three.js - 减小div的宽度时用raycaster进行的检测不完全准确三.js(v72)

Question

这是我计算交点的代码:

var wallWidth = 1200;
var wallHeight = 500;
var containerWidth=1200,containerHeight=700; //div 
//camera
camera = new THREE.PerspectiveCamera(60, containerWidth/containerHeight, 1, 10000);
camera.position.set(0, -wallHeight / 2 + 10, wallWidth);

这是我的功能，它与鼠标移动时的对象相交

function onDocumentMouseMove(event) {

        mouse.x = ( event.clientX / containerWidth ) * 2 - 1;
        mouse.y = -( event.clientY / containerHeight ) * 2 + 1;

        var deltaX = event.clientX - mouseX;
        var deltaY = event.clientY - mouseY;

        raycaster.setFromCamera(mouse, camera);
        var intersects = raycaster.intersectObjects(interactiveObj, true);

        if (intersects.length > 0) {
            //interaction with object
        }

        render();
    }

它工作正常，即当div的宽度为100％时，我在相交对象中获取值，但是当我将div的大小减小为80％时，则对象未正确拾取，即当鼠标离物体很远。

Answer 1

使用以下代码更改鼠标矢量
文档MouseMove(event){

    mouse.x = ( (event.clientX -renderer.domElement.offsetLeft) / renderer.domElement.width ) * 2 - 1;
    mouse.y = -( (event.clientY - renderer.domElement.offsetTop) / renderer.domElement.height ) * 2 + 1;

    var deltaX = event.clientX - mouseX;
    var deltaY = event.clientY - mouseY;

    raycaster.setFromCamera(mouse, camera);
    var intersects = raycaster.intersectObjects(interactiveObj, true);

上的函数
}