项目结构调整

Others/Live-Charts-master/UwpView/Extentions.cs

@@ -0,0 +1,83 @@
+using System.Linq;
+using Windows.Foundation;
+using LiveCharts.Dtos;
+using LiveCharts.Uwp.Charts.Base;
+
+namespace LiveCharts.Uwp
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    public static class Extentions
+    {
+        /// <summary>
+        /// Converts a point at screen to chart values scale
+        /// </summary>
+        /// <param name="chart">Target chart</param>
+        /// <param name="screenPoint">point in screen</param>
+        /// <param name="axisX">axis x index</param>
+        /// <param name="axisY">axis y index</param>
+        /// <returns></returns>
+        public static Point ConvertToChartValues(this Chart chart, Point screenPoint, int axisX = 0, int axisY = 0)
+        {
+            if (chart.Model == null || chart.AxisX == null || chart.AxisX.Any(x => x.Model == null)) return new Point();
+
+            var uw = new CorePoint(
+                chart.AxisX[axisX].Model.EvaluatesUnitWidth
+                    ? ChartFunctions.GetUnitWidth(AxisOrientation.X, chart.Model, axisX)/2
+                    : 0,
+                chart.AxisY[axisY].Model.EvaluatesUnitWidth
+                    ? ChartFunctions.GetUnitWidth(AxisOrientation.Y, chart.Model, axisY)/2
+                    : 0);
+
+            return new Point(
+                ChartFunctions.FromPlotArea(screenPoint.X - uw.X, AxisOrientation.X, chart.Model, axisX),
+                ChartFunctions.FromPlotArea(screenPoint.Y - uw.Y, AxisOrientation.Y, chart.Model, axisY));
+        }
+
+        /// <summary>
+        /// Converts a chart values pair to pixels
+        /// </summary>
+        /// <param name="chart">Target chart</param>
+        /// <param name="chartPoint">point in screen</param>
+        /// <param name="axisX">axis x index</param>
+        /// <param name="axisY">axis y index</param>
+        /// <returns></returns>
+        public static Point ConvertToPixels(this Chart chart, Point chartPoint, int axisX = 0, int axisY = 0)
+        {
+            if (chart.Model == null || chart.AxisX.Any(x => x.Model == null)) return new Point();
+
+            var uw = new CorePoint(
+                chart.AxisX[axisX].Model.EvaluatesUnitWidth
+                    ? ChartFunctions.GetUnitWidth(AxisOrientation.X, chart.Model, axisX) / 2
+                    : 0,
+                chart.AxisY[axisY].Model.EvaluatesUnitWidth
+                    ? ChartFunctions.GetUnitWidth(AxisOrientation.Y, chart.Model, axisY) / 2
+                    : 0);
+
+            return new Point(
+                ChartFunctions.ToPlotArea(chartPoint.X, AxisOrientation.X, chart.Model, axisX) + uw.X,
+                ChartFunctions.ToPlotArea(chartPoint.Y, AxisOrientation.Y, chart.Model, axisY) + uw.Y);
+        }
+
+        /// <summary>
+        /// Converts a ChartPoint to Point
+        /// </summary>
+        /// <param name="chartPoint">point to convert</param>
+        /// <returns></returns>
+        public static Point AsPoint(this ChartPoint chartPoint)
+        {
+            return new Point(chartPoint.X, chartPoint.Y);
+        }
+
+        /// <summary>
+        /// Converts a CorePoint to Point
+        /// </summary>
+        /// <param name="point">point to convert</param>
+        /// <returns></returns>
+        internal static Point AsPoint(this CorePoint point)
+        {
+            return new Point(point.X, point.Y);
+        }
+    }
+}