Is Linecast CPU intensive?

Unity Engine
1

Hello,

In general, is casting a Linecast intensive?

Could it be casted 100 times per frame easily? 1000?

Is Raycast less intensive?

I’m trying to figure out how heavily I can use it.

Thanks!

Nico.

2

Linecast = Raycast. How much you can use depends on your CPU…best thing is make a simple test and see what the results are.

–Eric

3

It would be slow. (I tried using raycasting to determine the corners of objects so I can cast shadows and it was too slow)
But as Eric says, just try it and see what happens.
Most likely though, you would have to find a better algorithm.

4

Thanks for your inputs.

I’ll give it a try.

Maybe I’ll use that approach to very specific situations, or try to find another workaround.

Nico.-

5

We are using a lot of Linecasts/Raycasts in our game. One important trick is not to cast every frame but only at defined intervalls.

6

Thanks! Yes, this is the way I’m heading.

Thanks for the tip.

Nico.-

7

Any chance you can mention exactly what you will be doing with the raycasts? There may be some ways to cut down the number of them you need to perform.