我按照MDN的说明检查边界框的交集。所以我写了代码：
const testBoxGeometry = new THREE.BoxGeometry(3, 3, 3);
const testBoxMaterial = new THREE.MeshBasicMaterial({color: 0x00ff00});
testBox = new THREE.Mesh(testBoxGeometry, testBoxMaterial);
testBox.geometry.computeBoundingBox();
testBoundingBox = new THREE.Box3(
testBox.geometry.boundingBox.min,
testBox.geometry.boundingBox.max
);
testBox.position.set(5, 0, 5);
scene.add(testBox);
const cameraBoxGeometry = new THREE.BoxGeometry(3, 3, 3);
const cameraBoxMaterial = new THREE.MeshBasicMaterial({color: 0x00ff00});
cameraBox = new THREE.Mesh(cameraBoxGeometry, cameraBoxMaterial);
cameraBox.geometry.computeBoundingBox();
cameraBoundingBox = new THREE.Box3(
cameraBox.geometry.boundingBox.min,
cameraBox.geometry.boundingBox.max
);
scene.add(cameraBox);
在我的动画功能中
if (testBoundingBox.intersectsBox(cameraBoundingBox)) {
console.log(`intersection`);
}
正如您在此屏幕快照中看到的那样，两个绿色框没有相交，但是它们被记录下来了……有人可能知道我做错了什么，或者将我推向了调试的方向？
编辑
如Hectate所述，我应该添加setFromObject（），这可以解决我的最初问题。但是，现在我遇到了一个新问题，因为我使用的第一个正方形代表了我的相机。我要创建一个环境，并检查播放器（模拟第一人称视角的相机）是否与该区域中的任何物体发生碰撞。我通过制作一个Object3D（）并添加相机和一个正方形来做到这一点。我将使正方形不可见，但将其用于边界以检测碰撞。
因为我翻译（我使用翻译来表现）播放器Object3D，所以我的原始位置保持不变，并且交集只能或不断发生或永远不会发生……关于如何解决这个问题的任何想法？
我用来导航播放器Object3D的代码：
检查是否按下了键
switch (e.key) {
case `z`:
moveForward = true;
break;
case `s`:
moveBackward = true;
break;
case `q`:
moveLeft = true;
break;
case `d`:
moveRight = true;
break;
}
在我的动画函数中：
if (moveForward) player.translateZ(- .05);
if (moveBackward) player.translateZ(.05);
if (moveLeft) player.translateX(- .05);
if (moveRight) player.translateX(.05);
编辑2
这是我完整的script.js：
import sets from './data/sets';
import ColladaLoader from 'three-collada-loader';
import BufferLoader from './modules/sound/BufferLoader';
import SpawnObject from './modules/render/SpawnObject';
import Controls from './modules/util/Controls';
import io from 'socket.io-client';
import {isEmpty} from 'lodash';
const OrbitControls = require(`./modules/util/OrbitControls`)(THREE);
const DeviceOrientationControls = require(`./modules/util/DeviceOrientationControls`);
// const PointerLockControls = require(`./modules/util/PointerLockControls`);
let scene, camera, renderer, VRcontrols, element, cameraBox, testBox, cameraBoundingBox, testBoundingBox;
let audioCtx, bufferLoader;
let socket, controlData;
let player, playerMesh;
let mobile;
let moveForward = false, moveBackward = false, moveLeft = false, moveRight = false;
let camX = 0;
const camY = 0;
let camZ = 2;
let mousedown = false;
const camSpeed = .1;
const notes = [];
let devices = [];
const collidableMeshList = [];
const mobilecheck = () => {
mobile = false;
(function(a) {if (/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(a) || /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0, 4))) mobile = true;})(navigator.userAgent || navigator.vendor || window.opera);
return mobile;
};
const init = () => {
mobilecheck();
socket = io(`/`);
socket.on(`init`, handleWSInit);
socket.on(`dataTransfer`, handleWSData);
window.AudioContext = window.AudioContext || window.webkitAudioContext;
if (!mobile) {
document.addEventListener(`keydown`, useArrowDown);
document.addEventListener(`keyup`, useArrowUp);
document.addEventListener(`mousedown`, () => mousedown = true);
document.addEventListener(`mouseup`, () => mousedown = false);
document.addEventListener(`mousemove`, e => {
if (mousedown) {
const rotateAngle = Math.PI / 4;
player.rotateY(rotateAngle * e.movementX * .1);
}
});
}
};
const handleWSInit = users => {
const {id: socketId} = socket;
users = users.map(u => {
if (u.socketId === socketId) u.isMe = true;
return u;
});
devices = users;
if (window.location.href.indexOf(`controls`) > - 1) {
const controls = new Controls(socket, devices);
console.log(controls);
return;
}
document.querySelector(`main`).classList.remove(`controls`);
loadAudio();
};
const loadAudio = () => {
audioCtx = new AudioContext();
bufferLoader = new BufferLoader(audioCtx);
bufferLoader.load(sets.drums)
.then(data => spawnObject(data));
initEnvironment();
};
const handleWSData = data => {
if (data !== undefined || data !== null || isEmpty(data)) controlData = data;
devices = devices.map(u => {
u.yo = false;
return u;
});
};
const spawnObject = data => {
for (let i = 0;i < 5;i ++) {
const bol = new SpawnObject(`object.dae`, audioCtx, data[0], scene, true);
notes.push(bol);
collidableMeshList.push((notes[0].scene.children[2]));
}
};
const initEnvironment = () => {
console.log(notes);
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera(
50, window.innerWidth / window.innerHeight,
1, 1000
);
renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
element = renderer.domElement;
document.body.appendChild(element);
//PLAYER
player = new THREE.Object3D();
const testBoxGeometry = new THREE.BoxGeometry(3, 3, 3);
const testBoxMaterial = new THREE.MeshBasicMaterial({color: 0x00ff00});
testBox = new THREE.Mesh(testBoxGeometry, testBoxMaterial);
testBox.geometry.computeBoundingBox();
const testBoxHelper = new THREE.BoxHelper(testBox, 0x0000ff);
testBoundingBox = new THREE.Box3(
testBox.geometry.boundingBox.min,
testBox.geometry.boundingBox.max
);
testBox.position.set(0, 0, 3);
testBoundingBox.setFromObject(testBox);
scene.add(testBox);
scene.add(testBoxHelper);
const cameraBoxGeometry = new THREE.BoxGeometry(3, 3, 3);
const cameraBoxMaterial = new THREE.MeshBasicMaterial({color: 0x00ff00});
cameraBox = new THREE.Mesh(cameraBoxGeometry, cameraBoxMaterial);
cameraBox.geometry.computeBoundingBox();
const cameraBoxHelper = new THREE.BoxHelper(cameraBox, 0x0000ff);
cameraBoundingBox = new THREE.Box3(
cameraBox.geometry.boundingBox.min,
cameraBox.geometry.boundingBox.max
);
player.add(cameraBoxHelper);
player.add(cameraBox);
player.add(camera);
player.velocity = new THREE.Vector3(0, 0, 0);
scene.add(player);
playerMesh = player.children[0];
camera.position.set(0, 0, 2); // first-player view
player.position.set(0, 0, 0);
player.rotation.y = - Math.PI / 2.0;
VRcontrols = mobile ? new DeviceOrientationControls(camera) : new OrbitControls(camera);
//LIGHTS
const light = new THREE.PointLight(0xFFFFFF);
light.position.set(0, 0, 9);
light.castShadow = true;
light.shadow.mapSize.width = 1024;
light.shadow.mapSize.height = 1024;
scene.add(light);
//FLOOR
const matFloor = new THREE.MeshPhongMaterial();
const geoFloor = new THREE.BoxGeometry(2000, 1, 2000);
const mshFloor = new THREE.Mesh(geoFloor, matFloor);
matFloor.color.set(0x212E39);
mshFloor.receiveShadow = true;
mshFloor.position.set(0, - 1, 0);
scene.add(mshFloor);
const loader = new ColladaLoader();
loader.load(`../assets/environment.dae`, collada => {
collada.scene.traverse(child => {
child.castShadow = true;
child.receiveShadow = true;
});
scene.add(collada.scene);
animate();
});
};
const moveCamera = () => {
// TODO: find movementX (0= no movement, 1-... = movement)
//dan -> player.rotateY(rotateAngle * e.movementX * .1);
const movementX = VRcontrols.object.rotation._y;
const rotateAngle = Math.PI / 4;
console.log(VRcontrols.deviceOrientation);
//player.rotateY(rotateAngle * movementX * .1);
// notes.forEach(i => {
// i.audioCtx.listener.positionX.value = camX + window.innerWidth / 2;
// i.audioCtx.listener.positionZ.value = camZ + 300;
// i.audioCtx.listener.positionY.value = camY + window.innerHeight / 2;
// });
//
switch (controlData) {
case `up`:
camZ -= camSpeed;
break;
case `down`:
camZ += camSpeed;
break;
case `left`:
camX -= camSpeed;
break;
case `right`:
camX += camSpeed;
break;
}
camera.position.set(camX, camY, camZ);
VRcontrols.update();
};
//CODE BENEATH NEEDS TO BE LESS DIRTY.
const useArrowDown = e => {
switch (e.key) {
case `z`:
moveForward = true;
break;
case `s`:
moveBackward = true;
break;
case `q`:
moveLeft = true;
break;
case `d`:
moveRight = true;
break;
}
};
const useArrowUp = e => {
switch (e.key) {
case `z`:
moveForward = false;
break;
case `s`:
moveBackward = false;
break;
case `q`:
moveLeft = false;
break;
case `d`:
moveRight = false;
break;
}
};
const animate = () => {
if (mobile) {
moveCamera();
}
if (moveForward) player.position.z -= .05;
if (moveBackward) player.position.z += .05;
if (moveLeft) player.position.x -= .05;
if (moveRight) player.position.x += .05;
renderer.shadowMap.enabled = true;
renderer.shadowMap.type = THREE.PCFSoftShadowMap;
renderer.gammaInput = true;
renderer.gammaOutput = true;
renderer.setClearColor(0xdddddd, 1);
renderer.render(scene, camera);
if (testBoundingBox.intersectsBox(cameraBoundingBox)) {
console.log(`intersection`);
}
requestAnimationFrame(animate);
};
init();
最佳答案
您链接的文章包括以下注释：
注意：boundingBox属性将Geometry本身作为参考，而不是Mesh。因此，在计算计算框时，将忽略应用于网格的任何变换，例如比例，位置等。
接下来，我使用setFromObject()设置了testBoundingBox的位置，它没有/没有按预期触发相交。这是有趣的代码，以及显示行为的jsfiddle。当然，更改框的位置并重新运行以查看交集触发。
https://jsfiddle.net/87wg5z27/122/
const testBoxGeometry = new THREE.BoxGeometry(3, 3, 3);
const testBoxMaterial = new THREE.MeshBasicMaterial({color: 0x00ff00});
testBox = new THREE.Mesh(testBoxGeometry, testBoxMaterial);
testBox.geometry.computeBoundingBox();
testBoundingBox = new THREE.Box3(
testBox.geometry.boundingBox.min,
testBox.geometry.boundingBox.max
);
testBox.position.set(5, 0, 5);
testBoundingBox.setFromObject(testBox); //I added this line
scene.add(testBox);
const cameraBoxGeometry = new THREE.BoxGeometry(3, 3, 3);
const cameraBoxMaterial = new THREE.MeshBasicMaterial({color: 0x00ff00});
cameraBox = new THREE.Mesh(cameraBoxGeometry, cameraBoxMaterial);
cameraBox.geometry.computeBoundingBox();
cameraBoundingBox = new THREE.Box3(
cameraBox.geometry.boundingBox.min,
cameraBox.geometry.boundingBox.max
);
scene.add(cameraBox);