cumulative pathops patch

Replace the implicit curve intersection with a geometric curve intersection. The implicit intersection proved mathematically unstable and took a long time to zero in on an answer.

Use pointers instead of indices to refer to parts of curves. Indices required awkward renumbering.

Unify t and point values so that small intervals can be eliminated in one pass.

Break cubics up front to eliminate loops and cusps.

Make the Simplify and Op code more regular and eliminate arbitrary differences.

Add a builder that takes an array of paths and operators.

Delete unused code.

BUG=skia:3588
R=reed@google.com

Review URL: https://codereview.chromium.org/1037573004
diff --git a/tests/PathOpsExtendedTest.h b/tests/PathOpsExtendedTest.h
index 5f7e972..0428457 100644
--- a/tests/PathOpsExtendedTest.h
+++ b/tests/PathOpsExtendedTest.h
@@ -17,6 +17,7 @@
 #include "Test.h"
 
 DECLARE_bool(runFail);
+DECLARE_bool(runBinary);
 
 struct PathOpsThreadState;
 
@@ -26,7 +27,8 @@
 };
 
 //extern int comparePaths(const SkPath& one, const SkPath& two);
-extern int comparePaths(const SkPath& one, const SkPath& two, SkBitmap& bitmap);
+extern int comparePaths(skiatest::Reporter* reporter, const char* filename,
+                        const SkPath& one, const SkPath& two, SkBitmap& bitmap);
 extern bool drawAsciiPaths(const SkPath& one, const SkPath& two, bool drawPaths);
 extern void showOp(const SkPathOp op);
 extern bool testPathOp(skiatest::Reporter* reporter, const SkPath& a, const SkPath& b,
@@ -40,6 +42,8 @@
 extern bool testSimplify(SkPath& path, bool useXor, SkPath& out, PathOpsThreadState& state,
                          const char* pathStr);
 extern bool testSimplify(skiatest::Reporter* reporter, const SkPath& path, const char* filename);
+extern bool testSimplifyCheck(skiatest::Reporter* reporter, const SkPath& path,
+                              const char* filename, bool checkFail);
 
 void initializeTests(skiatest::Reporter* reporter, const char* testName);
 void outputProgress(char* ramStr, const char* pathStr, SkPath::FillType );
@@ -47,6 +51,7 @@
 
 void RunTestSet(skiatest::Reporter* reporter, TestDesc tests[], size_t count,
                 void (*firstTest)(skiatest::Reporter* , const char* filename),
+                void (*skipTest)(skiatest::Reporter* , const char* filename),
                 void (*stopTest)(skiatest::Reporter* , const char* filename), bool reverse);
 void ShowTestArray();
 void ShowTestName(PathOpsThreadState* data, int a, int b, int c, int d);