发现这种方式确实能养成学习的习惯，至少可以让自己每天都进入一小段的专门的学习状态
每天一篇的阅读，同时看看 three 的源码实现
2021-3-18: 立项
2021-3-21: Basis（立项之后就鸽了两天，原神的时间得压缩了
2021-3-22: Primitives（浏览了一下所罗列的 Geometry
2021-3-23: Scenegraph
2021-3-24: Materials
2021-3-25: Textures
2021-3-29: Lights
2021-3-30: Cameras
2021-3-31: Shadows 30%
2021-4-3: Fog
2021-4-5: RenderTargets
2021-4-11: Rendering on Demand
2021-4-12: Debugging JavaScript
2021-4-13: Debugging GLSL
2021-4-14: Taking A Screenshot of the Canvas
2021-4-20: Optimize Lots of Objects\