/
ex8.js
136 lines (116 loc) · 4.04 KB
/
ex8.js
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/* TODO
* - LUT https://github.com/mrdoob/three.js/blob/master/examples/webgl_geometry_colors_lookuptable.html
* - add an adjustable opacity scaling factor
* - add min/max thresholding on data and display values
*/
import * as THREE from './js/three.module.js';
import { VRButton } from './jsm/webxr/VRButton.js';
import { OrbitControls } from './jsm/controls/OrbitControls.js';
import { GUI } from './jsm/libs/lil-gui.module.min.js';
import { ThreeTristogram } from './js/lib-ex8.js';
let camera;
let cameraGroup;
let scene;
let renderer;
let tristogram;
let oldImage;
const canvas = document.querySelector('canvas.webgl');
canvas.ondrop = dropHandler;
canvas.ondragover = dragOverHandler;
const guiSettings = {
image: '/images/wallaby_746_600x450.jpg',
background: 0x111111,
pointSize: 1,
};
try {
await init();
} catch (error) {
console.error(`Error running init(): ${error}`);
}
animate();
function guiInit() {
const gui = new GUI();
gui.add(guiSettings, 'image', {
glitchGray: '/images/glitch-art-phone-gray.jpg',
glitchRed: '/images/glitch-art-phone-r.jpg',
glitchRB: '/images/glitch-art-phone-rb.jpg',
glitchRGB: '/images/glitch-art-phone-rbg.jpg',
glitchR: '/images/glitch-art-phone-red.jpg',
godberGlitch: '/images/godber-glitch.jpg',
godber: '/images/godber.jpg',
rainbow: '/images/rainbow.png',
gray: '/images/grayscale.png',
blue: '/images/blue-black-gradient.png',
green: '/images/green-black-gradient.png',
red: '/images/red-black-gradient.png',
wallaby: '/images/wallaby_746_600x450.jpg',
});
gui.add(guiSettings, 'pointSize', 1, 20, 1);
gui.addColor(guiSettings, 'background');
}
async function init() {
cameraGroup = new THREE.Group();
renderer = new THREE.WebGLRenderer({ canvas });
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.xr.enabled = true;
document.body.appendChild(VRButton.createButton(renderer));
scene = new THREE.Scene();
scene.background = new THREE.Color(guiSettings.background);
camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 5000);
cameraGroup.add(camera);
cameraGroup.position.set(-200, 200, 450);
scene.add(cameraGroup);
// eslint-disable-next-line no-new
new OrbitControls(camera, renderer.domElement);
window.addEventListener('resize', onWindowResize);
guiInit();
// populate the tristogram
tristogram = new ThreeTristogram(scene, guiSettings);
oldImage = guiSettings.image;
await tristogram.load(guiSettings.image);
}
async function render() {
// Change Point Sizes
tristogram.pointsMaterial.size = guiSettings.pointSize;
// Change the Background Color
scene.background = new THREE.Color(guiSettings.background);
// FIXME: Kind of works, the old things need deleting.
if (guiSettings.image !== oldImage) {
console.log(`image changed to ${guiSettings.image}`);
oldImage = guiSettings.image;
tristogram.dispose();
await tristogram.load(guiSettings.image);
}
renderer.render(scene, camera);
}
function animate() {
renderer.setAnimationLoop(render);
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function dropHandler(ev) {
// Prevent default behavior (Prevent file from being opened)
ev.preventDefault();
if (ev.dataTransfer.items) {
// Use DataTransferItemList interface to access the file(s)
for (let i = 0; i < ev.dataTransfer.items.length; i++) {
// If dropped items aren't files, reject them
if (ev.dataTransfer.items[i].kind === 'file') {
const file = ev.dataTransfer.items[i].getAsFile();
guiSettings.image = URL.createObjectURL(file);
}
}
} else {
// Use DataTransfer interface to access the file(s)
for (let i = 0; i < ev.dataTransfer.files.length; i++) {
console.log(`... file[${i}].name = ${ev.dataTransfer.files[i].name}`);
}
}
}
function dragOverHandler(ev) {
// Prevent default behavior (Prevent file from being opened)
ev.preventDefault();
}