/// <summary>
/// Create a path object based on a list of vertices - used when creating geometry
/// </summary>
public static UIShapes.Shape CreatePathFromVertices(Body body, PhysicsSprite element, WinUI.Color colorFill)
{
List<Fixture> vertices = body.FixtureList;
// is this an ellipse?
if (vertices[0].Shape is CircleShape)
{
CircleShape cs = vertices[0].Shape as CircleShape;
UIShapes.Ellipse el = new UIShapes.Ellipse();
Vector2 screenSize = PhysicsCanvas.BoundaryHelper.WorldSizeToScreenSize(new Vector2(cs.Radius * 2, cs.Radius * 2));
el.Width = screenSize.X;
el.Height = screenSize.Y;
el.Stroke = new SysWinMedia.SolidColorBrush(new WinUI.Color() { A = 255, R = 76, G = 108, B = 76 });
el.StrokeThickness = 4;
el.StrokeStartLineCap = SysWinMedia.PenLineCap.Round;
el.Fill = new SysWinMedia.SolidColorBrush(colorFill);
return el;
}
else
{
UIShapes.Path path = new UIShapes.Path();
path.Stroke = new SysWinMedia.SolidColorBrush(new WinUI.Color() { A = 255, R = 76, G = 108, B = 76 });
path.StrokeThickness = 4;
path.StrokeStartLineCap = SysWinMedia.PenLineCap.Round;
path.Fill = new SysWinMedia.SolidColorBrush(colorFill);
SysWinMedia.PathGeometry pathGeom = new SysWinMedia.PathGeometry();
SysWinMedia.PathFigureCollection figures = new SysWinMedia.PathFigureCollection();
pathGeom.Figures = figures;
double halfWidth = element.Width / 2d;
double halfHeight = element.Height / 2d;
if (halfWidth == 0) halfWidth = element.ActualWidth / 2d;
if (halfHeight == 0) halfHeight = element.ActualHeight / 2d;
foreach (Fixture f in vertices)
{
if (f.Shape is PolygonShape)
{
SysWinMedia.PathFigure figure = new SysWinMedia.PathFigure();
PolygonShape p = f.Shape as PolygonShape;
// first vertex, create the startpoint
Vector2 ptStart = new Vector2((float)p.Vertices[0].X, (float)p.Vertices[0].Y);
ptStart = PhysicsCanvas.BoundaryHelper.WorldSizeToScreenSize(ptStart);
ptStart.X += (float)(halfWidth);
ptStart.Y += (float)(halfHeight);
figure.StartPoint = new SysWin.Point(ptStart.X, ptStart.Y);
figure.Segments = new SysWinMedia.PathSegmentCollection();
pathGeom.Figures.Add(figure);
for (int i = 1; i < p.Vertices.Count; i++)
{
SysWinMedia.LineSegment line = new SysWinMedia.LineSegment();
Vector2 pt = new Vector2((float)p.Vertices[i].X, (float)p.Vertices[i].Y);
pt = PhysicsCanvas.BoundaryHelper.WorldSizeToScreenSize(pt);
pt.X += (float)(halfWidth);
pt.Y += (float)(halfHeight);
line.Point = new SysWin.Point(pt.X, pt.Y); ;
figure.Segments.Add(line);
}
}
}
path.Data = pathGeom;
return path;
}
}
public PathGeometry()
{
// This is done here to ensure that the Parent is set properly on the new PathFigureCollection.
Figures = new PathFigureCollection();
}