Make SkPath::isOval() and SkPath::isRRect return the orientation and starting index.

These are tracked in SkPathRef.

Unit tests are updated to test that the returned values are correct.
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2012233002

Review-Url: https://codereview.chromium.org/2012233002

2 files changed, 351 insertions, 226 deletions

diff --git a/tests/PathTest.cpp b/tests/PathTest.cpp
index dd6f41cbfa..36e93074ef 100644
--- a/tests/PathTest.cpp
+++ b/tests/PathTest.cpp
@@ -2215,8 +2215,22 @@ static void write_and_read_back(skiatest::Reporter* reporter,
     REPORTER_ASSERT(reporter, readBack.getConvexityOrUnknown() ==
                               p.getConvexityOrUnknown());
 
+    SkRect oval0, oval1;
+    SkPath::Direction dir0, dir1;
+    unsigned start0, start1;
     REPORTER_ASSERT(reporter, readBack.isOval(nullptr) == p.isOval(nullptr));
-
+    if (p.isOval(&oval0, &dir0, &start0) && readBack.isOval(&oval1, &dir1, &start1)) {
+        REPORTER_ASSERT(reporter, oval0 == oval1);
+        REPORTER_ASSERT(reporter, dir0 == dir1);
+        REPORTER_ASSERT(reporter, start0 == start1);
+    }
+    REPORTER_ASSERT(reporter, readBack.isRRect(nullptr) == p.isRRect(nullptr));
+    SkRRect rrect0, rrect1;
+    if (p.isRRect(&rrect0, &dir0, &start0) && readBack.isRRect(&rrect1, &dir1, &start1)) {
+        REPORTER_ASSERT(reporter, rrect0 == rrect1);
+        REPORTER_ASSERT(reporter, dir0 == dir1);
+        REPORTER_ASSERT(reporter, start0 == start1);
+    }
     const SkRect& origBounds = p.getBounds();
     const SkRect& readBackBounds = readBack.getBounds();
 
@@ -2890,11 +2904,16 @@ static void check_for_circle(skiatest::Reporter* reporter,
                              SkPathPriv::FirstDirection expectedDir) {
     SkRect rect = SkRect::MakeEmpty();
     REPORTER_ASSERT(reporter, path.isOval(&rect) == expectedCircle);
-    REPORTER_ASSERT(reporter, SkPathPriv::CheapIsFirstDirection(path, expectedDir));
-
-    if (expectedCircle) {
+    SkPath::Direction isOvalDir;
+    unsigned isOvalStart;
+    if (path.isOval(&rect, &isOvalDir, &isOvalStart)) {
         REPORTER_ASSERT(reporter, rect.height() == rect.width());
+        REPORTER_ASSERT(reporter, SkPathPriv::AsFirstDirection(isOvalDir) == expectedDir);
+        SkPath tmpPath;
+        tmpPath.addOval(rect, isOvalDir, isOvalStart);
+        REPORTER_ASSERT(reporter, path == tmpPath);
     }
+    REPORTER_ASSERT(reporter, SkPathPriv::CheapIsFirstDirection(path, expectedDir));
 }
 
 static void test_circle_skew(skiatest::Reporter* reporter,
@@ -2963,14 +2982,12 @@ static void test_circle_mirror_x(skiatest::Reporter* reporter,
     m.reset();
     m.setScaleX(-SK_Scalar1);
     path.transform(m, &tmp);
-
     if (SkPathPriv::kCW_FirstDirection == dir) {
         dir = SkPathPriv::kCCW_FirstDirection;
     } else {
         REPORTER_ASSERT(reporter, SkPathPriv::kCCW_FirstDirection == dir);
         dir = SkPathPriv::kCW_FirstDirection;
     }
-
     check_for_circle(reporter, tmp, true, dir);
 }
 
@@ -3018,6 +3035,9 @@ static void test_circle_with_direction(skiatest::Reporter* reporter,
     test_circle_rotate(reporter, path, dir);
     test_circle_translate(reporter, path, dir);
     test_circle_skew(reporter, path, dir);
+    test_circle_mirror_x(reporter, path, dir);
+    test_circle_mirror_y(reporter, path, dir);
+    test_circle_mirror_xy(reporter, path, dir);
 
     // circle at an offset at (10, 10)
     path.reset();
@@ -3031,6 +3051,18 @@ static void test_circle_with_direction(skiatest::Reporter* reporter,
     test_circle_mirror_x(reporter, path, dir);
     test_circle_mirror_y(reporter, path, dir);
     test_circle_mirror_xy(reporter, path, dir);
+
+    // Try different starting points for the contour.
+    for (unsigned start = 0; start < 4; ++start) {
+        path.reset();
+        path.addOval(SkRect::MakeXYWH(20, 10, 5, 5), inDir, start);
+        test_circle_rotate(reporter, path, dir);
+        test_circle_translate(reporter, path, dir);
+        test_circle_skew(reporter, path, dir);
+        test_circle_mirror_x(reporter, path, dir);
+        test_circle_mirror_y(reporter, path, dir);
+        test_circle_mirror_xy(reporter, path, dir);
+    }
 }
 
 static void test_circle_with_add_paths(skiatest::Reporter* reporter) {
@@ -3060,6 +3092,7 @@ static void test_circle_with_add_paths(skiatest::Reporter* reporter) {
     // circle + empty (translate)
     path = circle;
     path.addPath(empty, translate);
+
     check_for_circle(reporter, path, true, SkPathPriv::AsFirstDirection(kCircleDir));
 
     // test reverseAddPath
@@ -3102,17 +3135,23 @@ static void test_oval(skiatest::Reporter* reporter) {
     SkRect rect;
     SkMatrix m;
     SkPath path;
+    unsigned start = 0;
+    SkPath::Direction dir = SkPath::kCCW_Direction;
 
     rect = SkRect::MakeWH(SkIntToScalar(30), SkIntToScalar(50));
     path.addOval(rect);
 
+    // Defaults to dir = CW and start = 1
     REPORTER_ASSERT(reporter, path.isOval(nullptr));
 
     m.setRotate(SkIntToScalar(90));
     SkPath tmp;
     path.transform(m, &tmp);
-    // an oval rotated 90 degrees is still an oval.
-    REPORTER_ASSERT(reporter, tmp.isOval(nullptr));
+    // an oval rotated 90 degrees is still an oval. The start index changes from 1 to 2. Direction
+    // is unchanged.
+    REPORTER_ASSERT(reporter, tmp.isOval(nullptr, &dir, &start));
+    REPORTER_ASSERT(reporter, 2 == start);
+    REPORTER_ASSERT(reporter, SkPath::kCW_Direction == dir);
 
     m.reset();
     m.setRotate(SkIntToScalar(30));
@@ -3150,7 +3189,9 @@ static void test_oval(skiatest::Reporter* reporter) {
     tmp.reset();
     tmp.addOval(rect);
     path = tmp;
-    REPORTER_ASSERT(reporter, path.isOval(nullptr));
+    REPORTER_ASSERT(reporter, path.isOval(nullptr, &dir, &start));
+    REPORTER_ASSERT(reporter, SkPath::kCW_Direction == dir);
+    REPORTER_ASSERT(reporter, 1 == start);
 }
 
 static void test_empty(skiatest::Reporter* reporter, const SkPath& p) {
diff --git a/tests/RRectInPathTest.cpp b/tests/RRectInPathTest.cpp
index c6b1d9c15e..5b7d17d9ce 100644
--- a/tests/RRectInPathTest.cpp
+++ b/tests/RRectInPathTest.cpp
@@ -8,24 +8,40 @@
 #include "SkMatrix.h"
 #include "SkPath.h"
 #include "SkPathRef.h"
-#include "SkPathOps.h"
 #include "SkRRect.h"
 #include "Test.h"
 
-static SkRRect path_contains_rrect(skiatest::Reporter* reporter, const SkPath& path) {
+static SkRRect path_contains_rrect(skiatest::Reporter* reporter, const SkPath& path,
+                                   SkPath::Direction* dir, unsigned* start) {
     SkRRect out;
-    REPORTER_ASSERT(reporter, path.isRRect(&out));
-    SkPath path2, xorBoth;
-    path2.addRRect(out);
-    if (path == path2) {
-        return out;
+    REPORTER_ASSERT(reporter, path.isRRect(&out, dir, start));
+    SkPath recreatedPath;
+    recreatedPath.addRRect(out, *dir, *start);
+    REPORTER_ASSERT(reporter, path == recreatedPath);
+    // Test that rotations/mirrors of the rrect path are still rrect paths and the returned
+    // parameters for the transformed paths are correct.
+    static const SkMatrix kMatrices[] = {
+        SkMatrix::MakeScale(1, 1),
+        SkMatrix::MakeScale(-1, 1),
+        SkMatrix::MakeScale(1, -1),
+        SkMatrix::MakeScale(-1, -1),
+    };
+    for (auto& m : kMatrices) {
+        SkPath xformed;
+        path.transform(m, &xformed);
+        SkRRect xrr = SkRRect::MakeRect(SkRect::MakeEmpty());
+        SkPath::Direction xd = SkPath::kCCW_Direction;
+        unsigned xs = ~0U;
+        REPORTER_ASSERT(reporter, xformed.isRRect(&xrr, &xd, &xs));
+        recreatedPath.reset();
+        recreatedPath.addRRect(xrr, xd, xs);
+        REPORTER_ASSERT(reporter, recreatedPath == xformed);
     }
-    Op(path, path2, SkPathOp::kXOR_SkPathOp, &xorBoth);
-    REPORTER_ASSERT(reporter, xorBoth.isEmpty());
     return out;
 }
 
-static SkRRect inner_path_contains_rrect(skiatest::Reporter* reporter, const SkRRect& in) {
+static SkRRect inner_path_contains_rrect(skiatest::Reporter* reporter, const SkRRect& in,
+                                         SkPath::Direction dir, unsigned start) {
     switch (in.getType()) {
         case SkRRect::kEmpty_Type:
         case SkRRect::kRect_Type:
@@ -35,157 +51,192 @@ static SkRRect inner_path_contains_rrect(skiatest::Reporter* reporter, const SkR
             break;
     }
     SkPath path;
-    path.addRRect(in);
-    return path_contains_rrect(reporter, path);
+    path.addRRect(in, dir, start);
+    SkPath::Direction outDir;
+    unsigned outStart;
+    SkRRect rrect = path_contains_rrect(reporter, path, &outDir, &outStart);
+    REPORTER_ASSERT(reporter, outDir == dir && outStart == start);
+    return rrect;
 }
 
-static void path_contains_rrect_check(skiatest::Reporter* reporter, const SkRRect& in) {
-    SkRRect out = inner_path_contains_rrect(reporter, in);
+static void path_contains_rrect_check(skiatest::Reporter* reporter, const SkRRect& in,
+                                      SkPath::Direction dir, unsigned start) {
+    SkRRect out = inner_path_contains_rrect(reporter, in, dir, start);
     if (in != out) {
         SkDebugf("");
     }
     REPORTER_ASSERT(reporter, in == out);
 }
 
-static void path_contains_rrect_nocheck(skiatest::Reporter* reporter, const SkRRect& in) {
-    SkRRect out = inner_path_contains_rrect(reporter, in);
+static void path_contains_rrect_nocheck(skiatest::Reporter* reporter, const SkRRect& in,
+                                        SkPath::Direction dir, unsigned start) {
+    SkRRect out = inner_path_contains_rrect(reporter, in, dir, start);
     if (in == out) {
         SkDebugf("");
     }
 }
 
 static void path_contains_rrect_check(skiatest::Reporter* reporter, const SkRect& r,
-        SkVector v[4]) {
+        SkVector v[4], SkPath::Direction dir, unsigned start) {
     SkRRect rrect;
     rrect.setRectRadii(r, v);
-    path_contains_rrect_check(reporter, rrect);
+    path_contains_rrect_check(reporter, rrect, dir, start);
 }
 
 class ForceIsRRect_Private {
 public:
-    ForceIsRRect_Private(SkPath* path) {
-        path->fPathRef->setIsRRect(true);
+    ForceIsRRect_Private(SkPath* path, SkPath::Direction dir, unsigned start) {
+        path->fPathRef->setIsRRect(true, dir == SkPath::kCCW_Direction, start);
     }
 };
 
-static void force_path_contains_rrect(skiatest::Reporter* reporter, SkPath& path) {
-    ForceIsRRect_Private force_rrect(&path);
-    path_contains_rrect(reporter, path);
+static void force_path_contains_rrect(skiatest::Reporter* reporter, SkPath& path,
+                                      SkPath::Direction dir, unsigned start) {
+    ForceIsRRect_Private force_rrect(&path, dir, start);
+    SkPath::Direction outDir;
+    unsigned outStart;
+    path_contains_rrect(reporter, path, &outDir, &outStart);
+    REPORTER_ASSERT(reporter, outDir == dir && outStart == start);
 }
 
 static void test_undetected_paths(skiatest::Reporter* reporter) {
+    // We use a dummy path to get the exact conic weight used by SkPath for a circular arc. This
+    // allows our local, hand-crafted, artisanal round rect paths below to exactly match the
+    // factory made corporate paths produced by SkPath.
+    SkPath dummyPath;
+    dummyPath.addCircle(0, 0, 10);
+    SkPath::RawIter iter(dummyPath);
+    SkPoint dummyPts[4];
+    SkPath::Verb v = iter.next(dummyPts);
+    REPORTER_ASSERT(reporter, SkPath::kMove_Verb == v);
+    v = iter.next(dummyPts);
+    REPORTER_ASSERT(reporter, SkPath::kConic_Verb == v);
+    const SkScalar weight = iter.conicWeight();
+
     SkPath path;
     path.moveTo(0, 62.5f);
     path.lineTo(0, 3.5f);
-    path.conicTo(0, 0, 3.5f, 0, 0.70710677f);
+    path.conicTo(0, 0, 3.5f, 0, weight);
     path.lineTo(196.5f, 0);
-    path.conicTo(200, 0, 200, 3.5f, 0.70710677f);
+    path.conicTo(200, 0, 200, 3.5f, weight);
     path.lineTo(200, 62.5f);
-    path.conicTo(200, 66, 196.5f, 66, 0.70710677f);
+    path.conicTo(200, 66, 196.5f, 66, weight);
     path.lineTo(3.5f, 66);
-    path.conicTo(0, 66, 0, 62.5, 0.70710677f);
+    path.conicTo(0, 66, 0, 62.5, weight);
     path.close();
-    force_path_contains_rrect(reporter, path);
+    force_path_contains_rrect(reporter, path, SkPath::kCW_Direction, 6);
 
     path.reset();
     path.moveTo(0, 81.5f);
     path.lineTo(0, 3.5f);
-    path.conicTo(0, 0, 3.5f, 0, 0.70710677f);
+    path.conicTo(0, 0, 3.5f, 0, weight);
     path.lineTo(149.5, 0);
-    path.conicTo(153, 0, 153, 3.5f, 0.70710677f);
+    path.conicTo(153, 0, 153, 3.5f, weight);
     path.lineTo(153, 81.5f);
-    path.conicTo(153, 85, 149.5f, 85, 0.70710677f);
+    path.conicTo(153, 85, 149.5f, 85, weight);
     path.lineTo(3.5f, 85);
-    path.conicTo(0, 85, 0, 81.5f, 0.70710677f);
+    path.conicTo(0, 85, 0, 81.5f, weight);
     path.close();
-    force_path_contains_rrect(reporter, path);
+    force_path_contains_rrect(reporter, path, SkPath::kCW_Direction, 6);
 
     path.reset();
     path.moveTo(14, 1189);
     path.lineTo(14, 21);
-    path.conicTo(14, 14, 21, 14, 0.70710677f);
+    path.conicTo(14, 14, 21, 14, weight);
     path.lineTo(1363, 14);
-    path.conicTo(1370, 14, 1370, 21, 0.70710677f);
+    path.conicTo(1370, 14, 1370, 21, weight);
     path.lineTo(1370, 1189);
-    path.conicTo(1370, 1196, 1363, 1196, 0.70710677f);
+    path.conicTo(1370, 1196, 1363, 1196, weight);
     path.lineTo(21, 1196);
-    path.conicTo(14, 1196, 14, 1189, 0.70710677f);
+    path.conicTo(14, 1196, 14, 1189, weight);
     path.close();
-    force_path_contains_rrect(reporter, path);
+    force_path_contains_rrect(reporter, path, SkPath::kCW_Direction, 6);
 
     path.reset();
     path.moveTo(14, 1743);
     path.lineTo(14, 21);
-    path.conicTo(14, 14, 21, 14, 0.70710677f);
+    path.conicTo(14, 14, 21, 14, weight);
     path.lineTo(1363, 14);
-    path.conicTo(1370, 14, 1370, 21, 0.70710677f);
+    path.conicTo(1370, 14, 1370, 21, weight);
     path.lineTo(1370, 1743);
-    path.conicTo(1370, 1750, 1363, 1750, 0.70710677f);
+    path.conicTo(1370, 1750, 1363, 1750, weight);
     path.lineTo(21, 1750);
-    path.conicTo(14, 1750, 14, 1743, 0.70710677f);
+    path.conicTo(14, 1750, 14, 1743, weight);
     path.close();
-    force_path_contains_rrect(reporter, path);
+    force_path_contains_rrect(reporter, path, SkPath::kCW_Direction, 6);
 }
 
 static const SkScalar kWidth = 100.0f;
 static const SkScalar kHeight = 100.0f;
 
 static void test_tricky_radii(skiatest::Reporter* reporter) {
-    {
-        // crbug.com/458522
-        SkRRect rr;
-        const SkRect bounds = { 3709, 3709, 3709 + 7402, 3709 + 29825 };
-        const SkScalar rad = 12814;
-        const SkVector vec[] = { { rad, rad }, { 0, rad }, { rad, rad }, { 0, rad } };
-        rr.setRectRadii(bounds, vec);
-        path_contains_rrect_check(reporter, rr);
-    }
-
-    {
-        // crbug.com//463920
-        SkRect r = SkRect::MakeLTRB(0, 0, 1009, 33554432.0);
-        SkVector radii[4] = {
-            { 13.0f, 8.0f }, { 170.0f, 2.0 }, { 256.0f, 33554432.0 }, { 110.0f, 5.0f }
-        };
-        SkRRect rr;
-        rr.setRectRadii(r, radii);
-        path_contains_rrect_nocheck(reporter, rr);
+    for (auto dir : {SkPath::kCW_Direction, SkPath::kCCW_Direction}) {
+        for (int start = 0; start < 8; ++start) {
+            {
+                // crbug.com/458522
+                SkRRect rr;
+                const SkRect bounds = { 3709, 3709, 3709 + 7402, 3709 + 29825 };
+                const SkScalar rad = 12814;
+                const SkVector vec[] = { { rad, rad }, { 0, rad }, { rad, rad }, { 0, rad } };
+                rr.setRectRadii(bounds, vec);
+                path_contains_rrect_check(reporter, rr, dir, start);
+            }
+
+            {
+                // crbug.com//463920
+                SkRect r = SkRect::MakeLTRB(0, 0, 1009, 33554432.0);
+                SkVector radii[4] = {
+                    { 13.0f, 8.0f }, { 170.0f, 2.0 }, { 256.0f, 33554432.0 }, { 110.0f, 5.0f }
+                };
+                SkRRect rr;
+                rr.setRectRadii(r, radii);
+                path_contains_rrect_nocheck(reporter, rr, dir, start);
+            }
+        }
     }
 }
 
 static void test_empty_crbug_458524(skiatest::Reporter* reporter) {
-    SkRRect rr;
-    const SkRect bounds = { 3709, 3709, 3709 + 7402, 3709 + 29825 };
-    const SkScalar rad = 40;
-    rr.setRectXY(bounds, rad, rad);
-    path_contains_rrect_check(reporter, rr);
-
-    SkRRect other;
-    SkMatrix matrix;
-    matrix.setScale(0, 1);
-    rr.transform(matrix, &other);
-    path_contains_rrect_check(reporter, rr);
+    for (auto dir : {SkPath::kCW_Direction, SkPath::kCCW_Direction}) {
+        for (int start = 0; start < 8; ++start) {
+            SkRRect rr;
+            const SkRect bounds = { 3709, 3709, 3709 + 7402, 3709 + 29825 };
+            const SkScalar rad = 40;
+            rr.setRectXY(bounds, rad, rad);
+            path_contains_rrect_check(reporter, rr, dir, start);
+
+            SkRRect other;
+            SkMatrix matrix;
+            matrix.setScale(0, 1);
+            rr.transform(matrix, &other);
+            path_contains_rrect_check(reporter, rr, dir, start);
+        }
+    }
 }
 
 static void test_inset(skiatest::Reporter* reporter) {
-    SkRRect rr, rr2;
-    SkRect r = { 0, 0, 100, 100 };
-
-    rr.setRect(r);
-    rr.inset(-20, -20, &rr2);
-    path_contains_rrect_check(reporter, rr);
-
-    rr.inset(20, 20, &rr2);
-    path_contains_rrect_check(reporter, rr);
-
-    rr.inset(r.width()/2, r.height()/2, &rr2);
-    path_contains_rrect_check(reporter, rr);
-
-    rr.setRectXY(r, 20, 20);
-    rr.inset(19, 19, &rr2);
-    path_contains_rrect_check(reporter, rr);
-    rr.inset(20, 20, &rr2);
-    path_contains_rrect_check(reporter, rr);
+    for (auto dir : {SkPath::kCW_Direction, SkPath::kCCW_Direction}) {
+        for (int start = 0; start < 8; ++start) {
+            SkRRect rr, rr2;
+            SkRect r = { 0, 0, 100, 100 };
+
+            rr.setRect(r);
+            rr.inset(-20, -20, &rr2);
+            path_contains_rrect_check(reporter, rr, dir, start);
+
+            rr.inset(20, 20, &rr2);
+            path_contains_rrect_check(reporter, rr, dir, start);
+
+            rr.inset(r.width()/2, r.height()/2, &rr2);
+            path_contains_rrect_check(reporter, rr, dir, start);
+
+            rr.setRectXY(r, 20, 20);
+            rr.inset(19, 19, &rr2);
+            path_contains_rrect_check(reporter, rr, dir, start);
+            rr.inset(20, 20, &rr2);
+            path_contains_rrect_check(reporter, rr, dir, start);
+        }
+    }
 }
 
 
@@ -193,152 +244,177 @@ static void test_9patch_rrect(skiatest::Reporter* reporter,
                               const SkRect& rect,
                               SkScalar l, SkScalar t, SkScalar r, SkScalar b,
                               bool checkRadii) {
-    SkRRect rr;
-    rr.setNinePatch(rect, l, t, r, b);
-    if (checkRadii) {
-        path_contains_rrect_check(reporter, rr);
-    } else {
-        path_contains_rrect_nocheck(reporter, rr);
-    }
-
-    SkRRect rr2; // construct the same RR using the most general set function
-    SkVector radii[4] = { { l, t }, { r, t }, { r, b }, { l, b } };
-    rr2.setRectRadii(rect, radii);
-    if (checkRadii) {
-        path_contains_rrect_check(reporter, rr);
-    } else {
-        path_contains_rrect_nocheck(reporter, rr);
+    for (auto dir : {SkPath::kCW_Direction, SkPath::kCCW_Direction}) {
+        for (int start = 0; start < 8; ++start) {
+            SkRRect rr;
+            rr.setNinePatch(rect, l, t, r, b);
+            if (checkRadii) {
+                path_contains_rrect_check(reporter, rr, dir, start);
+            } else {
+                path_contains_rrect_nocheck(reporter, rr, dir, start);
+            }
+
+            SkRRect rr2; // construct the same RR using the most general set function
+            SkVector radii[4] = { { l, t }, { r, t }, { r, b }, { l, b } };
+            rr2.setRectRadii(rect, radii);
+            if (checkRadii) {
+                path_contains_rrect_check(reporter, rr, dir, start);
+            } else {
+                path_contains_rrect_nocheck(reporter, rr, dir, start);
+            }
+        }
     }
 }
 
 // Test out the basic API entry points
 static void test_round_rect_basic(skiatest::Reporter* reporter) {
-
-    //----
-    SkRect rect = SkRect::MakeLTRB(0, 0, kWidth, kHeight);
-
-    SkRRect rr1;
-    rr1.setRect(rect);
-    path_contains_rrect_check(reporter, rr1);
-
-    SkRRect rr1_2; // construct the same RR using the most general set function
-    SkVector rr1_2_radii[4] = { { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 } };
-    rr1_2.setRectRadii(rect, rr1_2_radii);
-    path_contains_rrect_check(reporter, rr1_2);
-    SkRRect rr1_3;  // construct the same RR using the nine patch set function
-    rr1_3.setNinePatch(rect, 0, 0, 0, 0);
-    path_contains_rrect_check(reporter, rr1_2);
-
-    //----
-    SkPoint halfPoint = { SkScalarHalf(kWidth), SkScalarHalf(kHeight) };
-    SkRRect rr2;
-    rr2.setOval(rect);
-    path_contains_rrect_check(reporter, rr2);
-
-    SkRRect rr2_2;  // construct the same RR using the most general set function
-    SkVector rr2_2_radii[4] = { { halfPoint.fX, halfPoint.fY }, { halfPoint.fX, halfPoint.fY },
-                                { halfPoint.fX, halfPoint.fY }, { halfPoint.fX, halfPoint.fY } };
-    rr2_2.setRectRadii(rect, rr2_2_radii);
-    path_contains_rrect_check(reporter, rr2_2);
-    SkRRect rr2_3;  // construct the same RR using the nine patch set function
-    rr2_3.setNinePatch(rect, halfPoint.fX, halfPoint.fY, halfPoint.fX, halfPoint.fY);
-    path_contains_rrect_check(reporter, rr2_3);
-
-    //----
-    SkPoint p = { 5, 5 };
-    SkRRect rr3;
-    rr3.setRectXY(rect, p.fX, p.fY);
-    path_contains_rrect_check(reporter, rr3);
-
-    SkRRect rr3_2; // construct the same RR using the most general set function
-    SkVector rr3_2_radii[4] = { { 5, 5 }, { 5, 5 }, { 5, 5 }, { 5, 5 } };
-    rr3_2.setRectRadii(rect, rr3_2_radii);
-    path_contains_rrect_check(reporter, rr3_2);
-    SkRRect rr3_3;  // construct the same RR using the nine patch set function
-    rr3_3.setNinePatch(rect, 5, 5, 5, 5);
-    path_contains_rrect_check(reporter, rr3_3);
-
-    //----
-    test_9patch_rrect(reporter, rect, 10, 9, 8, 7, true);
-
-    {
-        // Test out the rrect from skia:3466
-        SkRect rect2 = SkRect::MakeLTRB(0.358211994f, 0.755430222f, 0.872866154f, 0.806214333f);
-
-        test_9patch_rrect(reporter,
-                          rect2,
-                          0.926942348f, 0.642850280f, 0.529063463f, 0.587844372f,
-                          false);
+    for (auto dir : {SkPath::kCW_Direction, SkPath::kCCW_Direction}) {
+        for (int start = 0; start < 8; ++start) {
+            //----
+            SkRect rect = SkRect::MakeLTRB(0, 0, kWidth, kHeight);
+
+            SkRRect rr1;
+            rr1.setRect(rect);
+            path_contains_rrect_check(reporter, rr1, dir, start);
+
+            SkRRect rr1_2; // construct the same RR using the most general set function
+            SkVector rr1_2_radii[4] = { { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 } };
+            rr1_2.setRectRadii(rect, rr1_2_radii);
+            path_contains_rrect_check(reporter, rr1_2, dir, start);
+            SkRRect rr1_3;  // construct the same RR using the nine patch set function
+            rr1_3.setNinePatch(rect, 0, 0, 0, 0);
+            path_contains_rrect_check(reporter, rr1_2, dir, start);
+
+            //----
+            SkPoint halfPoint = { SkScalarHalf(kWidth), SkScalarHalf(kHeight) };
+            SkRRect rr2;
+            rr2.setOval(rect);
+            path_contains_rrect_check(reporter, rr2, dir, start);
+
+            SkRRect rr2_2;  // construct the same RR using the most general set function
+            SkVector rr2_2_radii[4] = { { halfPoint.fX, halfPoint.fY },
+                                        { halfPoint.fX, halfPoint.fY },
+                                        { halfPoint.fX, halfPoint.fY },
+                                        { halfPoint.fX, halfPoint.fY } };
+            rr2_2.setRectRadii(rect, rr2_2_radii);
+            path_contains_rrect_check(reporter, rr2_2, dir, start);
+            SkRRect rr2_3;  // construct the same RR using the nine patch set function
+            rr2_3.setNinePatch(rect, halfPoint.fX, halfPoint.fY, halfPoint.fX, halfPoint.fY);
+            path_contains_rrect_check(reporter, rr2_3, dir, start);
+
+            //----
+            SkPoint p = { 5, 5 };
+            SkRRect rr3;
+            rr3.setRectXY(rect, p.fX, p.fY);
+            path_contains_rrect_check(reporter, rr3, dir, start);
+
+            SkRRect rr3_2; // construct the same RR using the most general set function
+            SkVector rr3_2_radii[4] = { { 5, 5 }, { 5, 5 }, { 5, 5 }, { 5, 5 } };
+            rr3_2.setRectRadii(rect, rr3_2_radii);
+            path_contains_rrect_check(reporter, rr3_2, dir, start);
+            SkRRect rr3_3;  // construct the same RR using the nine patch set function
+            rr3_3.setNinePatch(rect, 5, 5, 5, 5);
+            path_contains_rrect_check(reporter, rr3_3, dir, start);
+
+            //----
+            test_9patch_rrect(reporter, rect, 10, 9, 8, 7, true);
+
+            {
+                // Test out the rrect from skia:3466
+                SkRect rect2 = SkRect::MakeLTRB(0.358211994f, 0.755430222f, 0.872866154f,
+                                                0.806214333f);
+
+                test_9patch_rrect(reporter,
+                                  rect2,
+                                  0.926942348f, 0.642850280f, 0.529063463f, 0.587844372f,
+                                  false);
+            }
+
+            //----
+            SkPoint radii2[4] = { { 0, 0 }, { 0, 0 }, { 50, 50 }, { 20, 50 } };
+
+            SkRRect rr5;
+            rr5.setRectRadii(rect, radii2);
+            path_contains_rrect_check(reporter, rr5, dir, start);
+        }
     }
-
-    //----
-    SkPoint radii2[4] = { { 0, 0 }, { 0, 0 }, { 50, 50 }, { 20, 50 } };
-
-    SkRRect rr5;
-    rr5.setRectRadii(rect, radii2);
-    path_contains_rrect_check(reporter, rr5);
 }
 
 // Test out the cases when the RR degenerates to a rect
 static void test_round_rect_rects(skiatest::Reporter* reporter) {
+    for (auto dir : {SkPath::kCW_Direction, SkPath::kCCW_Direction}) {
+        for (int start = 0; start < 8; ++start) {
+            //----
+            SkRect rect = SkRect::MakeLTRB(0, 0, kWidth, kHeight);
+            SkRRect rr1;
+            rr1.setRectXY(rect, 0, 0);
 
-    //----
-    SkRect rect = SkRect::MakeLTRB(0, 0, kWidth, kHeight);
-    SkRRect rr1;
-    rr1.setRectXY(rect, 0, 0);
+            path_contains_rrect_check(reporter, rr1, dir, start);
 
-    path_contains_rrect_check(reporter, rr1);
+            //----
+            SkPoint radii[4] = { { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 } };
 
-    //----
-    SkPoint radii[4] = { { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 } };
+            SkRRect rr2;
+            rr2.setRectRadii(rect, radii);
 
-    SkRRect rr2;
-    rr2.setRectRadii(rect, radii);
+            path_contains_rrect_check(reporter, rr2, dir, start);
 
-    path_contains_rrect_check(reporter, rr2);
+            //----
+            SkPoint radii2[4] = { { 0, 0 }, { 20, 20 }, { 50, 50 }, { 20, 50 } };
 
-    //----
-    SkPoint radii2[4] = { { 0, 0 }, { 20, 20 }, { 50, 50 }, { 20, 50 } };
-
-    SkRRect rr3;
-    rr3.setRectRadii(rect, radii2);
-    path_contains_rrect_check(reporter, rr3);
+            SkRRect rr3;
+            rr3.setRectRadii(rect, radii2);
+            path_contains_rrect_check(reporter, rr3, dir, start);
+        }
+    }
 }
 
 // Test out the cases when the RR degenerates to an oval
 static void test_round_rect_ovals(skiatest::Reporter* reporter) {
-    //----
-    SkRect rect = SkRect::MakeLTRB(0, 0, kWidth, kHeight);
-    SkRRect rr1;
-    rr1.setRectXY(rect, SkScalarHalf(kWidth), SkScalarHalf(kHeight));
-
-    path_contains_rrect_check(reporter, rr1);
+    for (auto dir : {SkPath::kCW_Direction, SkPath::kCCW_Direction}) {
+        for (int start = 0; start < 8; ++start) {
+            //----
+            SkRect rect = SkRect::MakeLTRB(0, 0, kWidth, kHeight);
+            SkRRect rr1;
+            rr1.setRectXY(rect, SkScalarHalf(kWidth), SkScalarHalf(kHeight));
+
+            path_contains_rrect_check(reporter, rr1, dir, start);
+        }
+    }
 }
 
 // Test out the non-degenerate RR cases
 static void test_round_rect_general(skiatest::Reporter* reporter) {
-    //----
-    SkRect rect = SkRect::MakeLTRB(0, 0, kWidth, kHeight);
-    SkRRect rr1;
-    rr1.setRectXY(rect, 20, 20);
+    for (auto dir : {SkPath::kCW_Direction, SkPath::kCCW_Direction}) {
+        for (int start = 0; start < 8; ++start) {
+            //----
+            SkRect rect = SkRect::MakeLTRB(0, 0, kWidth, kHeight);
+            SkRRect rr1;
+            rr1.setRectXY(rect, 20, 20);
 
-    path_contains_rrect_check(reporter, rr1);
+            path_contains_rrect_check(reporter, rr1, dir, start);
 
-    //----
-    SkPoint radii[4] = { { 0, 0 }, { 20, 20 }, { 50, 50 }, { 20, 50 } };
+            //----
+            SkPoint radii[4] = { { 0, 0 }, { 20, 20 }, { 50, 50 }, { 20, 50 } };
 
-    SkRRect rr2;
-    rr2.setRectRadii(rect, radii);
+            SkRRect rr2;
+            rr2.setRectRadii(rect, radii);
 
-    path_contains_rrect_check(reporter, rr2);
+            path_contains_rrect_check(reporter, rr2, dir, start);
+        }
+    }
 }
 
 static void test_round_rect_iffy_parameters(skiatest::Reporter* reporter) {
-    SkRect rect = SkRect::MakeLTRB(0, 0, kWidth, kHeight);
-    SkPoint radii[4] = { { 50, 100 }, { 100, 50 }, { 50, 100 }, { 100, 50 } };
-    SkRRect rr1;
-    rr1.setRectRadii(rect, radii);
-    path_contains_rrect_nocheck(reporter, rr1);
+    for (auto dir : {SkPath::kCW_Direction, SkPath::kCCW_Direction}) {
+        for (int start = 0; start < 8; ++start) {
+            SkRect rect = SkRect::MakeLTRB(0, 0, kWidth, kHeight);
+            SkPoint radii[4] = { { 50, 100 }, { 100, 50 }, { 50, 100 }, { 100, 50 } };
+            SkRRect rr1;
+            rr1.setRectRadii(rect, radii);
+            path_contains_rrect_nocheck(reporter, rr1, dir, start);
+        }
+    }
 }
 
 static void set_radii(SkVector radii[4], int index, float rad) {
@@ -356,21 +432,29 @@ static void test_skbug_3239(skiatest::Reporter* reporter) {
     const SkRect rectx = SkRect::MakeLTRB(min, min, max, big);
     const SkRect recty = SkRect::MakeLTRB(min, min, big, max);
 
-    SkVector radii[4];
-    for (int i = 0; i < 4; ++i) {
-        set_radii(radii, i, rad);
-        path_contains_rrect_check(reporter, rectx, radii);
-        path_contains_rrect_check(reporter, recty, radii);
+    for (auto dir : {SkPath::kCW_Direction, SkPath::kCCW_Direction}) {
+        for (int start = 0; start < 8; ++start) {
+            SkVector radii[4];
+            for (int i = 0; i < 4; ++i) {
+                set_radii(radii, i, rad);
+                path_contains_rrect_check(reporter, rectx, radii, dir, start);
+                path_contains_rrect_check(reporter, recty, radii, dir, start);
+            }
+        }
     }
 }
 
 static void test_mix(skiatest::Reporter* reporter) {
-    // Test out mixed degenerate and non-degenerate geometry with Conics
-    const SkVector radii[4] = { { 0, 0 }, { 0, 0 }, { 0, 0 }, { 100, 100 } };
-    SkRect r = SkRect::MakeWH(100, 100);
-    SkRRect rr;
-    rr.setRectRadii(r, radii);
-    path_contains_rrect_check(reporter, rr);
+    for (auto dir : {SkPath::kCW_Direction, SkPath::kCCW_Direction}) {
+        for (int start = 0; start < 8; ++start) {
+            // Test out mixed degenerate and non-degenerate geometry with Conics
+            const SkVector radii[4] = { { 0, 0 }, { 0, 0 }, { 0, 0 }, { 100, 100 } };
+            SkRect r = SkRect::MakeWH(100, 100);
+            SkRRect rr;
+            rr.setRectRadii(r, radii);
+            path_contains_rrect_check(reporter, rr, dir, start);
+        }
+    }
 }
 
 DEF_TEST(RoundRectInPath, reporter) {