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      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/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
    177