ThreeCpp

three.js is a very powerful, simple and useful OpenGL Graphics library. I always want to express my deep appreciation to the team that created this library.(https://github.com/mrdoob/three.js). There was a time when I wanted to show how to use these 3D geometry and mathematical theories with OpenGL libraries. In that case, the examples of three.js was a very good.

However, someone who are familiar with structural languages such as C++, Java, C#, etc find it difficult to understand how three.js works. So I decided to port three.js to C++, C#. However, it seemed that it would take too much time to port the massive examples of three.js Fortunately, I found very simple and key examples in Learning Three.js written by Jos Dirksen(https://github.com/josdirksen/learning-threejs) Most of three.js core have been completed, but some code have not yet been done because I am lazy. I don't know if I can afford it, the rest will be completed as soon as time permits. The focus of this C++ porting job is the data loading part like as .obj, other models is also in progress. (c# version was done for several models)

Example code

virtual void init() override {

    renderer->shadowMap->enabled = true;
    renderer->shadowMap->type = ShadowMapType::PCFSoftShadowMap;

	    camera = std::make_shared<PerspectiveCamera>(45.0f, screenX/screenY , 0.1f, 1000.0f);
	    camera->position.set(-30.0f, 50.0f, 40.0f);
	    camera->lookAt(Vector3());

    isPerspective = true;

    Vector4 screen = Vector4(0, 0, screenX, screenY);
    controller = std::make_shared<TrackballControls>(camera, screen);

    controller->staticMoving = true;
    controller->rotateSpeed = 3.0f;
    controller->zoomSpeed = 2;
    controller->panSpeed = 2;
    controller->noZoom = false;
    controller->noPan = false;
    controller->noRotate = false;
    controller->dynamicDampingFactor = 0.2f;

    scene = std::make_shared<Scene>();
    scene->setBackgroundColor(Color().set(0xffffff));


    auto axis = std::make_shared<AxesHelper>(20);
    auto planeGeometry = std::make_shared<PlaneGeometry>(60, 20);
    auto planeMaterial = std::make_shared<MeshBasicMaterial>();
    planeMaterial->color = Color(0xcccccc);
    auto plane = std::make_shared<Mesh>(planeGeometry, planeMaterial);

    plane->rotation.setX((float)(-0.5f * M_PI));

    plane->position.set(15.0f, 0.0f, 0.0f);

    auto cubeGeometry = std::make_shared<BoxGeometry>(4, 4, 4);
    auto cubeMaterial = std::make_shared<MeshBasicMaterial>();
    cubeMaterial->color = Color(0xff0000);
    cubeMaterial->wireframe = true;
    auto cube = std::make_shared<Mesh>(cubeGeometry, cubeMaterial);
    cube->position.set(-4.0f, 3.0f, 0.0f);
    scene->add(axis);
    scene->add(plane);
    scene->add(cube);

    auto sphereGeometry = std::make_shared<SphereGeometry>(4, 20, 20);
    auto sphereMaterial = std::make_shared<MeshBasicMaterial>();
    auto sphere = std::make_shared<Mesh>(sphereGeometry, sphereMaterial);
    sphereMaterial->color = Color(0x7777ff);
    sphereMaterial->wireframe = true;

    sphere->position.set(20, 4, 2);
    scene->add(sphere);

    
}

To run application, you need to copy font files to execution directory from misc/fonts directory

Cousine-Regular.ttf,DroidSans.ttf,Karla-Regular.ttf,ProggyClean.ttf,ProggyTiny.ttf, Roboto-Medium.ttf

Example Capture

Camera, Scene, Light, TrackballControls, Material, OBJLoader

MFC Application

GLFW Application