翻譯|使用教程|編輯:楊鵬連|2020-08-19 13:53:11.713|閱讀 363 次
概述:本教程介紹了如何使用PointLineSeries3D在3D圖表中顯示點和線,以及如何使用鼠標創建多個點系列和跟蹤點值。使用注釋顯示跟蹤的值,該注釋允許在圖表區域的任何位置顯示標簽或圖形。
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1.將View3D定義為活動視圖并定義Z軸范圍。
// Set View3D as active view and set Z-axis range. chart.ActiveView = ActiveView.View3D; chart.View3D.ZAxisPrimary3D.SetRange(0, 80);2.創建一個新的PointLineSeries3D對象以顯示數據。
// Create a new PointLineSeries3D for displaying data and set axis bindings to primary axes. var series = new PointLineSeries3D(chart.View3D, Axis3DBinding.Primary, Axis3DBinding.Primary, Axis3DBinding.Primary) { // Set this to true to set a color for individual points. IndividualPointColors = true, // Set this to true in order for mouse tracking to work. MouseInteraction = true };3.將樣式應用于新創建的系列。
// Set a title to the series. series.Title.Text = "Series 0"; // Set point shape to a sphere. series.PointStyle.Shape3D = PointShape3D.Sphere; // Set individual point size. series.PointStyle.Size3D.SetValues(3, 3, 3); // Set the width of the line between points. series.LineStyle.Width = 0.4f; // Draw the line between points with the same color as the points. series.LineStyle.LineOptimization = LineOptimization.NormalWithShading; // Set a color to the line. series.LineStyle.Color = Color.FromArgb(255, 255, 0, 0);4.為數據點創建SeriesPoint3D數組并添加數據。
// Create a SeriesPoint3D array for data points. SeriesPoint3D[] points = new SeriesPoint3D[10]; // Generate sample data to the array. for (int j = 0; j < 10; j++) { // Random values for data points. points[j].X = 5 + j * 10; points[j].Y = 30 + random.NextDouble() * 25.0; points[j].Z = 10 + i * 10; // You can set an individual color to each point with the Color property. points[j].Color = Color.FromArgb(255, 255, 0, 0); } // Set the points array to series Points property. series.Points = points; // Add the series to chart's View3D. chart.View3D.PointLineSeries3D.Add(series);5.創建一個注釋以顯示鼠標跟蹤值
// Create a new annotation to display target values when hovering over a point with the mouse. mouseAnnotation = new Annotation3D(chart.View3D, Axis3DBinding.Primary, Axis3DBinding.Primary, Axis3DBinding.Primary) { // Set the annotation as invisible by default. Visible = false, // Set the annotations target location coordinates to use axis values. TargetCoordinateSystem = AnnotationTargetCoordinates.AxisValues, // Set the annotations location to use relative screen coordinates to target. LocationCoordinateSystem = CoordinateSystem.RelativeCoordinatesToTarget, // Disable mouse interaction with the annotation. MouseInteraction = false }; // Set offset to annotation. mouseAnnotation.LocationRelativeOffset.SetValues(40, -70); // Add annotation to View3D. chart.View3D.Annotations.Add(mouseAnnotation);6.將MouseMove事件處理程序添加到圖表中以啟用點跟蹤
chart.MouseMove += Chart_MouseMove;7.為鼠標移動事件處理程序創建一個函數
private void Chart_MouseMove(object sender, System.Windows.Input.MouseEventArgs e) { // Call BeginUpdate for chart to disable rendering while mouse is moving // over the chart to improve performance. chart.BeginUpdate(); // Set label visible when not hovered over by mouse. mouseAnnotation.Visible = false; // Check if any object has been found under the mouse. object obj = chart.GetActiveMouseOverObject(); if (obj != null) { // Check if the active mouse over object is a PointLineSeries object. if (obj is PointLineSeries3D) { PointLineSeries3D pointLineSeries3D = obj as PointLineSeries3D; // Get the point last hit by mouse. int pointIndex = pointLineSeries3D.LastMouseHitTestIndex; SeriesPoint3D point = pointLineSeries3D.Points[pointIndex]; // Set annotation position to the moused over point. mouseAnnotation.TargetAxisValues.SetValues(point.X, point.Y, point.Z); // Set annotation text to display information about the moused over point. mouseAnnotation.Text = "Series index: " + chart.View3D.PointLineSeries3D.IndexOf(pointLineSeries3D).ToString() + "\nPoint index: " + pointIndex.ToString() + "\nX=" + point.X.ToString("0.0") + " ; Y=" + point.Y.ToString("0.0") + " ; Z=" + point.Z.ToString("0.0"); // Set the annotation visible while mouse is hovering over the point. mouseAnnotation.Visible = true; } } // Call EndUpdate to enable rendering again after handling mouse move event. chart.EndUpdate(); }
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