小编use*_*002的帖子

我使用OBJLoader加载模型,这是加载obj文件的代码:

        var loader = new THREE.OBJLoader();
        loader.load('obj/teeth/teeth4_5.obj', function(object) {
            model = object;
            scene.add( model );
            objects.push( model );
        });

我正试图用raycaster找到交叉点.我在three.js中的canvas_interactive_cubes示例(http://mrdoob.github.io/three.js/examples/canvas_interactive_cubes.html)中实现了我的代码.以下是查找交集的代码:

    function onDocumentMouseDown( event ){
        event.preventDefault();
        var mouseX = (event.clientX / window.innerWidth)*2-1;
        var mouseY = -(event.clientY /window.innerHeight)*2+1;
        var vector = new THREE.Vector3( mouseX, mouseY, 0.5 );
        projector.unprojectVector( vector, camera );
        var raycaster = new THREE.Raycaster( camera.position, vector.sub( camera.position ).normalize() );
        var intersects = raycaster.intersectObjects( scene.children );
        console.log( intersects[0].point);
    }

不幸的是,我无法获得交叉点的x,y,z坐标,无论我在哪里点击,它总是显示"TypeError:intersects [0]未定义".

我被困在这里好几天了.有人能告诉我一个在加载的obj文件上获取交集的方法吗？我感谢您的帮助.