/// <summary>
/// Calculate ControlPoints of a DataPoint
/// </summary>
/// <param name="dataPoint">DataPoint</param>
/// <param name="minimumZVal">Minimum ZValue</param>
/// <param name="maximumZVal">Maximum ZValue</param>
/// <param name="axisX">AxisX</param>
/// <param name="axisY">AxisY</param>
/// <returns></returns>
private static List <Point> CalculateControlPointsOfDataPoint(DataPoint dataPoint, PlotGroup plotGroup, Double maxBubbleRadius, Double minimumZVal, Double maximumZVal, Axis axisX, Axis axisY)
{
Chart chart = dataPoint.Chart as Chart;
List <Point> ctPoints = new List <Point>();
if (chart != null && axisX != null && axisY != null)
{
Double leftRightOffset = 4; // One Pixel
Double topBottomOffset = 4; // One Pixel
Size initialPlotAreaSize = new Size(plotGroup._intialAxisXWidth, plotGroup._intialAxisYHeight);
Double xPosition = Graphics.ValueToPixelPosition(0, initialPlotAreaSize.Width, (Double)plotGroup._initialAxisXMin, (Double)plotGroup._initialAxisXMax, dataPoint.InternalXValue);
Double yPosition = Graphics.ValueToPixelPosition(initialPlotAreaSize.Height, 0, (Double)plotGroup._initialAxisYMin, (Double)plotGroup._initialAxisYMax, dataPoint.InternalYValue);
if (axisY.Logarithmic)
{
Double yValueInLog = Graphics.PixelPositionToValue(initialPlotAreaSize.Height, 0, plotGroup._initialAxisYMin, plotGroup._initialAxisYMax, yPosition);
Double actualYValue = DataPoint.ConvertLogarithmicValue2ActualValue(chart, yValueInLog, axisY.AxisType);
Point pointLeft = new Point(
Graphics.PixelPositionToValue(0, initialPlotAreaSize.Width, plotGroup._initialAxisXMin, plotGroup._initialAxisXMax, xPosition - (maxBubbleRadius + leftRightOffset))
, actualYValue);
// Calculate right point of bubble in terms of XValue and YValue
Point pointRight = new Point(
Graphics.PixelPositionToValue(0, initialPlotAreaSize.Width, plotGroup._initialAxisXMin, plotGroup._initialAxisXMax, xPosition + (maxBubbleRadius + leftRightOffset))
, actualYValue);
yValueInLog = Graphics.PixelPositionToValue(initialPlotAreaSize.Height, 0, plotGroup._initialAxisYMin, plotGroup._initialAxisYMax, yPosition - (maxBubbleRadius + topBottomOffset));
actualYValue = DataPoint.ConvertLogarithmicValue2ActualValue(chart, yValueInLog, axisY.AxisType);
// Calculate top point of bubble in terms of XValue and YValue
Point pointTop = new Point(
Graphics.PixelPositionToValue(0, initialPlotAreaSize.Width, plotGroup._initialAxisXMin, plotGroup._initialAxisXMax, xPosition)
, actualYValue);
yValueInLog = Graphics.PixelPositionToValue(initialPlotAreaSize.Height, 0, plotGroup._initialAxisYMin, plotGroup._initialAxisYMax, yPosition + (maxBubbleRadius + topBottomOffset));
actualYValue = DataPoint.ConvertLogarithmicValue2ActualValue(chart, yValueInLog, axisY.AxisType);
// Calculate bottom point of bubble in terms of XValue and YValue
Point pointBottom = new Point(
Graphics.PixelPositionToValue(0, initialPlotAreaSize.Width, plotGroup._initialAxisXMin, plotGroup._initialAxisXMax, xPosition)
, actualYValue);
ctPoints.Add(pointLeft);
ctPoints.Add(pointRight);
ctPoints.Add(pointTop);
ctPoints.Add(pointBottom);
}
else
{
// Calculate left point of bubble in terms of XValue and YValue
Point pointLeft = new Point(
Graphics.PixelPositionToValue(0, initialPlotAreaSize.Width, plotGroup._initialAxisXMin, plotGroup._initialAxisXMax, xPosition - (maxBubbleRadius + leftRightOffset))
, Graphics.PixelPositionToValue(0, initialPlotAreaSize.Height, plotGroup._initialAxisYMin, plotGroup._initialAxisYMax, yPosition));
// Calculate right point of bubble in terms of XValue and YValue
Point pointRight = new Point(
Graphics.PixelPositionToValue(0, initialPlotAreaSize.Width, plotGroup._initialAxisXMin, plotGroup._initialAxisXMax, xPosition + (maxBubbleRadius + leftRightOffset))
, Graphics.PixelPositionToValue(0, initialPlotAreaSize.Height, plotGroup._initialAxisYMin, plotGroup._initialAxisYMax, yPosition));
// Calculate top point of bubble in terms of XValue and YValue
Point pointTop = new Point(
Graphics.PixelPositionToValue(0, initialPlotAreaSize.Width, plotGroup._initialAxisXMin, plotGroup._initialAxisXMax, xPosition)
, Graphics.PixelPositionToValue(initialPlotAreaSize.Height, 0, plotGroup._initialAxisYMin, plotGroup._initialAxisYMax, yPosition - (maxBubbleRadius + topBottomOffset)));
// Calculate bottom point of bubble in terms of XValue and YValue
Point pointBottom = new Point(
Graphics.PixelPositionToValue(0, initialPlotAreaSize.Width, plotGroup._initialAxisXMin, plotGroup._initialAxisXMax, xPosition)
, Graphics.PixelPositionToValue(initialPlotAreaSize.Height, 0, plotGroup._initialAxisYMin, plotGroup._initialAxisYMax, yPosition + (maxBubbleRadius + topBottomOffset)));
ctPoints.Add(pointLeft);
ctPoints.Add(pointRight);
ctPoints.Add(pointTop);
ctPoints.Add(pointBottom);
}
}
return(ctPoints);
}
