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-rw-r--r--ui/gfx/geometry/vector3d_unittest.cc347
1 files changed, 347 insertions, 0 deletions
diff --git a/ui/gfx/geometry/vector3d_unittest.cc b/ui/gfx/geometry/vector3d_unittest.cc
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+++ b/ui/gfx/geometry/vector3d_unittest.cc
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+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <stddef.h>
+
+#include <cmath>
+#include <limits>
+
+#include "base/macros.h"
+#include "build/build_config.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/gfx/geometry/vector3d_f.h"
+
+namespace gfx {
+
+TEST(Vector3dTest, IsZero) {
+ gfx::Vector3dF float_zero(0, 0, 0);
+ gfx::Vector3dF float_nonzero(0.1f, -0.1f, 0.1f);
+
+ EXPECT_TRUE(float_zero.IsZero());
+ EXPECT_FALSE(float_nonzero.IsZero());
+}
+
+TEST(Vector3dTest, Add) {
+ gfx::Vector3dF f1(3.1f, 5.1f, 2.7f);
+ gfx::Vector3dF f2(4.3f, -1.3f, 8.1f);
+
+ const struct {
+ gfx::Vector3dF expected;
+ gfx::Vector3dF actual;
+ } float_tests[] = {
+ { gfx::Vector3dF(3.1F, 5.1F, 2.7f), f1 + gfx::Vector3dF() },
+ { gfx::Vector3dF(3.1f + 4.3f, 5.1f - 1.3f, 2.7f + 8.1f), f1 + f2 },
+ { gfx::Vector3dF(3.1f - 4.3f, 5.1f + 1.3f, 2.7f - 8.1f), f1 - f2 }
+ };
+
+ for (size_t i = 0; i < arraysize(float_tests); ++i)
+ EXPECT_EQ(float_tests[i].expected.ToString(),
+ float_tests[i].actual.ToString());
+}
+
+TEST(Vector3dTest, Negative) {
+ const struct {
+ gfx::Vector3dF expected;
+ gfx::Vector3dF actual;
+ } float_tests[] = {
+ { gfx::Vector3dF(-0.0f, -0.0f, -0.0f), -gfx::Vector3dF(0, 0, 0) },
+ { gfx::Vector3dF(-0.3f, -0.3f, -0.3f), -gfx::Vector3dF(0.3f, 0.3f, 0.3f) },
+ { gfx::Vector3dF(0.3f, 0.3f, 0.3f), -gfx::Vector3dF(-0.3f, -0.3f, -0.3f) },
+ { gfx::Vector3dF(-0.3f, 0.3f, -0.3f), -gfx::Vector3dF(0.3f, -0.3f, 0.3f) },
+ { gfx::Vector3dF(0.3f, -0.3f, -0.3f), -gfx::Vector3dF(-0.3f, 0.3f, 0.3f) },
+ { gfx::Vector3dF(-0.3f, -0.3f, 0.3f), -gfx::Vector3dF(0.3f, 0.3f, -0.3f) }
+ };
+
+ for (size_t i = 0; i < arraysize(float_tests); ++i)
+ EXPECT_EQ(float_tests[i].expected.ToString(),
+ float_tests[i].actual.ToString());
+}
+
+TEST(Vector3dTest, Scale) {
+ float triple_values[][6] = {
+ { 4.5f, 1.2f, 1.8f, 3.3f, 5.6f, 4.2f },
+ { 4.5f, -1.2f, -1.8f, 3.3f, 5.6f, 4.2f },
+ { 4.5f, 1.2f, -1.8f, 3.3f, 5.6f, 4.2f },
+ { 4.5f, -1.2f -1.8f, 3.3f, 5.6f, 4.2f },
+
+ { 4.5f, 1.2f, 1.8f, 3.3f, -5.6f, -4.2f },
+ { 4.5f, 1.2f, 1.8f, -3.3f, -5.6f, -4.2f },
+ { 4.5f, 1.2f, -1.8f, 3.3f, -5.6f, -4.2f },
+ { 4.5f, 1.2f, -1.8f, -3.3f, -5.6f, -4.2f },
+
+ { -4.5f, 1.2f, 1.8f, 3.3f, 5.6f, 4.2f },
+ { -4.5f, 1.2f, 1.8f, 0, 5.6f, 4.2f },
+ { -4.5f, 1.2f, -1.8f, 3.3f, 5.6f, 4.2f },
+ { -4.5f, 1.2f, -1.8f, 0, 5.6f, 4.2f },
+
+ { -4.5f, 1.2f, 1.8f, 3.3f, 0, 4.2f },
+ { 4.5f, 0, 1.8f, 3.3f, 5.6f, 4.2f },
+ { -4.5f, 1.2f, -1.8f, 3.3f, 0, 4.2f },
+ { 4.5f, 0, -1.8f, 3.3f, 5.6f, 4.2f },
+ { -4.5f, 1.2f, 1.8f, 3.3f, 5.6f, 0 },
+ { -4.5f, 1.2f, -1.8f, 3.3f, 5.6f, 0 },
+
+ { 0, 1.2f, 0, 3.3f, 5.6f, 4.2f },
+ { 0, 1.2f, 1.8f, 3.3f, 5.6f, 4.2f }
+ };
+
+ for (size_t i = 0; i < arraysize(triple_values); ++i) {
+ gfx::Vector3dF v(triple_values[i][0],
+ triple_values[i][1],
+ triple_values[i][2]);
+ v.Scale(triple_values[i][3], triple_values[i][4], triple_values[i][5]);
+ EXPECT_EQ(triple_values[i][0] * triple_values[i][3], v.x());
+ EXPECT_EQ(triple_values[i][1] * triple_values[i][4], v.y());
+ EXPECT_EQ(triple_values[i][2] * triple_values[i][5], v.z());
+
+ Vector3dF v2 = ScaleVector3d(
+ gfx::Vector3dF(triple_values[i][0],
+ triple_values[i][1],
+ triple_values[i][2]),
+ triple_values[i][3], triple_values[i][4], triple_values[i][5]);
+ EXPECT_EQ(triple_values[i][0] * triple_values[i][3], v2.x());
+ EXPECT_EQ(triple_values[i][1] * triple_values[i][4], v2.y());
+ EXPECT_EQ(triple_values[i][2] * triple_values[i][5], v2.z());
+ }
+
+ float single_values[][4] = {
+ { 4.5f, 1.2f, 1.8f, 3.3f },
+ { 4.5f, -1.2f, 1.8f, 3.3f },
+ { 4.5f, 1.2f, -1.8f, 3.3f },
+ { 4.5f, -1.2f, -1.8f, 3.3f },
+ { -4.5f, 1.2f, 3.3f },
+ { -4.5f, 1.2f, 0 },
+ { -4.5f, 1.2f, 1.8f, 3.3f },
+ { -4.5f, 1.2f, 1.8f, 0 },
+ { 4.5f, 0, 1.8f, 3.3f },
+ { 0, 1.2f, 1.8f, 3.3f },
+ { 4.5f, 0, 1.8f, 3.3f },
+ { 0, 1.2f, 1.8f, 3.3f },
+ { 4.5f, 1.2f, 0, 3.3f },
+ { 4.5f, 1.2f, 0, 3.3f }
+ };
+
+ for (size_t i = 0; i < arraysize(single_values); ++i) {
+ gfx::Vector3dF v(single_values[i][0],
+ single_values[i][1],
+ single_values[i][2]);
+ v.Scale(single_values[i][3]);
+ EXPECT_EQ(single_values[i][0] * single_values[i][3], v.x());
+ EXPECT_EQ(single_values[i][1] * single_values[i][3], v.y());
+ EXPECT_EQ(single_values[i][2] * single_values[i][3], v.z());
+
+ Vector3dF v2 = ScaleVector3d(
+ gfx::Vector3dF(single_values[i][0],
+ single_values[i][1],
+ single_values[i][2]),
+ single_values[i][3]);
+ EXPECT_EQ(single_values[i][0] * single_values[i][3], v2.x());
+ EXPECT_EQ(single_values[i][1] * single_values[i][3], v2.y());
+ EXPECT_EQ(single_values[i][2] * single_values[i][3], v2.z());
+ }
+}
+
+TEST(Vector3dTest, Length) {
+ float float_values[][3] = {
+ { 0, 0, 0 },
+ { 10.5f, 20.5f, 8.5f },
+ { 20.5f, 10.5f, 8.5f },
+ { 8.5f, 20.5f, 10.5f },
+ { 10.5f, 8.5f, 20.5f },
+ { -10.5f, -20.5f, -8.5f },
+ { -20.5f, 10.5f, -8.5f },
+ { -8.5f, -20.5f, -10.5f },
+ { -10.5f, -8.5f, -20.5f },
+ { 10.5f, -20.5f, 8.5f },
+ { -10.5f, 20.5f, 8.5f },
+ { 10.5f, -20.5f, -8.5f },
+ { -10.5f, 20.5f, -8.5f },
+ // A large vector that fails if the Length function doesn't use
+ // double precision internally.
+ { 1236278317862780234892374893213178027.12122348904204230f,
+ 335890352589839028212313231225425134332.38123f,
+ 27861786423846742743236423478236784678.236713617231f }
+ };
+
+ for (size_t i = 0; i < arraysize(float_values); ++i) {
+ double v0 = float_values[i][0];
+ double v1 = float_values[i][1];
+ double v2 = float_values[i][2];
+ double length_squared =
+ static_cast<double>(v0) * v0 +
+ static_cast<double>(v1) * v1 +
+ static_cast<double>(v2) * v2;
+ double length = std::sqrt(length_squared);
+ gfx::Vector3dF vector(v0, v1, v2);
+ EXPECT_DOUBLE_EQ(length_squared, vector.LengthSquared());
+ EXPECT_FLOAT_EQ(static_cast<float>(length), vector.Length());
+ }
+}
+
+TEST(Vector3dTest, DotProduct) {
+ const struct {
+ float expected;
+ gfx::Vector3dF input1;
+ gfx::Vector3dF input2;
+ } tests[] = {
+ { 0, gfx::Vector3dF(1, 0, 0), gfx::Vector3dF(0, 1, 1) },
+ { 0, gfx::Vector3dF(0, 1, 0), gfx::Vector3dF(1, 0, 1) },
+ { 0, gfx::Vector3dF(0, 0, 1), gfx::Vector3dF(1, 1, 0) },
+
+ { 3, gfx::Vector3dF(1, 1, 1), gfx::Vector3dF(1, 1, 1) },
+
+ { 1.2f, gfx::Vector3dF(1.2f, -1.2f, 1.2f), gfx::Vector3dF(1, 1, 1) },
+ { 1.2f, gfx::Vector3dF(1, 1, 1), gfx::Vector3dF(1.2f, -1.2f, 1.2f) },
+
+ { 38.72f,
+ gfx::Vector3dF(1.1f, 2.2f, 3.3f), gfx::Vector3dF(4.4f, 5.5f, 6.6f) }
+ };
+
+ for (size_t i = 0; i < arraysize(tests); ++i) {
+ float actual = gfx::DotProduct(tests[i].input1, tests[i].input2);
+ EXPECT_EQ(tests[i].expected, actual);
+ }
+}
+
+TEST(Vector3dTest, CrossProduct) {
+ const struct {
+ gfx::Vector3dF expected;
+ gfx::Vector3dF input1;
+ gfx::Vector3dF input2;
+ } tests[] = {
+ { Vector3dF(), Vector3dF(), Vector3dF(1, 1, 1) },
+ { Vector3dF(), Vector3dF(1, 1, 1), Vector3dF() },
+ { Vector3dF(), Vector3dF(1, 1, 1), Vector3dF(1, 1, 1) },
+ { Vector3dF(),
+ Vector3dF(1.6f, 10.6f, -10.6f),
+ Vector3dF(1.6f, 10.6f, -10.6f) },
+
+ { Vector3dF(1, -1, 0), Vector3dF(1, 1, 1), Vector3dF(0, 0, 1) },
+ { Vector3dF(-1, 0, 1), Vector3dF(1, 1, 1), Vector3dF(0, 1, 0) },
+ { Vector3dF(0, 1, -1), Vector3dF(1, 1, 1), Vector3dF(1, 0, 0) },
+
+ { Vector3dF(-1, 1, 0), Vector3dF(0, 0, 1), Vector3dF(1, 1, 1) },
+ { Vector3dF(1, 0, -1), Vector3dF(0, 1, 0), Vector3dF(1, 1, 1) },
+ { Vector3dF(0, -1, 1), Vector3dF(1, 0, 0), Vector3dF(1, 1, 1) }
+ };
+
+ for (size_t i = 0; i < arraysize(tests); ++i) {
+ SCOPED_TRACE(i);
+ Vector3dF actual = gfx::CrossProduct(tests[i].input1, tests[i].input2);
+ EXPECT_EQ(tests[i].expected.ToString(), actual.ToString());
+ }
+}
+
+TEST(Vector3dFTest, ClampVector3dF) {
+ Vector3dF a;
+
+ a = Vector3dF(3.5f, 5.5f, 7.5f);
+ EXPECT_EQ(Vector3dF(3.5f, 5.5f, 7.5f).ToString(), a.ToString());
+ a.SetToMax(Vector3dF(2, 4.5f, 6.5f));
+ EXPECT_EQ(Vector3dF(3.5f, 5.5f, 7.5f).ToString(), a.ToString());
+ a.SetToMax(Vector3dF(3.5f, 5.5f, 7.5f));
+ EXPECT_EQ(Vector3dF(3.5f, 5.5f, 7.5f).ToString(), a.ToString());
+ a.SetToMax(Vector3dF(4.5f, 2, 6.5f));
+ EXPECT_EQ(Vector3dF(4.5f, 5.5f, 7.5f).ToString(), a.ToString());
+ a.SetToMax(Vector3dF(3.5f, 6.5f, 6.5f));
+ EXPECT_EQ(Vector3dF(4.5f, 6.5f, 7.5f).ToString(), a.ToString());
+ a.SetToMax(Vector3dF(3.5f, 5.5f, 8.5f));
+ EXPECT_EQ(Vector3dF(4.5f, 6.5f, 8.5f).ToString(), a.ToString());
+ a.SetToMax(Vector3dF(8.5f, 10.5f, 12.5f));
+ EXPECT_EQ(Vector3dF(8.5f, 10.5f, 12.5f).ToString(), a.ToString());
+
+ a.SetToMin(Vector3dF(9.5f, 11.5f, 13.5f));
+ EXPECT_EQ(Vector3dF(8.5f, 10.5f, 12.5f).ToString(), a.ToString());
+ a.SetToMin(Vector3dF(8.5f, 10.5f, 12.5f));
+ EXPECT_EQ(Vector3dF(8.5f, 10.5f, 12.5f).ToString(), a.ToString());
+ a.SetToMin(Vector3dF(7.5f, 11.5f, 13.5f));
+ EXPECT_EQ(Vector3dF(7.5f, 10.5f, 12.5f).ToString(), a.ToString());
+ a.SetToMin(Vector3dF(9.5f, 9.5f, 13.5f));
+ EXPECT_EQ(Vector3dF(7.5f, 9.5f, 12.5f).ToString(), a.ToString());
+ a.SetToMin(Vector3dF(9.5f, 11.5f, 11.5f));
+ EXPECT_EQ(Vector3dF(7.5f, 9.5f, 11.5f).ToString(), a.ToString());
+ a.SetToMin(Vector3dF(3.5f, 5.5f, 7.5f));
+ EXPECT_EQ(Vector3dF(3.5f, 5.5f, 7.5f).ToString(), a.ToString());
+}
+
+TEST(Vector3dTest, AngleBetweenVectorsInDegress) {
+ const struct {
+ float expected;
+ gfx::Vector3dF input1;
+ gfx::Vector3dF input2;
+ } tests[] = {
+ {0, gfx::Vector3dF(0, 1, 0), gfx::Vector3dF(0, 1, 0)},
+ {90, gfx::Vector3dF(0, 1, 0), gfx::Vector3dF(0, 0, 1)},
+ {45,
+ gfx::Vector3dF(0, 1, 0),
+ gfx::Vector3dF(0, 0.70710678188f, 0.70710678188f)},
+ {180, gfx::Vector3dF(0, 1, 0), gfx::Vector3dF(0, -1, 0)},
+ };
+
+ for (size_t i = 0; i < arraysize(tests); ++i) {
+ float actual =
+ gfx::AngleBetweenVectorsInDegrees(tests[i].input1, tests[i].input2);
+ EXPECT_FLOAT_EQ(tests[i].expected, actual);
+ actual =
+ gfx::AngleBetweenVectorsInDegrees(tests[i].input2, tests[i].input1);
+ EXPECT_FLOAT_EQ(tests[i].expected, actual);
+ }
+}
+
+TEST(Vector3dTest, ClockwiseAngleBetweenVectorsInDegress) {
+ const struct {
+ float expected;
+ gfx::Vector3dF input1;
+ gfx::Vector3dF input2;
+ } tests[] = {
+ {0, gfx::Vector3dF(0, 1, 0), gfx::Vector3dF(0, 1, 0)},
+ {90, gfx::Vector3dF(0, 1, 0), gfx::Vector3dF(0, 0, -1)},
+ {45,
+ gfx::Vector3dF(0, -1, 0),
+ gfx::Vector3dF(0, -0.70710678188f, 0.70710678188f)},
+ {180, gfx::Vector3dF(0, -1, 0), gfx::Vector3dF(0, 1, 0)},
+ {270, gfx::Vector3dF(0, 1, 0), gfx::Vector3dF(0, 0, 1)},
+ };
+
+ const gfx::Vector3dF normal_vector(1.0f, 0.0f, 0.0f);
+
+ for (size_t i = 0; i < arraysize(tests); ++i) {
+ float actual = gfx::ClockwiseAngleBetweenVectorsInDegrees(
+ tests[i].input1, tests[i].input2, normal_vector);
+ EXPECT_FLOAT_EQ(tests[i].expected, actual);
+ actual = -gfx::ClockwiseAngleBetweenVectorsInDegrees(
+ tests[i].input2, tests[i].input1, normal_vector);
+ if (actual < 0.0f)
+ actual += 360.0f;
+ EXPECT_FLOAT_EQ(tests[i].expected, actual);
+ }
+}
+
+TEST(Vector3dTest, GetNormalized) {
+ const struct {
+ bool expected;
+ gfx::Vector3dF v;
+ gfx::Vector3dF normalized;
+ } tests[] = {
+ {false, gfx::Vector3dF(0, 0, 0), gfx::Vector3dF(0, 0, 0)},
+ {false,
+ gfx::Vector3dF(std::numeric_limits<float>::min(),
+ std::numeric_limits<float>::min(),
+ std::numeric_limits<float>::min()),
+ gfx::Vector3dF(std::numeric_limits<float>::min(),
+ std::numeric_limits<float>::min(),
+ std::numeric_limits<float>::min())},
+ {true, gfx::Vector3dF(1, 0, 0), gfx::Vector3dF(1, 0, 0)},
+ {true, gfx::Vector3dF(std::numeric_limits<float>::max(), 0, 0),
+ gfx::Vector3dF(1, 0, 0)},
+ };
+
+ for (size_t i = 0; i < arraysize(tests); ++i) {
+ gfx::Vector3dF n;
+ EXPECT_EQ(tests[i].expected, tests[i].v.GetNormalized(&n));
+ EXPECT_EQ(tests[i].normalized.ToString(), n.ToString());
+ }
+}
+
+} // namespace gfx
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