public void IsovistFromPointReturnsExceptionIfOriginPointIsInsideInternalPolygonTest()
{
// Create obstruction
Polygon internals = Rectangle.ByWidthLength(5, 5) as Polygon;
// Create origin point
Point originPoint = Point.ByCoordinates(0, 0);
Assert.Throws <ApplicationException>(() => Isovist.FromPoint(new List <Polygon> {
layoutPolygon
}, new List <Polygon> {
internals
}, originPoint));
}
public void IsovistFromPointReturnsCorrectSurfaceAreaTest()
{
// Create origin point
Point originPoint = layoutPolygon.Center();
// Create isovist form the origin point
Surface isovist = Isovist.FromPoint(new List <Polygon> {
layoutPolygon
}, new List <Polygon> {
layoutPolygon
}, originPoint);
// Checks if the area of the isovist is equal to the area of the layout
// as there are no obstructions the entire layout should be visible from the origin point
Assert.AreEqual(isovist.Area, Surface.ByPatch(layoutPolygon).Area);
}
public void IsovistFromPointDetectsObstructionsInLayoutTest()
{
// Create obstruction
Polygon internals = Rectangle.ByWidthLength(5, 5) as Polygon;
// Create origin point
Point originPoint = Point.ByCoordinates(3, 3);
// Create isovist form the origin point
Surface isovist = Isovist.FromPoint(new List <Polygon> {
layoutPolygon
}, new List <Polygon> {
internals
}, originPoint);
// Checks that the area returned by the isovist is not equal to the area of the layout
// and that the isovist does not intersect the midpoint of the obstacle.
Assert.AreNotEqual(Surface.ByPatch(layoutPolygon).Area, isovist.Area);
Assert.False(isovist.DoesIntersect(internals.Center()));
}
private void draw(Isovist isovist)
{
this._children.Clear();
this._edges.Clear();
this._escapeRoutes.Clear();
var boundaries = isovist.GetBoundary(this._host.cellularFloor);
this._edges.Add(isovist.VantageCell, boundaries);
double scale = this.getScaleFactor();
Point p1 = new Point(), p2 = new Point();
DrawingVisual drawingVisual = new DrawingVisual();
using (DrawingContext drawingContext = drawingVisual.RenderOpen())
{
StreamGeometry sg = new StreamGeometry();
using (StreamGeometryContext sgc = sg.Open())
{
foreach (BarrierPolygon item in boundaries)
{
sgc.BeginFigure(new Point(item.BoundaryPoints[0].U, item.BoundaryPoints[0].V), true, true);
foreach (var uv in item.BoundaryPoints)
{
sgc.LineTo(new Point(uv.U, uv.V), true, true);
}
}
}
drawingContext.DrawGeometry(this._fillBrush, null, sg);
Pen pen = new Pen(this._centerBrush, this._host.cellularFloor.CellSize);
p1.X = isovist.VantageCell.U;
p1.Y = isovist.VantageCell.V + this._host.cellularFloor.CellSize / 2;
p2.X = isovist.VantageCell.U + this._host.cellularFloor.CellSize;
p2.Y = isovist.VantageCell.V + this._host.cellularFloor.CellSize / 2;
drawingContext.DrawLine(pen, p1, p2);
}
drawingVisual.Drawing.Freeze();
this._children.Add(drawingVisual);
}
private void getCellularIsovist_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
var point = this._host.InverseRenderTransform.Transform(Mouse.GetPosition(this._host.FloorScene));
UV p = new UV(point.X, point.Y);
Cell cell = this._host.cellularFloor.FindCell(p);
if (cell == null)
{
MessageBox.Show("Pick a point on the walkable field and try again!\n");
return;
}
switch (this._host.IsovistBarrierType)
{
case BarrierType.Visual:
if (cell.VisualOverlapState != OverlapState.Outside)
{
MessageBox.Show("Pick a point outside visual barriers.\nTry again!");
return;
}
break;
case BarrierType.Physical:
if (cell.PhysicalOverlapState != OverlapState.Outside)
{
MessageBox.Show("Pick a point outside physical barriers.\nTry again!");
return;
}
break;
case BarrierType.Field:
if (cell.FieldOverlapState != OverlapState.Inside)
{
MessageBox.Show("Pick a point inside the walkable field.\nTry again!");
return;
}
break;
case BarrierType.BarrierBuffer:
if (cell.BarrierBufferOverlapState != OverlapState.Outside)
{
MessageBox.Show("Pick a point outside barrier buffers.\nTry again!");
return;
}
break;
default:
break;
}
var timer = new System.Diagnostics.Stopwatch();
try
{
timer.Start();
Isovist isovist = CellularIsovistCalculator.GetIsovist(p, this._host.IsovistDepth, this._host.IsovistBarrierType, this._host.cellularFloor);
//Isovist isovist = CellularIsovistCalculator.GetIsovist(p,this._host.isoDepth, BarrierType.BarrierBuffer, this._host.cellularFloor);
timer.Stop();
this._host.IsovistInformation = new IsovistInformation(IsovistInformation.IsovistType.Cellular,
timer.Elapsed.TotalMilliseconds, isovist.GetArea(this._host.cellularFloor.CellSize), double.NaN);
this.draw(isovist);
}
catch (Exception error1)
{
this._host.IsovistInformation = null;
MessageBox.Show(error1.Report());
}
timer = null;
}
private void drawInRevit()
{
this._host.Hide();
UV p = this._host.OSM_to_BIM.PickPoint("Pick a vantage point to draw cellular Isovist");
Cell cell = this._host.cellularFloor.FindCell(p);
if (cell == null)
{
MessageBox.Show("Pick a point on the walkable field and try again!\n");
return;
}
switch (this._host.IsovistBarrierType)
{
case BarrierType.Visual:
if (cell.VisualOverlapState != OverlapState.Outside)
{
MessageBox.Show("Pick a point outside visual barriers.\nTry again!");
this._host.ShowDialog();
return;
}
break;
case BarrierType.Physical:
if (cell.PhysicalOverlapState != OverlapState.Outside)
{
MessageBox.Show("Pick a point outside physical barriers.\nTry again!");
this._host.ShowDialog();
return;
}
break;
case BarrierType.Field:
if (cell.FieldOverlapState != OverlapState.Inside)
{
MessageBox.Show("Pick a point inside the walkable field.\nTry again!");
this._host.ShowDialog();
return;
}
break;
case BarrierType.BarrierBuffer:
if (cell.BarrierBufferOverlapState != OverlapState.Outside)
{
MessageBox.Show("Pick a point outside barrier buffers.\nTry again!");
this._host.ShowDialog();
return;
}
break;
default:
break;
}
Isovist isovist = null;
var timer = new System.Diagnostics.Stopwatch();
try
{
timer.Start();
isovist = CellularIsovistCalculator.GetIsovist(p, this._host.IsovistDepth, this._host.IsovistBarrierType, this._host.cellularFloor);
timer.Stop();
this._host.IsovistInformation = new IsovistInformation(IsovistInformation.IsovistType.Cellular,
timer.Elapsed.TotalMilliseconds, isovist.GetArea(this._host.cellularFloor.CellSize), double.NaN);
}
catch (Exception error0)
{
this._host.IsovistInformation = null;
MessageBox.Show(error0.Report());
}
timer = null;
if (isovist != null)
{
try
{
var boundaries = isovist.GetBoundary(this._host.cellularFloor);
double elevation = this._host.BIM_To_OSM.PlanElevation;
foreach (var item in boundaries)
{
this._host.OSM_to_BIM.VisualizePolygon(item.BoundaryPoints, elevation);
}
}
catch (Exception error1)
{
MessageBox.Show(error1.Report());
}
}
this._host.ShowDialog();
}
private void endBtn_Click(object sender, RoutedEventArgs e)
{
this._host.CommandReset.Click -= endBtn_Click;
this._host.Menues.IsEnabled = true;
this._host.UIMessage.Visibility = Visibility.Hidden;
//this.JGraphMode = false;
this._host.Cursor = Cursors.Arrow;
this._host.FloorScene.MouseLeftButtonDown -= FloorScene_MouseLeftButtonDown;
try
{
#region Create Graph
HashSet <UV> pnts = new HashSet <UV>();
TriangleNet.Behavior behavior = new Behavior();
TriangleNet.Mesh t_mesh = new TriangleNet.Mesh();
TriangleNet.Geometry.InputGeometry geom = new TriangleNet.Geometry.InputGeometry();
foreach (Node node in JGNodes)
{
TriangleNet.Data.Vertex vertex = new TriangleNet.Data.Vertex(node.Coordinates.U, node.Coordinates.V, 0);
geom.AddPoint(vertex);
pnts.Add(node.Coordinates);
}
t_mesh.Triangulate(geom);
var graph = new JGGraph(pnts);
foreach (var item in t_mesh.Triangles)
{
UV a = null;
var vrtx = t_mesh.GetVertex(item.P0);
if (vrtx != null)
{
a = new UV(vrtx.X, vrtx.Y);
}
UV b = null;
vrtx = t_mesh.GetVertex(item.P1);
if (vrtx != null)
{
b = new UV(vrtx.X, vrtx.Y);
}
UV c = null;
vrtx = t_mesh.GetVertex(item.P2);
if (vrtx != null)
{
c = new UV(vrtx.X, vrtx.Y);
}
if (a != null && b != null)
{
graph.AddConnection(a, b);
}
if (a != null && c != null)
{
graph.AddConnection(a, c);
}
if (c != null && b != null)
{
graph.AddConnection(c, b);
}
}
#endregion
#region Remove Edges with isovists at the ends that do not overlap
this.edges = graph.ToEdges();
Dictionary <int, Isovist> IsovistGuid = new Dictionary <int, Isovist>();
foreach (JGVertex item in graph.Vertices)
{
double x = double.NegativeInfinity;
foreach (JGVertex vertex in item.Connections)
{
var y = item.Point.DistanceTo(vertex.Point);
if (y > x)
{
x = y;
}
}
var isovist = CellularIsovistCalculator.GetIsovist(item.Point, x, BarrierType.Visual, this._host.cellularFloor);
IsovistGuid.Add(item.Point.GetHashCode(), isovist);
}
HashSet <JGEdge> visibleVertexes = new HashSet <JGEdge>();
foreach (JGEdge item in this.edges)
{
Isovist v1 = null;
IsovistGuid.TryGetValue(item.P1.GetHashCode(), out v1);
Isovist v2 = null;
IsovistGuid.TryGetValue(item.P2.GetHashCode(), out v2);
if (v1 != null && v2 != null)
{
if (v2.VisibleCells.Overlaps(v1.VisibleCells))
{
visibleVertexes.Add(item);
}
}
}
#endregion
#region setting the edges
JGEdge.LineToEdgeGuide.Clear();
foreach (JGEdge edge in this.edges)
{
edge.Clear();
}
this.edges = visibleVertexes.ToList <JGEdge>();
foreach (JGEdge item in this.edges)
{
item.Draw();
}
#endregion
//cleaning up the used data
t_mesh = null;
graph = null;
geom.Clear();
geom = null;
visibleVertexes = null;
IsovistGuid = null;
//enabling edit mode
this.EditGraph.IsEnabled = true;
this.DrawJG.IsEnabled = true;
this.Hide_show_Menu.IsEnabled = true;
this.CreateCovexGraph.Header = "Reset Convex Graph";
}
catch (Exception error)
{
MessageBox.Show(error.Report());
}
}
