How to go about sorting an array of floats in ascending order...

Hi guys.

New problem for me: I am attempting something that probably isn't advised, but I am attempting to sort a list of floats (computed with Vector3.Distance()) in ascending order so I can pick the shortest one out and use it for a light probe system I am making.

Only problem is, I have run out of approaches, as it appears using System.Array.Sort() throws InvalidCastException, EVEN if the type it's comparing is float!

Any ideas? here's the IComparer code:

Code (JavaScript):

1. class UpdateGI implements IComparer
2. {
3.     function Compare(a : System.Object, b : System.Object) : int {
4.         var A : float = a;
5.         var B : float = b;
6.        
7.         if (A < B){
8.             return B;
9.         }
10.         else {
11.             return A;
12.         }
13.     }
14. }

 

Hi
you could try using arrays, Check this link. It appears javascript can manipulate arrays just like lists. Arrays are also much faster then lists. But need more maintenance work....
http://docs.unity3d.com/ScriptReference/Array.html

 

could also try something like these,
KDTree find nearest object:
http://unitycoder.com/blog/2013/03/26/kdtree-find-nearest-object/ (see comments for more similar ones)

 

Could that help?
http://stackoverflow.com/questions/722868/sorting-a-list-using-lambda-linq-to-objects

 

@mgear: will look into this. I did solve my issue in the end, and it was due to the compare function.
simply using array.sort() like this:

Code (csharp):

1. System.Array.Sort(<Array of floats to sort>);

Works, but it doesn't know what the value belongs to. again, thank you!

at everyone: thank you for all your help, guys!

 

You can also do System.Array.Sort<float>(<Array of floats to sort>). Saves implementing a custom comparer

 

@TwixEmma: I am actually doing that now, although a bit differently! Here is how I am doing it:
System.Array.Sort( <the array I wish to sort by distance>, <the array with distance values> );

BTW, you actually a girl? A female game dev's a rare breed around here... Also, if you are wondering why you asked this, it's the profile pic that got me...

 

Ok, this might be off-topic, but now I have a new problem: I can bake the cubemaps into the lightprobes, but because this is done in play mode, as soon as I exit, the cubemaps save, but they are no longer assigned to their probes!

Any help with a method of keeping them assigned on exit would be great!

 

Total off-topic and irrelevant, however to answer your question, yes I am a girl and no I'm not interested! <3

 

@TwixEmma:

WHOA! Sorry! I didn't mean it like that!

 

Have a look at LINQ OrderBy.

 

@A.Killingbeck: I actually fixed the problem somewhat. Again, it's doing a double sort, by using one array as a set of keys to sort another.

I also got the lighting system working a different way by using trigger colliders. And LINQ... where have I heard that before?

 

@A.Killingbeck: I actually fixed the problem somewhat. Again, it's doing a double sort, by using one array as a set of keys to sort another.

I also got the lighting system working a different way by using trigger colliders. And LINQ... where have I heard that before?