无法为OBJ创建BSP

Question

我正在尝试为Terrain模型创建轮廓线。为此，我将平面间隔放置，并尝试从网格中找到其交点。

我已提及this！用于使用缓冲区几何。

var obj = scene.getObjectByName('MyObj_s');

//set bounding box
var box = new THREE.Box3().setFromObject( obj );

var bmx = box.max;
var bmi = box.min;
var bsz = box.getSize();
var ctrin = Number($('#cntrin').val()); // equals = 1

if(isNaN(ctrin)){
    alert("Inavlid contour interval");
    return;
}

//set loops
for(var zi = bmi.z; zi < bmx.z; zi = zi + ctrin){

    var geometry = new THREE.PlaneGeometry( bsz.x, bsz.y, 32 );
    var material = new THREE.MeshBasicMaterial( {color: 0xffffff, side: THREE.DoubleSide, opacity: 0.1, transparent: true} );
    var plane = new THREE.Mesh( geometry, material );
    plane.position.x = (bmx.x + bmi.x) / 2;
    plane.position.y = (bmx.y + bmi.y) / 2;
    plane.position.z = zi;
    scene.add( plane );


    var planetoBSP = new THREE.Mesh( plane );

    var bsp2 = new ThreeBSP( planetoBSP );

    console.log(bsp2);


    var BoxMesh = new THREE.Mesh( obj );

    var bsp1 = new ThreeBSP( BoxMesh );

    console.log(bsp1);

    var geometry = bsp1.intersection(bsp2).toBufferGeometry();

    var mesh = new THREE.Mesh( geometry, material );


}//for

我要实现的只是模型上的轮廓线。但是BSP转换存在问题。