compute split conic endpoints exactly

tests/PathOpsSimplifyTest.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 "PathOpsExtendedTest.h"
 
 #define TEST(name) { name, #name }
 
@@ skipping 4856 matching lines @@
     path.close();
     path.moveTo(10, 90);
     path.lineTo(110, 90);
     path.lineTo(110, 30);
     path.lineTo(10, 30);
     path.lineTo(10, 90);
     path.close();
     testSimplify(reporter, path, filename);
 }
 
+static void cr514118(skiatest::Reporter* reporter,const char* filename) {
+    SkPath path;
+path.moveTo(SkBits2Float(0x42c80000), SkBits2Float(0x42480000));  // 100, 50
+path.conicTo(SkBits2Float(0x42c80000), SkBits2Float(0x00000000), SkBits2Float(0x42480000), SkBits2Float(0x00000000), SkBits2Float(0x3f3504f3));  // 100, 0, 50, 0, 0.707107f
+path.conicTo(SkBits2Float(0x00000000), SkBits2Float(0x00000000), SkBits2Float(0x00000000), SkBits2Float(0x42480000), SkBits2Float(0x3f3504f3));  // 0, 0, 0, 50, 0.707107f
+path.conicTo(SkBits2Float(0x00000000), SkBits2Float(0x42c80000), SkBits2Float(0x42480000), SkBits2Float(0x42c80000), SkBits2Float(0x3f3504f3));  // 0, 100, 50, 100, 0.707107f
+path.conicTo(SkBits2Float(0x42c80000), SkBits2Float(0x42c80000), SkBits2Float(0x42c80000), SkBits2Float(0x42480000), SkBits2Float(0x3f3504f3));  // 100, 100, 100, 50, 0.707107f
+path.close();
+path.moveTo(SkBits2Float(0x42c80133), SkBits2Float(0x42480000));  // 100.002f, 50
+path.conicTo(SkBits2Float(0x42c80133), SkBits2Float(0x00000000), SkBits2Float(0x42480267), SkBits2Float(0x00000000), SkBits2Float(0x3f3504f3));  // 100.002f, 0, 50.0023f, 0, 0.707107f
+path.conicTo(SkBits2Float(0x3b19b530), SkBits2Float(0x00000000), SkBits2Float(0x3b19b530), SkBits2Float(0x42480000), SkBits2Float(0x3f3504f3));  // 0.00234539f, 0, 0.00234539f, 50, 0.707107f
+path.conicTo(SkBits2Float(0x3b19b530), SkBits2Float(0x42c80000), SkBits2Float(0x42480267), SkBits2Float(0x42c80000), SkBits2Float(0x3f3504f3));  // 0.00234539f, 100, 50.0023f, 100, 0.707107f
+path.conicTo(SkBits2Float(0x42c80133), SkBits2Float(0x42c80000), SkBits2Float(0x42c80133), SkBits2Float(0x42480000), SkBits2Float(0x3f3504f3));  // 100.002f, 100, 100.002f, 50, 0.707107f
+path.close();
+    testSimplify(reporter, path, filename);
+}
+
 static void (*skipTest)(skiatest::Reporter* , const char* filename) = 0;
 static void (*firstTest)(skiatest::Reporter* , const char* filename) = 0;
 static void (*stopTest)(skiatest::Reporter* , const char* filename) = 0;
 
 static TestDesc tests[] = {
+    TEST(cr514118),
     TEST(fuzz864a),
     TEST(testQuads65),
     TEST(testIssue3838_3),
     TEST(testIssue3838),
     TEST(testArc),
     TEST(testTriangle2),
     TEST(testTriangle1),
     TEST(testQuads64),
     TEST(testQuads63),
     TEST(testQuads62),
@@ skipping 430 matching lines @@
 
 DEF_TEST(PathOpsSimplify, reporter) {
     if (runSubTests && runSubTestsFirst) {
         RunTestSet(reporter, subTests, subTestCount, firstSubTest, NULL, stopTest, runReverse);
     }
     RunTestSet(reporter, tests, testCount, firstTest, skipTest, stopTest, runReverse);
     if (runSubTests && !runSubTestsFirst) {
         RunTestSet(reporter, subTests, subTestCount, firstSubTest, NULL, stopTest, runReverse);
     }
 }