new files for pathops geometric intersection

tests/PathOpsBuilderTest.cpp

+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#include "PathOpsTestCommon.h"
+#include "Test.h"
+
+DEF_TEST(PathOpsBuilder, reporter) {
+    SkOpBuilder builder;
+    SkPath result;
+    REPORTER_ASSERT(reporter, builder.resolve(&result));
+    REPORTER_ASSERT(reporter, result.isEmpty());
+
+    builder.add(result, kDifference_PathOp);
+    REPORTER_ASSERT(reporter, builder.resolve(&result));
+    REPORTER_ASSERT(reporter, result.isEmpty());
+
+    builder.add(result, kUnion_PathOp);
+    REPORTER_ASSERT(reporter, builder.resolve(&result));
+    REPORTER_ASSERT(reporter, result.isEmpty());
+
+    SkPath rectPath;
+    rectPath.addRect(0, 1, 2, 3, SkPath::kCW_Direction);
+    builder.add(rectPath, kUnion_PathOp);
+    REPORTER_ASSERT(reporter, builder.resolve(&result));
+    bool closed;
+    SkPath::Direction dir;
+    REPORTER_ASSERT(reporter, result.isRect(NULL, &closed, &dir));
+    REPORTER_ASSERT(reporter, closed);
+    REPORTER_ASSERT(reporter, dir == SkPath::kCW_Direction);
+    REPORTER_ASSERT(reporter, rectPath == result);
+
+    rectPath.reset();
+    rectPath.addRect(0, 1, 2, 3, SkPath::kCCW_Direction);
+    builder.add(rectPath, kUnion_PathOp);
+    REPORTER_ASSERT(reporter, builder.resolve(&result));
+    REPORTER_ASSERT(reporter, result.isRect(NULL, &closed, &dir));
+    REPORTER_ASSERT(reporter, closed);
+    REPORTER_ASSERT(reporter, dir == SkPath::kCCW_Direction);
+    REPORTER_ASSERT(reporter, rectPath == result);
+
+    builder.add(rectPath, kDifference_PathOp);
+    REPORTER_ASSERT(reporter, builder.resolve(&result));
+    REPORTER_ASSERT(reporter, result.isEmpty());
+
+    SkPath rect2, rect3;
+    rect2.addRect(2, 1, 4, 3, SkPath::kCW_Direction);
+    rect3.addRect(4, 1, 5, 3, SkPath::kCCW_Direction);
+    builder.add(rectPath, kUnion_PathOp);
+    builder.add(rect2, kUnion_PathOp);
+    builder.add(rect3, kUnion_PathOp);
+    REPORTER_ASSERT(reporter, builder.resolve(&result));
+    REPORTER_ASSERT(reporter, result.isRect(NULL, &closed, &dir));
+    REPORTER_ASSERT(reporter, closed);
+    SkRect expected;
+    expected.set(0, 1, 5, 3);
+    REPORTER_ASSERT(reporter, result.getBounds() == expected);
+
+    SkPath circle1, circle2, circle3;
+    circle1.addCircle(5, 6, 4, SkPath::kCW_Direction);
+    circle2.addCircle(7, 4, 8, SkPath::kCCW_Direction);
+    circle3.addCircle(6, 5, 6, SkPath::kCW_Direction);
+    SkPath opCompare;
+    Op(circle1, circle2, kUnion_PathOp, &opCompare);
+    Op(opCompare, circle3, kDifference_PathOp, &opCompare);
+    builder.add(circle1, kUnion_PathOp);
+    builder.add(circle2, kUnion_PathOp);
+    builder.add(circle3, kDifference_PathOp);
+    REPORTER_ASSERT(reporter, builder.resolve(&result));
+    REPORTER_ASSERT(reporter, opCompare == result);
+}