1. 认识MRTK

2. 创建第一个MRTK项目—学习MRTK SDK的导入和打包发布

3.1 创建用户界面并配置MRTK—学习更改默认配置（clone default profiles）
3.2 MRTK内置编辑器手势操作

4. 使用Solvers创建动态内容—使创建的物体始终位于视野中心或随手的位置而改变
Solvers are components that facilitate the means of calculating an object’s position & orientation according to a predefine algorithm. An example may be placing an object on the surface the user’s gaze raycast currently hits.
Furthermore, the Solver system deterministically defines an order of operations for these transform calculations as there is no reliable way to specify to Unity the update order for components.
Solvers offer a range of behaviors to attach objects to other objects or systems. One other example would be a tag-along object that hovers in front of the user (based on the camera). A solver could also be attached to a controller and an object to make the object tag-along the controller. All solvers can be safely stacked, for example a tag-along behavior + surface magnetism + momentum.