Checking when to generate a chunk

I am making a game where everything is procedurally generated. Currently, I have chunks holding galaxies. I have a function to generate it and store it as a custom type (GalacticChunk):

Code (CSharp):

1. GalacticChunk GenerateGalacticChunk (Vector3 input_position)

And a function to instantiate the galaxy:

Code (CSharp):

1. void InstantiateGalaxy (GalacticChunk c_galaxy) {

The chunks are 500x500x500 units in size. How would I check when I am close enough to the edges to generate a new chunk?

Note: the first chunk has corners of (-250,-250,-250),(250,250,250)

 

You should make chunks array and calculate distance between every chunk and player.
Check out this tutorial :
http://forum.unity3d.com/threads/tutorial-procedural-meshes-and-voxel-terrain-c.198651/

 

How close is close enough?

 

Maybe 5 units?

 

Umm... every chunk? That's not really what I'm going for...

 

Can't you just do a range check to the "walls" of the chunks? That's just six point-plane distance calculations.

 

If you have a lot of empty grid spaces, try looking up octrees.