/// <summary>
/// Checks whether the row can be continued, or is it better to start a new one.
/// </summary>
/// <param name="aRow">List of values</param>
/// <param name="aHead">The proposed new row member</param>
/// <param name="aWidth">Width of the current cell</param>
/// <returns>True if the row should be continued</returns>
private bool ContinueRow(List <TreeRectangle> aRow, TreeRectangle aChild, TreeRectangle aParent)
{
float width = aParent.MinSideLength();
float area = aChild.GetArea();
int count = aRow.Count;
if (count == 0)
{
return(true);
}
float widthSqr = width * width;
//First ratio
float sum = Sum(aRow);
float sumSqr = sum * sum;
float rMax = aRow[0].GetArea();
float rMin = aRow[count - 1].GetArea();
float max = (widthSqr * rMax) / sumSqr;
float min = sumSqr / (widthSqr * rMin);
float firstMax = Math.Max(max, min);
//Second ratio
sum += area;
sumSqr = sum * sum;
rMax = Math.Max(rMax, area);
rMin = Math.Min(rMin, area);
max = (widthSqr * rMax) / sumSqr;
min = sumSqr / (widthSqr * rMin);
float secondMax = Math.Max(max, min);
//does the aspect ratio improve or not?
return(firstMax >= secondMax);
}
/// <summary>
/// Update the data according to the available screenspace
/// </summary>
public void UpdateData()
{
float sum = iCurrentRootRectangle.GetArea();
float ratio = iPanel.Width / (float)iPanel.Height;
float height = (float)Math.Sqrt(sum / ratio);
float width = height * ratio;
iCurrentRootRectangle.SetSize(0, 0, width, height);
BuildTreeMap();
}
