/// <summary>
/// Select a reasonable ordinal axis scale given a range of data values, with the expectation that
/// dates will be displayed.
/// </summary>
/// <remarks>
/// This method only applies to <see c_ref="AxisType.DateAsOrdinal"/> type axes, and it
/// is called by the general <see c_ref="PickScale"/> method. For this type,
/// the first curve is the "master", which contains the dates to be applied.
/// <para>On Exit:</para>
/// <para><see c_ref="Scale.Min"/> is set to scale minimum (if <see c_ref="Scale.MinAuto"/> = true)</para>
/// <para><see c_ref="Scale.Max"/> is set to scale maximum (if <see c_ref="Scale.MaxAuto"/> = true)</para>
/// <para><see c_ref="Scale.MajorStep"/> is set to scale step size (if <see c_ref="Scale.MajorStepAuto"/> = true)</para>
/// <para><see c_ref="Scale.MinorStep"/> is set to scale minor step size (if <see c_ref="Scale.MinorStepAuto"/> = true)</para>
/// <para><see c_ref="Scale.Mag"/> is set to a magnitude multiplier according to the data</para>
/// <para><see c_ref="Scale.Format"/> is set to the display format for the values (this controls the
/// number of decimal places, whether there are thousands separators, currency types, etc.)</para>
/// </remarks>
/// <param name="pane">A reference to the <see c_ref="GraphPane"/> object
/// associated with this <see c_ref="Axis"/></param>
/// <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="scaleFactor">
/// The scaling factor to be used for rendering objects. This is calculated and
/// passed down by the parent <see c_ref="GraphPane"/> object using the
/// <see c_ref="PaneBase.CalcScaleFactor"/> method, and is used to proportionally adjust
/// font sizes, etc. according to the actual size of the graph.
/// </param>
/// <seealso c_ref="PickScale"/>
/// <seealso c_ref="AxisType.Ordinal"/>
override public void PickScale(GraphPane pane, Graphics g, float scaleFactor)
{
// call the base class first
base.PickScale(pane, g, scaleFactor);
/* // First, get the date ranges from the first curve in the list
* double xMin; // = Double.MaxValue;
* double xMax; // = Double.MinValue;
* double yMin; // = Double.MaxValue;
* double yMax; // = Double.MinValue;
* double range = 1;
*
* foreach ( CurveItem curve in pane.CurveList )
* {
* if ( ( _ownerAxis is Y2Axis && curve.IsY2Axis ) ||
* ( _ownerAxis is YAxis && !curve.IsY2Axis ) ||
* ( _ownerAxis is X2Axis && curve.IsX2Axis ) ||
* ( _ownerAxis is XAxis && !curve.IsX2Axis ) )
* {
* curve.GetRange( out xMin, out xMax, out yMin, out yMax, false, pane.IsBoundedRanges, pane );
* if ( _ownerAxis is XAxis || _ownerAxis is X2Axis )
* range = xMax - xMin;
* else
* range = yMax - yMin;
* }
* }
*/
// Set the DateFormat by calling CalcDateStepSize
// DateScale.CalcDateStepSize( range, Default.TargetXSteps, this );
SetDateFormat(pane);
// Now, set the axis range based on a ordinal scale
base.PickScale(pane, g, scaleFactor);
OrdinalScale.PickScale(pane, g, scaleFactor, this);
}
/// <summary>
/// Select a reasonable ordinal axis scale given a range of data values, with the expectation that
/// linear values will be displayed.
/// </summary>
/// <remarks>
/// This method only applies to <see c_ref="AxisType.DateAsOrdinal"/> type axes, and it
/// is called by the general <see c_ref="Scale.PickScale"/> method. For this type,
/// the first curve is the "master", which contains the dates to be applied.
/// <para>On Exit:</para>
/// <para><see c_ref="Scale.Min"/> is set to scale minimum (if <see c_ref="Scale.MinAuto"/> = true)</para>
/// <para><see c_ref="Scale.Max"/> is set to scale maximum (if <see c_ref="Scale.MaxAuto"/> = true)</para>
/// <para><see c_ref="Scale.MajorStep"/> is set to scale step size (if <see c_ref="Scale.MajorStepAuto"/> = true)</para>
/// <para><see c_ref="Scale.MinorStep"/> is set to scale minor step size (if <see c_ref="Scale.MinorStepAuto"/> = true)</para>
/// <para><see c_ref="Scale.Mag"/> is set to a magnitude multiplier according to the data</para>
/// <para><see c_ref="Scale.Format"/> is set to the display format for the values (this controls the
/// number of decimal places, whether there are thousands separators, currency types, etc.)</para>
/// </remarks>
/// <param name="pane">A reference to the <see c_ref="GraphPane"/> object
/// associated with this <see c_ref="Axis"/></param>
/// <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="scaleFactor">
/// The scaling factor to be used for rendering objects. This is calculated and
/// passed down by the parent <see c_ref="GraphPane"/> object using the
/// <see c_ref="PaneBase.CalcScaleFactor"/> method, and is used to proportionally adjust
/// font sizes, etc. according to the actual size of the graph.
/// </param>
/// <seealso c_ref="PickScale"/>
/// <seealso c_ref="AxisType.Ordinal"/>
override public void PickScale(GraphPane pane, Graphics g, float scaleFactor)
{
// call the base class first
base.PickScale(pane, g, scaleFactor);
// First, get the date ranges from the first curve in the list
double xMin; // = Double.MaxValue;
double xMax; // = Double.MinValue;
double yMin; // = Double.MaxValue;
double yMax; // = Double.MinValue;
double tMin = 0;
double tMax = 1;
foreach (CurveItem curve in pane.CurveList)
{
if ((_ownerAxis is Y2Axis && curve.IsY2Axis) ||
(_ownerAxis is YAxis && !curve.IsY2Axis) ||
(_ownerAxis is X2Axis && curve.IsX2Axis) ||
(_ownerAxis is XAxis && !curve.IsX2Axis))
{
curve.GetRange(out xMin, out xMax, out yMin, out yMax, false, false, pane);
if (_ownerAxis is XAxis || _ownerAxis is X2Axis)
{
tMin = xMin;
tMax = xMax;
}
else
{
tMin = yMin;
tMax = yMax;
}
}
}
double range = Math.Abs(tMax - tMin);
// Now, set the axis range based on a ordinal scale
base.PickScale(pane, g, scaleFactor);
OrdinalScale.PickScale(pane, g, scaleFactor, this);
SetScaleMag(tMin, tMax, range / Default.TargetXSteps);
}