axyz/src/Tests/CollisionTest.cpp

//#define BOOST_TEST_MODULE collTest
#include <boost/test/unit_test.hpp>
#include <boost/test/execution_monitor.hpp>
using boost::unit_test_framework::test_suite;
using boost::unit_test_framework::test_case;
#include "Engine/Collision/Collision.h"
#include "Engine/Core/AABB.h"
#include "Engine/Core/Ray.h"
#include <stdlib.h>//srand
#include "Engine/Core/OctTree.h"
//vs model
#include <sstream>
#include <string>

//ray vs model
#include "Engine/Core/ResourceManager.h"
#include "Engine/Rendering/Model.h"
#include "Engine/Core/Ray.h"

//vs memleaks
//#define _CRTDBG_MAP_ALLOC
//#include <stdlib.h>
//#include <crtdbg.h>
//#define DEBUG_CLIENTBLOCK new( _CLIENT_BLOCK, __FILE__, __LINE__)
//#define new DEBUG_CLIENTBLOCK

void RayTest(std::string fileName) {
    //simple box test
    Ray ray(glm::vec3(-50, 0, 0), glm::vec3(1, 0, 0));
    //using a rawmodel here, else we have to init the renderingsystem
    ResourceManager::RegisterType<RawModel>("RawModel");
    auto unitBox = ResourceManager::Load<RawModel>(fileName);
    BOOST_REQUIRE(unitBox != nullptr);
    bool hit = Collision::RayVsModel(ray, unitBox->m_Vertices, unitBox->m_Indices);
    BOOST_CHECK(hit);
    ray.SetDirection(glm::vec3(-1, 0, 0));
    hit = Collision::RayVsModel(ray, unitBox->m_Vertices, unitBox->m_Indices);
    BOOST_CHECK(!hit);
}

BOOST_AUTO_TEST_SUITE(collisionTests)

BOOST_AUTO_TEST_CASE(collisionTest)
{
    //memleak
    int* globalLeak = new int[5];

    //fixed seed
    srand(2);
    AABB someAABB;
    glm::vec3 minPos;
    glm::vec3 maxPos;
    bool z;
    int test = 0;
    for (size_t i = 0; i < 10; i++)
    {
        Ray ray(
            glm::vec3(rand() % 100, rand() % 100, rand() % 100), 
            glm::vec3(rand() % 100, rand() % 100, rand() % 100)
        );
        minPos.x = rand() % 100;
        minPos.y = rand() % 100;
        minPos.z = rand() % 100;
        maxPos.x = rand() % 100;
        maxPos.y = rand() % 100;
        maxPos.z = rand() % 100;

        someAABB = AABB(minPos, maxPos);
        z = Collision::RayVsAABB(ray, someAABB);
        if (z) ++test;
    }
    BOOST_CHECK(test >= 0);

    //_CrtDumpMemoryLeaks();
}

BOOST_AUTO_TEST_CASE(collisionTest2)
{
    //fixed seed
    srand(2);
    AABB someAABB;
    glm::vec3 minPos;
    glm::vec3 maxPos;
    bool z;
    int test = 0;
    for (size_t i = 0; i < 1000000; i++)
    {
        Ray ray(
            glm::vec3(rand() % 100, rand() % 100, rand() % 100),
            glm::vec3(rand() % 100, rand() % 100, rand() % 100)
            );
        minPos.x = rand() % 100;
        minPos.y = rand() % 100;
        minPos.z = rand() % 100;
        maxPos.x = rand() % 100;
        maxPos.y = rand() % 100;
        maxPos.z = rand() % 100;

        someAABB = AABB(minPos, maxPos);
        z = Collision::RayAABBIntr(ray, someAABB);
        if (z) ++test;
    }
    BOOST_CHECK(test >= 0);
}

BOOST_AUTO_TEST_CASE(rayVsModelTest)
{
    //simple box test
    RayTest("Models/Core/UnitCube.obj");
}

BOOST_AUTO_TEST_CASE(rayVsModelTest2)
{
    //advanced test, this will check so rayVSAABB and rayVsModel(with boxmodel) gives the same result (hit/miss)
    //testing with different seeds
//    srand(7676762);
//    srand(7676462);
//    srand(7462);
    srand(72);
    AABB someAABB;
    glm::vec3 minPos;
    glm::vec3 maxPos;
    bool z;
    int test = 0;
    //min/max is the same as the rawmodels boundaries ofcourse
    minPos = glm::vec3(-0.5f, -0.5f, -0.5f);
    maxPos = glm::vec3(0.5f, 0.5f, 0.5f);
    someAABB = AABB(minPos, maxPos);
    //using a rawmodel here, else we have to init the renderingsystem
    ResourceManager::RegisterType<RawModel>("RawModel");
    auto unitBox = ResourceManager::Load<RawModel>("Models/Core/UnitCube.obj");
    BOOST_CHECK(unitBox != nullptr);

    for (size_t i = 0; i < 1000000; i++)
    {
        Ray ray(
            glm::vec3(-2, 0, 0),
            glm::vec3(rand() % 100, rand() % 100, rand() % 100)
            );
        //if we normalize the ray.direction when its 0,0,0 then we get nan,nan,nan - thus we have this check to prevent that
        if (glm::any(glm::isnan(ray.Direction())))
            continue;

        z = Collision::RayVsAABB(ray, someAABB);
        if (z) {
            //hit
            bool hit = Collision::RayVsModel(ray, unitBox->m_Vertices, unitBox->m_Indices);
            if (!hit) {
                //if rayvsaabb hit but rayvvmodel didnt hit, we get to here
                glm::vec3 outtttttttt;
                hit = Collision::RayVsModel(ray, unitBox->m_Vertices, unitBox->m_Indices, outtttttttt);
                hit = Collision::RayVsModel(ray, unitBox->m_Vertices, unitBox->m_Indices);
            }
            else {
                hit = hit;
            }
            BOOST_CHECK(hit);
        }
        ////breakpoint test
        //if (!z) {
        //    z = z;
        //}
        //
        bool hit = Collision::RayVsModel(ray, unitBox->m_Vertices, unitBox->m_Indices);
        ////breakpoint test
        //if (!hit) {
        //    hit = hit;
        //}
        if (hit) {
            //hit
            z = Collision::RayVsAABB(ray, someAABB);
            if (!z) {
                //if rayvsmodel hit but rayvsaabb didnt hit then we get to here
                z = Collision::RayVsAABB(ray, someAABB);
                glm::vec3 outtttttttt;
                hit = Collision::RayVsModel(ray, unitBox->m_Vertices, unitBox->m_Indices, outtttttttt);
                hit = Collision::RayVsModel(ray, unitBox->m_Vertices, unitBox->m_Indices);
            }
            else {
                z = z;
            }
            BOOST_CHECK(hit);
        }

    }
}
BOOST_AUTO_TEST_CASE(rayVsModelTest3)
{
    //simple test
    RayTest("Models/Core/UnitSphere.obj");
}

BOOST_AUTO_TEST_CASE(rayVsModelTest4)
{
    //simple test
    RayTest("Models/Core/UnitCylinder.obj");
}

BOOST_AUTO_TEST_CASE(rayVsModelTest5)
{
    //simple test
    RayTest("Models/Core/UnitRaptor.obj");
}
BOOST_AUTO_TEST_CASE(octTest)
{
    glm::vec3 mini = glm::vec3(-1, -1, -1);
    glm::vec3 maxi = glm::vec3(1, 1, 1);
    OctTree tree(AABB(mini, maxi), 2);
    tree.AddDynamicObject(AABB(mini, -0.9f*maxi));
    OctTree::Output data;
    glm::vec3 origin = 3.0f * mini;
    bool rayIntersected = tree.RayCollides(Ray(origin , mini - origin), data);
    BOOST_CHECK(rayIntersected);
    tree.ClearDynamicObjects();
    rayIntersected = tree.RayCollides(Ray(origin, mini - origin), data);
    BOOST_CHECK(!rayIntersected);
}

BOOST_AUTO_TEST_SUITE_END()