ArrayList to Area

[Iwin]

I'm currently working on a area plotter.

Simply, you click on the screen.. it adds the location (X, Y, Z) into an ArrayList..

 

	ArrayList<Position> areaList = new ArrayList<>();

But to visually see the area.. you have to convert the arraylist into an Area

Example:

	Area chickenArea = new Area(new Position[] { new Position(3171, 3289, 0), new Position(3169, 3291, 0),
			new Position(3169, 3294, 0), new Position(3170, 3295, 0), new Position(3170, 3298, 0),
			new Position(3169, 3299, 0), new Position(3173, 3303, 0), new Position(3173, 3307, 0),
			new Position(3179, 3307, 0), new Position(3180, 3303, 0), new Position(3182, 3303, 0),
			new Position(3184, 3302, 0), new Position(3185, 3300, 0), new Position(3186, 3298, 0),
			new Position(3186, 3295, 0), new Position(3185, 3290, 0), new Position(3183, 3289, 0),
			new Position(3178, 3289, 0), new Position(3177, 3288, 0), new Position(3174, 3288, 0), });

If you just use the arraylist to draw a tile, it only plots those specific locations.

Any and all help is greatly appreciated

[Precise]

so you want to make the arraylist of positions into an array, to be passed into the instance of the area? if so, just do this and change the object type to Position instead of String : http://stackoverflow.com/questions/4042434/converting-arrayliststring-to-string-in-java

[Explv]

I'm currently working on a area plotter.

Simply, you click on the screen.. it adds the location (X, Y, Z) into an ArrayList..

 

	ArrayList<Position> areaList = new ArrayList<>();

But to visually see the area.. you have to convert the arraylist into an Area

Any and all help is greatly appreciated

List<Position> posList = new ArrayList<>();
Position[] positions = posList.toArray(new Position[posList.size()]);

Or

List<Position> posList = new ArrayList<>();
Position[] positions = posList.stream().toArray(Position[]::new);

Edited October 27, 2016 by Explv

[Iwin]

List<Position> posList = new ArrayList<>();
Position[] positions = posList.toArray(new Position[posList.size()]);

Or

List<Position> posList = new ArrayList<>();
Position[] positions = posList.stream().toArray(Position[]::new);

For some reason I get this result :|

 

[Explv]

For some reason I get this result :|

 

 

If you just want to create a rectangular area then you should use the:

Area(int x1, int y1, int x2, int y2)
Constructs a rectangular area using x and y coordinates from two separate positions.

Or

Area(Position southWest, Position northEast)
Constructs a rectangular area using two positions 

Constructors.

[Iwin]

Got it! Thank you very much!



 

			Position[] positions = posList.stream().toArray(Position[]::new);

			Area test = new Area(positions);
			
			for (Position p : test.getPositions()) {
				drawTile(this, g, p, Color.GREEN, Color.WHITE, "");
			}

Edited October 27, 2016 by Iwin

[Alek]

Every time you add or remove a position from that area, you should be reconstructing that Area using the new positions in the list (after converting to an array). Or is your issue converting from a list to an array?

[Iwin]

Every time you add or remove a position from that area, you should be reconstructing that Area using the new positions in the list (after converting to an array). Or is your issue converting from a list to an array?

My issue was converting:

 

ArrayList<Position> posList = new ArrayList<>();

To an Area.

but as posted above, my issue was solved. Unless this can be make more efficient (which is more than welcome)

[Alek]

Ah I see; nope you got some good suggestions. Good luck with your tool!