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WebGL Pasta
renderer = {
const renderer = this || new THREE.WebGLRenderer({clearAlpha: 1, antialias: true, alpha: false});
renderer.setClearColor(background);
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(width, height);
renderer.sortObjects = false;
renderer.gammaInput = true;
renderer.gammaOutput = true;
return renderer;
}
scene = {
const scene = this || new THREE.Scene();
if (!this) {
scene.add(camera);
lights.forEach(l => scene.add(l));
}
if (!scene.pile || scene.pile.uuid !== pastaPile.uuid) {
if (scene.pile) scene.remove(scene.pile);
scene.add(pastaPile);
scene.pile = pastaPile;
}
return scene;
}
lights = {
const lights = this || [
new THREE.PointLight(0x000000, 1, 5500),
new THREE.PointLight(0x000000, 1, 5500),
new THREE.PointLight(0x000000, 2, 3000)
];
lights[0].position.set(4000, 0, 0);
lights[1].position.set(-4000, 0, 0);
lights[2].position.set(0, 0, 0);
lights[0].color.setStyle(light0);
lights[1].color.setStyle(light1);
lights[2].color.setStyle(light2);
return lights;
}
camera = {
const camera = this || new THREE.PerspectiveCamera(60, width / height, 1, 20000);
camera.position.z = cameraZ;
camera.aspect = width / height;
camera.updateProjectionMatrix();
return camera;
}
showPasta = {
eachPasta((p, i) => {
p.visible = i < numPasta;
});
}
geometry = {
switch (pastaType) {
case "pipe doppia":
return new THREE.TorusBufferGeometry(pastaSize, 0.3, 32, 16, Math.PI * 1.25);
case "spaghettiOs":
return new THREE.TorusKnotBufferGeometry(pastaSize * 0.8, 0.124, 128, 4, 1, 1);
}
}
material = {
var material = this || new THREE.MeshPhongMaterial({combine: THREE.MixOperation, specular: 0x333333});
material.side = THREE.DoubleSide;
material.shininess = shininess;
eachPasta(p => {p.material = material;});
return material;
}
pastaPile = {
const pastaPile = new THREE.Object3D();
pastaPile.meshes = [];
var dd = 8000;
for ( var i = 0; i < maxPasta; i ++ ) {
var mesh = new THREE.Mesh( geometry );
mesh.position.x = THREE.Math.randFloatSpread(dd);
mesh.position.y = THREE.Math.randFloatSpread(dd);
mesh.position.z = THREE.Math.randFloatSpread(dd);
mesh.rotation.x = Math.random() * 360 * (Math.PI / 180);
mesh.rotation.y = Math.random() * 360 * (Math.PI / 180);
mesh.scale.x = mesh.scale.y = mesh.scale.z = Math.random() * 150 + 100;
pastaPile.add(mesh);
pastaPile.meshes[ i ] = mesh;
}
pastaPile.position.y = 2500;
return pastaPile;
}
update = {
var mouseX = 0, mouseY = 0;
var clock = new THREE.Clock();
document.onmousemove = function(event) {
mouseX = ( event.clientX - (width / 2) ) * 10;
mouseY = ( event.clientY - (height / 2) ) * 10;
};
return function update() {
camera.position.x += ( 0.125 * mouseX - camera.position.x ) * .0125;
camera.position.y += ( - 0.125 * mouseY - camera.position.y ) * .0125;
camera.lookAt( scene.position );
var delta = clock.getDelta();
for ( var i = 0; i < maxPasta; i ++ ) {
var mesh = pastaPile.meshes[ i ];
mesh.rotation.x += spinSpeed * 0.8 * delta;
mesh.rotation.y += spinSpeed * delta;
mesh.position.y = ( mesh.position.y - 150 * delta ) % 8000;
}
}
}
function eachPasta(cb) {
for ( var i = 0; i < maxPasta; i ++ ) {
cb(pastaPile.meshes[i], i);
}
}
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