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webgl_clipping_intersection.html
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webgl_clipping_intersection.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Verge3D webgl - clipIntersection</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>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/es-module-shims@1.3.6/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 { GUI } from 'v3d/addons/libs/lil-gui.module.min.js';
import { OrbitControls } from 'v3d/addons/controls/OrbitControls.js';
let camera, scene, renderer;
const params = {
clipIntersection: true,
planeConstant: 0,
showHelpers: false
};
const clipPlanes = [
new v3d.Plane(new v3d.Vector3(1, 0, 0), 0),
new v3d.Plane(new v3d.Vector3(0, -1, 0), 0),
new v3d.Plane(new v3d.Vector3(0, 0, -1), 0)
];
init();
render();
function init() {
renderer = new v3d.WebGLRenderer({ antialias: true });
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.localClippingEnabled = true;
document.body.appendChild(renderer.domElement);
scene = new v3d.Scene();
camera = new v3d.PerspectiveCamera(40, window.innerWidth / window.innerHeight, 1, 200);
camera.position.set(- 1.5, 2.5, 3.0);
const controls = new OrbitControls(camera, renderer.domElement);
controls.addEventListener('change', render); // use only if there is no animation loop
controls.minDistance = 1;
controls.maxDistance = 10;
controls.enablePan = false;
const light = new v3d.HemisphereLight(0xffffff, 0x080808, 1.5);
light.position.set(- 1.25, 1, 1.25);
scene.add(light);
// const helper = new v3d.CameraHelper(light.shadow.camera);
// scene.add(helper);
//
const group = new v3d.Group();
for (let i = 1; i <= 30; i += 2) {
const geometry = new v3d.SphereGeometry(i / 30, 48, 24);
const material = new v3d.MeshLambertMaterial({
color: new v3d.Color().setHSL(Math.random(), 0.5, 0.5),
side: v3d.DoubleSide,
clippingPlanes: clipPlanes,
clipIntersection: params.clipIntersection
});
group.add(new v3d.Mesh(geometry, material));
}
scene.add(group);
// helpers
const helpers = new v3d.Group();
helpers.add(new v3d.PlaneHelper(clipPlanes[0], 2, 0xff0000));
helpers.add(new v3d.PlaneHelper(clipPlanes[1], 2, 0x00ff00));
helpers.add(new v3d.PlaneHelper(clipPlanes[2], 2, 0x0000ff));
helpers.visible = false;
scene.add(helpers);
// gui
const gui = new GUI();
gui.add(params, 'clipIntersection').name('clip intersection').onChange(function(value) {
const children = group.children;
for (let i = 0; i < children.length; i++) {
children[i].material.clipIntersection = value;
}
render();
});
gui.add(params, 'planeConstant', -1, 1).step(0.01).name('plane constant').onChange(function(value) {
for (let j = 0; j < clipPlanes.length; j ++) {
clipPlanes[j].constant = value;
}
render();
});
gui.add(params, 'showHelpers').name('show helpers').onChange(function(value) {
helpers.visible = value;
render();
});
//
window.addEventListener('resize', onWindowResize);
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
render();
}
function render() {
renderer.render(scene, camera);
}
</script>
</body>
</html>