public class DynamicFloatArray
{
  private int length;
  private int currentIndex;
  private int currentArrayIndex;
  private float[] currentArray;
  private ArrayList<float[]> arrays;
  
  public DynamicFloatArray()
  {
    this(16);
  }
  
  public DynamicFloatArray(int baseCapacity)
  {
    this.arrays = new ArrayList<float[]>();
    this.arrays.add(new float[baseCapacity]);
    this.reset();
  }
  
  public synchronized DynamicFloatArray adds(float value)
  {
    return this.add(value);
  }
  
  public DynamicFloatArray add(float value)
  {
    this.length++;
    this.currentIndex++;
    if (this.currentIndex >= this.currentArray.length)
    {
      this.currentIndex = 0;
      this.currentArrayIndex++;
      if (this.currentArrayIndex < this.arrays.size())
      {
        this.currentArray = this.arrays.get(this.currentArrayIndex);
      }
      else
      {
        int newCapacity = this.currentArray.length + (this.currentArray.length >> 1);
        this.currentArray = new float[newCapacity];
        this.arrays.add(this.currentArray);
      }
    }
    
    this.currentArray[this.currentIndex] = value;
    return this;
  }
  
  public final DynamicFloatArray reset()
  {
    this.length = 0;
    this.currentIndex = -1;
    this.currentArrayIndex = 0;
    this.currentArray = this.arrays.get(0);
    return this;
  }
  
  public DynamicFloatArray clear()
  {
    this.reset();
    this.arrays.clear();
    this.arrays.add(this.currentArray);
    return this;
  }
  
  public FloatBuffer toFloatBuffer()
  {
    return this.toFloatBuffer(null);
  }
  
  public FloatBuffer toFloatBuffer(FloatBuffer result)
  {
    if (result == null || result.remaining() < this.length)
    {
      result = BufferUtils.createFloatBuffer(this.length);
    }
    
    int currIdx = 0;
    int currArrIdx = 0;
    float[] currArr;
    
    while (currArrIdx < this.currentArrayIndex)
    {
      currArr = this.arrays.get(currArrIdx);
      result.put(currArr);
      currIdx += currArr.length;
      currArrIdx++;
    }
    
    currArr = this.arrays.get(currArrIdx);
    int remaining = this.length - currIdx;
    result.put(currArr, 0, remaining);

    return result;
  }

  public int getLength()
  {
    return this.length;
  } 
}