87 lines
2.5 KiB
C#
87 lines
2.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Windows.Media;
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using System.Windows;
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using System.Diagnostics;
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using Microsoft.Research.DynamicDataDisplay.Common.Auxiliary;
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using Microsoft.Research.DynamicDataDisplay.Charts.Shapes;
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using System.Windows.Threading;
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using System.Globalization;
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using Microsoft.Research.DynamicDataDisplay.Charts.NewLine;
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namespace Microsoft.Research.DynamicDataDisplay.Charts.Isolines
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{
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public abstract class IsolineRenderer : IsolineGraphBase
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{
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protected override void UpdateDataSource()
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{
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if (DataSource != null)
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{
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IsolineBuilder.DataSource = DataSource;
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IsolineBuilder.MissingValue = MissingValue;
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Collection = IsolineBuilder.BuildIsoline();
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}
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else
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{
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Collection = null;
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}
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}
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protected IEnumerable<double> GetAdditionalLevels(IsolineCollection collection)
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{
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var dataSource = DataSource;
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var visibleMinMax = dataSource.GetMinMax(Plotter2D.Visible);
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double totalDelta = collection.Max - collection.Min;
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double visibleMinMaxRatio = totalDelta / visibleMinMax.GetLength();
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double defaultDelta = totalDelta / 12;
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if (true || 2 * defaultDelta < visibleMinMaxRatio)
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{
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double number = Math.Ceiling(visibleMinMaxRatio * 4);
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number = Math.Pow(2, Math.Ceiling(Math.Log(number) / Math.Log(2)));
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double delta = totalDelta / number;
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double x = collection.Min + Math.Ceiling((visibleMinMax.Min - collection.Min) / delta) * delta;
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List<double> result = new List<double>();
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while (x < visibleMinMax.Max)
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{
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result.Add(x);
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x += delta;
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}
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return result;
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}
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return Enumerable.Empty<double>();
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}
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protected void RenderIsolineCollection(DrawingContext dc, double strokeThickness, IsolineCollection collection, CoordinateTransform transform)
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{
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foreach (LevelLine line in collection)
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{
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StreamGeometry lineGeometry = new StreamGeometry();
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using (var context = lineGeometry.Open())
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{
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context.BeginFigure(line.StartPoint.ViewportToScreen(transform), false, false);
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if (!UseBezierCurves)
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{
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context.PolyLineTo(line.OtherPoints.ViewportToScreen(transform).ToArray(), true, true);
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}
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else
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{
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context.PolyBezierTo(BezierBuilder.GetBezierPoints(line.AllPoints.ViewportToScreen(transform).ToArray()).Skip(1).ToArray(), true, true);
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}
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}
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lineGeometry.Freeze();
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Pen pen = new Pen(new SolidColorBrush(Palette.GetColor(line.Value01)), strokeThickness);
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dc.DrawGeometry(null, pen, lineGeometry);
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}
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}
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}
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}
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