我如何找出从理光Theta S Dual FIsh Eye到Three.js r71 SphereGeometry的UV映射
我正在尝试使用Three.js r71重现three.js panaorama dualfisheye example。
我需要坚持使用r71，因为最终我将在基于Three.js r71的Autodesk Forge Viewer上使用此代码。
我取得了一些进展，但是在找出UV贴图时需要帮助。
如果您将此链接three.js panaorama dualfisheye example的结果与代码段进行比较，那肯定是一个问题。
var camera, scene, renderer;
var isUserInteracting = false,
onMouseDownMouseX = 0, onMouseDownMouseY = 0,
lon = 0, onMouseDownLon = 0,
lat = 0, onMouseDownLat = 0,
phi = 0, theta = 0,
distance = 500;
init();
animate();
function init() {
var container, mesh;
container = document.getElementById('container');
camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 1, 2000);
scene = new THREE.Scene();
// var geometry = new THREE.SphereBufferGeometry( 500, 60, 40 ).toNonIndexed();
var 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 );
geometry.applyMatrix(new THREE.Matrix4().makeScale(-1, 1, 1));
/*
// Remap UVs
// var normals = geometry.attributes.normal.array;
var normals = [];
geometry.faces.forEach(element => {
normals.push(element.normal)
});
var uvs = geometry.faceVertexUvs
// var uvs = geometry.attributes.uv.array;
for (var i = 0, l = normals.length / 3; i < l; i++) {
var x = normals[i * 3 + 0];
var y = normals[i * 3 + 1];
var z = normals[i * 3 + 2];
if (i < l / 2) {
var correction = (x == 0 && z == 0) ? 1 : (Math.acos(y) / Math.sqrt(x * x + z * z)) * (2 / Math.PI);
uvs[i * 2 + 0] = x * (404 / 1920) * correction + (447 / 1920);
uvs[i * 2 + 1] = z * (404 / 1080) * correction + (582 / 1080);
} else {
var correction = (x == 0 && z == 0) ? 1 : (Math.acos(- y) / Math.sqrt(x * x + z * z)) * (2 / Math.PI);
uvs[i * 2 + 0] = - x * (404 / 1920) * correction + (1460 / 1920);
uvs[i * 2 + 1] = z * (404 / 1080) * correction + (582 / 1080);
}
}
*/
// geometry.rotateZ( - Math.PI / 2 );
geometry.applyMatrix(new THREE.Matrix4().makeRotationZ(Math.PI / 2))
THREE.ImageUtils.crossOrigin = '';
var texture = THREE.ImageUtils.loadTexture('https://threejs.org/examples/textures/ricoh_theta_s.jpg');
this.texture = texture;
texture.format = THREE.RGBFormat;
var material = new THREE.MeshBasicMaterial({ map: texture });
material.map.repeat.set(1, 1);
material.map.offset.set(0, 0);
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('mousedown', onDocumentMouseDown, false);
document.addEventListener('mousemove', onDocumentMouseMove, false);
document.addEventListener('mouseup', onDocumentMouseUp, false);
document.addEventListener('wheel', onDocumentMouseWheel, false);
window.addEventListener('resize', onWindowResize, false);
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function onDocumentMouseDown(event) {
event.preventDefault();
isUserInteracting = true;
onPointerDownPointerX = event.clientX;
onPointerDownPointerY = event.clientY;
onPointerDownLon = lon;
onPointerDownLat = lat;
}
function onDocumentMouseMove(event) {
if (isUserInteracting === true) {
lon = (onPointerDownPointerX - event.clientX) * 0.1 + onPointerDownLon;
lat = (onPointerDownPointerY - event.clientY) * 0.1 + onPointerDownLat;
}
}
function onDocumentMouseUp(event) {
isUserInteracting = false;
}
function onDocumentMouseWheel(event) {
distance += event.deltaY * 0.05;
distance = THREE.Math.clamp(distance, 400, 1000);
}
function animate() {
requestAnimationFrame(animate);
update();
}
function update() {
if (isUserInteracting === false) {
lon += 0.1;
}
lat = Math.max(- 85, Math.min(85, lat));
phi = THREE.Math.degToRad(90 - lat);
theta = THREE.Math.degToRad(lon - 180);
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(scene.position);
renderer.render(scene, camera);
} body {
background-color: #000000;
margin: 0px;
overflow: hidden;
} <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/71/three.js"></script>
<div id="container"></div>
谢谢您的时间。
1 个答案:
答案 0 :(得分：0)
使用Geometry而不是BufferGeometry，法线是每面（face.vertexNormals），并且是Vector3的数组。 uv是Vector2s数组的数组。
someVector2 = geometry.faceVertexUvs[setNdx][faceNdx][vertexNdx]
var camera, scene, renderer;
var isUserInteracting = false,
onMouseDownMouseX = 0, onMouseDownMouseY = 0,
lon = 0, onMouseDownLon = 0,
lat = 0, onMouseDownLat = 0,
phi = 0, theta = 0,
distance = 500;
init();
animate();
function init() {
var container, mesh;
container = document.getElementById('container');
camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 1, 2000);
scene = new THREE.Scene();
var geometry = new THREE.SphereGeometry(500, 60, 40);
// invert the geometry on the x-axis so that all of the faces point inward
geometry.applyMatrix(new THREE.Matrix4().makeScale(-1, 1, 1));
// Remap UVs
var uvs = geometry.faceVertexUvs[0];
geometry.faces.forEach((face, ndx) => {
const faceUVs = uvs[ndx];
for (var i = 0; i < 3; ++i) {
const faceNormal = face.vertexNormals[i];
var x = faceNormal.x;
var y = faceNormal.y;
var z = faceNormal.z;
if (ndx < geometry.faces.length / 2) {
var correction = (x == 0 && z == 0) ? 1 : (Math.acos(y) / Math.sqrt(x * x + z * z)) * (2 / Math.PI);
faceUVs[i].x = x * (404 / 1920) * correction + (447 / 1920);
faceUVs[i].y = z * (404 / 1080) * correction + (582 / 1080);
} else {
var correction = (x == 0 && z == 0) ? 1 : (Math.acos(- y) / Math.sqrt(x * x + z * z)) * (2 / Math.PI);
faceUVs[i].x = - x * (404 / 1920) * correction + (1460 / 1920);
faceUVs[i].y = z * (404 / 1080) * correction + (582 / 1080);
}
}
});
geometry.applyMatrix(new THREE.Matrix4().makeRotationZ(Math.PI / 2))
THREE.ImageUtils.crossOrigin = '';
var texture = THREE.ImageUtils.loadTexture('https://threejs.org/examples/textures/ricoh_theta_s.jpg');
this.texture = texture;
texture.format = THREE.RGBFormat;
var material = new THREE.MeshBasicMaterial({ map: texture });
material.map.repeat.set(1, 1);
material.map.offset.set(0, 0);
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('mousedown', onDocumentMouseDown, false);
document.addEventListener('mousemove', onDocumentMouseMove, false);
document.addEventListener('mouseup', onDocumentMouseUp, false);
document.addEventListener('wheel', onDocumentMouseWheel, false);
window.addEventListener('resize', onWindowResize, false);
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function onDocumentMouseDown(event) {
event.preventDefault();
isUserInteracting = true;
onPointerDownPointerX = event.clientX;
onPointerDownPointerY = event.clientY;
onPointerDownLon = lon;
onPointerDownLat = lat;
}
function onDocumentMouseMove(event) {
if (isUserInteracting === true) {
lon = (onPointerDownPointerX - event.clientX) * 0.1 + onPointerDownLon;
lat = (onPointerDownPointerY - event.clientY) * 0.1 + onPointerDownLat;
}
}
function onDocumentMouseUp(event) {
isUserInteracting = false;
}
function onDocumentMouseWheel(event) {
distance += event.deltaY * 0.05;
distance = THREE.Math.clamp(distance, 400, 1000);
}
function animate() {
requestAnimationFrame(animate);
update();
}
function update() {
if (isUserInteracting === false) {
lon += 0.1;
}
lat = Math.max(- 85, Math.min(85, lat));
phi = THREE.Math.degToRad(90 - lat);
theta = THREE.Math.degToRad(lon - 180);
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(scene.position);
renderer.render(scene, camera);
}body {
background-color: #000000;
margin: 0px;
overflow: hidden;
}<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/71/three.js"></script>
<div id="container"></div>
让我指出，我是通过运行示例，然后在Chrome中打开devtools，放置断点并检查变量来解决这个问题的。
这是uvs
这是顶点法线
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