private double GetAxis(IChartItem item, bool x, double axisSize) { if (this._axisData == null) { return(double.NaN); } object obj = ChartHelper.GetChartItemAxisValue(item, x); if (item == null) { return(double.NaN); } double value = ChartHelper.ConvertToDouble(obj); if (!ChartHelper.DoubleHasValue(value)) { return(double.NaN); } double result = axisSize * (value - this._axisData.MinValue) / this._axisData.Area; if (base.Orientation == AxisLabelOrientation.BottomToTop || base.Orientation == AxisLabelOrientation.RightToLeft) { result = axisSize - result; } return(result); }
private double GetAxis(IChartItem item, bool x, double axisSize) { if (this._axisData == null) { return(double.NaN); } object obj = ChartHelper.GetChartItemAxisValue(item, x); if (item == null) { return(double.NaN); } DateTime?value = ChartHelper.ConvertToDateTime(obj); if (value == null) { return(double.NaN); } //计算AxisOrientation.LeftToRight或TopToBottom double result = axisSize * (value.Value - this._axisData.MinValue).TotalMilliseconds / this._axisData.Area.TotalMilliseconds; if (base.Orientation == AxisLabelOrientation.RightToLeft || base.Orientation == AxisLabelOrientation.BottomToTop) { result = axisSize - result; } return(result); }