const createScene =  () => {
    const scene = new BABYLON.Scene(engine);

    /**** カメラとライトをセット *****/
    const camera = new BABYLON.ArcRotateCamera("camera", -Math.PI / 2, Math.PI / 2.5, 10, new BABYLON.Vector3(0, 0, 0));
    camera.attachControl(canvas, true);
    const light = new BABYLON.HemisphericLight("light", new BABYLON.Vector3(1, 1, 0));

    /**** マテリアル *****/
    // 色
    const groundMat = new BABYLON.StandardMaterial("groundMat");
    groundMat.diffuseColor = new BABYLON.Color3(0, 1, 0)

    // テクスチャ
    const roofMat = new BABYLON.StandardMaterial("roofMat");
    roofMat.diffuseTexture = new BABYLON.Texture("https://assets.babylonjs.com/environments/roof.jpg");
    const boxMat = new BABYLON.StandardMaterial("boxMat");
    boxMat.diffuseTexture = new BABYLON.Texture("https://assets.babylonjs.com/environments/semihouse.png")

    // それぞれの面に違った画像をあてるためのオプションパラメータ
    const faceUV = [];
    faceUV[0] = new BABYLON.Vector4(0.6, 0.0, 1.0, 1.0); //rear face
    faceUV[1] = new BABYLON.Vector4(0.0, 0.0, 0.4, 1.0); //front face
    faceUV[2] = new BABYLON.Vector4(0.4, 0, 0.6, 1.0); //right side
    faceUV[3] = new BABYLON.Vector4(0.4, 0, 0.6, 1.0); //left side
    // top 4 and bottom 5 not seen so not set
    
    /**** World Objects *****/
    const box = BABYLON.MeshBuilder.CreateBox("box", {width: 2, faceUV: faceUV, wrap: true});
    box.material = boxMat;
    box.position.y = 0.5;
    const roof = BABYLON.MeshBuilder.CreateCylinder("roof", {diameter: 1.3, height: 1.2, tessellation: 3});
    roof.material = roofMat;
    roof.scaling.x = 0.75;
    roof.scaling.y = 2;
    roof.rotation.z = Math.PI / 2;
    roof.position.y = 1.22;
    const ground = BABYLON.MeshBuilder.CreateGround("ground", {width:10, height:10});
    ground.material = groundMat;

    return scene;
}

const createScene =  () => {
    const scene = new BABYLON.Scene(engine);

    /**** カメラとライトをセット *****/
    const camera = new BABYLON.ArcRotateCamera("camera", -Math.PI / 2, Math.PI / 2.5, 10, new BABYLON.Vector3(0, 0, 0));
    camera.attachControl(canvas, true);
    const light = new BABYLON.HemisphericLight("light", new BABYLON.Vector3(1, 1, 0));

    const ground = buildGround();
    const box = buildBox();
    const roof = buildRoof();
    
    return scene;
}

/****** 関数化したものたち ***********/
const buildGround = () => {
    //color
    const groundMat = new BABYLON.StandardMaterial("groundMat");
    groundMat.diffuseColor = new BABYLON.Color3(0, 1, 0);

    const ground = BABYLON.MeshBuilder.CreateGround("ground", {width:10, height:10});
    ground.material = groundMat;
}

const buildBox = () => {
    // テクスチャ
    const boxMat = new BABYLON.StandardMaterial("boxMat");
    boxMat.diffuseTexture = new BABYLON.Texture("https://assets.babylonjs.com/environments/cubehouse.png")

    // それぞれの面に違った画像をあてるためのオプションパラメータ
    const faceUV = [];
    faceUV[0] = new BABYLON.Vector4(0.5, 0.0, 0.75, 1.0); //rear face
    faceUV[1] = new BABYLON.Vector4(0.0, 0.0, 0.25, 1.0); //front face
    faceUV[2] = new BABYLON.Vector4(0.25, 0, 0.5, 1.0); //right side
    faceUV[3] = new BABYLON.Vector4(0.75, 0, 1.0, 1.0); //left side
    // top 4 and bottom 5 not seen so not set

    /**** World Objects *****/
    const box = BABYLON.MeshBuilder.CreateBox("box", {faceUV: faceUV, wrap: true});
    box.material = boxMat;
    box.position.y = 0.5;

    return box;
}

// 屋根組み立て
const buildRoof = () => {
    // テクスチャ
    const roofMat = new BABYLON.StandardMaterial("roofMat");
    roofMat.diffuseTexture = new BABYLON.Texture("https://assets.babylonjs.com/environments/roof.jpg");

    const roof = BABYLON.MeshBuilder.CreateCylinder("roof", {diameter: 1.3, height: 1.2, tessellation: 3});
    roof.material = roofMat;
    roof.scaling.x = 0.75;
    roof.rotation.z = Math.PI / 2;
    roof.position.y = 1.22;

    return roof;
}