javascript - 将网格导入到 BABYLON.Mesh

Question

我在导入的网格体上使用 CSG 时遇到问题，这是我的代码:

var a; var b;

BABYLON.SceneLoader.ImportMesh("", "./public/Models/", "model1.stl", scene, function (newMeshes) {
    // Set the target of the camera to the first imported mesh
    camera.target = newMeshes[0];
    a = newMeshes[0];
});



BABYLON.SceneLoader.ImportMesh("", "./public/Models/", "model2.stl", scene, function (newMeshes) {
    // Set the target of the camera to the first imported mesh
    //camera.target = newMeshes[0];
    b = newMeshes[0];
});


var aCSG = BABYLON.CSG.FromMesh(a);
var bCSG = BABYLON.CSG.FromMesh(b);

“var a”和“var b”未定义，调试告诉我

 “BABYLON.CSG:网格类型错误，必须是 BABYLON.Mesh”

有什么方法可以将导入的网格转换为BABYLON.MESH吗？

非常感谢

Answer 1

这是因为 ImportMesh 是异步的，您必须在回调部分移动代码:

BABYLON.SceneLoader.ImportMesh("", "./public/Models/", "model1.stl", scene, function (newMeshes) {
    // Set the target of the camera to the first imported mesh
    camera.target = newMeshes[0];
    a = newMeshes[0];
BABYLON.SceneLoader.ImportMesh("", "./public/Models/", "model2.stl", scene, function (newMeshes) {
    // Set the target of the camera to the first imported mesh
    //camera.target = newMeshes[0];
    b = newMeshes[0];

var aCSG = BABYLON.CSG.FromMesh(a);
var bCSG = BABYLON.CSG.FromMesh(b);
});



});