/// <summary>
/// Draw all the available labels onto the screen (drawArea).
/// </summary>
/// <param name="drawArea">The area we are drawing on</param>
public void Draw(DrawArea drawArea)
{
this.drawArea = drawArea;
if (!Properties.Settings.Default.showLabels)
{
return;
}
float closestDistanceSquared = float.MaxValue;
foreach (StorableLabel label in labels.Labels)
{
if (!dragging || !label.Equals(draggingLabelToReplace))
{
DrawLabel(label);
}
float distanceSquared = CloseToMouse.GetGroundDistanceSquared(label.WorldLocation, drawArea.MouseLocation);
if (distanceSquared < closestDistanceSquared)
{
closestDistanceSquared = distanceSquared;
closestToMouseLabel = label;
}
}
if (dragging)
{
DrawLabel(draggingLabel);
}
}
/// <summary>
/// Find the node in the path that is closest to the mouse,
/// </summary>
/// <param name="drawArea">Area that is being drawn upon and where we have a mouse location</param>
/// <param name="drawnPathData">The data structure with the information on the drawn path</param>
void FindActiveNode(DrawArea drawArea, DrawnPathData drawnPathData)
{
// Initial simplest implementation: find simply the closest and first.
float closestMouseDistanceSquared = float.MaxValue;
TrainpathNode closestNode = null;
foreach (TrainpathNode node in drawnPathData.DrawnNodes)
{
float distanceSquared = CloseToMouse.GetGroundDistanceSquared(node.Location, drawArea.MouseLocation);
// by using '<=' instead of '<' we should get the latest one, which overrides earlier ones
if (distanceSquared <= closestMouseDistanceSquared)
{
closestMouseDistanceSquared = distanceSquared;
closestNode = node;
}
}
activeNode = closestNode;
}
/// <summary>
/// Find the node in the path that is closest to the mouse,
/// </summary>
/// <param name="drawArea">Area that is being drawn upon and where we have a mouse location</param>
/// <param name="drawnPathData">The data structure with the information on the drawn path</param>
void FindActiveNode(DrawArea drawArea, DrawnPathData drawnPathData)
{
// Initial simplest implementation: find simply the closest and first.
float closestMouseDistanceSquared = float.MaxValue;
TrainpathNode closestNode = null;
foreach (TrainpathNode node in drawnPathData.DrawnNodes)
{
float distanceSquared = CloseToMouse.GetGroundDistanceSquared(node.Location, drawArea.MouseLocation);
// by using '<=' instead of '<' we should get the latest one, which overrides earlier ones
// To prevent numerical issues, we add a small number (smaller than two junctions would normally be together
if (distanceSquared <= closestMouseDistanceSquared + 0.1f)
{
closestMouseDistanceSquared = distanceSquared;
closestNode = node;
}
}
activeNode = closestNode;
}