private void DrawGraph()
{
var rect = TinyGUI.BeginZoom(_eventProcessor.Scale);
TinyGUI.DrawGrid(Graph == null ? Vector2.zero : Graph.Offset, rect);
DrawGraph(false);
DrawGraph(true);
TinyGUI.EndZoom();
DrawMenu();
}
private bool ProcessMouseUp(Event @event)
{
if (@event.button == 1)
{
//End of mouse right click
if (Vector2.Distance(Zoomed(CurrentPosition), Zoomed(StartPosition)) < 1)
{
ProcessContextMenu(Zoomed(CurrentPosition));
}
return(false);
}
if (@event.button != 0)
{
return(false);
}
//End of mouse left click
if (NewEdge)
{
var @in = _graph.GetNodeUnder(Zoomed(CurrentPosition));
if (@in != null && @in.Type == TinyNodeType.Regular)
{
_graph.CreateEdge(_graph.GetNodeUnder(Zoomed(StartPosition)), @in);
}
else
{
ProcessContextMenu(Zoomed(CurrentPosition));
}
return(true);
}
if (!MultiSelectionOn)
{
return(false);
}
var selection = GetSelectionRect(Zoomed(StartPosition), Zoomed(CurrentPosition));
_selector.Add(_graph.Nodes.Where(x => selection.Overlaps(TinyGUI.GetNodeRect(x.Position))));
return(true);
}
private void OnGUI()
{
_buffer.OnUpdate(Graph);
_eventProcessor.Process(Graph);
DrawGraph();
if (_eventProcessor.MultiSelectionOn)
{
TinyGUI.DrawMultiSelectionRect(_eventProcessor.StartPosition, _eventProcessor.CurrentPosition);
}
if (_eventProcessor.NewEdge)
{
TinyGUI.DrawEdge(_eventProcessor.StartPosition, _eventProcessor.CurrentPosition, true);
}
if (GUI.changed)
{
Repaint();
}
}
private void DrawGraph(bool selected)
{
if (Graph == null)
{
return;
}
foreach (var node in Graph.Nodes.Where(x => selected == Selector.IsSelected(x)))
{
TinyGUI.DrawNode(node, selected, Graph.HasInEdge(node), Graph.HasOutEdge(node));
}
foreach (var edge in Graph.Edges.Where(x => selected == Selector.IsSelected(x)))
{
var @out = TinyGUI.GetOutRect(Graph.GetNode(edge.Out));
var @in = TinyGUI.GetInRect(Graph.GetNode(edge.In));
if (TinyGUI.DrawEdge(@out, @in, selected))
{
Selector.AddSingle(edge);
}
}
}
private bool ProcessMouseDown(Event @event)
{
if (@event.button == 1)
{
//Clean up selection on right mouse click
_selector.Clean();
// _newEdge = EditingEdge.Empty;
return(true);
}
if (@event.button != 0)
{
return(false);
}
var node = _graph.GetNodeUnder(Zoomed(CurrentPosition), _selector);
if (node == default)
{
_selector.Clean();
MultiSelectionOn = true;
return(false);
}
//Try Select node or edge on left mouse click
var outRect = TinyGUI.GetOutRect(node);
NewEdge = outRect.Contains(Zoomed(CurrentPosition));
if (NewEdge)
{
StartPosition = outRect.center / ZoomOffset;
}
_selector.AddSingle(node);
return(true);
}
public static TinyNode GetNodeUnder(this TinyGraph graph, Vector2 point, TinySelector selector = null)
{
var nodes = graph.Nodes.Where(x => TinyGUI.GetNodeRect(x.Position).Contains(point));
return(selector == null?nodes.FirstOrDefault() : nodes.OrderByDescending(selector.IsSelected).FirstOrDefault());
}