lt.monarch.chart.chart2D.series
Class SplineStrategy<ChartProjector extends Projector>

java.lang.Object
  lt.monarch.chart.chart2D.series.AbstractLineStrategy<ChartProjector>
      lt.monarch.chart.chart2D.series.LineStrategy<ChartProjector>
          lt.monarch.chart.chart2D.series.SplineStrategy<ChartProjector>

All Implemented Interfaces:

java.io.Serializable, AbstractStrategy

Direct Known Subclasses:

NullSplineStrategy

public class SplineStrategy<ChartProjector extends Projector>
extends LineStrategy<ChartProjector>

In this strategy all null point values are skipped and cannot be displayed in any way.

See Also:

Serialized Form

Nested Class Summary

Modifier and Type	Class and Description
protected static class	SplineStrategy.SplinePolygon

Field Summary

Modifier and Type	Field and Description
protected java.lang.Double	end
protected AbstractSpline	splineStrategy
protected java.lang.Double	start
protected int	step Step count

Fields inherited from class lt.monarch.chart.chart2D.series.LineStrategy

bottomPolygon, firstX, isSortedSeries, lastX, lineOrientation, polygon, pseudoModel

Fields inherited from class lt.monarch.chart.chart2D.series.AbstractLineStrategy

baseValue, cachingEnabled, dirty, isConnected, mapper, metaModel, minMaxValues, model, paintMode, planePoint, projector, showNullValues, style, tempPoint, xMapper, yMapper, zoomMultiplier

Constructor and Description

SplineStrategy()
Default spline strategy constructor

Method Summary

Modifier and Type	Method and Description
protected void	addPoint(Projector projector, GeneralPoint tempPoint, Point2D planePoint, Polygon2D polygon, double x, double y) Adds points to the polygon
protected java.util.List<SplineStrategy.SplinePolygon>	calculatePoints(AbstractGraphics g, AbstractSpline splineStrategy, ArrayDataModel model, PseudoArrayDataModel pseudoModel) Paints the spline series in the specified Graphics context.
void	dispose() Disposes the object
protected void	drawLine(AbstractGraphics g, AbstractLineSeries<ChartProjector> series) Paints the connected series line in the specified Graphics context.
protected void	drawLineAndFill(AbstractGraphics g, Projector projector, SplineStrategy.SplinePolygon spline, SplineStrategy.SplinePolygon bottomSpline, AbstractLineSeries<ChartProjector> series) Draws the polyline and toFill polygon
protected void	finalize()
Point2D	getLinePointByX(double x) Calculates line Point2D value for a given x coordinate.
AbstractSpline	getSplineStrategy() Gets spline implementation strategy
int	getStep() Gets spline step number
java.lang.Object	getYValue(java.lang.Object x) Calculates spline Y value for a given X value.
java.lang.Object[]	getYValues(java.lang.Object x) Calculates spline Y values for a given X value.
void	setSplineStrategy(AbstractSpline splineStrategy) Sets spline implementation strategy, which defines the points of the spline.
void	setStep(int step) Sets the spline step number, i.e.
protected boolean	showNullPoints() Checks and returns if user has set nullLineColor or nullFillColor objects.

Methods inherited from class lt.monarch.chart.chart2D.series.LineStrategy

binarySearch, cacheLines, determineLineDirection, draw, formNewPolygon, getDataValueMappingHeight, getEndIndex, getPointPosition, getStartIndex, getValue, initDrawing, isDataInverted, isStacked

Methods inherited from class lt.monarch.chart.chart2D.series.AbstractLineStrategy

calculateSelection, getMinMaxValues, getModel, getX, getY, projectPoint

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

splineStrategy

protected AbstractSpline splineStrategy

step

protected int step

Step count

start

protected java.lang.Double start

end

protected java.lang.Double end

Constructor Detail

SplineStrategy

public SplineStrategy()

Default spline strategy constructor

Method Detail

drawLine

protected void drawLine(AbstractGraphics g,
                        AbstractLineSeries<ChartProjector> series)

Description copied from class: LineStrategy

Paints the connected series line in the specified Graphics context.

Overrides:

drawLine in class LineStrategy<ChartProjector extends Projector>

Parameters:

g - the Graphics context in which to paint the series line. NOTE: setShowNullValues(boolean) works a little different here. When set to true, the line is broken and started from the next non-null point value. When set to false, the null values are simply ignored: the line connects all non-null value points.

series - Chart series to which this strategy belongs

See Also:

AbstractChartSeries.setShowNullValues(boolean)

calculatePoints

protected java.util.List<SplineStrategy.SplinePolygon> calculatePoints(AbstractGraphics g,
                                                                       AbstractSpline splineStrategy,
                                                                       ArrayDataModel model,
                                                                       PseudoArrayDataModel pseudoModel)

Paints the spline series in the specified Graphics context.

Parameters:

g - the Graphics context in which to paint the series

splineStrategy - spline drawing strategy (i.e. the AbstractSpline implementation)

model - data model of the spline

pseudoModel - pseudo data model of the spline, for null determination

Returns:

returns array of polygons and specifies if the polygon is null

addPoint

protected void addPoint(Projector projector,
                        GeneralPoint tempPoint,
                        Point2D planePoint,
                        Polygon2D polygon,
                        double x,
                        double y)

Adds points to the polygon

Parameters:

projector - Projector

tempPoint - Normalized point

planePoint - Point

polygon - Polygon which will be drawn

x - X coordinate

y - Y coordinate

drawLineAndFill

protected void drawLineAndFill(AbstractGraphics g,
                               Projector projector,
                               SplineStrategy.SplinePolygon spline,
                               SplineStrategy.SplinePolygon bottomSpline,
                               AbstractLineSeries<ChartProjector> series)

Draws the polyline and toFill polygon

Parameters:

g - Graphics

projector - Projector

area - Polygon points

bottomPolygon - bottom polygon

first - First x point

last - Last x point

series - Chart series to which this strategy belongs

getYValue

public java.lang.Object getYValue(java.lang.Object x)

Calculates spline Y value for a given X value.

Parameters:

x - value for which the corresponding y value must be calculated.

Returns:

y calculated spline value

getLinePointByX

public Point2D getLinePointByX(double x)

Description copied from class: AbstractLineStrategy

Calculates line Point2D value for a given x coordinate.

Overrides:

getLinePointByX in class LineStrategy<ChartProjector extends Projector>

Parameters:

x - coordinate for which the corresponding line point must be calculated.

Returns:

y calculated line value

getYValues

public java.lang.Object[] getYValues(java.lang.Object x)

Calculates spline Y values for a given X value.

Parameters:

x - value for which the corresponding y value must be calculated.

Returns:

y calculated spline values (an array)

showNullPoints

protected boolean showNullPoints()

Description copied from class: LineStrategy

Checks and returns if user has set nullLineColor or nullFillColor objects. This means that user would like to see the probable values instead of nulls (if it is possible).

Overrides:

showNullPoints in class LineStrategy<ChartProjector extends Projector>

Returns:

boolean showing that null values should be drawn.

finalize

protected void finalize()
                 throws java.lang.Throwable

Overrides:

finalize in class java.lang.Object

Throws:

java.lang.Throwable

dispose

public void dispose()

Description copied from class: AbstractLineStrategy

Disposes the object

Overrides:

dispose in class LineStrategy<ChartProjector extends Projector>

getSplineStrategy

public AbstractSpline getSplineStrategy()

Gets spline implementation strategy

Returns:

the spline implementation strategy

setSplineStrategy

public void setSplineStrategy(AbstractSpline splineStrategy)

Sets spline implementation strategy, which defines the points of the spline.

Parameters:

splineStrategy - the spline implementation strategy

getStep

public int getStep()

Gets spline step number

Returns:

the step number

setStep

public void setStep(int step)

Sets the spline step number, i.e. how much lines should consist the line between two points.

Parameters:

step - line number between two data points