public void StreamGeometryTriangleExample(List <System.Windows.Point> arrPoints)
{
// Create a path to draw a geometry with.
System.Windows.Shapes.Path myPath = new System.Windows.Shapes.Path();
myPath.Stroke = System.Windows.Media.Brushes.Black;
myPath.StrokeThickness = 1;
System.Windows.Media.Color cl = new System.Windows.Media.Color();
byte[] arr = new byte[4];
rand.NextBytes(arr);
//cl.A =
System.Windows.Media.Brush br = new System.Windows.Media.SolidColorBrush(System.Windows.Media.Color.FromArgb(arr[0], arr[1], arr[2], arr[3]));
#region для заполнение разкоментировать
// myPath.Fill = br;
#endregion
// Create a StreamGeometry to use to specify myPath.
System.Windows.Media.StreamGeometry geometry = new System.Windows.Media.StreamGeometry();
// geometry.FillRule = System.Windows.Media.FillRule.EvenOdd;
// Open a StreamGeometryContext that can be used to describe this StreamGeometry
// object's contents.
using (System.Windows.Media.StreamGeometryContext ctx = geometry.Open())
{
// Begin the triangle at the point specified. Notice that the shape is set to
// be closed so only two lines need to be specified below to make the triangle.
//ctx.BeginFigure(arrPoints[0], true /* is filled */, true /* is closed */);
ctx.BeginFigure(arrPoints[0], true /* is filled */, false /* is closed */);
for (int i = 1; i < arrPoints.Count; i++)
{
ctx.LineTo(arrPoints[i], true /* is stroked */, false /* is smooth join */);
}
// Draw a line to the next specified point.
// ctx.LineTo(new System.Windows.Point(100, 100), true /* is stroked */, false /* is smooth join */);
// Draw another line to the next specified point.
// ctx.LineTo(new System.Windows.Point(100, 50), true /* is stroked */, false /* is smooth join */);
}
// Freeze the geometry (make it unmodifiable)
// for additional performance benefits.
geometry.Freeze();
// Specify the shape (triangle) of the Path using the StreamGeometry.
myPath.Data = geometry;
// Add path shape to the UI.
StackPanel mainPanel = new StackPanel();
Canvas ss = cv;
ss.Children.Clear();
ss.Children.Add(myPath);
}
///<summary>
/// Creates a <see cref="WpfGeometry"/> representing a <see cref="IGeometry"/>, according to the specified PointTransformation and PointShapeFactory (if relevant).
///</summary>
public WpfGeometry ToShape(IGeometry geometry)
{
if (geometry.IsEmpty)
{
return(new WpfStreamGeometry());
}
var p = new WpfStreamGeometry();
using (var sgc = p.Open())
AddShape(sgc, geometry);
p.Freeze();
return(p);
}
///<summary>
/// Creates a <see cref="WpfGeometry"/> representing a <see cref="IGeometry"/>, according to the specified PointTransformation and PointShapeFactory (if relevant).
///</summary>
public WpfGeometry ToShape(IGeometry geometry)
{
if (geometry.IsEmpty)
return new WpfStreamGeometry();
var p = new WpfStreamGeometry();
using (var sgc = p.Open())
AddShape(sgc, geometry);
p.Freeze();
return p;
}
public void Draw(TextView textView, System.Windows.Media.DrawingContext drawingContext) {
if (markers == null || !textView.VisualLinesValid) {
return;
}
var visualLines = textView.VisualLines;
if (visualLines.Count == 0) {
return;
}
int viewStart = visualLines.First().FirstDocumentLine.Offset;
int viewEnd = visualLines.Last().LastDocumentLine.EndOffset;
foreach (TextMarker marker in markers.FindOverlappingSegments(viewStart, viewEnd - viewStart)) {
if (marker.BackgroundColor != null) {
var geoBuilder = new BackgroundGeometryBuilder { AlignToWholePixels = true, CornerRadius = 3 };
geoBuilder.AddSegment(textView, marker);
System.Windows.Media.Geometry geometry = geoBuilder.CreateGeometry();
if (geometry != null) {
System.Windows.Media.Color color = marker.BackgroundColor.Value;
var brush = new System.Windows.Media.SolidColorBrush(color);
brush.Freeze();
drawingContext.DrawGeometry(brush, null, geometry);
}
}
foreach (System.Windows.Rect r in BackgroundGeometryBuilder.GetRectsForSegment(textView, marker)) {
var startPoint = r.BottomLeft;
var endPoint = r.BottomRight;
var usedPen = new System.Windows.Media.Pen(new System.Windows.Media.SolidColorBrush(marker.MarkerColor), 1);
usedPen.Freeze();
const double offset = 2.5;
int count = Math.Max((int)((endPoint.X - startPoint.X) / offset) + 1, 4);
var geometry = new System.Windows.Media.StreamGeometry();
using (System.Windows.Media.StreamGeometryContext ctx = geometry.Open()) {
ctx.BeginFigure(startPoint, false, false);
ctx.PolyLineTo(CreatePoints(startPoint, endPoint, offset, count).ToArray(), true, false);
}
geometry.Freeze();
drawingContext.DrawGeometry(System.Windows.Media.Brushes.Transparent, usedPen, geometry);
break;
}
}
}
