Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Vectrosity Free.
Vectrosity v5.6.1 (Latest version)
“If possible, please buy the package to support the developer”
The ultimate professional line-drawing utility, continuously supported since 2010! Find out why Unity users call Vectrosity “great,” “wonderful,” and why buying it “was the smartest move I’ve made for a long time.”
You can do anything from emulating Debug.DrawRay at runtime to full 3D vector graphics games. A comprehensive array of functions makes it easy to draw curves, graphs, dotted lines, selection boxes, arrows, and lots more! Create lines in the editor, or with code.
Comes with complete documentation (one customer said, “your documentation was some of the best documentation I’ve seen for any product anywhere”), and dozens of examples.
Works well on any platform. Complete source code is included, or you can use the .dll (recommended). No garbage is generated except when creating new VectorLine objects.
Note: Vectrosity 5 requires Unity 5.4 or later. Packages which work with earlier versions of Unity are available upon request.
For the latest news and info, see the Vectrosity forum topic.