import * as THREE from 'three';


// // const scene = new THREE.Scene();
// // const camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 0.1, 1000 );

// // const renderer = new THREE.WebGLRenderer();
// // renderer.setSize( window.innerWidth, window.innerHeight );
// // document.body.appendChild( renderer.domElement );

// // const geometry = new THREE.BoxGeometry( 1, 2, 1 );
// // const material = new THREE.MeshBasicMaterial( { color: 0x277BC0 } );
// // const cube = new THREE.Mesh( geometry, material );
// // scene.add( cube );

// // camera.position.z = 5;

// // const points = [];
// // points.push( new THREE.Vector3( - 10, 0, 0 ) );
// // points.push( new THREE.Vector3( 0, 10, 0 ) );
// // points.push( new THREE.Vector3( 10, 0, 0 ) );


// // const material2 = new THREE.LineBasicMaterial( { color: 0x0000ff } );
// // const geometry2 = new THREE.BufferGeometry().setFromPoints( points );
// // const line = new THREE.Line( geometry2, material2 );

// // scene.add( line );

// // function animate() {
// // 	requestAnimationFrame( animate );
// // 	renderer.render( scene, camera );
// // }
// // animate();




import Stats from 'three/addons/libs/stats.module.js';

import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
import { OutlineEffect } from 'three/addons/effects/OutlineEffect.js';
import { FontLoader } from 'three/addons/loaders/FontLoader.js';
import { TextGeometry } from 'three/addons/geometries/TextGeometry.js';

let container, stats;

let camera, scene, renderer, effect;
let particleLight;

const loader = new FontLoader();
loader.load( 'fonts/gentilis_regular.typeface.json', function ( font ) {

    init( font );
    animate();

} );

function init( font ) {

    container = document.createElement( 'div' );
    document.body.appendChild( container );

    camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 2500 );
    camera.position.set( 0.0, 400, 400 * 3.5 );

    //

    scene = new THREE.Scene();
    scene.background = new THREE.Color( 0x444488 );

    //

    renderer = new THREE.WebGLRenderer( { antialias: true } );
    renderer.setPixelRatio( window.devicePixelRatio );
    renderer.setSize( window.innerWidth, window.innerHeight );
    container.appendChild( renderer.domElement );

    // Materials

    const cubeWidth = 400;
    const numberOfSphersPerSide = 5;
    const sphereRadius = ( cubeWidth / numberOfSphersPerSide ) * 0.8 * 0.5;
    const stepSize = 1.0 / numberOfSphersPerSide;
    const format = ( renderer.capabilities.isWebGL2 ) ? THREE.RedFormat : THREE.LuminanceFormat;

    const geometry = new THREE.SphereGeometry( sphereRadius, 32, 16 );

    for ( let alpha = 0, alphaIndex = 0; alpha <= 1.0; alpha += stepSize, alphaIndex ++ ) {

        const colors = new Uint8Array( alphaIndex + 2 );

        for ( let c = 0; c <= colors.length; c ++ ) {

            colors[ c ] = ( c / colors.length ) * 256;

        }

        const gradientMap = new THREE.DataTexture( colors, colors.length, 1, format );
        gradientMap.needsUpdate = true;

        for ( let beta = 0; beta <= 1.0; beta += stepSize ) {

            for ( let gamma = 0; gamma <= 1.0; gamma += stepSize ) {

                // basic monochromatic energy preservation
                const diffuseColor = new THREE.Color().setHSL( alpha, 0.5, gamma * 0.5 + 0.1 ).multiplyScalar( 1 - beta * 0.2 );

                const material = new THREE.MeshToonMaterial( {
                    color: diffuseColor,
                    gradientMap: gradientMap
                } );

                const mesh = new THREE.Mesh( geometry, material );

                mesh.position.x = alpha * 400 - 200;
                mesh.position.y = beta * 400 - 200;
                mesh.position.z = gamma * 400 - 200;

                scene.add( mesh );

            }

        }

    }

    function addLabel( name, location ) {

        const textGeo = new TextGeometry( name, {

            font: font,

            size: 20,
            height: 1,
            curveSegments: 1

        } );

        const textMaterial = new THREE.MeshBasicMaterial();
        const textMesh = new THREE.Mesh( textGeo, textMaterial );
        textMesh.position.copy( location );
        scene.add( textMesh );

    }

    addLabel( '-gradientMap', new THREE.Vector3( - 350, 0, 0 ) );
    addLabel( '+gradientMap', new THREE.Vector3( 350, 0, 0 ) );

    addLabel( '-diffuse', new THREE.Vector3( 0, 0, - 300 ) );
    addLabel( '+diffuse', new THREE.Vector3( 0, 0, 300 ) );

    particleLight = new THREE.Mesh(
        new THREE.SphereGeometry( 4, 8, 8 ),
        new THREE.MeshBasicMaterial( { color: 0xffffff } )
    );
    scene.add( particleLight );

    // Lights

    scene.add( new THREE.AmbientLight( 0xc1c1c1, 3 ) );

    const pointLight = new THREE.PointLight( 0xffffff, 2, 800, 0 );
    particleLight.add( pointLight );

    //

    effect = new OutlineEffect( renderer );

    //

    stats = new Stats();
    container.appendChild( stats.dom );

    const controls = new OrbitControls( camera, renderer.domElement );
    controls.minDistance = 200;
    controls.maxDistance = 2000;

    window.addEventListener( 'resize', onWindowResize );

}

function onWindowResize() {

    camera.aspect = window.innerWidth / window.innerHeight;
    camera.updateProjectionMatrix();

    renderer.setSize( window.innerWidth, window.innerHeight );

}

//

function animate() {

    requestAnimationFrame( animate );

    stats.begin();
    render();
    stats.end();

}

function render() {

    const timer = Date.now() * 0.00025;

    particleLight.position.x = Math.sin( timer * 7 ) * 300;
    particleLight.position.y = Math.cos( timer * 5 ) * 400;
    particleLight.position.z = Math.cos( timer * 3 ) * 300;

    effect.render( scene, camera );

}