private void CreateArrows(Path path, StreamGeometryContext gc)
{
double start;
if (path.PathType == PathType.Convex)
{
start = GeometryHelper.GetAngleFromPoint(path.StartPoint, path.Origin);
}
else
{
start = GeometryHelper.GetAngleFromPoint(path.EndPoint, path.Origin);
}
for(int i= 0; i < 10; i++)
{
start += 8;
var org = GeometryHelper.GetPointAtAngle(path.Origin, path.Radius, start);
var pt1 = GeometryHelper.GetPointAtAngle(path.Origin, path.Radius + 10, start);
var pt2 = GeometryHelper.GetPointAtAngle(path.Origin, path.Radius - 10, start);
var pt3 = GeometryHelper.GetPointAtAngle(org, 20, start + 90);
gc.BeginFigure(pt1, true, true);
gc.LineTo(pt2, true, true);
gc.LineTo(pt3, true, true);
gc.LineTo(pt1, true, true);
gc.BeginFigure(path.Origin, false, false);
gc.LineTo(pt1, true, true);
}
}
public PathStepVisual(Path path)
{
var brush = Brushes.Blue;
var pen = new Pen(brush, 1);
var stepPlotter = new PathAngleCalculator(path);
var angles = stepPlotter.Calculate();
var anglePerUnit = stepPlotter.CalculateAnglePerUnit();
var upperCurve = path.Radius + (path.Width/4);
var lowerCurve = path.Radius - (path.Width/4);
const int unitSize = 15;
const int unitSizeDivisor = 3;
var geometry = new StreamGeometry();
using(var gc = geometry.Open())
{
foreach (var angle in angles)
{
var angleMovement = angle - ((anglePerUnit * unitSize)/2);
var centrePoint = GeometryHelper.GetPointAtAngle(path.Origin, upperCurve, angle);
var lower = GeometryHelper.GetPointAtAngle(path.Origin, upperCurve - unitSize/unitSizeDivisor, angleMovement);
var upper = GeometryHelper.GetPointAtAngle(path.Origin, upperCurve + unitSize/unitSizeDivisor, angleMovement);
var centre = GeometryHelper.GetPointAtAngle(path.Origin, upperCurve, angleMovement);
var point = GeometryHelper.GetPointAtAngle(centre, unitSize, angle + 90);
gc.BeginFigure(lower, true, true);
gc.LineTo(upper, true, true);
gc.LineTo(point, true, true);
gc.LineTo(lower, true, true);
angleMovement = angle + ((anglePerUnit * unitSize) / 2);
centrePoint = GeometryHelper.GetPointAtAngle(path.Origin, lowerCurve, angle);
lower = GeometryHelper.GetPointAtAngle(path.Origin, lowerCurve - unitSize / unitSizeDivisor, angleMovement);
upper = GeometryHelper.GetPointAtAngle(path.Origin, lowerCurve + unitSize / unitSizeDivisor, angleMovement);
centre = GeometryHelper.GetPointAtAngle(path.Origin, lowerCurve, angleMovement);
point = GeometryHelper.GetPointAtAngle(centre, unitSize, angle - 90);
gc.BeginFigure(lower, true, true);
gc.LineTo(upper, true, true);
gc.LineTo(point, true, true);
gc.LineTo(lower, true, true);
}
}
using (var context = RenderOpen())
{
context.DrawGeometry(brush, pen, geometry);
}
}
public PathElementsVisual(Path path)
{
var geometry = new StreamGeometry();
using(var gc = geometry.Open())
{
CreateArrows(path, gc);
}
using (var context = RenderOpen())
{
var linePen = new Pen(Brushes.Red, 1);
context.DrawLine(linePen, path.StartPoint, path.EndPoint);
var firstCirclePen = new Pen(Brushes.Green, 1);
context.DrawEllipse(Brushes.Transparent, firstCirclePen, path.CurveCircles[0], path.Radius, path.Radius);
var secondCirclePen = new Pen(Brushes.Orange, 1);
context.DrawEllipse(Brushes.Transparent, secondCirclePen, path.CurveCircles[1], path.Radius, path.Radius);
context.DrawGeometry(Brushes.Black, new Pen(Brushes.Black, 1), geometry);
}
}
public Context()
{
firstPath = new Path(new Point(50, 200), new Point(450, 200), 220, 100, PathType.Convex);
//secondPath = new Path(new Point(450, 150), new Point(550, 600), 280, 100, PathDirection.Convex);
}
/// <summary>
/// Initializes a new instance of the <see cref="PathOutliner"/> class.
/// </summary>
/// <param name="path"></param>
/// <param name="origin"></param>
public PathOutliner(Path path, Point origin)
{
this.path = path;
this.origin = origin;
}
/// <summary>
/// Initializes a new instance of the <see cref="PathAnglePlotter"/> class.
/// </summary>
/// <param name="path"></param>
public PathAngleCalculator(Path path)
{
this.path = path;
}
/// <summary>
/// Initializes a new instance of the <see cref="PathNodePlotter"/> class.
/// </summary>
/// <param name="path"></param>
public PathNodePlotter(Path path)
{
this.path = path;
}