I have been exploring this demonstration:
utilizing the given code snippet:
let camera, scene, renderer;
let isUserInteracting = false,
lon = 0, lat = 0,
phi = 0, theta = 0,
onPointerDownPointerX = 0,
onPointerDownPointerY = 0,
onPointerDownLon = 0,
onPointerDownLat = 0;
const distance = 50;
init();
animate();
function init() {
const container = document.getElementById( 'container' );
camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 1, 1100 );
scene = new THREE.Scene();
const geometry = new THREE.SphereGeometry( 500, 60, 40 );
// invert the geometry on the x-axis so that all of the faces point inward
geometry.scale( - 1, 1, 1 );
const video = document.getElementById( 'video' );
video.play();
const texture = new THREE.VideoTexture( video );
const material = new THREE.MeshBasicMaterial( { map: texture } );
const mesh = new THREE.Mesh( geometry, material );
scene.add( mesh );
renderer = new THREE.WebGLRenderer();
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
document.addEventListener( 'pointerdown', onPointerDown );
document.addEventListener( 'pointermove', onPointerMove );
document.addEventListener( 'pointerup', onPointerUp );
//
window.addEventListener( 'resize', onWindowResize );
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function onPointerDown( event ) {
isUserInteracting = true;
onPointerDownPointerX = event.clientX;
onPointerDownPointerY = event.clientY;
onPointerDownLon = lon;
onPointerDownLat = lat;
}
function onPointerMove( event ) {
if ( isUserInteracting === true ) {
lon = ( onPointerDownPointerX - event.clientX ) * 0.1 + onPointerDownLon;
lat = ( onPointerDownPointerY - event.clientY ) * 0.1 + onPointerDownLat;
}
}
function onPointerUp() {
isUserInteracting = false;
}
function animate() {
requestAnimationFrame( animate );
update();
}
function update() {
lat = Math.max( - 85, Math.min( 85, lat ) );
phi = THREE.MathUtils.degToRad( 90 - lat );
theta = THREE.MathUtils.degToRad( lon );
camera.position.x = distance * Math.sin( phi ) * Math.cos( theta );
camera.position.y = distance * Math.cos( phi );
camera.position.z = distance * Math.sin( phi ) * Math.sin( theta );
camera.lookAt( 0, 0, 0 );
renderer.render( scene, camera );
}
Would there be an API available for the THREE.PerspectiveCamera that allows manual zooming in/out, panning left/right inside the scene, etc?
Is this functionality feasible with this setup?