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script.js
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script.js
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let scene, camera, renderer, currentObject;
const rotationValues = document.getElementById('rotation-values');
init();
animate();
function init() {
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
camera.position.set(0, 0, 5);
renderer = new THREE.WebGLRenderer({ antialias: true });
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
const light = new THREE.DirectionalLight(0xffffff, 1);
light.position.set(5, 5, 5).normalize();
scene.add(light);
const ambientLight = new THREE.AmbientLight(0x404040);
scene.add(ambientLight);
window.addEventListener('resize', onWindowResize, false);
document.getElementById('upload').addEventListener('change', handleUpload);
document.getElementById('cube').addEventListener('click', () => addShape('cube'));
document.getElementById('quadrangularPrism').addEventListener('click', () => addShape('quadrangularPrism'));
document.getElementById('cone').addEventListener('click', () => addShape('cone'));
document.getElementById('rotateXPositive').addEventListener('click', () => rotateObject('X', Math.PI / 18));
document.getElementById('rotateXNegative').addEventListener('click', () => rotateObject('X', -Math.PI / 18));
document.getElementById('rotateYPositive').addEventListener('click', () => rotateObject('Y', Math.PI / 18));
document.getElementById('rotateYNegative').addEventListener('click', () => rotateObject('Y', -Math.PI / 18));
document.getElementById('rotateZPositive').addEventListener('click', () => rotateObject('Z', Math.PI / 18));
document.getElementById('rotateZNegative').addEventListener('click', () => rotateObject('Z', -Math.PI / 18));
document.getElementById('zoomIn').addEventListener('click', zoomIn);
document.getElementById('zoomOut').addEventListener('click', zoomOut);
}
function handleUpload(event) {
const file = event.target.files[0];
if (file) {
const reader = new FileReader();
reader.onload = function(e) {
const contents = e.target.result;
let loader;
if (file.name.toLowerCase().endsWith('.gltf') || file.name.toLowerCase().endsWith('.glb')) {
loader = new THREE.GLTFLoader();
} else if (file.name.toLowerCase().endsWith('.fbx')) {
loader = new THREE.FBXLoader();
} else if (file.name.toLowerCase().endsWith('.obj')) {
loader = new THREE.OBJLoader();
} else if (file.name.toLowerCase().endsWith('.stl')) {
loader = new THREE.STLLoader();
} else {
showErrorAlert('Unsupported file format.');
return;
}
loader.parse(contents, '', function(gltf) {
if (currentObject) {
scene.remove(currentObject);
}
currentObject = gltf.scene;
centerObject();
scene.add(currentObject);
updateRotationDisplay();
}, function (error) {
showErrorAlert('Error loading the file.');
});
};
reader.readAsArrayBuffer(file);
}
}
function addShape(type) {
if (currentObject) {
scene.remove(currentObject);
}
let geometry;
switch(type) {
case 'cube':
geometry = new THREE.BoxGeometry(1, 1, 1);
break;
case 'quadrangularPrism':
geometry = new THREE.BoxGeometry(1, 2, 1);
break;
case 'cone':
geometry = new THREE.ConeGeometry(1, 2, 8);
break;
default:
return;
}
const material = new THREE.MeshStandardMaterial({ color: 0x00ff00 });
currentObject = new THREE.Mesh(geometry, material);
centerObject();
scene.add(currentObject);
updateRotationDisplay();
}
function centerObject() {
if (currentObject) {
const boundingBox = new THREE.Box3().setFromObject(currentObject);
const center = boundingBox.getCenter(new THREE.Vector3());
currentObject.position.sub(center);
}
}
function zoomIn() {
camera.position.z -= 0.5;
}
function zoomOut() {
camera.position.z += 0.5;
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function animate() {
requestAnimationFrame(animate);
renderer.render(scene, camera);
updateRotationDisplay();
}
function updateRotationDisplay() {
if (currentObject) {
const { x, y, z } = currentObject.rotation;
rotationValues.innerText = `Rotation: X: ${THREE.MathUtils.radToDeg(x).toFixed(2)}, Y: ${THREE.MathUtils.radToDeg(y).toFixed(2)}, Z: ${THREE.MathUtils.radToDeg(z).toFixed(2)}`;
}
}
function rotateObject(axis, angle) {
switch (axis) {
case 'X':
currentObject.rotateX(angle);
break;
case 'Y':
currentObject.rotateY(angle);
break;
case 'Z':
currentObject.rotateZ(angle);
break;
default:
break;
}
updateRotationDisplay();
}
function showErrorAlert(message) {
Swal.fire({
icon: 'error',
title: 'Error',
text: message,
confirmButtonText: 'OK'
});
}