{
let camera,
renderer,
scene,
controls,
mesh;
init();
function createCamera() {
// Create a Camera
const fov = 45; // AKA Field of View
const aspect = width / 400;
const near = 0.1; // the near clipping plane
const far = 1000; // the far clipping plane
camera = new THREE.PerspectiveCamera(fov, aspect, near, far);
camera.position.set(-4, 2, 4);
}
function createLights() {
// Create a directional light
const ambientLight = new THREE.HemisphereLight(0xddeeff, 0x202020, 9);
const mainLight = new THREE.DirectionalLight(0xffffff, 3.0);
scene.add(ambientLight);
// move the light back and up a bit
mainLight.position.set(10, 10, 10);
// remember to add the light to the scene
scene.add(ambientLight, mainLight);
}
function createMaterials() {
const body = new THREE.MeshStandardMaterial({
color: 0xff3333,
flatShading: true
})
body.color.convertSRGBToLinear();
const detail = new THREE.MeshStandardMaterial({
color: 0x333333,
flatShading: true
})
detail.color.convertSRGBToLinear();
return {
body,
detail
}
}
function createGeometries() {
const nose = new THREE.CylinderBufferGeometry(0.75, 0.75, 3, 12);
const cabin = new THREE.BoxBufferGeometry(2, 2.25, 1.5);
const chimney = new THREE.CylinderBufferGeometry(0.3, 0.1, 0.5);
const wheel = new THREE.CylinderBufferGeometry(0.4, 0.4, 1.75, 16);
wheel.rotateX(Math.PI / 2);
return {
nose,
cabin,
chimney,
wheel
}
}
function createMeshes() {
const materials = createMaterials();
const geometries = createGeometries();
const nose = new THREE.Mesh(geometries.nose, materials.body);
nose.rotation.z = Math.PI / 2;
nose.position.x = -1;
const cabin = new THREE.Mesh(geometries.cabin, materials.body);
cabin.position.set(1.5, 0.4, 0);
const chimney = new THREE.Mesh(geometries.chimney, materials.detail);
chimney.position.set(-2, 0.9, 0);
const smallWheelRear = new THREE.Mesh(geometries.wheel, materials.detail);
smallWheelRear.position.set(0, -0.5, 0)
const smallWheelCenter = smallWheelRear.clone();
smallWheelCenter.position.x = -1;
const smallWheelFront = smallWheelRear.clone();
smallWheelFront.position.x = -2;
const bigWheel = smallWheelRear.clone()
bigWheel.scale.set(2, 2, 1.25)
bigWheel.position.set(1.5, -0.1, 0)
const train = new THREE.Group();
train.add(nose, cabin, chimney,
smallWheelRear, smallWheelCenter, smallWheelFront,
bigWheel)
// Add the mesh to the scene
scene.add(train);
}
function createRenderer() {
// create the renderer
renderer = new THREE.WebGLRenderer({
antialias: true
});
renderer.setSize(width, 400);
renderer.setPixelRatio(window.devicePixelRatio);
renderer.gammaFactor = 2.2;
renderer.gammaOutput = true;
renderer.physicallyCorrectLights = true;
}
function init() {
// create a Scene
scene = new THREE.Scene();
// Set the background color
scene.background = new THREE.Color('skyblue');
createCamera();
createLights();
createMeshes();
createRenderer();
controls = new THREE.OrbitControls(camera, renderer.domElement);
invalidation.then(() => (controls.dispose(), renderer.dispose()));
}
renderer.setAnimationLoop(() => {
update();
render();
})
function render() {
renderer.render(scene, camera);
}
function update() {
//mesh.rotation.z += 0.01;
//mesh.rotation.x += 0.01;
//mesh.rotation.y += 0.01;
}
function onWindowResize() {
camera.aspect = width / 400;;
camera.updateProjectionMatrix();
renderer.setSize(width, 400)
}
window.addEventListener('resize', onWindowResize)
yield renderer.domElement;
}
THREE = {
const THREE = window.THREE = await require("three@0.99.0/build/three.min.js");
await require("three@0.99.0/examples/js/controls/OrbitControls.js").catch(() => {});
return window.THREE;
}
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