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 *                                                                                       *
 * OpenSpace                                                                             *
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 * Copyright (c) 2014-2017                                                               *
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#include <openspace/scene/scenegraphnode.h>
#include <modules/globebrowsing/geometry/aabb.h>

#include <fstream>
#include <glm/glm.hpp>

class AABBTest : public testing::Test {};

TEST_F(AABBTest, Contains2) {
    using namespace openspace::globebrowsing;
    AABB2 a1;
    AABB2 a2;
    /*
        a1
        +-----+
        |+---+|
        ||a2 ||
        |+---+|
        +-----+
    */

    a1.expand(glm::vec2(0, 0));
    a1.expand(glm::vec2(1, 1));

    a2.expand(glm::vec2(0.1, 0.1));
    a2.expand(glm::vec2(0.9, 0.9));

    EXPECT_TRUE(a1.contains(a2)) << "a1 should contain a2";
    EXPECT_FALSE(a2.contains(a1)) << "a2 should not contain a1";
    EXPECT_TRUE(a1.intersects(a2)) << "a1 should intersect a2";
    EXPECT_TRUE(a2.intersects(a1)) << "a2 should intersect a1";

    EXPECT_EQ(AABB2::AABBSpatialRelation::Containing, a1.relationTo(a2)) << "a1 contains a2";
    EXPECT_EQ(AABB2::AABBSpatialRelation::Contained, a2.relationTo(a1)) << "a2 contained by a1";

}


TEST_F(AABBTest, Intersects2) {
    using namespace openspace::globebrowsing;
    AABB2 a1;
    AABB2 a2;

    /*
    a1
    +-----+
    |     |
    |     |   a2
    |    ++----+
    +----++    |
         |     |
         |     |
         +-----+
    */

    a1.expand(glm::vec2(0, 0));
    a1.expand(glm::vec2(1, 1));

    a2.expand(glm::vec2(0.9, 0.9));
    a2.expand(glm::vec2(1.9, 1.9));

    EXPECT_FALSE(a1.contains(a2)) << "a1 should not contain a2";
    EXPECT_FALSE(a2.contains(a1)) << "a2 should not contain a1";
    EXPECT_TRUE(a1.intersects(a2)) << "a1 should intersect a2";
    EXPECT_TRUE(a2.intersects(a1)) << "a2 should intersect a1";

    EXPECT_EQ(AABB2::AABBSpatialRelation::Intersecting, a1.relationTo(a2)) << "They should intersect";
    EXPECT_EQ(AABB2::AABBSpatialRelation::Intersecting, a2.relationTo(a1)) << "They should intersect";

}

TEST_F(AABBTest, Contains3) {
    using namespace openspace::globebrowsing;
    AABB3 a1;
    AABB3 a2;

    a1.expand(glm::vec3(0, 0, 0));
    a1.expand(glm::vec3(1, 1, 1));

    a2.expand(glm::vec3(0.1, 0.1, 0.1));
    a2.expand(glm::vec3(0.9, 0.9, 0.9));

    EXPECT_TRUE(a1.contains(a2)) << "a1 should contain a2";
    EXPECT_FALSE(a2.contains(a1)) << "a2 should not contain a1";
    EXPECT_TRUE(a1.intersects(a2)) << "a1 should intersect a2";
    EXPECT_TRUE(a2.intersects(a1)) << "a2 should intersect a1";

    EXPECT_EQ(AABB3::AABBSpatialRelation::Containing, a1.relationTo(a2)) << "a1 contains a2";
    EXPECT_EQ(AABB3::AABBSpatialRelation::Contained, a2.relationTo(a1)) << "a2 contained by a1";

}


TEST_F(AABBTest, Intersects3) {
    using namespace openspace::globebrowsing;
    AABB3 a1;
    AABB3 a2;

    a1.expand(glm::vec3(0, 0, 0));
    a1.expand(glm::vec3(1, 1, 1));

    a2.expand(glm::vec3(0.9, 0.9, 0.9));
    a2.expand(glm::vec3(1.9, 1.9, 1.9));

    EXPECT_TRUE(a1.intersects(a2)) << "a1 should intersect a2";
    EXPECT_TRUE(a2.intersects(a1)) << "a2 should intersect a1";
    EXPECT_FALSE(a1.contains(a2)) << "a1 should not contain a2";
    EXPECT_FALSE(a2.contains(a1)) << "a2 should not contain a1";

    EXPECT_EQ(AABB3::AABBSpatialRelation::Intersecting, a1.relationTo(a2)) << "They should intersect";
    EXPECT_EQ(AABB3::AABBSpatialRelation::Intersecting, a2.relationTo(a1)) << "They should intersect";
}