Javascript Three.js不可见平面不使用raycaster.intersectObject

我正在尝试创建可拖动对象，如本例所示：

应可拖动的对象位于数组objectMoverLines中

我已使用以下代码将平面添加到场景中：

plane = new THREE.Mesh(new THREE.PlaneBufferGeometry(500, 500, 8, 8), new THREE.MeshBasicMaterial({color: 0x248f24, alphaTest: 0}));
plane.visible = false;
scene.add(plane);

问题发生在onDocumentMouseDown功能下。由于某些原因，如果平面可见性设置为false（plane.visible=false），则在某个点上，将不会填充相交的sAbjOvers。但是，如果将平面的可见性设置为true，它将正常工作（但显然，这会导致一个巨大的平面挡住一切）：

另外，这是我目前在onDocumentMouseMove功能下拥有的：

function onDocumentMouseMove(event) {
    event.preventDefault();

    mouse.x = ( event.clientX / renderer.domElement.clientWidth ) * 2 - 1;
    mouse.y = - ( event.clientY / renderer.domElement.clientHeight ) * 2 + 1;

    // Get 3D vector from 3D mouse position using 'unproject' function
    var vector = new THREE.Vector3(mouse.x, mouse.y, 1);
    vector.unproject(camera);

    // Set the raycaster position
    raycaster.set( camera.position, vector.sub( camera.position ).normalize() );

    if (objmoverselection) {
        // Check the position where the plane is intersected
        var intersectsobjmovers = raycaster.intersectObject(plane);
        // Reposition the object based on the intersection point with the plane
        objmoverselection.position.copy(intersectsobjmovers[0].point.sub(offset));
    } else {
        // Update position of the plane if need
        var intersectsobjmovers = raycaster.intersectObjects(objectMoverLines);
        if (intersectsobjmovers.length > 0) {
            // var lookAtVector = new THREE.Vector3(0,0, -1);
            // lookAtVector.applyQuaternion(camera.quaternion);
            plane.position.copy(intersectsobjmovers[0].object.position);
            plane.lookAt(camera.position);
        }
    }

    requestAnimationFrame( render );
}

试试这个：

plane = new THREE.Mesh(new THREE.PlaneBufferGeometry(500, 500, 8, 8), 
   new THREE.MeshBasicMaterial( {
       color: 0x248f24, alphaTest: 0, visible: false
}));

scene.add(plane);

---

哦，我明白了。。。我必须在材质上将可见性设置为false，而不是网格。。。我早该知道的

plane = new THREE.Mesh(new THREE.PlaneBufferGeometry(500, 500, 8, 8), 
   new THREE.MeshBasicMaterial( {
       color: 0x248f24, alphaTest: 0, visible: false
}));

scene.add(plane);