Add base types for path ops

tests/PathOpsDPointTest.cpp

Index: tests/PathOpsDPointTest.cpp
===================================================================
--- tests/PathOpsDPointTest.cpp	(revision 0)
+++ tests/PathOpsDPointTest.cpp	(revision 0)
@@ -0,0 +1,51 @@
+/*
+ * 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 "SkPathOpsPoint.h"
+#include "Test.h"
+
+const SkDPoint tests[] = {
+    {0, 0},
+    {1, 0},
+    {0, 1},
+    {2, 1},
+    {1, 2},
+    {1, 1},
+    {2, 2}
+};
+
+const size_t tests_count = sizeof(tests) / sizeof(tests[0]);
+static size_t firstDPointTest = 0;
+
+void DPointTest(skiatest::Reporter* reporter) {
+    for (size_t index = firstDPointTest; index < tests_count; ++index) {
+        const SkDPoint& pt = tests[index];
+        SkDPoint p = pt;
+        REPORTER_ASSERT(reporter, p == pt);
+        REPORTER_ASSERT(reporter, !(pt != pt));
+        SkDVector v = p - pt;
+        p += v;
+        REPORTER_ASSERT(reporter, p == pt);
+        p -= v;
+        REPORTER_ASSERT(reporter, p == pt);
+        REPORTER_ASSERT(reporter, p.approximatelyEqual(pt));
+        SkPoint sPt = pt.asSkPoint();
+        p.set(sPt);
+        REPORTER_ASSERT(reporter, p == pt);
+        REPORTER_ASSERT(reporter, p.approximatelyEqual(sPt));
+        REPORTER_ASSERT(reporter, p.roughlyEqual(pt));
+        REPORTER_ASSERT(reporter, p.moreRoughlyEqual(pt));
+        p.fX = p.fY = 0;
+        REPORTER_ASSERT(reporter, p.fX == 0 && p.fY == 0);
+        REPORTER_ASSERT(reporter, p.approximatelyZero());
+        REPORTER_ASSERT(reporter, pt.distanceSquared(p) == pt.fX * pt.fX + pt.fY * pt.fY);
+        REPORTER_ASSERT(reporter, approximately_equal(pt.distance(p),
+                sqrt(pt.fX * pt.fX + pt.fY * pt.fY)));
+    }
+}
+
+#include "TestClassDef.h"
+DEFINE_TESTCLASS("PathOpsDPoint", PathOpsDPointClass, DPointTest)