public override bool GetBool(object dataHolder)
{
if (dataHolder is INodeLabelLayout)
{
var node = layoutGraph.GetOwner((INodeLabelLayout)dataHolder);
if (layoutGraph is CopiedLayoutGraph)
{
bool[] selectedLabels = selectedLabelsAtItemProvider.Get(node) as bool[];
if (selectedLabels != null)
{
var nodeLabelLayouts = layoutGraph.GetLabelLayout(node);
for (int i = 0; i < nodeLabelLayouts.Length; i++)
{
var nodeLabelLayout = nodeLabelLayouts[i];
if (nodeLabelLayout == dataHolder && selectedLabels.Length > i)
{
return(selectedLabels[i]);
}
}
}
}
}
else if (dataHolder is IEdgeLabelLayout)
{
var edge = layoutGraph.GetOwner((IEdgeLabelLayout)dataHolder);
if (layoutGraph is CopiedLayoutGraph)
{
bool[] selectedLabels = selectedLabelsAtItemProvider.Get(edge) as bool[];
if (selectedLabels != null)
{
var edgeLabelLayouts = layoutGraph.GetLabelLayout(edge);
for (int i = 0; i < edgeLabelLayouts.Length; i++)
{
var edgeLabelLayout = edgeLabelLayouts[i];
if (edgeLabelLayout == dataHolder && selectedLabels.Length > i)
{
return(selectedLabels[i]);
}
}
}
}
}
return(false);
}
/// <inheritdoc/>
public virtual double GetProfit(LabelCandidate candidate)
{
if (candidate.Owner is IEdgeLabelLayout)
{
return(1);
}
double profit = 0;
INodeLabelLayout nl = (INodeLabelLayout)candidate.Owner;
var node = graph.GetOwner(nl);
var nodeLayout = graph.GetLayout(node);
var candidateLayout = candidate.BoundingBox;
var isLeft = candidateLayout.X + candidateLayout.Width / 2 < nodeLayout.X;
var isRight = candidateLayout.X + candidateLayout.Width / 2 > (nodeLayout.X + nodeLayout.Width);
var isTop = candidateLayout.Y + candidateLayout.Height / 2 < nodeLayout.Y;
var isBottom = candidateLayout.Y + candidateLayout.Height / 2 > (nodeLayout.Y + nodeLayout.Height);
var horizontalCenter = !isLeft && !isRight;
var verticalCenter = !isTop && !isBottom;
if (horizontalCenter && verticalCenter)
{
// candidate is in center -> don't use
return(0);
}
else if (horizontalCenter || verticalCenter)
{
profit = 0.95;
}
else
{
// diagonal candidates get a bit less profit
profit = 0.9;
}
foreach (var edge in node.Edges)
{
var portLocation = edge.Source == node?graph.GetSourcePointRel(edge) : graph.GetTargetPointRel(edge);
if (Math.Abs(portLocation.X) > Math.Abs(portLocation.Y))
{
// edge at left or right
if (portLocation.X < 0 && isLeft || portLocation.X > 0 && isRight)
{
if (isTop || isBottom)
{
profit -= 0.03;
}
else
{
// edge at same side as candidate
profit -= 0.2;
}
}
else if (horizontalCenter)
{
// candidate is close to the edge but not on the same side
profit -= 0.01;
}
}
else
{
// edge at top or bottom
if (portLocation.Y < 0 && isTop || portLocation.Y > 0 && isBottom)
{
if (isLeft || isRight)
{
profit -= 0.03;
}
else
{
profit -= 0.2;
}
}
else if (verticalCenter)
{
// candidate is close to the edge but not on the same side
profit -= 0.01;
}
}
}
return(Math.Max(0, profit));
}
/// <inheritdoc/>
public override bool GetBool(object dataHolder)
{
return(nonTreeEdgeDp.GetBool(graph.GetOwner((IEdgeLabelLayout)dataHolder)));
}
