ui/gfx/geometry/box_unittest.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/basictypes.h"
   6 #include "testing/gtest/include/gtest/gtest.h"
   7 #include "ui/gfx/geometry/box_f.h"
   8
   9 namespace gfx {
  10
  11 TEST(BoxTest, Constructors) {
  12   EXPECT_EQ(BoxF(0.f, 0.f, 0.f, 0.f, 0.f, 0.f).ToString(),
  13             BoxF().ToString());
  14   EXPECT_EQ(BoxF(0.f, 0.f, 0.f, -3.f, -5.f, -7.f).ToString(),
  15             BoxF().ToString());
  16
  17   EXPECT_EQ(BoxF(0.f, 0.f, 0.f, 3.f, 5.f, 7.f).ToString(),
  18             BoxF(3.f, 5.f, 7.f).ToString());
  19   EXPECT_EQ(BoxF(0.f, 0.f, 0.f, 0.f, 0.f, 0.f).ToString(),
  20             BoxF(-3.f, -5.f, -7.f).ToString());
  21
  22   EXPECT_EQ(BoxF(2.f, 4.f, 6.f, 3.f, 5.f, 7.f).ToString(),
  23             BoxF(Point3F(2.f, 4.f, 6.f), 3.f, 5.f, 7.f).ToString());
  24   EXPECT_EQ(BoxF(2.f, 4.f, 6.f, 0.f, 0.f, 0.f).ToString(),
  25             BoxF(Point3F(2.f, 4.f, 6.f), -3.f, -5.f, -7.f).ToString());
  26 }
  27
  28 TEST(BoxTest, IsEmpty) {
  29   EXPECT_TRUE(BoxF(0.f, 0.f, 0.f, 0.f, 0.f, 0.f).IsEmpty());
  30   EXPECT_TRUE(BoxF(1.f, 2.f, 3.f, 0.f, 0.f, 0.f).IsEmpty());
  31
  32   EXPECT_TRUE(BoxF(0.f, 0.f, 0.f, 2.f, 0.f, 0.f).IsEmpty());
  33   EXPECT_TRUE(BoxF(1.f, 2.f, 3.f, 2.f, 0.f, 0.f).IsEmpty());
  34   EXPECT_TRUE(BoxF(0.f, 0.f, 0.f, 0.f, 2.f, 0.f).IsEmpty());
  35   EXPECT_TRUE(BoxF(1.f, 2.f, 3.f, 0.f, 2.f, 0.f).IsEmpty());
  36   EXPECT_TRUE(BoxF(0.f, 0.f, 0.f, 0.f, 0.f, 2.f).IsEmpty());
  37   EXPECT_TRUE(BoxF(1.f, 2.f, 3.f, 0.f, 0.f, 2.f).IsEmpty());
  38
  39   EXPECT_FALSE(BoxF(0.f, 0.f, 0.f, 0.f, 2.f, 2.f).IsEmpty());
  40   EXPECT_FALSE(BoxF(1.f, 2.f, 3.f, 0.f, 2.f, 2.f).IsEmpty());
  41   EXPECT_FALSE(BoxF(0.f, 0.f, 0.f, 2.f, 0.f, 2.f).IsEmpty());
  42   EXPECT_FALSE(BoxF(1.f, 2.f, 3.f, 2.f, 0.f, 2.f).IsEmpty());
  43   EXPECT_FALSE(BoxF(0.f, 0.f, 0.f, 2.f, 2.f, 0.f).IsEmpty());
  44   EXPECT_FALSE(BoxF(1.f, 2.f, 3.f, 2.f, 2.f, 0.f).IsEmpty());
  45
  46   EXPECT_FALSE(BoxF(0.f, 0.f, 0.f, 2.f, 2.f, 2.f).IsEmpty());
  47   EXPECT_FALSE(BoxF(1.f, 2.f, 3.f, 2.f, 2.f, 2.f).IsEmpty());
  48 }
  49
  50 TEST(BoxTest, Union) {
  51   BoxF empty_box;
  52   BoxF box1(0.f, 0.f, 0.f, 1.f, 1.f, 1.f);
  53   BoxF box2(0.f, 0.f, 0.f, 4.f, 6.f, 8.f);
  54   BoxF box3(3.f, 4.f, 5.f, 6.f, 4.f, 0.f);
  55
  56   EXPECT_EQ(empty_box.ToString(), UnionBoxes(empty_box, empty_box).ToString());
  57   EXPECT_EQ(box1.ToString(), UnionBoxes(empty_box, box1).ToString());
  58   EXPECT_EQ(box1.ToString(), UnionBoxes(box1, empty_box).ToString());
  59   EXPECT_EQ(box2.ToString(), UnionBoxes(empty_box, box2).ToString());
  60   EXPECT_EQ(box2.ToString(), UnionBoxes(box2, empty_box).ToString());
  61   EXPECT_EQ(box3.ToString(), UnionBoxes(empty_box, box3).ToString());
  62   EXPECT_EQ(box3.ToString(), UnionBoxes(box3, empty_box).ToString());
  63
  64   // box_1 is contained in box_2
  65   EXPECT_EQ(box2.ToString(), UnionBoxes(box1, box2).ToString());
  66   EXPECT_EQ(box2.ToString(), UnionBoxes(box2, box1).ToString());
  67
  68   // box_1 and box_3 are disjoint
  69   EXPECT_EQ(BoxF(0.f, 0.f, 0.f, 9.f, 8.f, 5.f).ToString(),
  70             UnionBoxes(box1, box3).ToString());
  71   EXPECT_EQ(BoxF(0.f, 0.f, 0.f, 9.f, 8.f, 5.f).ToString(),
  72             UnionBoxes(box3, box1).ToString());
  73
  74   // box_2 and box_3 intersect, but neither contains the other
  75   EXPECT_EQ(BoxF(0.f, 0.f, 0.f, 9.f, 8.f, 8.f).ToString(),
  76             UnionBoxes(box2, box3).ToString());
  77   EXPECT_EQ(BoxF(0.f, 0.f, 0.f, 9.f, 8.f, 8.f).ToString(),
  78             UnionBoxes(box3, box2).ToString());
  79 }
  80
  81 TEST(BoxTest, ExpandTo) {
  82   BoxF box1;
  83   BoxF box2(0.f, 0.f, 0.f, 1.f, 1.f, 1.f);
  84   BoxF box3(1.f, 1.f, 1.f, 0.f, 0.f, 0.f);
  85
  86   Point3F point1(0.5f, 0.5f, 0.5f);
  87   Point3F point2(-0.5f, -0.5f, -0.5f);
  88
  89   BoxF expected1_1(0.f, 0.f, 0.f, 0.5f, 0.5f, 0.5f);
  90   BoxF expected1_2(-0.5f, -0.5f, -0.5f, 1.f, 1.f, 1.f);
  91
  92   BoxF expected2_1 = box2;
  93   BoxF expected2_2(-0.5f, -0.5f, -0.5f, 1.5f, 1.5f, 1.5f);
  94
  95   BoxF expected3_1(0.5f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5f);
  96   BoxF expected3_2(-0.5f, -0.5f, -0.5f, 1.5f, 1.5f, 1.5f);
  97
  98   box1.ExpandTo(point1);
  99   EXPECT_EQ(expected1_1.ToString(), box1.ToString());
 100   box1.ExpandTo(point2);
 101   EXPECT_EQ(expected1_2.ToString(), box1.ToString());
 102
 103   box2.ExpandTo(point1);
 104   EXPECT_EQ(expected2_1.ToString(), box2.ToString());
 105   box2.ExpandTo(point2);
 106   EXPECT_EQ(expected2_2.ToString(), box2.ToString());
 107
 108   box3.ExpandTo(point1);
 109   EXPECT_EQ(expected3_1.ToString(), box3.ToString());
 110   box3.ExpandTo(point2);
 111   EXPECT_EQ(expected3_2.ToString(), box3.ToString());
 112 }
 113
 114 TEST(BoxTest, Scale) {
 115   BoxF box1(2.f, 3.f, 4.f, 5.f, 6.f, 7.f);
 116
 117   EXPECT_EQ(BoxF().ToString(), ScaleBox(box1, 0.f).ToString());
 118   EXPECT_EQ(box1.ToString(), ScaleBox(box1, 1.f).ToString());
 119   EXPECT_EQ(BoxF(4.f, 12.f, 24.f, 10.f, 24.f, 42.f).ToString(),
 120             ScaleBox(box1, 2.f, 4.f, 6.f).ToString());
 121
 122   BoxF box2 = box1;
 123   box2.Scale(0.f);
 124   EXPECT_EQ(BoxF().ToString(), box2.ToString());
 125
 126   box2 = box1;
 127   box2.Scale(1.f);
 128   EXPECT_EQ(box1.ToString(), box2.ToString());
 129
 130   box2.Scale(2.f, 4.f, 6.f);
 131   EXPECT_EQ(BoxF(4.f, 12.f, 24.f, 10.f, 24.f, 42.f).ToString(),
 132             box2.ToString());
 133 }
 134
 135 TEST(BoxTest, Equals) {
 136   EXPECT_TRUE(BoxF() == BoxF());
 137   EXPECT_TRUE(BoxF(2.f, 3.f, 4.f, 6.f, 8.f, 10.f) ==
 138               BoxF(2.f, 3.f, 4.f, 6.f, 8.f, 10.f));
 139   EXPECT_FALSE(BoxF() == BoxF(0.f, 0.f, 0.f, 0.f, 0.f, 1.f));
 140   EXPECT_FALSE(BoxF() == BoxF(0.f, 0.f, 0.f, 0.f, 1.f, 0.f));
 141   EXPECT_FALSE(BoxF() == BoxF(0.f, 0.f, 0.f, 1.f, 0.f, 0.f));
 142   EXPECT_FALSE(BoxF() == BoxF(0.f, 0.f, 1.f, 0.f, 0.f, 0.f));
 143   EXPECT_FALSE(BoxF() == BoxF(0.f, 1.f, 0.f, 0.f, 0.f, 0.f));
 144   EXPECT_FALSE(BoxF() == BoxF(1.f, 0.f, 0.f, 0.f, 0.f, 0.f));
 145 }
 146
 147 TEST(BoxTest, NotEquals) {
 148   EXPECT_FALSE(BoxF() != BoxF());
 149   EXPECT_FALSE(BoxF(2.f, 3.f, 4.f, 6.f, 8.f, 10.f) !=
 150                BoxF(2.f, 3.f, 4.f, 6.f, 8.f, 10.f));
 151   EXPECT_TRUE(BoxF() != BoxF(0.f, 0.f, 0.f, 0.f, 0.f, 1.f));
 152   EXPECT_TRUE(BoxF() != BoxF(0.f, 0.f, 0.f, 0.f, 1.f, 0.f));
 153   EXPECT_TRUE(BoxF() != BoxF(0.f, 0.f, 0.f, 1.f, 0.f, 0.f));
 154   EXPECT_TRUE(BoxF() != BoxF(0.f, 0.f, 1.f, 0.f, 0.f, 0.f));
 155   EXPECT_TRUE(BoxF() != BoxF(0.f, 1.f, 0.f, 0.f, 0.f, 0.f));
 156   EXPECT_TRUE(BoxF() != BoxF(1.f, 0.f, 0.f, 0.f, 0.f, 0.f));
 157 }
 158
 159
 160 TEST(BoxTest, Offset) {
 161   BoxF box1(2.f, 3.f, 4.f, 5.f, 6.f, 7.f);
 162
 163   EXPECT_EQ(box1.ToString(), (box1 + Vector3dF(0.f, 0.f, 0.f)).ToString());
 164   EXPECT_EQ(BoxF(3.f, 1.f, 0.f, 5.f, 6.f, 7.f).ToString(),
 165             (box1 + Vector3dF(1.f, -2.f, -4.f)).ToString());
 166
 167   BoxF box2 = box1;
 168   box2 += Vector3dF(0.f, 0.f, 0.f);
 169   EXPECT_EQ(box1.ToString(), box2.ToString());
 170
 171   box2 += Vector3dF(1.f, -2.f, -4.f);
 172   EXPECT_EQ(BoxF(3.f, 1.f, 0.f, 5.f, 6.f, 7.f).ToString(),
 173             box2.ToString());
 174 }
 175
 176 }  // namespace gfx