/// <summary>
/// Some very long helper functions which holds the relations between children, parent, and sibling positions
/// </summary>
public static int LookupChildCover(Point p, CoverNode parent_node)
{
int childNum = -1;
if (p.X < parent_node.GetBounds().rect_center.X)
{
if (p.Y < parent_node.GetBounds().rect_center.Y)
{
childNum = 0;
}
else
{
childNum = 2;
}
}
else
{
if (p.Y < parent_node.GetBounds().rect_center.Y)
{
childNum = 1;
}
else
{
childNum = 3;
}
}
return(childNum);
}
private void btnSetExtent_Click(object sender, EventArgs e)
{
if (rdbPartition.Checked)
{
type_partition = true;
}
else
{
type_partition = false;
}
int size = Convert.ToInt32(tbWidth.Text);
int capacity = Convert.ToInt32(tbCapacity.Text);
double pValue = Convert.ToDouble(tb_pValue.Text);
bool overflow = chbOverFlow.Checked;
canvas_size = size;
CreationMode mode;
if (cmbCreationMode.SelectedIndex == 0)
{
mode = CreationMode.LAZY;
}
else
{
mode = CreationMode.ALL_AT_ONCE;
}
root_node = new PartitionNode(0, size, new Point(size / 2, size / 2), capacity);
cover_root = new CoverNode(size, new Point(size / 2, size / 2), capacity, null, pValue);
if (type_partition)
{
rect_database_partition = new FieldTreeStructure <PartitionNode>(size, size, root_node, root_node.capacity, overflow, mode);
}
else
{
rect_database_cover = new FieldTreeStructure <CoverNode>(size, size, cover_root, cover_root.capacity, overflow, mode);
}
dbCanvas.SetupCanvas(size, size);
UpdateCanvasBounds();
}