The Line Renderer component takes an array of two or more points in 3D space, and draws a straight line between each one. You can use a Line Renderer to draw anything from a simple straight line to a complex spiral.
The line is always continuous; if you need to draw two or more completely separate lines, you should use multiple GameObjects, each with its own Line Renderer.
The Line Renderer does not render lines that have a width in pixels. It renders polygons that have a width in world units. The Line Renderer uses the same algorithm for line rendering as the Trail RendererA visual effect that lets you to make trails behind GameObjects in the Scene as they move. More info
See in Glossary.