Camera.current.ScreenPointToRay()返回与鼠标单击位置不同的命中点

Question

我有以下代码，它试图将一个gameObject放在场景视图上鼠标左键单击的位置。代码片段来自自定义编辑器窗口。我不明白为什么当我点击的时候，游戏对象会被实例化到我点击的地方的左边和上方。

 void CustomUpdate(UnityEditor.SceneView sv)
{
    Event e = Event.current;

    if ((e.type == EventType.MouseDrag || e.type == EventType.MouseDown) && e.button == 0)
    {
        if (PlaceObject)
        {
            RaycastHit hit;
            Tools.current = Tool.Move;
            if (Physics.Raycast(Camera.current.ScreenPointToRay(new Vector3(e.mousePosition.x, Camera.current.pixelHeight - e.mousePosition.y, 0)),
                out hit, Mathf.Infinity, ~LayerMask.NameToLayer("Terrain")))
            {
                GameObject tee = AssetDatabase.LoadAssetAtPath("Assets/FSX Course Importer/Default Objects/Markers/TeeMarker/TeeMarker.prefab", typeof(GameObject)) as GameObject;
                GameObject go = Instantiate(tee) as GameObject;
                go.transform.position = hit.point;
                go.transform.SetParent(TeeParent);
                go.name = "Hole:" + HoleNumber + " Type:" + TeeType;
                e.Use();
                Undo.RegisterCreatedObjectUndo(go, "Undo placed Tee");
            }

            EditorWindow.GetWindow(typeof(CreateTeeWindow)).Close();
        }
    }
}

Answer 1

您必须将Physics.Raycast(Camera.current.ScreenPointToRay(new Vector3(e.mousePosition.x, Camera.current.pixelHeight - e.mousePosition.y, 0)替换为

Physics.Raycast(Camera.current.ScreenPointToRay(Input.mousePosition))

而Unity会照顾所有的黑客帝国

Answer 2

如果任何人在内部和编辑器窗口脚本中工作时遇到类似问题，以下是更新后的代码

Ray ray = HandleUtility.GUIPointToWorldRay(Event.current.mousePosition);
            RaycastHit hit;
            if (Physics.Raycast(ray, out hit, Mathf.Infinity, ~LayerMask.NameToLayer("Terrain")))
            {
                //code to place object at hit.point goes here
            }