private void OnVislualizerClick(object sender, MouseButtonEventArgs e)
{
if (VisualizerClickCommand != null)
{
var position = e.GetPosition(Visualizer);
var vertex = new Vertex
{
X = position.X,
Y = position.Y,
BorderThickness = new Thickness(Visualizer.DefaultVertexBorderThickness),
BorderBrush = Visualizer.DefaultVertexBorderBrush,
Background = Visualizer.DefaultVertexBackground,
Style = Visualizer.DefaultVertexStyle,
Radius = START_NEW_VERTEX_R
};
VisualizerClickCommand.Execute(vertex);
if (vertex.Name != "")
{
Visualizer.AddVertex(vertex);
}
vertex.X = position.X;
vertex.Y = position.Y;
var animation = SilverlightHelper.GetStoryboard(vertex,
"Radius",
20.0,
0.15,
null);
animation.Begin();
}
VertVis = Visualizer.Vertices;
}
private void MoveVertices()
{
if (_visualizationAlgorithm != VisualizationAlgorithm.ChargesAndSprings)
{
return;
}
_animationTimer.Stop();
if (!IsAnimationSuspended)
{
var coordsDeltas = new Point[_vertices.Count];
// Считаем действующие на вершины силы
for (var i = 0; i < _vertices.Count; ++i)
{
var vi = _vertices[i];
var fx = 0.0;
var fy = 0.0;
var deltaI = new Point(0.0, 0.0);
for (var j = 0; j < _vertices.Count; ++j)
{
if (j == i)
{
continue;
}
var vj = _vertices[j];
var distanceIj = Distance(vi, vj);
var ex = (vi.ModelX - vj.ModelX) / distanceIj;
var ey = (vi.ModelY - vj.ModelY) / distanceIj;
fx += G * ex / Math.Pow(distanceIj, 2);
fy += G * ey / Math.Pow(distanceIj, 2);
if (this[vi, vj] != null || this[vj, vi] != null)
{
fx -= K * (distanceIj - L) * ex;
fy -= K * (distanceIj - L) * ey;
}
else
{
fx -= K * (distanceIj - L) * ex / 2;
fy -= K * (distanceIj - L) * ey / 2;
}
deltaI.X += fx * TICK_INTERVAL;
deltaI.Y += fy * TICK_INTERVAL;
}
coordsDeltas[i] = deltaI;
}
var newPositions = new Point[_vertices.Count];
for (var i = 0; i < _vertices.Count; ++i)
{
var vi = _vertices[i];
var deltaI = coordsDeltas[i];
newPositions[i].X = vi.ModelX + deltaI.X;
newPositions[i].Y = vi.ModelY + deltaI.Y;
}
var scaleFactor = GetScaleFactor();
// Подравниваем, чтобы картинка оставалась в центре
var minX = newPositions.Min(p => p.X) * scaleFactor;
var minY = newPositions.Min(p => p.Y) * scaleFactor;
var maxX = newPositions.Max(p => p.X) * scaleFactor;
var maxY = newPositions.Max(p => p.Y) * scaleFactor;
var graphCenter = new Point((maxX + minX) / 2, (maxY + minY) / 2);
var layoutCenter = new Point(LayoutRoot.ActualWidth / 2, LayoutRoot.ActualHeight / 2);
var deltaX = layoutCenter.X - graphCenter.X;
var deltaY = layoutCenter.Y - graphCenter.Y;
for (var i = 0; i < newPositions.Length; ++i)
{
newPositions[i].X += deltaX / scaleFactor;
newPositions[i].Y += deltaY / scaleFactor;
}
// Запускаем анимацию
for (var i = 0; i < _vertices.Count; ++i)
{
var vi = _vertices[i];
if (vi.Equals(CapturedVertex))
{
continue;
}
var targetPositionI = newPositions[i];
var xiAnimation = SilverlightHelper
.GetStoryboard(vi, "ModelX", targetPositionI.X, ANIMATION_INTERVAL, null);
var yiAnimation = SilverlightHelper
.GetStoryboard(vi, "ModelY", targetPositionI.Y, ANIMATION_INTERVAL, null);
var scaleAnimation = SilverlightHelper
.GetStoryboard(vi, "ScaleFactor", scaleFactor, ANIMATION_INTERVAL, null);
xiAnimation.Begin();
yiAnimation.Begin();
scaleAnimation.Begin();
}
}
_animationTimer.Start();
}