private void TryCasheResources(IRenderContext2D context) { _strokePen = _strokePen ?? context.CreatePen(Stroke, AntiAliasing, (float)StrokeThickness, Opacity); _gainFillBrush = _gainFillBrush ?? context.CreateBrush(GainMarkerFill); _lossFillBrush = _lossFillBrush ?? context.CreateBrush(LossMarkerFill); }
/// <summary> /// Draws the series using the <see cref="IRenderContext2D" /> and the <see cref="IRenderPassData" /> passed in /// </summary> /// <param name="renderContext">The render context. This is a graphics object which has methods to draw lines, quads and polygons to the screen</param> /// <param name="renderPassData">The render pass data. Contains a resampled /// <see cref="IPointSeries" />, the /// <see cref="IndexRange" /> of points on the screen /// and the current YAxis and XAxis /// <see cref="ICoordinateCalculator{T}" /> to convert data-points to screen points</param> protected override void Draw(IRenderContext2D renderContext, IRenderPassData renderPassData) { base.Draw(renderContext, renderPassData); // Get the data from RenderPassData. See CustomRenderableSeries article which describes PointSeries relationship to DataSeries if (renderPassData.PointSeries.Count == 0) { return; } // Convert to Spline Series _splineSeries = ComputeSplineSeries(renderPassData.PointSeries, IsSplineEnabled, UpSampleFactor); // Get the coordinates of the first dataPoint var point = GetCoordinatesFor(_splineSeries[0].X, _splineSeries[0].Y); // Create a pen to draw the spline line. Make sure you dispose it! using (var linePen = renderContext.CreatePen(this.Stroke, this.AntiAliasing, this.StrokeThickness)) { // Create a line drawing context. Make sure you dispose it! // NOTE: You can create mutliple line drawing contexts to draw segments if you want // You can also call renderContext.DrawLine() and renderContext.DrawLines(), but the lineDrawingContext is higher performance using (var lineDrawingContext = renderContext.BeginLine(linePen, point.X, point.Y)) { for (int i = 1; i < _splineSeries.Count; i++) { point = GetCoordinatesFor(_splineSeries[i].X, _splineSeries[i].Y); lineDrawingContext.MoveTo(point.X, point.Y); } } } DrawPointMarkers(renderContext, renderPassData.PointSeries); }
protected override void Draw(IRenderContext2D renderContext, IRenderPassData renderPassData) { var xcal = renderPassData.XCoordinateCalculator; var ycal = renderPassData.YCoordinateCalculator; var surf = GetParentSurface(); var xrange = surf.XAxis.VisibleRange.AsDoubleRange(); var yrange = surf.YAxis.VisibleRange.AsDoubleRange(); var area = new Rect(xrange.Min, yrange.Min, xrange.Diff, yrange.Diff); var pixTakeCare = 3; var pixSizeX = (TReal)Math.Abs(xcal.GetDataValue(pixTakeCare) - xcal.GetDataValue(0.0)); var pixSizeY = (TReal)Math.Abs(ycal.GetDataValue(0.0) - ycal.GetDataValue(pixTakeCare)); var found = DataSeries.FindInArea(area, pixSizeX, pixSizeY); var brush = renderContext.CreateBrush(new SolidColorBrush(Colors.BlueViolet)); var pen = renderContext.CreatePen(Colors.Black, false, 1); foreach (var rect in found) { DrawRectangle(renderContext, pen, brush, xcal, ycal, (TReal)rect.X, (TReal)rect.Y, (TReal)rect.Width, (TReal)rect.Height); } brush.Dispose(); pen.Dispose(); var sdbg = DataSeries as Series4; //sdbg.DrawNodes(renderContext, xcal, ycal, area, pixSizeX, pixSizeY); }
private void CustomDraw(IRenderContext2D renderContext, IRenderPassData renderPassData) { var dataPointSeries = renderPassData.PointSeries as Point2DSeries; foreach (var pt in ptList) { System.Windows.Media.Color ptColor = System.Windows.Media.Color.FromArgb(pt.Color.A, pt.Color.R, pt.Color.G, pt.Color.B); var ptRefLocal = GetRenderingPoint(new Point(pt.Pt.X, pt.Pt.Y)); /// Create a pen to draw. Make sure you dispose it! using (var ptPen = renderContext.CreatePen(ptColor, this.AntiAliasing, (float)1)) { using (var ptBrush = renderContext.CreateBrush(new SolidColorBrush(ptColor))) { renderContext.DrawEllipse(ptPen, ptBrush, ptRefLocal, pt.Width, pt.Width); //using (var lineDrawingContext = renderContext.BeginLine(linePen, initialPoint.X, initialPoint.Y)) // { // lineDrawingContext.MoveTo(endPoint.X, endPoint.Y); // lineDrawingContext.End(); // } } } } }
private void CustomDraw(IRenderContext2D renderContext) { foreach (var p in polygonList) { Polygon polygon = p.Value.polygon; if (polygon.Points.Count > 0) { Point initialPoint = GetRenderingPoint(polygon.Points[0]); System.Windows.Media.Color backgroundColor = System.Windows.Media.Color.FromArgb(p.Value.backgroundColor.A, p.Value.backgroundColor.R, p.Value.backgroundColor.G, p.Value.backgroundColor.B); using (var brush = renderContext.CreateBrush(backgroundColor)) { //IEnumerable<Point> points; // define your points renderContext.FillPolygon(brush, GetRenderingPoints(polygon.Points)); } //// Create a pen to draw. Make sure you dispose it! System.Windows.Media.Color borderColor = System.Windows.Media.Color.FromArgb(p.Value.borderColor.A, p.Value.borderColor.R, p.Value.borderColor.G, p.Value.borderColor.B); using (var linePen = renderContext.CreatePen(borderColor, this.AntiAliasing, p.Value.borderWidth, p.Value.borderOpacity, p.Value.borderDashPattern)) { using (var lineDrawingContext = renderContext.BeginLine(linePen, initialPoint.X, initialPoint.Y)) { for (int i = 1; i < polygon.Points.Count; i++) { lineDrawingContext.MoveTo(GetRenderingPoint(polygon.Points[i]).X, GetRenderingPoint(polygon.Points[i]).Y); } lineDrawingContext.End(); } } } } }
public void DrawNodes(IRenderContext2D renderContext, ICoordinateCalculator <double> xc, ICoordinateCalculator <double> yc, Rect area, float pixSizeX, float pixSizeY) { var pen = renderContext.CreatePen(Colors.Brown, false, 1); var nodes = FindNodesWithDecimation(area, pixSizeX, pixSizeY); foreach (var node in nodes) { var p1 = new Point(xc.GetCoordinate(node.HorizontalRange.Min), yc.GetCoordinate(node.VerticalRange.Min)); var p2 = new Point(xc.GetCoordinate(node.HorizontalRange.Max), yc.GetCoordinate(node.VerticalRange.Max)); renderContext.DrawQuad(pen, p1, p2); } pen.Dispose(); }
private void CustomDraw(IRenderContext2D renderContext) { foreach (var s in segmentList) { Point initialPoint = GetRenderingPoint(new Point(s.Segment.X1, s.Segment.Y1)); Point endPoint = GetRenderingPoint(new Point(s.Segment.X2, s.Segment.Y2)); System.Windows.Media.Color segmentColor = System.Windows.Media.Color.FromArgb(s.Color.A, s.Color.R, s.Color.G, s.Color.B); /// Create a pen to draw. Make sure you dispose it! using (var linePen = renderContext.CreatePen(segmentColor, this.AntiAliasing, (float)s.Width, s.Opacity, s.DashPattern)) { using (var lineDrawingContext = renderContext.BeginLine(linePen, initialPoint.X, initialPoint.Y)) { lineDrawingContext.MoveTo(endPoint.X, endPoint.Y); lineDrawingContext.End(); } } } }
protected override void Draw(IRenderContext2D renderContext, IRenderPassData renderPassData) { base.Draw(renderContext, renderPassData); // Create a line drawing context. Make sure you dispose it! // NOTE: You can create mutliple line drawing contexts to draw segments if you want // You can also call renderContext.DrawLine() and renderContext.DrawLines(), but the lineDrawingContext is higher performance foreach (var p in polygonList) { Polygon polygon = p.Value.polygon; if (polygon.Points.Count > 0) { Point initialPoint = GetRenderingPoint(polygon.Points[0]); System.Windows.Media.Color backgroundColor = System.Windows.Media.Color.FromArgb(p.Value.backgroundColor.A, p.Value.backgroundColor.R, p.Value.backgroundColor.G, p.Value.backgroundColor.B); using (var brush = renderContext.CreateBrush(backgroundColor)) { //IEnumerable<Point> points; // define your points renderContext.FillPolygon(brush, GetRenderingPoints(polygon.Points)); } //// Create a pen to draw. Make sure you dispose it! System.Windows.Media.Color borderColor = System.Windows.Media.Color.FromArgb(p.Value.borderColor.A, p.Value.borderColor.R, p.Value.borderColor.G, p.Value.borderColor.B); using (var linePen = renderContext.CreatePen(borderColor, this.AntiAliasing, p.Value.borderWidth, p.Value.borderOpacity, p.Value.borderDashPattern)) { using (var lineDrawingContext = renderContext.BeginLine(linePen, initialPoint.X, initialPoint.Y)) { for (int i = 1; i < polygon.Points.Count; i++) { lineDrawingContext.MoveTo(GetRenderingPoint(polygon.Points[i]).X, GetRenderingPoint(polygon.Points[i]).Y); } lineDrawingContext.End(); } } } } }
protected override void Draw(IRenderContext2D renderContext, IRenderPassData renderPassData) { var xcal = renderPassData.XCoordinateCalculator; var ycal = renderPassData.YCoordinateCalculator; var surf = GetParentSurface(); var xrange = surf.XAxis.VisibleRange.AsDoubleRange(); var yrange = surf.YAxis.VisibleRange.AsDoubleRange(); var area = new Rect(xrange.Min, yrange.Min, xrange.Diff, yrange.Diff); var found = DataSeries.FindInArea(area); var brush = renderContext.CreateBrush(new SolidColorBrush(Colors.BlueViolet)); var pen = renderContext.CreatePen(Colors.Black, false, 1); foreach (var index in found) { var xv = DataSeries.XValues[index]; var yv = DataSeries.YValues[index]; var wv = DataSeries.WidthValues[index]; var hv = DataSeries.HeightValues[index]; DrawRectangle(renderContext, pen, brush, xcal, ycal, xv, yv, wv, hv); } brush.Dispose(); pen.Dispose(); }
public override void Draw(IRenderContext2D context, IEnumerable <Point> centers) { var fill = context.CreateBrush(Fill); var stroke = context.CreatePen(Stroke, AntiAliasing, (float)StrokeThickness); float width2 = (float)(Width * 0.5); float height2 = (float)(Height * 0.5); foreach (var center in centers) { double top = center.Y - height2; double bottom = center.Y + height2; double left = center.X - width2; double right = center.X + width2; var diamondPoints = new[] { // Points drawn like this: // // x0 (x4 in same location as x0) // // x3 x1 // // x2 new Point(center.X, top), // x0 new Point(right, center.Y), // x1 new Point(center.X, bottom), // x2 new Point(left, center.Y), // x3 new Point(center.X, top), // x4 == x0 }; context.FillPolygon(fill, diamondPoints); context.DrawLines(stroke, diamondPoints); } }