private void draw(Proxemics proxemics)
{
double scale = this.getScaleFactor();
DrawingVisual drawingVisual = new DrawingVisual();
using (DrawingContext drawingContext = drawingVisual.RenderOpen())
{
StreamGeometry sg0 = new StreamGeometry();
using (StreamGeometryContext sgc = sg0.Open())
{
sgc.BeginFigure(this.toPoint(proxemics.ProxemicsPolygons[0].BoundaryPoints[0]), true, true);
for (int i = 1; i < proxemics.ProxemicsPolygons[0].BoundaryPoints.Length; i++)
{
sgc.LineTo(this.toPoint(proxemics.ProxemicsPolygons[0].BoundaryPoints[i]), true, true);
}
}
sg0.Freeze();
drawingContext.DrawGeometry(this.brushes[0], null, sg0);
for (int n = 1; n < this.radiuses.Length; n++)
{
StreamGeometry sg = new StreamGeometry();
using (StreamGeometryContext sgc = sg.Open())
{
sgc.BeginFigure(this.toPoint(proxemics.ProxemicsPolygons[n - 1].BoundaryPoints[0]), true, true);
for (int i = 1; i < proxemics.ProxemicsPolygons[n - 1].BoundaryPoints.Length; i++)
{
sgc.LineTo(this.toPoint(proxemics.ProxemicsPolygons[n - 1].BoundaryPoints[i]), true, true);
}
sgc.BeginFigure(this.toPoint(proxemics.ProxemicsPolygons[n].BoundaryPoints[0]), true, true);
for (int i = 1; i < proxemics.ProxemicsPolygons[n].BoundaryPoints.Length; i++)
{
sgc.LineTo(this.toPoint(proxemics.ProxemicsPolygons[n].BoundaryPoints[i]), true, true);
}
}
sg.FillRule = FillRule.EvenOdd;
sg.Freeze();
drawingContext.DrawGeometry(this.brushes[n], null, sg);
}
Point center = this.toPoint(proxemics.Center);
var p1 = new Point(center.X - this.centerSize / (2 * scale), center.Y);
var p2 = new Point(center.X + this.centerSize / (2 * scale), center.Y);
drawingContext.DrawLine(new Pen(this.centerBrush, this.centerSize / scale), p1, p2);
}
drawingVisual.Drawing.Freeze();
this._children.Add(drawingVisual);
}
private void mouseLeftButtonDown_GetProxemics(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;
}
try
{
BarrierPolygon[] barriers = new BarrierPolygon[this.radiuses.Length];
for (int i = 0; i < this.radiuses.Length; i++)
{
HashSet <UVLine> blocks = this._host.cellularFloor.PolygonalIsovistVisualObstacles(p, this.radiuses[i], this._host.IsovistBarrierType);
barriers[i] = this._host.BIM_To_OSM.IsovistPolygon(p, this.radiuses[i], blocks);
}
Proxemics proxemics = new Proxemics(barriers, p);
this.draw(proxemics);
}
catch (Exception error0)
{
MessageBox.Show(error0.Report());
}
}