private void Vertex_MouseDown(object sender, MouseEventArgs e)
{
Vertex v = (Vertex)((Control)sender).Tag;
if (add_vertex.Checked)
{
FinishedAction = true;
if (v.PreviousVertex != null || Polygons.Last().Count < 3) //wrong or not enough vertices
{
if (Polygons.Last().Contains(highlighted))
{
if (Polygons.Count > 1)
{
UpdateHighlighted(Polygons[Polygons.Count - 2][0]);
}
else
{
UpdateHighlighted(null);
}
}
foreach (var item in Polygons.Last())
{
item.PictureBox.Dispose();
}
Polygons.RemoveAt(Polygons.Count - 1);
ReloadCanvas();
return;
}
DrawLine(highlighted.PictureBox.Location.X + 4, highlighted.PictureBox.Location.Y + 4, ((Control)sender).Location.X + 4, ((Control)sender).Location.Y + 4, Color.Purple);
v.PreviousVertex = highlighted;
highlighted.NextVertex = v;
UpdateHighlighted(v);
MainCanvas.Refresh();
}
else if (delete_vertex.Checked)
{
DeleteVertex(v);
ReloadCanvas();
}
else if (move_vertex_edge.Checked)
{
MovingMode = 1;
UpdateHighlighted(v);
PrevoiusLocation = MainCanvas.PointToClient(Cursor.Position);
timer = new Timer();
timer.Interval = 10;
timer.Tick += Timer_Tick;
timer.Start();
}
}
private void Timer_Tick(object sender, EventArgs e)
{
if (MovingMode == 0 || highlighted == null)
{
return;
}
Point p = MainCanvas.PointToClient(Cursor.Position);
int dx = p.X - PrevoiusLocation.X;
int dy = p.Y - PrevoiusLocation.Y;
if (p.X < 0 || p.Y < 0 || p.X + 9 > MainCanvas.Width || p.Y + 9 > MainCanvas.Height)
{
timer.Stop();
MovingMode = 0;
}
PrevoiusLocation = new Point(PrevoiusLocation.X + dx, PrevoiusLocation.Y + dy);
highlighted.MoveVertex(dx, dy);
if (MovingMode == 1)
{
Vertex temp = highlighted.PreviousVertex;
while (temp.Relation != null && temp != highlighted)
{
temp.MoveVertex(dx, dy);
temp = temp.PreviousVertex;
}
if (temp != highlighted && highlighted.Relation != null)//not the full circle
{
temp = highlighted.NextVertex;
while (temp.Relation != null && temp != highlighted)
{
temp.MoveVertex(dx, dy);
temp = temp.NextVertex;
}
temp.MoveVertex(dx, dy);
}
}
if (MovingMode == 2) //moving whole edge=> highlighted.nextvertex too
{
highlighted.NextVertex.MoveVertex(dx, dy);
Vertex temp = highlighted.PreviousVertex;
while (temp.Relation != null && temp != highlighted.NextVertex)
{
temp.MoveVertex(dx, dy);
temp = temp.PreviousVertex;
}
if (temp != highlighted.NextVertex && highlighted.NextVertex.Relation != null)//not the full circle
{
temp = highlighted.NextVertex.NextVertex;
while (temp.Relation != null && temp != highlighted)
{
temp.MoveVertex(dx, dy);
temp = temp.NextVertex;
}
temp.MoveVertex(dx, dy);
}
}
else if (MovingMode == 3)
{
Vertex temp = highlighted.NextVertex;
while (temp != highlighted)
{
temp.MoveVertex(dx, dy);
temp = temp.NextVertex;
}
}
ReloadCanvas();
}