How do I add an on-click event to a line rendered with the LineRenderer component?

Implement line renderer with click

I am new to Unity. I am implementing a project where I need to create lines based on coordinates. I have already done this, but I also have to be able to click on that line to execute a script. How can I achieve this?

This behaviour is not supported by the default LineRenderer component.

A way to do this would be to generate a 2D Polygon Collider programmatically based on the points used to draw your line.

You could do this by taking the width of the line, and determining the directional vector towards the next line point. At each point, you would take the perpendicular direction from the directional vector in both the 'up' and 'down' (aka just multiply the perpendicular vector by -1}, and then add those two new points to your Polygon Collider. With just two line points, that would form a rectangular collider. You can then write a script that allows you to 'click' on that rectangle using Raycasts from the Camera view.

Beware that the 2D Polygon Collider may require those points to appear in a certain order, meaning that it is possible you'd have to 'loop around' your entire line, aka taking all the positive perpendicular values first, starting from the start of your line to the end of your line, and then all the negative perpendicular values, starting at the end and moving to the start.

Also beware that this method may cause certain accuracy issues at sharp corners. If you want 100% accuracy, you may have to clean up the resulting point data.