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task5-pcd-load.html
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task5-pcd-load.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>My first three.js app</title>
<style>
body { margin: 0; }
</style>
</head>
<body>
<script type="module">
import * as THREE from "./three.js-dev/build/three.module.js"; // importing everything from the module - 'three.module.js''.
import { OrbitControls } from "./three.js-dev/examples/jsm/controls/OrbitControls.js"; // importing only single value, exported name OrbitControls should have been defined
// as 'class OrbitControls' and now visible in current scope (зона видимости).
import { PCDLoader } from "./three.js-dev/examples/jsm/loaders/PCDLoader.js"; // class PCDLoader
import * as BufferGeometryUtils from './three.js-dev/examples/jsm/utils/BufferGeometryUtils.js';
import { CinematicCamera } from './three.js-dev/examples/jsm/cameras/CinematicCamera.js';
let camera, scene, raycaster, renderer, stats, mouse;
let INTERSECTED; // crossed, пересеклись
//const radius = 8;
raycaster = new THREE.Raycaster();
let mesh, loader;
initialise();
function initialise() {
// Init camera
camera = new THREE.PerspectiveCamera(
30, //field of view in degrees
window.innerWidth / window.innerHeight, //aspect ratio - соотношение сторон
0.01, // near clip frame - the coordinate of starting point to view on Z axe for frame, z=-n
40 //far clip frame, z=-f, z=x=y=0 - view/eye point, frustum view - truncated pyramid - усеченная пирамида
);
camera.position.set(0,0,1);
// Init scene
scene = new THREE.Scene();
// Init renderer
renderer = new THREE.WebGLRenderer( { antialias: true } ); //antialias - whether to perform antialiasing (сглаживание). Default is false
renderer.setPixelRatio( window.devicePixelRatio ); // Sets device pixel ratio (соотношение). This is usually used for HiDPI device to prevent bluring output canvas.
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
renderer.outputEncoding = THREE.sRGBEncoding; //Defines the output encoding of the renderer. Default is THREE.LinearEncoding=3000, THREE.sRGBEncoding = 3001.
/*scene.add( new THREE.AmbientLight( 0xffffff, 0.3 ) );
const light = new THREE.DirectionalLight( 0xffff, 0.35 );
light.position.set( 1, 1, 1 ).normalize();
scene.add( light );*/
// controls
// Orbit controls allow the camera to orbit around a target.
const controls = new OrbitControls( //Constructor made initialing before using another methods of the class
camera, //The camera to be controlled.
renderer.domElement //The HTML element used for event listeners.
);
controls.addEventListener( //Registers an event handler (обработчик) for the specified type with the object.
'change', // type of event, which should be processed.
render // listener - function in JavaScript or EventListener, which will get notification if event have happened.
);
controls.minDistance = 0.5;
controls.maxDistance = 10;
controls.enablePan = false;
/*const geometry = new THREE.BoxGeometry( 100, 100, 100 );
const object = new THREE.Mesh( geometry, new THREE.MeshLambertMaterial( { color: 0xffff00 } ) );*/
loader = new PCDLoader();
loader.load( './three.js-dev/examples/models/pcd/binary/Zaghetto.pcd', function ( mesh ) { //works with function geometry, 'let geometry = new BufferGeometry();'
mesh.geometry.center(); // const geometry = new BufferGeometry(); center() - to center the geometry based on the bounding box.
mesh.geometry.rotateX(Math.PI); // Rotate the geometry about the X axis. This is typically done as a one time operation, and not during a loop.
// Use Object3D.rotation for typical real-time mesh rotation.
// Our object have been upside down (вверх ногами).
// rotateX ( radians : Float ).
// Math.PI = 180' = 3.14
mesh.material.color = new THREE.Color("white"); //.setHex(0xfff8f0);
scene.add(mesh);
render();
});
mouse = new THREE.Vector2();
document.addEventListener(//Registers an event handler (обработчик) for the specified type with the object.
"pointermove", //'mousemove', // type of event, which should be processed.
onMouseMove ); // listener - function in JavaScript or EventListener, which will get notification if event have happened.
//window.addEventListener( 'mousemove', onMouseMove, false );
window.addEventListener('resize', WindowResize);
// calculate_objects_intersecting_picking_ray (raycaster, mouse, camera);
// render();
// calculate_objects_intersecting_picking_ray (raycaster, mouse, camera);
// render();
//window.requestAnimationFrame(render);
}
function WindowResize(){
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function onMouseMove( event ) {
// calculate mouse position in normalized device coordinates
// (-1 to +1) for both components
// event.preventDefault();
mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
calculate_objects_intersecting_picking_ray (raycaster, mouse, camera);
render();
//onMouseMove(event);
}
function render() {
renderer.render( scene, camera );
}
function calculate_objects_intersecting_picking_ray (raycaster, mouse, camera) {
// camera.position.x = 8; //radius; //* Math.sin( THREE.MathUtils.degToRad( theta ) );
// camera.position.y = 8; //radius; //* Math.sin( THREE.MathUtils.degToRad( theta ) );
// camera.position.z = 8; //radius; //* Math.cos( THREE.MathUtils.degToRad( theta ) );
console.log (camera.position.y);
//theta += 0.1;
camera.lookAt( scene.position );
camera.updateMatrixWorld();
raycaster.setFromCamera( //method from Raycaster class, setFromCamera ( coords : Vector2, camera : Camera ) : null
mouse, // coords — 2D coordinates of the mouse, in normalized device coordinates ---X and Y should be [-1;1].
camera // camera — camera from which the ray should originate
);
const points = scene.getObjectByName( 'Zaghetto.pcd' ); //name -- String to match to the children's Object3D.name property.
// Searches through an object and its children, starting with the object itself, and returns the first with a matching name.
// Note that for most objects the name is an empty string by default. You will have to set it manually to make use of this method.
const intersects = raycaster.intersectObjects( // method from Raycaster class,( object : Object3D) : Array, Array = intersects
scene.children // points // // .children : Object3D, array with object's children.
);
if ( intersects.length > 0 ) { // method 'length' for the arrays, to get know the length.
if (INTERSECTED != intersects[0].object) {
if (INTERSECTED) {INTERSECTED.material.emissive.setHex(INTERSECTED.currentHex); // Material - abstract class for materials. Material() creates a generic (общий) material.
console.log("888888");}
INTERSECTED = intersects[0].object;
INTERSECTED.currentHex = INTERSECTED.material.color.getHex(); // : Integer. Returns the hexadecimal value of this color. Internal (внутренняя) function for color conversion (преобразование).
INTERSECTED.material.color.setHex(0xff0000);
}
}
//else if (INTERSECTED !== null) {
else {
console.log(INTERSECTED);
if ( INTERSECTED ) {
INTERSECTED.material.color.setHex (INTERSECTED.currentHex); //color = new THREE.Color("yellow");
console.log("22");
// console.log(INTERSECTED);
}
//INTERSECTED.material.emissive.setHex( INTERSECTED.currentHex );
INTERSECTED = null;
}
//calculate_objects_intersecting_picking_ray (raycaster, mouse, camera);
render();
}
</script>
</body>
</html>