1/*
2 * Copyright 2012 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7#include "PathOpsTestCommon.h"
8#include "SkPathOpsPoint.h"
9#include "Test.h"
10
11static const SkDPoint tests[] = {
12    {0, 0},
13    {1, 0},
14    {0, 1},
15    {2, 1},
16    {1, 2},
17    {1, 1},
18    {2, 2}
19};
20
21static const size_t tests_count = SK_ARRAY_COUNT(tests);
22
23DEF_TEST(PathOpsDVector, reporter) {
24    for (size_t index = 0; index < tests_count - 1; ++index) {
25        SkDVector v1 = tests[index + 1] - tests[index];
26        SkASSERT(ValidVector(v1));
27        SkDVector v2 = tests[index] - tests[index + 1];
28        SkASSERT(ValidVector(v2));
29        v1 += v2;
30        REPORTER_ASSERT(reporter, v1.fX == 0 && v1.fY == 0);
31        SkDPoint p = tests[index + 1] + v2;
32        REPORTER_ASSERT(reporter, p == tests[index]);
33        v2 -= v2;
34        REPORTER_ASSERT(reporter, v2.fX == 0 && v2.fY == 0);
35        v1 = tests[index + 1] - tests[index];
36        v1 /= 2;
37        v1 *= 2;
38        v1 -= tests[index + 1] - tests[index];
39        REPORTER_ASSERT(reporter, v1.fX == 0 && v1.fY == 0);
40        SkVector sv = v1.asSkVector();
41        REPORTER_ASSERT(reporter, sv.fX == 0 && sv.fY == 0);
42        v1 = tests[index + 1] - tests[index];
43        double lenSq = v1.lengthSquared();
44        double v1Dot = v1.dot(v1);
45        REPORTER_ASSERT(reporter, lenSq == v1Dot);
46        REPORTER_ASSERT(reporter, approximately_equal(sqrt(lenSq), v1.length()));
47        double v1Cross = v1.cross(v1);
48        REPORTER_ASSERT(reporter, v1Cross == 0);
49    }
50}
51