/// <summary>
/// Returns the leaf Rectangle that contains the location
/// </summary>
/// <param name="location"></param>
/// <returns></returns>
public TreeRectangle LocationInsideLeafRectangle(Point location)
{
Vector2 lowerLeft = new Vector2(iLowerLeft.X * iScale.X, iLowerLeft.Y * iScale.Y);
Vector2 upperRight = new Vector2(iUpperRight.X * iScale.X, iUpperRight.Y * iScale.Y);
if (lowerLeft.X <= location.X && upperRight.X >= location.X &&
lowerLeft.Y <= location.Y && upperRight.Y >= location.Y)
{
if (iChildRectangles.Count == 0)
{
return(this);
}
else
{
foreach (TreeRectangle child in iChildRectangles)
{
TreeRectangle result = child.LocationInsideLeafRectangle(location);
// if found
if (result != null)
{
return(result);
}
}
}
}
return(null);
}
/// <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>
///
/// </summary>
/// <param name="location"></param>
public void IncreaseLevel(Point location)
{
// If already zoomed, quit
if (iZoomIn)
{
return;
}
TreeRectangle selectedRectangle = null;
foreach (TreeRectangle rectangle in iCurrentRootRectangle.GetChildren())
{
selectedRectangle = rectangle.LocationInsideRectangle(location);
if (selectedRectangle != null)
{
break;
}
}
if (selectedRectangle != null)
{
this.iCurrentRootRectangle = selectedRectangle;
}
/************************************************************************/
/* THE SAME AS IN SIZECHANGED!!! CREATE INVALIDATEDATA / INVALIDATEVIEW */
/************************************************************************/
UpdateData();
UpdateScale();
UpdateDrawingArea();
this.Invalidate();
iZoomIn = true;
}
/// <summary>
///
/// </summary>
/// <param name="location"></param>
/// <returns></returns>
private object OnHoverRectangle(Point location)
{
TreeRectangle rectangle = iCurrentRootRectangle.LocationInsideLeafRectangle(location);
if (rectangle != null)
{
return(rectangle.Data);
}
return(null);
}
/// <summary>
/// Creates the Tooltip Data
/// </summary>
/// <param name="aRectangle"></param>
/// <param name="aDataCube"></param>
/// <param name="aToolTipComponents"></param>
private void BuildToolTipData(TreeRectangle aRectangle, object[, ,] aDataCube,
List <GMSToolTipComponent> aToolTipComponents, int aRow)
{
string toolTip = "";
foreach (GMSToolTipComponent toolTipComponent in aToolTipComponents)
{
toolTip += toolTipComponent.iPrefix + ": "
+ aDataCube[toolTipComponent.iColumnIndex, aRow, 0]
+ " " + toolTipComponent.iSuffix
+ "\n";
}
aRectangle.Data = toolTip;
}
/// <summary>
///
/// </summary>
public void DecreaseLevel()
{
if (iZoomIn)
{
iZoomIn = false;
// switch to the original root
iCurrentRootRectangle = iRootRectangle;
UpdateData();
UpdateScale();
UpdateDrawingArea();
this.Invalidate();
}
}
/// <summary>
/// Parse the whole tree squerifying all the nodes
/// </summary>
/// <param name="aRectangle">current rectangle</param>
public void SquarifyTree(TreeRectangle aRectangle)
{
if (0 == aRectangle.GetChildren().Count)
{
return;
}
List <TreeRectangle> row = new List <TreeRectangle>();
List <TreeRectangle> copyOfChildren = new List <TreeRectangle>(aRectangle.GetChildren());
SquarifyLevel(copyOfChildren, row, aRectangle);
foreach (TreeRectangle rect in aRectangle.GetChildren())
{
SquarifyTree(rect);
}
}
/// <summary>
/// Initializes the TreeMap from a descending order object[,,] cube
/// </summary>
/// <param name="aDataCube">[columns, rows, 1]</param>
/// <param name="aQuantitativeDataIndex"></param>
/// <param name="aOrdinalDataIndex"></param>
/// <param name="aIdIndex"></param>
private void InitTreeMapFromDataCube(object[, ,] aDataCube, int aQuantitativeDataIndex,
int aOrdinalDataIndex, int aIdIndex, int aLeafNodeLabelIndex,
List <GMSToolTipComponent> aToolTipComponents)
{
iRootRectangle = new TreeRectangle(0.0F);
iCurrentRootRectangle = iRootRectangle;
string currentGroup = (string)aDataCube[aOrdinalDataIndex, 0, 0];
TreeRectangle currentNode = new TreeRectangle(0.0F);
currentNode.Label = currentGroup;
// iterate through the rows
for (int i = 0; i < aDataCube.GetLength(1); i++)
{
// if changing to a different group
if (currentGroup != (string)aDataCube[aOrdinalDataIndex, i, 0])
{
// only add the node to the root if any children have been created
if (currentNode.GetChildren().Count != 0)
{
iRootRectangle.AddRectangle(currentNode);
}
currentNode = new TreeRectangle(0.0F);
currentGroup = (string)aDataCube[aOrdinalDataIndex, i, 0];
currentNode.Label = currentGroup;
}
float area = Convert.ToSingle(aDataCube[aQuantitativeDataIndex, i, 0]);
// only add the node if the area is bigger or equal to one
if (area >= 1.0F)
{
TreeRectangle childRectangle = new TreeRectangle(area);
childRectangle.Id = Convert.ToInt32(aDataCube[aIdIndex, i, 0]);
// Tooltip Data and Label
BuildToolTipData(childRectangle, aDataCube, aToolTipComponents, i);
childRectangle.Label = (string)aDataCube[aLeafNodeLabelIndex, i, 0];
currentNode.AddRectangle(childRectangle);
}
}
iRootRectangle.AddRectangle(currentNode);
}
/// <summary>
/// Split the input values to the rectangle
/// </summary>
/// <param name="aChildren">input values(the tree) </param>
/// <param name="aRow">The current work row</param>
/// <param name="aWidth">The length of the current rectangle's max side</param>
public void SquarifyLevel(List <TreeRectangle> aChildren, List <TreeRectangle> aRow, TreeRectangle aRectangle)
{
if (0 == aChildren.Count)
{
aRectangle.LayOutRow(aRow);
return;
}
TreeRectangle head = aChildren[0];
if (ContinueRow(aRow, head, aRectangle))
{
aRow.Add(head);
aChildren.RemoveAt(0);
SquarifyLevel(aChildren, aRow, aRectangle);
}
else
{
aRectangle.LayOutRow(aRow);
SquarifyLevel(aChildren, new List <TreeRectangle>(), aRectangle);
}
}
/// <summary>
/// Add an existing rectangle to current rectangles childrens
/// </summary>
/// <param name="aRectangle">a rectangle to be added to the child list</param>
public void AddRectangle(TreeRectangle aRectangle)
{
iArea += aRectangle.iArea;
iChildRectangles.Add(aRectangle);
}