You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
147 lines
3.9 KiB
147 lines
3.9 KiB
<!-- Licensed under a BSD license. See license.html for license -->
|
|
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<meta charset="utf-8">
|
|
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
|
|
<title>Three.js - Cameras - Orthographic Canvas Top Left Origin</title>
|
|
<style>
|
|
html, body {
|
|
margin: 0;
|
|
height: 100%;
|
|
}
|
|
#c {
|
|
width: 100%;
|
|
height: 100%;
|
|
display: block;
|
|
}
|
|
.split {
|
|
position: absolute;
|
|
left: 0;
|
|
top: 0;
|
|
width: 100%;
|
|
height: 100%;
|
|
display: flex;
|
|
}
|
|
.split>div {
|
|
width: 100%;
|
|
height: 100%;
|
|
}
|
|
</style>
|
|
</head>
|
|
<body>
|
|
<canvas id="c"></canvas>
|
|
</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": {
|
|
"three": "../../build/three.module.js"
|
|
}
|
|
}
|
|
</script>
|
|
|
|
<script type="module">
|
|
import * as THREE from 'three';
|
|
|
|
function main() {
|
|
const canvas = document.querySelector('#c');
|
|
const renderer = new THREE.WebGLRenderer({canvas});
|
|
|
|
const left = 0;
|
|
const right = 300; // default canvas size
|
|
const top = 0;
|
|
const bottom = 150; // defautl canvas size
|
|
const near = -1;
|
|
const far = 1;
|
|
const camera = new THREE.OrthographicCamera(left, right, top, bottom, near, far);
|
|
camera.zoom = 1;
|
|
|
|
const scene = new THREE.Scene();
|
|
scene.background = new THREE.Color('black');
|
|
|
|
const loader = new THREE.TextureLoader();
|
|
const textures = [
|
|
loader.load('resources/images/flower-1.jpg'),
|
|
loader.load('resources/images/flower-2.jpg'),
|
|
loader.load('resources/images/flower-3.jpg'),
|
|
loader.load('resources/images/flower-4.jpg'),
|
|
loader.load('resources/images/flower-5.jpg'),
|
|
loader.load('resources/images/flower-6.jpg'),
|
|
];
|
|
const planeSize = 256;
|
|
const planeGeo = new THREE.PlaneGeometry(planeSize, planeSize);
|
|
const planes = textures.map((texture) => {
|
|
const planePivot = new THREE.Object3D();
|
|
scene.add(planePivot);
|
|
texture.magFilter = THREE.NearestFilter;
|
|
const planeMat = new THREE.MeshBasicMaterial({
|
|
map: texture,
|
|
side: THREE.DoubleSide,
|
|
});
|
|
const mesh = new THREE.Mesh(planeGeo, planeMat);
|
|
planePivot.add(mesh);
|
|
// move plane so top left corner is origin
|
|
mesh.position.set(planeSize / 2, planeSize / 2, 0);
|
|
return planePivot;
|
|
});
|
|
|
|
function resizeRendererToDisplaySize(renderer) {
|
|
const canvas = renderer.domElement;
|
|
const width = canvas.clientWidth;
|
|
const height = canvas.clientHeight;
|
|
const needResize = canvas.width !== width || canvas.height !== height;
|
|
if (needResize) {
|
|
renderer.setSize(width, height, false);
|
|
}
|
|
return needResize;
|
|
}
|
|
|
|
function render(time) {
|
|
time *= 0.001; // convert to seconds;
|
|
|
|
if (resizeRendererToDisplaySize(renderer)) {
|
|
camera.right = canvas.width;
|
|
camera.bottom = canvas.height;
|
|
camera.updateProjectionMatrix();
|
|
}
|
|
|
|
const distAcross = Math.max(20, canvas.width - planeSize);
|
|
const distDown = Math.max(20, canvas.height - planeSize);
|
|
|
|
// total distance to move across and back
|
|
const xRange = distAcross * 2;
|
|
const yRange = distDown * 2;
|
|
const speed = 180;
|
|
|
|
planes.forEach((plane, ndx) => {
|
|
// compute a unique time for each plane
|
|
const t = time * speed + ndx * 300;
|
|
|
|
// get a value between 0 and range
|
|
const xt = t % xRange;
|
|
const yt = t % yRange;
|
|
|
|
// set our position going forward if 0 to half of range
|
|
// and backward if half of range to range
|
|
const x = xt < distAcross ? xt : xRange - xt;
|
|
const y = yt < distDown ? yt : yRange - yt;
|
|
|
|
plane.position.set(x, y, 0);
|
|
});
|
|
|
|
renderer.render(scene, camera);
|
|
|
|
requestAnimationFrame(render);
|
|
}
|
|
|
|
requestAnimationFrame(render);
|
|
}
|
|
|
|
main();
|
|
</script>
|
|
</html>
|
|
|
|
|