Currently a single click selects the point cloud, and a second click selects the single point.

I suggest we instead use single-click to select a single point, and double-click to select the entire point cloud. This is similar to how clicking once in text will set the cursor and double-clicking will select the word. I think it is more intuitive.

It will also reduce flicker when moving the mouse over many points.

It also makes sense that hovering a point will show info about that single point, not the whole point cloud.