“简化曲线”工具适用于单个选定的曲线物体。它基于原始曲线生成新曲线。设置 Distance Error 阈值越高，移除的控制点就越多。
Merge by Distance tool glues nearby points on a single Bézier curve. In fact it is an analogue of the usual Merge by Distance on a mesh, but for curves. Unlike the mesh one, it does not connect the points from different parts of the curves, even if they are on the ends of the two curves. To glue such points, you must first connect them with Make Segment.
The Merge By Distance and Curve Simplify buttons are located in thein curve Edit Mode.
Simplify curves in the 3D Viewport, and Dope Sheet, merge by distance in 3D Viewport.
testscreenings, Michael Soluyanov