code: protected void init (ExplodeInfo info, int x, int y, int width, int height)
      {
          _info = info;
          _ox = x;
          _oy = y;
          _owid = width;
          _ohei = height;
  
          _info.rvel = (float)((2.0f * Math.PI) * _info.rvel);
          _chunkcount = (_info.xchunk * _info.ychunk);
          _cxpos = new int[_chunkcount];
          _cypos = new int[_chunkcount];
          _sxvel = new float[_chunkcount];
          _syvel = new float[_chunkcount];
  
          // determine chunk dimensions
          _cwid = _owid / _info.xchunk;
          _chei = _ohei / _info.ychunk;
          _hcwid = _cwid / 2;
          _hchei = _chei / 2;
  
          // initialize all chunks
          for (int ii = 0; ii < _chunkcount; ii++) {
              // initialize chunk position
              int xpos = ii % _info.xchunk;
              int ypos = ii / _info.xchunk;
              _cxpos[ii] = _ox + (xpos * _cwid);
              _cypos[ii] = _oy + (ypos * _chei);
  
              // initialize chunk velocity
              _sxvel[ii] = RandomUtil.getFloat(_info.xvel) *
                  ((xpos < (_info.xchunk / 2)) ? -1.0f : 1.0f);
              _syvel[ii] = -(RandomUtil.getFloat(_info.yvel));
          }
  
          // initialize the chunk rotation angle
          _angle = 0.0f;
      }
docs: Initializes the animation with the attributes of the given explode info object.