/// <summary>
/// Calculate the <see cref="RectangleF"/> that will be used to define the bounding rectangle of
/// the GasGaugeNeedle.
/// </summary>
/// <remarks>This rectangle always lies inside of the <see cref="Chart.Rect"/>, and it is
/// normally a square so that the pie itself is not oval-shaped.</remarks>
/// <param name="g">
/// A graphic device object to be drawn into. This is normally e.Graphics from the
/// PaintEventArgs argument to the Paint() method.
/// </param>
/// <param name="pane">
/// A reference to the <see cref="ZedGraph.GraphPane"/> object that is the parent or
/// owner of this object.
/// </param>
/// <param name="scaleFactor">
/// The scaling factor to be used for rendering objects. This is calculated and
/// passed down by the parent <see cref="ZedGraph.GraphPane"/> object using the
/// <see cref="PaneBase.CalcScaleFactor"/> method, and is used to proportionally adjust
/// font sizes, etc. according to the actual size of the graph.
/// </param>
/// <param name="chartRect">The <see cref="RectangleF"/> (normally the <see cref="Chart.Rect"/>)
/// that bounds this pie.</param>
/// <returns></returns>
public static RectangleF CalcRectangle(Graphics g, GraphPane pane, float scaleFactor, RectangleF chartRect)
{
RectangleF nonExpRect = chartRect;
nonExpRect.Height -= pane.GasGaugeRegionWidth / 2;
nonExpRect.Width -= pane.GasGaugeRegionWidth;
float width = nonExpRect.Width;
float height;
double sineVal = Math.Sin((Math.PI / 180) * ((pane.Angle - 180) / 2));
//take at least half a circle
if (pane.Angle <= 180)
{
height = (width / 2);
}
else
{
height = (float)((width / 2) + ((width / 2) * sineVal));
nonExpRect.Height -= (float)(pane.GasGaugeRegionWidth / 2 * sineVal);
}
height *= 1.05f;
float ratio = width / height;
if ((ratio * nonExpRect.Height) > nonExpRect.Width)
{
//Scale based on width
nonExpRect.Height = nonExpRect.Width;
}
else
{
//Scale based on heights
nonExpRect.Width = nonExpRect.Height * ratio;
nonExpRect.Height = nonExpRect.Width;
}
//define the place on the pane
nonExpRect.X = (pane.Rect.Width - nonExpRect.Width) / 2;
nonExpRect.Y = pane.Chart.Rect.Top + pane.GasGaugeRegionWidth / 2;
GasGaugeRegion.CalculateGasGuageParameters(pane);
foreach (CurveItem curve in pane.CurveList)
{
if (curve is GasGaugeRegion)
{
GasGaugeRegion gg = (GasGaugeRegion)curve;
gg._boundingRectangle = nonExpRect;
}
}
return(nonExpRect);
}
/// <summary>
/// Calculate the <see cref="RectangleF"/> that will be used to define the bounding rectangle of
/// the GasGaugeNeedle.
/// </summary>
/// <remarks>This rectangle always lies inside of the <see cref="Chart.Rect"/>, and it is
/// normally a square so that the pie itself is not oval-shaped.</remarks>
/// <param name="g">
/// A graphic device object to be drawn into. This is normally e.Graphics from the
/// PaintEventArgs argument to the Paint() method.
/// </param>
/// <param name="pane">
/// A reference to the <see cref="ZedGraph.GraphPane"/> object that is the parent or
/// owner of this object.
/// </param>
/// <param name="scaleFactor">
/// The scaling factor to be used for rendering objects. This is calculated and
/// passed down by the parent <see cref="ZedGraph.GraphPane"/> object using the
/// <see cref="PaneBase.CalcScaleFactor"/> method, and is used to proportionally adjust
/// font sizes, etc. according to the actual size of the graph.
/// </param>
/// <param name="chartRect">The <see cref="RectangleF"/> (normally the <see cref="Chart.Rect"/>)
/// that bounds this pie.</param>
/// <returns></returns>
public static RectangleF CalcRectangle(Graphics g, GraphPane pane, float scaleFactor, RectangleF chartRect)
{
RectangleF nonExpRect = chartRect;
if ((2 * nonExpRect.Height) > nonExpRect.Width)
{
//Scale based on width
float percentS = ((nonExpRect.Height * 2) - nonExpRect.Width) / (nonExpRect.Height * 2);
nonExpRect.Height = ((nonExpRect.Height * 2) - ((nonExpRect.Height * 2) * percentS));
}
else
{
nonExpRect.Height = nonExpRect.Height * 2;
}
nonExpRect.Width = nonExpRect.Height;
float xDelta = (chartRect.Width / 2) - (nonExpRect.Width / 2);
//Align Horizontally
nonExpRect.X += xDelta;
//nonExpRect.Y += -(float)0.025F * nonExpRect.Height;
//nonExpRect.Y += ((chartRect.Height) - (nonExpRect.Height / 2)) - 10.0f;
nonExpRect.Inflate(-(float)0.05F * nonExpRect.Height, -(float)0.05 * nonExpRect.Width);
GasGaugeRegion.CalculateGasGuageParameters(pane);
foreach (CurveItem curve in pane.CurveList)
{
if (curve is GasGaugeRegion)
{
GasGaugeRegion gg = (GasGaugeRegion)curve;
gg._boundingRectangle = nonExpRect;
}
}
return(nonExpRect);
}
