static void InvalidateBBNodesAbove(DObject dObj)
{
for (BBNode node = dObj.BbNode; node != null; node = node.parent)
{
node.bBox.Width = -1; //this will make the box empty
}
}
static BBNode BuildBBHierarchyUnderDNode(DNode dNode)
{
var bbNode = new BBNode();
bbNode.geometry = new Geometry(dNode);
bbNode.bBox = dNode.DrawingNode.BoundingBox;
return(bbNode);
}
static BBNode BuildBBHierarchyUnderDLabel(DLabel dLabel)
{
var bbNode = new BBNode();
bbNode.geometry = new Geometry(dLabel);
bbNode.bBox = dLabel.DrawingLabel.BoundingBox;
return(bbNode);
}
static void RebuildBBHierarchyUnderObject(DObject dObj)
{
BBNode oldNode = dObj.BbNode;
BBNode newNode = BuildBBHierarchyUnderDObject(dObj);
//now copy all fields, except the parent
oldNode.l = newNode.l;
oldNode.r = newNode.r;
oldNode.geometry = newNode.geometry;
oldNode.bBox = newNode.bBox;
}
void UpdateBoxes(BBNode bbNode)
{
if (bbNode.Box.IsEmpty)
{
if (bbNode.geometry != null)
{
bbNode.bBox = bbNode.geometry.Box;
}
else
{
UpdateBoxes(bbNode.l);
UpdateBoxes(bbNode.r);
bbNode.bBox = bbNode.l.Box;
bbNode.bBox.Add(bbNode.r.Box);
}
}
}
static void RebuildBBHierarchyUnderObject(DObject dObj)
{
BBNode oldNode = dObj.BbNode;
BBNode newNode = BuildBBHierarchyUnderDObject(dObj);
if (newNode != null)
{
//now copy all fields, except the parent
oldNode.left = newNode.left;
oldNode.right = newNode.right;
oldNode.geometry = newNode.geometry;
oldNode.bBox = newNode.bBox;
}
else
{
oldNode.bBox = Rectangle.CreateAnEmptyBox();
}
}
/// <summary>
/// first and count denine the segment needed to be split into two groups
/// </summary>
/// <param name="first"></param>
/// <param name="count"></param>
/// <returns></returns>
BBNode ProcessGroup(int first, int count)
{
if (count > 1)
{
int seed0;
BBox b0;
int seed1;
FindSeeds(first, count, out seed0, out b0, out seed1);
BBox b1;
int count0;
int count1;
SplitOnGroups(first, count, seed0, ref b0, seed1, out b1, out count0, out count1);
BBNode node = new BBNode();
node.bBox = new BBox(b0, b1);
node.left = ProcessGroup(first, count0);
node.left.parent = node;
node.right = ProcessGroup(first + count0, count1);
node.right.parent = node;
return(node);
}
if (count == 1)
{
Geometry geom = geometries[first] as Geometry;
if (geom != null)
{
BBNode node = new BBNode();
node.geometry = geom;
return(node);
}
DObject dObject = geometries[first] as DObject;
if (dObject != null)
{
return(dObject.BbNode);
}
}
return(null);
}
/// <summary>
/// first and count denine the segment needed to be split into two groups
/// </summary>
/// <param name="first"></param>
/// <param name="count"></param>
/// <returns></returns>
BBNode ProcessGroup(int first, int count) {
if (count > 1) {
int seed0;
BBox b0;
int seed1;
FindSeeds(first, count, out seed0, out b0, out seed1);
BBox b1;
int count0;
int count1;
SplitOnGroups(first, count, seed0, ref b0, seed1, out b1, out count0, out count1);
BBNode node=new BBNode();
node.bBox=new BBox(b0,b1);
node.left = ProcessGroup(first, count0);
node.left.parent=node;
node.right = ProcessGroup(first + count0, count1);
node.right.parent = node;
return node;
}
if (count == 1){
Geometry geom=geometries[first] as Geometry;
if (geom != null){
BBNode node=new BBNode();
node.geometry = geom;
return node;
}
DObject dObject = geometries[first] as DObject;
if (dObject != null)
return dObject.BbNode;
}
return null;
}
static BBNode BuildBBHierarchyUnderDNode(DNode dNode){
var bbNode = new BBNode();
bbNode.geometry = new Geometry(dNode);
bbNode.bBox = dNode.DrawingNode.BoundingBox;
return bbNode;
}
static BBNode BuildBBHierarchyUnderDLabel(DLabel dLabel){
var bbNode = new BBNode();
bbNode.geometry = new Geometry(dLabel);
bbNode.bBox = dLabel.DrawingLabel.BoundingBox;
return bbNode;
}
void UpdateBoxes(BBNode bbNode){
if (bbNode != null){
if (bbNode.Box.IsEmpty){
if (bbNode.geometry != null)
bbNode.bBox = bbNode.geometry.Box;
else{
UpdateBoxes(bbNode.left);
UpdateBoxes(bbNode.right);
bbNode.bBox = bbNode.left.Box;
bbNode.bBox.Add(bbNode.right.Box);
}
}
}
}
/// <summary>
///
/// </summary>
public void ClearBoundingBoxHierarchy()
{
bBNode = null;
}
void UnconditionalHit(MouseEventArgs args, EntityFilterDelegate filter)
{
System.Drawing.Point point = args != null
? new System.Drawing.Point(args.X, args.Y)
: DrawingPanel.PointToClient(MousePosition);
object old = selectedDObject;
if (bBNode == null && DGraph != null)
bBNode = DGraph.BBNode;
if (bBNode != null) {
Geometry geometry = bBNode.Hit(ScreenToSource(point), GetHitSlack(), filter);
selectedDObject = geometry == null ? null : geometry.dObject;
if (old != selectedDObject) {
SetSelectedObject(selectedDObject);
if (ObjectUnderMouseCursorChanged != null) {
var changedArgs = new ObjectUnderMouseCursorChangedEventArgs((IViewerObject) old,
selectedDObject);
ObjectUnderMouseCursorChanged(this, changedArgs);
}
}
}
}
void InitiateDrawing()
{
transformation = null;
CalcRects(null);
bBNode = null; //to initiate new calculation
panel.Invalidate();
}
internal void ProcessOnPaint(Graphics g, PrintPageEventArgs printPageEvenArgs)
{
if (PanelHeight < minimalSizeToDraw || PanelWidth < minimalSizeToDraw || DGraph == null)
return;
if (wasMinimized) {
wasMinimized = false;
panel.Invalidate();
}
if (OriginalGraph != null) {
CalcRects(printPageEvenArgs);
HandleViewInfoList();
if (printPageEvenArgs == null) {
g.FillRectangle(outsideAreaBrush, ClientRectangle);
g.FillRectangle(new SolidBrush(Draw.MsaglColorToDrawingColor(OriginalGraph.Attr.BackgroundColor)),
destRect);
}
using (Matrix m = CurrentTransform()) {
g.Transform = m;
g.Clip = new Region(SrcRect);
if (DGraph == null)
return;
double scale = CurrentScale;
foreach (IViewerObject viewerObject in Entities)
((DObject) viewerObject).UpdateRenderedBox();
DGraph.DrawGraph(g);
//some info is known only after the first drawing
if (bBNode == null && BuildHitTree
#if TEST_MSAGL
&& (
dGraph.DrawingGraph.DebugICurves == null
)
#endif
) {
DGraph.BuildBBHierarchy();
bBNode = DGraph.BbNode;
}
}
}
else
g.FillRectangle(Brushes.Gray, ClientRectangle);
//g.Transform.Reset();
}