[libGDX] libGDX Array object

Newbie & Debugging Questions
#1

Hello everybody, I think I need some coaching with the handling of the libGDX Array. I play around for more understanding with the pathTest. Its a class which demonstrate how to use splines with libGDX. (by XOPPA)
Among other things there is an array like this:


Array<Path<Vector2>> paths = new Array<Path<Vector2>>();
paths.add(new Bezier<Vector2>(new Vector2(0,0), new Vector2(w, 0), new Vector2(0, h), new Vector2(w, h)));

For my part it could be also in this way:

 
Array<Vector2> vec = new Array<Vector>();
vec.add(new Vector2(110,110));

The first one is an array of a bezier pathes, the second one an array of vectors. The question is how can I reach and manipulate the values of the inner elements. Do I have to create everytime a complete new Vector2 object like this:

 vec.set(0, new Vector2(120f,120f);

or how can I manipulate only one value from the vector? Same question for the first construct above with the path array. How can I manipulate only one value from the path element in the array?

Sorry for cumbersome explanation…and thank you for your helpfulness

#2

Haven’t played with paths, but you could access an object in the array by using array.get(int index). Once you have the object, explore any fields or getters/setters it provides to manipulate it. I know Vector2 objects give you access to x and y fields.

e.g.

vec.get(0).x = 15

Hope that helps.

#3

There is a [icode]get()[/icode] method in the [icode]Array[/icode] class. This should change it.


vec.get(0).set(110, 110);

Or you can directly access the field [icode]items[/icode] which does the same thing.


vec.items[0].set(110, 110);

Hope this helps.

#4

Thank you at both of you. With the vector array its all oK now. Thank you. I think the path object couldn´t be manipulated in its vectorpoints later.