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authorGravatar caryclark <caryclark@google.com>2015-07-28 05:12:19 -0700
committerGravatar Commit bot <commit-bot@chromium.org>2015-07-28 05:12:19 -0700
commitbb134333648c5e44e00a95b8323033a6264ecae0 (patch)
treeac500e330c7ac52ef4ed841aa320ecf6a5860433 /tests/PathOpsSimplifyTest.cpp
parent614aa072cbb055a29f37fa25a657313bccc5d666 (diff)
compute split conic endpoints exactly
The divide by w can generate slightly erroneous results even for t == 0 or t == 1. The error in turn defeats detecting a point in common for a pair of curves that travel in opposite directions. Instead, special case endpoints when the t is 0 or 1. TBR=reed@google.com BUG=514118 Review URL: https://codereview.chromium.org/1259513004
Diffstat (limited to 'tests/PathOpsSimplifyTest.cpp')
-rw-r--r--tests/PathOpsSimplifyTest.cpp18
1 files changed, 18 insertions, 0 deletions
diff --git a/tests/PathOpsSimplifyTest.cpp b/tests/PathOpsSimplifyTest.cpp
index 165ee8d11d..8f03ba0051 100644
--- a/tests/PathOpsSimplifyTest.cpp
+++ b/tests/PathOpsSimplifyTest.cpp
@@ -4874,11 +4874,29 @@ static void fuzz864a(skiatest::Reporter* reporter,const char* filename) {
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),