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webgl_custom_attributes_lines.html
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webgl_custom_attributes_lines.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Verge3D webgl - custom attributes [lines]</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<link type="text/css" rel="stylesheet" href="main.css">
</head>
<body>
<div id="info"><a href="https://www.soft8soft.com/verge3d" target="_blank" rel="noopener">Verge3D</a> - custom attributes example</div>
<div id="container"></div>
<script type="x-shader/x-vertex" id="vertexshader">
uniform float amplitude;
attribute vec3 displacement;
attribute vec3 customColor;
varying vec3 vColor;
void main() {
vec3 newPosition = position + amplitude * displacement;
vColor = customColor;
gl_Position = projectionMatrix * modelViewMatrix * vec4(newPosition, 1.0);
}
</script>
<script type="x-shader/x-fragment" id="fragmentshader">
uniform vec3 color;
uniform float opacity;
varying vec3 vColor;
void main() {
gl_FragColor = vec4(vColor * color, opacity);
}
</script>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/[email protected]/dist/es-module-shims.js"></script>
<script type="importmap">
{
"imports": {
"v3d": "../build/v3d.module.js",
"v3d/addons/": "./jsm/"
}
}
</script>
<script type="module">
import * as v3d from 'v3d';
import { FontLoader } from 'v3d/addons/loaders/FontLoader.js';
import { TextGeometry } from 'v3d/addons/geometries/TextGeometry.js';
import Stats from 'v3d/addons/libs/stats.module.js';
let renderer, scene, camera, stats;
let line, uniforms;
const loader = new FontLoader();
loader.load('fonts/helvetiker_bold.typeface.json', function(font) {
init(font);
animate();
});
function init(font) {
camera = new v3d.PerspectiveCamera(30, window.innerWidth / window.innerHeight, 1, 10000);
camera.position.z = 400;
scene = new v3d.Scene();
scene.background = new v3d.Color(0x050505);
uniforms = {
amplitude: { value: 5.0 },
opacity: { value: 0.3 },
color: { value: new v3d.Color(0xffffff) }
};
const shaderMaterial = new v3d.ShaderMaterial({
uniforms: uniforms,
vertexShader: document.getElementById('vertexshader').textContent,
fragmentShader: document.getElementById('fragmentshader').textContent,
blending: v3d.AdditiveBlending,
depthTest: false,
transparent: true
});
const geometry = new TextGeometry('Verge3D', {
font: font,
size: 50,
height: 15,
curveSegments: 10,
bevelThickness: 5,
bevelSize: 1.5,
bevelEnabled: true,
bevelSegments: 10,
});
geometry.center();
const count = geometry.attributes.position.count;
const displacement = new v3d.Float32BufferAttribute(count * 3, 3);
geometry.setAttribute('displacement', displacement);
const customColor = new v3d.Float32BufferAttribute(count * 3, 3);
geometry.setAttribute('customColor', customColor);
const color = new v3d.Color(0xffffff);
for (let i = 0, l = customColor.count; i < l; i++) {
color.setHSL(i / l, 0.5, 0.5);
color.toArray(customColor.array, i * customColor.itemSize);
}
line = new v3d.Line(geometry, shaderMaterial);
line.rotation.x = 0.2;
scene.add(line);
renderer = new v3d.WebGLRenderer({ antialias: true });
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
const container = document.getElementById('container');
container.appendChild(renderer.domElement);
stats = new Stats();
container.appendChild(stats.dom);
//
window.addEventListener('resize', onWindowResize);
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function animate() {
requestAnimationFrame(animate);
render();
stats.update();
}
function render() {
const time = Date.now() * 0.001;
line.rotation.y = 0.25 * time;
uniforms.amplitude.value = Math.sin(0.5 * time);
uniforms.color.value.offsetHSL(0.0005, 0, 0);
const attributes = line.geometry.attributes;
const array = attributes.displacement.array;
for (let i = 0, l = array.length; i < l; i += 3) {
array[i] += 0.3 * (0.5 - Math.random());
array[i + 1] += 0.3 * (0.5 - Math.random());
array[i + 2] += 0.3 * (0.5 - Math.random());
}
attributes.displacement.needsUpdate = true;
renderer.render(scene, camera);
}
</script>
</body>
</html>