Array MADNESS

Jeremy Green · 2013-03-18T17:08:30

Ok if I want to make a stack of arrays that i am going to update constantly in both element amount as well as individual elements what would be the best way of going about this? so I need a dynamic array of containers holding 16 element arrays that i am going to update constantly. also if i was going to use a dynamic array thats not a vector how would i go about updating the size of that array. but im not against using vectors either just incase some one wants to share an example of that. so i need to declare new array for each call of the render callback, populate that array then push it onto a stack of arrays and then do it again on that same render callback pass if i have more then one array that i have stacked. and i will be potentially adding to that stack every time new object is introduced to my scene. so renderCallbackLOOP(){ //create dynamic array of 16 element arrays //add newArray to my personal stack //dostuff to newArray //cycle to next newArray in my personal stack do stuff to it }

For Beginners

Started by pressgreen March 18, 2013 03:47 PM

10 comments, last by pressgreen 11 years, 1 month ago

BCullis

1,955

March 18, 2013 05:04 PM

Rawest form: create a vector of pointers, each pointer being the head of an individual array of data.

Somewhat better: create a vector of vectors, where the "outer layer" vector is the dynamically-sized group, comprised of 16-element vectors (instead of your 16-element arrays). The way you describe it in your latest reply is correct in that regard, in that you would take the 16 elements, push them into a vector, and then push THAT vector onto the "main" one.

OOD approach: wrap the arrays of information in a struct or class, and just create a vector of said classes.

My question still stands though: what is this being used for? It feels very unconventional, and there might be a more programmer-friendly approach that I could suggest if I knew what was going on.

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