/// <summary>
/// Draw all the <see cref="ErrorBar"/>'s to the specified <see cref="Graphics"/>
/// device as a an error bar at each defined point.
/// </summary>
/// <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="GraphPane"/> object that is the parent or
/// owner of this object.
/// </param>
/// <param name="curve">A <see cref="CurveItem"/> object representing the
/// <see cref="Bar"/>'s to be drawn.</param>
/// <param name="baseAxis">The <see cref="Axis"/> class instance that defines the base (independent)
/// axis for the <see cref="Bar"/></param>
/// <param name="valueAxis">The <see cref="Axis"/> class instance that defines the value (dependent)
/// axis for the <see cref="Bar"/></param>
/// <param name="scaleFactor">
/// The scaling factor to be used for rendering objects. This is calculated and
/// passed down by the parent <see cref="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>
public void Draw( Graphics g, GraphPane pane, ErrorBarItem curve,
Axis baseAxis, Axis valueAxis, float scaleFactor )
{
ValueHandler valueHandler = new ValueHandler( pane, false );
float pixBase, pixValue, pixLowValue;
double scaleBase, scaleValue, scaleLowValue;
if ( curve.Points != null && this.IsVisible )
{
using ( Pen pen = !curve.IsSelected ? new Pen( _color, _penWidth ) :
new Pen( Selection.Border.Color, Selection.Border.Width ) )
{
// Loop over each defined point
for ( int i = 0; i < curve.Points.Count; i++ )
{
valueHandler.GetValues( curve, i, out scaleBase,
out scaleLowValue, out scaleValue );
// Any value set to double max is invalid and should be skipped
// This is used for calculated values that are out of range, divide
// by zero, etc.
// Also, any value <= zero on a log scale is invalid
if ( !curve.Points[i].IsInvalid3D &&
( scaleBase > 0 || !baseAxis._scale.IsLog ) &&
( ( scaleValue > 0 && scaleLowValue > 0 ) || !valueAxis._scale.IsLog ) )
{
pixBase = baseAxis.Scale.Transform( curve.IsOverrideOrdinal, i, scaleBase );
pixValue = valueAxis.Scale.Transform( curve.IsOverrideOrdinal, i, scaleValue );
pixLowValue = valueAxis.Scale.Transform( curve.IsOverrideOrdinal, i, scaleLowValue );
//if ( this.fill.IsGradientValueType )
// brush = fill.MakeBrush( _rect, _points[i] );
this.Draw( g, pane, baseAxis is XAxis || baseAxis is X2Axis, pixBase, pixValue,
pixLowValue, scaleFactor, pen, curve.IsSelected,
curve.Points[i] );
}
}
}
}
}
/// <summary>
/// Add an error bar set (<see cref="ErrorBarItem"/> object) to the plot with
/// the given data points (<see cref="IPointList"/>) and properties.
/// This is simplified way to add curves without knowledge of the
/// <see cref="CurveList"/> class. An alternative is to use
/// the <see cref="ZeeGraph.CurveList" /> Add() method.
/// </summary>
/// <param name="label">The text label (string) for the curve that will be
/// used as a <see cref="Legend"/> entry.</param>
/// <param name="x">An array of double precision X values (the
/// independent values) that define the curve.</param>
/// <param name="y">An array of double precision Y values (the
/// dependent values) that define the curve.</param>
/// <param name="baseValue">An array of double precision values that define the
/// base value (the bottom) of the bars for this curve.
/// </param>
/// <param name="color">The color to used for the curve line,
/// symbols, etc.</param>
/// <returns>An <see cref="ErrorBarItem"/> class for the newly created curve.
/// This can then be used to access all of the curve properties that
/// are not defined as arguments to the
/// <see cref="AddErrorBar(string,IPointList,Color)"/> method.</returns>
public ErrorBarItem AddErrorBar( string label, double[] x, double[] y,
double[] baseValue, Color color )
{
ErrorBarItem curve = new ErrorBarItem( label, new PointPairList( x, y, baseValue ),
color );
_curveList.Add( curve );
return curve;
}
/// <summary>
/// Add an error bar set (<see cref="ErrorBarItem"/> object) to the plot with
/// the given data points (<see cref="IPointList"/>) and properties.
/// This is simplified way to add curves without knowledge of the
/// <see cref="CurveList"/> class. An alternative is to use
/// the <see cref="ZeeGraph.CurveList" /> Add() method.
/// </summary>
/// <param name="label">The text label (string) for the curve that will be
/// used as a <see cref="Legend"/> entry.</param>
/// <param name="points">A <see cref="IPointList"/> of double precision value pairs that define
/// the X and Y values for this curve</param>
/// <param name="color">The color to used for the curve line,
/// symbols, etc.</param>
/// <returns>An <see cref="ErrorBarItem"/> class for the newly created curve.
/// This can then be used to access all of the curve properties that
/// are not defined as arguments to the
/// <see cref="AddErrorBar(string,IPointList,Color)"/> method.</returns>
public ErrorBarItem AddErrorBar( string label, IPointList points, Color color )
{
ErrorBarItem curve = new ErrorBarItem( label, points, color );
_curveList.Add( curve );
return curve;
}
/// <summary>
/// The Copy Constructor
/// </summary>
/// <param name="rhs">The <see cref="ErrorBarItem"/> object from which to copy</param>
public ErrorBarItem( ErrorBarItem rhs )
: base(rhs)
{
_bar = new ErrorBar( rhs.Bar );
}