Class IntArray

CodenameOne/src/com/codename1/maps/vector/IntArray.java:31–71

/// avoids that overhead, which matters when a single tile holds tens of
/// thousands of coordinates.
final class IntArray {

    private int[] data;
    private int size;

    IntArray() {
        this(16);
    }

    IntArray(int initialCapacity) {
        data = new int[initialCapacity < 4 ? 4 : initialCapacity];
    }

    void add(int value) {
        if (size == data.length) {
            int[] grown = new int[data.length * 2];
            System.arraycopy(data, 0, grown, 0, size);
            data = grown;
        }
        data[size++] = value;
    }

    int get(int index) {
        return data[index];
    }

    int size() {
        return size;
    }

    void clear() {
        size = 0;
    }

    /// A trimmed copy holding exactly [#size] elements.
    int[] toArray() {
        int[] out = new int[size];
        System.arraycopy(data, 0, out, 0, size);
        return out;
    }
}