void edge_MouseDown(object sender, MouseButtonEventArgs e)
{
if (MeshViewMode != ViewMode.Navigation)
{
return;
}
DCELHalfEdge2D edge = sender as DCELHalfEdge2D;
UpdateEdge(edge);
}
private void TranslateCoords(DCELHalfEdge2D edge)
{
double theta = Math.Atan2(
edge.Origin.Coordinates.Y - edge.Next.Origin.Coordinates.Y,
edge.Origin.Coordinates.X - edge.Next.Origin.Coordinates.X);
double sint = Math.Sin(theta);
double cost = Math.Cos(theta);
edge.X1 = edge.Origin.Coordinates.X - (distance * sint);
edge.Y1 = edge.Origin.Coordinates.Y + (distance * cost);
edge.X2 = edge.Next.Origin.Coordinates.X + (-distance * sint);
edge.Y2 = edge.Next.Origin.Coordinates.Y + (distance * cost);
}
void face_MouseLeave(object sender, MouseEventArgs e)
{
var face = sender as DCEL2D.DCELFace2D;
switch (MeshViewMode)
{
case ViewMode.Geometry:
break;
case ViewMode.Wireframe:
break;
case ViewMode.DCELStructure:
face.Fill = Brushes.Black;
face.Edge.Stroke = Brushes.Black;
break;
case ViewMode.FaceNeighbours:
face.Fill = Brushes.Black;
foreach (var item in buffer)
{
DCELFace2D f = item as DCELFace2D;
f.Fill = Brushes.Black;
}
buffer.Clear();
break;
case ViewMode.FaceSides:
face.Fill = Brushes.Black;
foreach (var item in buffer)
{
DCELHalfEdge2D f = item as DCELHalfEdge2D;
f.Stroke = Brushes.Black;
}
buffer.Clear();
break;
case ViewMode.FaceVertices:
face.Fill = Brushes.Black;
foreach (var item in buffer)
{
DCELVertex2D v = item as DCELVertex2D;
v.Fill = Brushes.Black;
}
buffer.Clear();
break;
default:
break;
}
}
public void UpdateEdge(DCELHalfEdge2D edge)
{
if (edge == null)
{
return;
}
if (edge != currentSelected)
{
if (currentSelected != null)
{
currentSelected.Stroke = Brushes.Black;
if (currentSelected.Face != null)
{
currentSelected.Face.Fill = Brushes.Black;
}
currentSelected.Origin.Fill = Brushes.Black;
}
edge.Stroke = Brushes.Green;
if (edge.Face != null)
{
edge.Face.Fill = Brushes.LightBlue;
}
edge.Origin.Fill = Brushes.Blue;
currentSelected = edge;
}
else
{
if (currentSelected != null)
{
currentSelected.Stroke = Brushes.Black;
if (currentSelected.Face != null)
{
currentSelected.Face.Fill = Brushes.Black;
}
currentSelected.Origin.Fill = Brushes.Black;
}
currentSelected = null;
}
}
public void InitializeEdge(DCELHalfEdge2D edge)
{
TranslateCoords(edge);
edge.HeadHeight = 0.4;
edge.HeadWidth = 1;
edge.Stroke = Brushes.Black;
edge.StrokeThickness = 0.1;
double d = Math.Sqrt(Math.Pow(edge.X2 - edge.X1, 2) + Math.Pow(edge.Y2 - edge.Y1, 2));
double r = (d - .75) / d;
edge.RenderTransform = new ScaleTransform(r, r, (edge.X2 + edge.X1) / 2, (edge.Y2 + edge.Y1) / 2);
edge.MouseEnter += new MouseEventHandler(edge_MouseEnter);
edge.MouseLeave += new MouseEventHandler(edge_MouseLeave);
edge.MouseDown += new MouseButtonEventHandler(edge_MouseDown);
collection.Add(edge);
}
void origin_MouseLeave(object sender, MouseEventArgs e)
{
var origin = sender as DCEL2D.DCELVertex2D;
switch (MeshViewMode)
{
case ViewMode.Geometry:
break;
case ViewMode.Wireframe:
break;
case ViewMode.DCELStructure:
origin.Fill = Brushes.Black;
origin.Leaving.Stroke = Brushes.Black;
break;
case ViewMode.LeavingEdges:
origin.Fill = Brushes.Black;
foreach (var item in buffer)
{
DCELHalfEdge2D he = item as DCELHalfEdge2D;
he.Stroke = Brushes.Black;
}
buffer.Clear();
break;
case ViewMode.AdjacentFaces:
origin.Fill = Brushes.Black;
foreach (var item in buffer)
{
DCELFace2D f = item as DCELFace2D;
f.Fill = Brushes.Black;
}
buffer.Clear();
break;
case ViewMode.AdjacentVertices:
origin.Fill = Brushes.Black;
foreach (var item in buffer)
{
DCELVertex2D v = item as DCELVertex2D;
v.Fill = Brushes.Black;
}
buffer.Clear();
break;
case ViewMode.KStar:
origin.Fill = Brushes.Black;
foreach (var item in buffer)
{
DCELFace2D f = item as DCELFace2D;
f.Fill = Brushes.Black;
}
buffer.Clear();
break;
default:
break;
}
}
