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// This file implements unit tests for class BoundingBox.
#include "core/cross/client.h"
#include "tests/common/win/testing_common.h"
#include "core/cross/bounding_box.h"
#include "core/cross/math_utilities.h"
#include "core/cross/ray_intersection_info.h"
#include "core/cross/transform.h"
#include "core/cross/renderer.h"
namespace o3d {
class BoundingBoxTest : public testing::Test {
};
// Tests the creation of a BoundingBox.
TEST_F(BoundingBoxTest, Basic) {
// Check that it defaults to invalid.
EXPECT_FALSE(BoundingBox().valid());
BoundingBox bounding_box(Point3(-1.0f, 2.0f, -3.0f),
Point3(1.0f, -2.0f, 3.0f));
// Check it's valid.
EXPECT_TRUE(bounding_box.valid());
// Check it got set.
EXPECT_EQ(bounding_box.min_extent().getX(), -1.0f);
EXPECT_EQ(bounding_box.min_extent().getY(), -2.0f);
EXPECT_EQ(bounding_box.min_extent().getZ(), -3.0f);
EXPECT_EQ(bounding_box.max_extent().getX(), 1.0f);
EXPECT_EQ(bounding_box.max_extent().getY(), 2.0f);
EXPECT_EQ(bounding_box.max_extent().getZ(), 3.0f);
}
// Tests BoundingBox::Add
TEST_F(BoundingBoxTest, Add) {
BoundingBox box(Point3(-1.0f, -2.0f, -3.0f),
Point3(1.0f, 2.0f, 3.0f));
box.Add(BoundingBox(Point3(-4.0f, -1.0f, 9.0f),
Point3(5.0f, 1.0f, 11.0f)),
&box);
// Check the results are the sum of both boxes.
EXPECT_TRUE(box.valid());
EXPECT_EQ(box.min_extent().getX(), -4.0f);
EXPECT_EQ(box.min_extent().getY(), -2.0f);
EXPECT_EQ(box.min_extent().getZ(), -3.0f);
EXPECT_EQ(box.max_extent().getX(), 5.0f);
EXPECT_EQ(box.max_extent().getY(), 2.0f);
EXPECT_EQ(box.max_extent().getZ(), 11.0f);
// Check only the original box is valid.
box.Add(BoundingBox(),
&box);
// Check the results are just the first box.
EXPECT_TRUE(box.valid());
EXPECT_EQ(box.min_extent().getX(), -4.0f);
EXPECT_EQ(box.min_extent().getY(), -2.0f);
EXPECT_EQ(box.min_extent().getZ(), -3.0f);
EXPECT_EQ(box.max_extent().getX(), 5.0f);
EXPECT_EQ(box.max_extent().getY(), 2.0f);
EXPECT_EQ(box.max_extent().getZ(), 11.0f);
// Check only the otherbox is valid.
box = BoundingBox();
box.Add(BoundingBox(Point3(-4.0f, -1.0f, 9.0f),
Point3(5.0f, 1.0f, 11.0f)),
&box);
// Check the results are just the second box.
EXPECT_TRUE(box.valid());
EXPECT_EQ(box.min_extent().getX(), -4.0f);
EXPECT_EQ(box.min_extent().getY(), -1.0f);
EXPECT_EQ(box.min_extent().getZ(), 9.0f);
EXPECT_EQ(box.max_extent().getX(), 5.0f);
EXPECT_EQ(box.max_extent().getY(), 1.0f);
EXPECT_EQ(box.max_extent().getZ(), 11.0f);
// Check neither box valid
box = BoundingBox();
box.Add(BoundingBox(), &box);
// Check the results are not valid.
EXPECT_FALSE(box.valid());
}
static const float kEpsilon = 0.0001f;
// Tests BoundingBox::Mul
TEST_F(BoundingBoxTest, Mul) {
BoundingBox bounding_box(Point3(-10.0f, 1.0f, -3.0f),
Point3(0.0f, 2.0f, 3.0f));
// Rotate around Z 180 degrees and check the values are as expected.
BoundingBox box;
bounding_box.Mul(Matrix4::rotationZ(3.14159f), &box);
EXPECT_TRUE(fabsf(box.min_extent().getX() - 0.0f) < kEpsilon);
EXPECT_TRUE(fabsf(box.min_extent().getY() - -2.0f) < kEpsilon);
EXPECT_TRUE(fabsf(box.min_extent().getZ() - -3.0f) < kEpsilon);
EXPECT_TRUE(fabsf(box.max_extent().getX() - 10.0f) < kEpsilon);
EXPECT_TRUE(fabsf(box.max_extent().getY() - -1.0f) < kEpsilon);
EXPECT_TRUE(fabsf(box.max_extent().getZ() - 3.0f) < kEpsilon);
}
// Tests BoundingBox::IntersectRay
TEST_F(BoundingBoxTest, IntersectRay) {
BoundingBox bounding_box(Point3(-1.0f, -2.0f, -3.0f),
Point3(1.0f, 2.0f, 3.0f));
// Check a ray that collides.
RayIntersectionInfo info;
bounding_box.IntersectRay(Point3(-2.0f, -4.0f, -6.0f),
Point3(2.0f, 4.0f, 6.0f),
&info);
EXPECT_TRUE(info.valid());
EXPECT_TRUE(info.intersected());
EXPECT_TRUE(fabsf(info.position().getX() - -1.0f) < kEpsilon);
EXPECT_TRUE(fabsf(info.position().getY() - -2.0f) < kEpsilon);
EXPECT_TRUE(fabsf(info.position().getZ() - -3.0f) < kEpsilon);
// Check a ray that misses.
bounding_box.IntersectRay(Point3(2.0f, 4.0f, 6.0f),
Point3(12.0f, 14.0f, 16.0f),
&info);
EXPECT_TRUE(info.valid());
EXPECT_FALSE(info.intersected());
// Check that an invalid box returns an invalid ray.
BoundingBox invalid_box;
invalid_box.IntersectRay(Point3(2.0f, 4.0f, 6.0f),
Point3(12.0f, 14.0f, 16.0f),
&info);
EXPECT_FALSE(info.valid());
}
// Tests BoundingBox::InFrustum
TEST_F(BoundingBoxTest, InFrustum) {
Matrix4 view(Matrix4::lookAt(Point3(0.0f, 0.0f, 0.0f),
Point3(0.0f, 0.0f, 1.0f),
Vector3(0.0f, 1.0f, 0.0f)));
Matrix4 projection(Vectormath::Aos::CreatePerspectiveMatrix(
45.0f * 180.0f / 3.14159f,
4.0f / 3.0f,
1.0,
10.0));
Matrix4 frustum(projection * view);
// Check a box completely inside the frustum.
EXPECT_TRUE(BoundingBox(Point3(1.0f, 1.0f, 1.0f),
Point3(2.0f, 2.0f, 2.0f)).InFrustum(frustum));
// Check a box completely outside the frustum.
EXPECT_FALSE(BoundingBox(Point3(11.0f, 11.0f, 11.0f),
Point3(12.0f, 12.0f, 12.0f)).InFrustum(frustum));
// Check a box crossing the edge of the frustum.
EXPECT_TRUE(BoundingBox(Point3(1.0f, 1.0f, 0.0f),
Point3(2.0f, 2.0f, 2.0f)).InFrustum(frustum));
}
#if 0 // TODO: change this to a ParamOperation
// Tests ParamBindFloat3sToBoundingBox
TEST_F(BoundingBoxTest, ParamBindFloat3sToBoundingBox) {
Client client(g_service_locator);
client.Init();
Pack* pack = client.CreatePack();
Transform* transform = pack->Create<Transform>();
ASSERT_TRUE(transform != NULL);
ParamBoundingBox* box_param = transform->CreateParam<ParamBoundingBox>("foo");
ASSERT_TRUE(box_param != NULL);
ParamBindFloat3sToBoundingBox* bind =
pack->Create<ParamBindFloat3sToBoundingBox>();
ASSERT_TRUE(bind != NULL);
ParamFloat3* param1 = transform->CreateParam<ParamFloat3>("f1");
ParamFloat3* param2 = transform->CreateParam<ParamFloat3>("f2");
ASSERT_TRUE(param1 != NULL);
ASSERT_TRUE(param2 != NULL);
// Check that we can bind to the inputs and outputs.
EXPECT_TRUE(
bind->BindInput(ParamBindFloat3sToBoundingBox::kInput1Name, param1));
EXPECT_TRUE(
bind->BindInput(ParamBindFloat3sToBoundingBox::kInput2Name, param2));
EXPECT_TRUE(
bind->BindOutput(ParamBindFloat3sToBoundingBox::kOutputName, box_param));
// Check that if we set the values, the make it through the bind and update
// our bounding box.
param1->set_value(Float3(-1.0f, 2.0f, -3.0f));
param2->set_value(Float3(1.0f, -2.0f, 3.0f));
BoundingBox box(box_param->value());
EXPECT_EQ(box.min_extent()[0], -1.0f);
EXPECT_EQ(box.min_extent()[1], -2.0f);
EXPECT_EQ(box.min_extent()[2], -3.0f);
EXPECT_EQ(box.max_extent()[0], 1.0f);
EXPECT_EQ(box.max_extent()[1], 2.0f);
EXPECT_EQ(box.max_extent()[2], 3.0f);
pack->Destroy();
}
#endif
} // namespace o3d