Autosize to multiples of nine (for iconmenu or something else)

I was in need of having my icon menu auto size itself to multiples of 9, and stumbled upon a fairly simple and powerful way to do this. Here it is:

Code:

public int autoSize(int original) {
return (original >= 0 ? ((original + 8) / 9) * 9 : (original / 9) * 9);
}

This will give you a multiple of 9 based on the number you feed it.
Enjoy

 

I had to do a pretty much the same thing for my own inventory menus for my own plugin. This is how I did it though:

Code:java

 
protected static int toNineDenom(int from)
{
    return ((((from / 9) + ((from % 9 == 0) ? 0 : 1)) * 9));
}
 

I don't understand in your method why you check if the original value is greater than or equal to zero and then if it isn't why you divide it by 9 and then multiply it by 9 when that will always just give you 0 or a negative number.

 

Code:

(int) Math.ceil(size / 9) * 9;

Code:

(int) Math.max(9, Math.round(size / 9) * 9);

Using a Math method.

 

Kazzababe yeah, that what I've been using.

 

Kazzababe chasechocolate
The Math method might cause a little extra overhead. I may be wrong though. A micro benchmark would be interesting. Not that it really matters considering how often the code would be run.

 

Code:

public int autoSize(int original) {
    while(original % 9 != 0)
        original++;
    return original;
}

I know this method is not better! But i think it's easier to understand

 

Since everybody else is doing it...

Code:java

 
private static int toNine(int notNine){
    return notNine + (9 - (notNine % 9));
}
 

Doesn't work for negative numbers