黄线会让权重平滑效果更好，但是布点一旦很多就会很消耗时间。
或者可以框选部分顶点让它们自动连接黄线。
希望布点mesh工具添加可以一键把所有虚线连接成为黄线的按键
在Spine中，黄线（边缘）确实可以影响网格的变形和权重平滑效果。当前，Spine并没有提供一键将所有虚线连接成黄线的功能。不过，您可以使用“创建”工具，通过点击并拖动顶点来手动创建边缘。对于大量顶点的网格，这可能会比较耗时。
关于自动连接部分顶点的功能，目前也没有直接的实现方式。您可以考虑在网格编辑模式下，通过选择并拖动顶点来创建边缘，或者使用“边缘循环选择”功能（shift+点击）来快速选择一条线上的多个边缘。
Gray edges are automatic. Yellow edges are triangulation constraints, they ensure an edge is between specific vertices. This can be necessary to get a specific triangulation so your mesh deforms as you need.
Why would you want to set yellow edges for all gray edges? There is no need to draw yellow edges at all if the gray edges are in the right place. The only time you need yellow edges is when the gray edges are not what you want.
Ah, I see. It would be better if we provide a way to smooth using distance. I've created an issue for that:
EsotericSoftware/spine-editor893