body{
overflow: hidden;
margin: 0;
}
console.clear();
import * as THREE from "https://cdn.skypack.dev/three@0.131.3";
import {OrbitControls} from "https://cdn.skypack.dev/three@0.131.3/examples/jsm/controls/OrbitControls.js";
import { Line2 } from 'https://cdn.skypack.dev/three@0.131.3/examples/jsm/lines/Line2.js';
import { LineMaterial } from 'https://cdn.skypack.dev/three@0.131.3/examples/jsm/lines/LineMaterial.js';
import { LineGeometry } from 'https://cdn.skypack.dev/three@0.131.3/examples/jsm/lines/LineGeometry.js';
import { GeometryUtils } from 'https://cdn.skypack.dev/three@0.131.3/examples/jsm/utils/GeometryUtils.js';
let scene = new THREE.Scene();
let camera = new THREE.PerspectiveCamera(45, innerWidth / innerHeight, 1, 100);
camera.position.set(5, 8, 13);
let renderer = new THREE.WebGLRenderer({antialias: true});
renderer.setSize(innerWidth, innerHeight);
renderer.setClearColor(0x404040);
document.body.appendChild(renderer.domElement);
let controls = new OrbitControls(camera, renderer.domElement);
let grid = new THREE.GridHelper(10, 10, 0x303030, 0x202020);
scene.add(grid);
let pts = [];
let clr = [];
let wdth = [];
let counter = 10;
for(let i = 0; i < counter; i++){
pts.push(
THREE.MathUtils.randFloat(-5, 5),
THREE.MathUtils.randFloat(-5, 5),
THREE.MathUtils.randFloat(-5, 5)
)
clr.push(Math.random(), Math.random(), Math.random());
if (i < counter - 1) wdth.push(THREE.MathUtils.randInt(2, 20));
}
console.log(pts.length, clr.length, wdth.length);
let geometry = new LineGeometry();
geometry.setPositions( pts );
geometry.setColors( clr );
geometry.setAttribute("linewidth", new THREE.InstancedBufferAttribute(new Float32Array(wdth), 1));
console.log(geometry);
let matLine = new LineMaterial( {
color: 0xffffff,
//linewidth: 5, // in pixels
vertexColors: true,
//resolution: // to be set by renderer, eventually
dashed: false,
alphaToCoverage: true,
onBeforeCompile: shader => {
shader.vertexShader = `
${shader.vertexShader}
`.replace(`uniform float linewidth;`, `attribute float linewidth;`);
//console.log(shader.vertexShader)
}
} );
let line = new Line2( geometry, matLine );
line.computeLineDistances();
line.scale.set( 1, 1, 1 );
scene.add( line );
renderer.setAnimationLoop( _ => {
matLine.resolution.set( innerWidth, innerHeight );
renderer.render(scene, camera);
});
This Pen doesn't use any external CSS resources.
This Pen doesn't use any external JavaScript resources.