所以,我想做一个简单的地形编辑器。因此,在 mouseDown 上,我希望选定的面向上移动。相交效果很好,我尝试像这样修改几何:
var intersects2 = ray.intersectObjects([plane]);
if (intersects2.length > 0) {
var face = intersects2[0].face;
var obj1 = intersects2[0].object;
var geo = obj1.geometry;
geo.vertices[face.a].z += 50;
geo.vertices[100].z += 50;
geo.vertices[0].z += 50;
geo.computeVertexNormals();
geo.computeFaceNormals();
geo.__dirtyVertices = true;
geo.__dirtyNormals = true;
console.log(face.a);
}
控制台日志显示正确的顶点索引,但平面上没有任何移动。任何想法为什么?
飞机是这样创建的:
var planegeo = new THREE.PlaneGeometry( 500, 500, 10, 10 );
planegeo.dynamic = true;
plane = new THREE.Mesh( planegeo, new THREE.MeshPhongMaterial( { color: 0x99ff66 } ) );
plane.receiveShadow = true;
scene.add( plane );