void AddToCreatingNodes(Node endNode)
{
if (CreatingNodes.Count == 0)
{
CreatingNodes.Add(endNode);
return;
}
Node prevNode = CreatingNodes.Last();
Vector relativeVector = new Vector(endNode.X - prevNode.X, endNode.Y - prevNode.Y);
double relativeVectorLength = relativeVector.Length();
if (relativeVectorLength < 1e-6)
{
return;
}
relativeVector /= relativeVectorLength;
List <KeyValuePair <double, Node> > nodesOnLine = new List <KeyValuePair <double, Node> >();
foreach (Node node in Graph.Nodes)
{
Vector testVector = new Vector(node.X - prevNode.X, node.Y - prevNode.Y);
if (Math.Abs(testVector * relativeVector) < 1e-6)
{
double length = relativeVector ^ testVector;
if (length > 1e-6 && length < relativeVectorLength - 1e-6) // point on line
{
nodesOnLine.Add(new KeyValuePair <double, Node>(length, node));
}
}
}
nodesOnLine.Sort((x1, x2) => x1.Key.CompareTo(x2.Key));
foreach (KeyValuePair <double, Node> pair in nodesOnLine)
{
if (!CreatingNodes.Contains(pair.Value))
{
CreatingNodes.Add(pair.Value);
}
}
if (!CreatingNodes.Contains(endNode))
{
CreatingNodes.Add(endNode);
}
}
internal bool MouseDown(int x, int y, MouseButtons button, bool ctrlKey, bool altKey, bool shiftKey) // Return true if copy operation is performed
{
bool copyPerformed = false;
if (IsCreatingMode)
{
if (button == MouseButtons.Left) // Add
{
Node addNode;
if (HoveredObjects.Count > 0 && HoveredObjects[0] is Node node)
{
if (CreatingNodes.Contains(node))
{
if (CreatingNodes.Last() == node)
{
CreatingNodes.RemoveAt(CreatingNodes.Count - 1);
}
else if (CreatingNodes.First() == node)
{
AddToCreatingNodes(node);
SubmitCreatingNodes();
}
return(false);
}
addNode = node;
}
else
{
Vector pos = new Vector(x, y).MapFromScreen(Scale, Origin);
addNode = new Node(pos.X, pos.Y);
}
AddToCreatingNodes(addNode);
return(false);
}
else if (button == MouseButtons.Right) // Exit
{
SubmitCreatingNodes();
return(false);
}
}
if (altKey && PasteMode && SampleDecorator != null) // Create and paste
{
GraphEditManager.BeforePreformEdit(Graph, "Create Graph Elements");
Vector pos = new Vector(x, y).MapFromScreen(Scale, Origin);
Node addNode = new Node(pos.X, pos.Y);
addNode.Hidden = true;
addNode.Decorator = SampleDecorator.Clone() as Decorator;
if (!shiftKey && addNode.Decorator is TransformableDecorator transformableDecorator)
{
transformableDecorator.ExtraScale = (1 - Graph.MetaData.EdgeWidth) / Graph.MetaData.EdgeWidth;
}
GraphManipulation.AddShape(Graph, new List <Node>()
{
addNode
});
}
else if (HoveredObjects.Count > 0 && button != MouseButtons.Middle)
{
List <GraphElement> objectToKeep = new List <GraphElement>();
if (ctrlKey || shiftKey)
{
foreach (GraphElement selectedObject in SelectedObjects)
{
if (shiftKey || !HoveredObjects.Contains(selectedObject))
{
objectToKeep.Add(selectedObject);
}
}
}
foreach (GraphElement havoredObject in HoveredObjects)
{
if (!SelectedObjects.Contains(havoredObject))
{
objectToKeep.Add(havoredObject);
}
}
SelectedObjects.Clear();
if (ColorPaintingMode) // Paint mode
{
foreach (GraphElement element in objectToKeep)
{
Color TryApplyColor(Color oldColor, Color newColor, string hint)
{
if (oldColor != newColor)
{
GraphEditManager.BeforePreformEdit(Graph, string.Format(Resources.Lang.Undo_Paint, hint, newColor.ToString()));
}
return(newColor);
}
if (element is Node)
{
if (element.Decorator is PuzzleGraph.Decorators.StartDecorator startDecorator)
{
if (button == MouseButtons.Right) // Color picking
{
PaintingModeControl.Color = startDecorator.Color;
}
else // Apply color
{
startDecorator.Color = TryApplyColor(startDecorator.Color, PaintingModeControl.Color, "start point");
}
}
else if (element.Decorator is PuzzleGraph.Decorators.EndDecorator endDecorator)
{
if (button == MouseButtons.Right) // Color picking
{
PaintingModeControl.Color = endDecorator.Color;
}
else // Apply color
{
endDecorator.Color = TryApplyColor(endDecorator.Color, PaintingModeControl.Color, "end point");
}
}
}
else if (element is Face face)
{
if (button == MouseButtons.Right) // Color picking
{
PaintingModeControl.Color = face.GraphElementColor;
}
else // Apply color
{
face.GraphElementColor = TryApplyColor(face.GraphElementColor, PaintingModeControl.Color, "face");
}
}
else if (element is Edge edge)
{
if (button == MouseButtons.Right) // Color picking
{
PaintingModeControl.Color = edge.GraphElementColor;
}
else // Apply color
{
edge.GraphElementColor = TryApplyColor(edge.GraphElementColor, PaintingModeControl.Color, "edge");
}
}
}
}
else if (button == MouseButtons.Right) // Copy
{
if (objectToKeep.Count > 0)
{
if (ctrlKey && objectToKeep[0].Decorator is PuzzleGraph.Decorators.CombinedDecorator combinedDecorator) // Combine mode
{
ChooseSampleDecorator(combinedDecorator.Second, true);
objectToKeep[0].Decorator = combinedDecorator.First;
}
else
{
ChooseSampleDecorator(objectToKeep[0].Decorator, true);
}
copyPerformed = true;
}
}
else
{
if (!PasteMode) // Selection mode
{
SelectedObjects.AddRange(objectToKeep);
if (shiftKey)
{
nodesToMove = new List <Node>();
foreach (GraphElement element in SelectedObjects)
{
if (element is Node selectedNode)
{
nodesToMove.Add(selectedNode);
}
else if (element is Edge selectedEdge)
{
nodesToMove.Add(selectedEdge.Start);
nodesToMove.Add(selectedEdge.End);
}
else if (element is Face selectedFace)
{
nodesToMove.AddRange(selectedFace.Nodes);
}
}
if (nodesToMove.Count > 0)
{
GraphEditManager.BeforePreformEdit(Graph, "Move Nodes");
ElementMoveStartPosition = new Vector(x, y);
}
}
else
{
ElementMoveStartPosition = null;
}
}
else // Paste mode
{
foreach (GraphElement element in objectToKeep)
{
if (ctrlKey && element.Decorator != null) // Combine mode
{
CombineDecorators(SampleDecorator, element);
}
else
{
ApplyDecoratorToObject(SampleDecorator, element);
}
}
}
}
HoveredObjects.Clear();
if (SelectedObjects.Count > 0)
{
TetrisIndexToTemplateView(SelectedObjects[0].Decorator);
}
}
else
{
mouseDownPosition = new Vector(x, y);
IsDragging = true;
}
return(copyPerformed);
}