporter, const SkDCubic* cubics, const char* name,
                  int firstTest, size_t testCount) {
     for (size_t index = firstTest; index < testCount; ++index) {
         const SkDCubic& cubic = cubics[index];
         double precision = cubic.calcPrecision();
         SkTDArray<SkDQuad> quads;
         CubicToQuads(cubic, precision, quads);
-        if (quads.count() != 1) {
+        if (quads.count() != 1 && quads.count() != 2) {
             SkDebugf("%s [%d] cubic to quadratics failed count=%d\n", name, static_cast<int>(index),
                     quads.count());
         }
         REPORTER_ASSERT(reporter, quads.count() == 1);
     }
 }
 
 static void test(skiatest::Reporter* reporter, const SkDQuad* quadTests, const char* name,
                  int firstTest, size_t testCount) {
     for (size_t index = firstTest; index < testCount; ++index) {
         const SkDQuad& quad = quadTests[index];
         SkDCubic cubic = quad.toCubic();
         double precision = cubic.calcPrecision();
         SkTDArray<SkDQuad> quads;
         CubicToQuads(cubic, precision, quads);
-        if (quads.count() != 1) {
+        if (quads.count() != 1 && quads.count() != 2) {
             SkDebugf("%s [%d] cubic to quadratics failed count=%d\n", name, static_cast<int>(index),
                     quads.count());
         }
-        REPORTER_ASSERT(reporter, quads.count() == 1);
+        REPORTER_ASSERT(reporter, quads.count() <= 2);
     }
 }
 
 static void testC(skiatest::Reporter* reporter, const SkDCubic* cubics, const char* name,
                   int firstTest, size_t testCount) {
     // test if computed line end points are valid
     for (size_t index = firstTest; index < testCount; ++index) {
         const SkDCubic& cubic = cubics[index];
         double precision = cubic.calcPrecision();
         SkTDArray<SkDQuad> quads;
@@ skipping 139 matching lines @@
 }
 
 static void PathOpsCubicToQuadsTest(skiatest::Reporter* reporter) {
     CubicToQuads_Test(reporter);
     CubicsToQuadratics_OneOffTest(reporter);
     CubicsToQuadratics_OneOffTests(reporter);
 }
 
 #include "TestClassDef.h"
 DEFINE_TESTCLASS_SHORT(PathOpsCubicToQuadsTest)