添加项目文件。

Live-Charts-master/Core/SeriesAlgorithms/ScatterAlgorithm.cs

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+//The MIT License(MIT)
+
+//Copyright(c) 2016 Alberto Rodriguez & LiveCharts Contributors
+
+//Permission is hereby granted, free of charge, to any person obtaining a copy
+//of this software and associated documentation files (the "Software"), to deal
+//in the Software without restriction, including without limitation the rights
+//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//copies of the Software, and to permit persons to whom the Software is
+//furnished to do so, subject to the following conditions:
+
+//The above copyright notice and this permission notice shall be included in all
+//copies or substantial portions of the Software.
+
+//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//SOFTWARE.
+
+using LiveCharts.Defaults;
+using LiveCharts.Definitions.Points;
+using LiveCharts.Definitions.Series;
+using LiveCharts.Dtos;
+
+namespace LiveCharts.SeriesAlgorithms
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <seealso cref="LiveCharts.SeriesAlgorithm" />
+    /// <seealso cref="LiveCharts.Definitions.Series.ICartesianSeries" />
+    public class ScatterAlgorithm : SeriesAlgorithm, ICartesianSeries
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ScatterAlgorithm"/> class.
+        /// </summary>
+        /// <param name="view">The view.</param>
+        public ScatterAlgorithm(ISeriesView view) : base(view)
+        {
+            PreferredSelectionMode = TooltipSelectionMode.OnlySender;
+        }
+
+        /// <summary>
+        /// Updates this instance.
+        /// </summary>
+        public override void Update()
+        {
+            var bubbleSeries = (IScatterSeriesView) View;
+
+            var p1 = new CorePoint();
+            var p2 = new CorePoint();
+
+            p1.X = Chart.WLimit.Max;
+            p1.Y = bubbleSeries.MaxPointShapeDiameter;
+
+            p2.X = Chart.WLimit.Min;
+            p2.Y = bubbleSeries.MinPointShapeDiameter;
+
+            var deltaX = p2.X - p1.X;
+            // ReSharper disable once CompareOfFloatsByEqualityOperator
+            var m = (p2.Y - p1.Y) / (deltaX == 0 ? double.MinValue : deltaX);
+
+            var uw = new CorePoint(
+                    CurrentXAxis.EvaluatesUnitWidth
+                        ? ChartFunctions.GetUnitWidth(AxisOrientation.X, Chart, View.ScalesXAt) / 2
+                        : 0,
+                    CurrentYAxis.EvaluatesUnitWidth
+                        ? ChartFunctions.GetUnitWidth(AxisOrientation.Y, Chart, View.ScalesYAt) / 2
+                        : 0);
+
+            foreach (var chartPoint in View.ActualValues.GetPoints(View))
+            {
+                chartPoint.ChartLocation = ChartFunctions.ToDrawMargin(
+                    chartPoint, View.ScalesXAt, View.ScalesYAt, Chart) + uw;
+
+                chartPoint.SeriesView = View;
+
+                chartPoint.View = View.GetPointView(chartPoint,
+                    View.DataLabels ? View.GetLabelPointFormatter()(chartPoint) : null);
+
+                var bubbleView = (IScatterPointView) chartPoint.View;
+
+                bubbleView.Diameter = m*(chartPoint.Weight - p1.X) + p1.Y;
+
+                chartPoint.View.DrawOrMove(null, chartPoint, 0, Chart);
+            }
+        }
+
+        double ICartesianSeries.GetMinX(AxisCore axis)
+        {
+            return AxisLimits.StretchMin(axis);
+        }
+
+        double ICartesianSeries.GetMaxX(AxisCore axis)
+        {
+            return AxisLimits.StretchMax(axis);
+        }
+
+        double ICartesianSeries.GetMinY(AxisCore axis)
+        {
+            return AxisLimits.StretchMin(axis);
+        }
+
+        double ICartesianSeries.GetMaxY(AxisCore axis)
+        {
+            return AxisLimits.StretchMax(axis);
+        }
+    }
+}