com.davisor.graphics.chart
Class BarFactory.BarMetrics

java.lang.Object
  com.davisor.graphics.chart.ChartFactory.ChartMetrics
      com.davisor.graphics.chart.AxisFactory.AxisMetrics
          com.davisor.graphics.chart.BarFactory.BarMetrics

Enclosing class:

BarFactory

public class BarFactory.BarMetrics

extends AxisFactory.AxisMetrics

BarMetrics implements bar chart spesific axis metrics. In particular, there is bar chart spesific relationship between plot offsets and core area size, since half of the edgemost bars in bar charts hang outside the core drawing area.

See Also:

computeCoreSize(int), getGroupSize(), setCoreSize(float[])

Field Summary

protected ChartAxis

categoryAxis

Fields inherited from class com.davisor.graphics.chart.AxisFactory.AxisMetrics

M_ax, M_axisOffset, M_ay, M_clip, M_coreSize, M_labelOffset, M_labelSize, M_majorEdge, M_markerOffset, M_markerSize, M_minorEdge, M_opposite, M_origo, M_plotOffset, M_reverse, M_rotSize, M_symbolOffset, M_titleOffset, M_titleSize

Fields inherited from class com.davisor.graphics.chart.ChartFactory.ChartMetrics

M_height, M_width

Constructor Summary

BarFactory.BarMetrics(ChartAxes axes, float chartWidth, float chartHeight, float[] titleSize, float[] labelSize, float[] markerSize, float[] axisOffset, float[] labelOffset, float[] markerOffset, float[] symbolOffset, float[] majorEdge, float[] minorEdge, float[] rotSize)
Creates a new internal axis info bundle.

Method Summary

protected void	computeCoreSize(int dim) Computes coordinate back area size.
float	getGroupSize() Gets bar group size for this metrics.
void	setCoreSize(float[] coreSize) Sets metrics core size.

Methods inherited from class com.davisor.graphics.chart.AxisFactory.AxisMetrics

clip, computeClip, getAxisOffset, getAxisSize, getAxisSize, getBackSize, getBottomMargin, getCoreSize, getLabelOffset, getLabelSize, getLeftMargin, getMajorEdge, getMajorMargin, getMargins, getMarkerOffset, getMarkerSize, getMinorEdge, getMinorMargin, getMinorMargin, getOrigo, getPlotOffset, getPlotSize, getPlotSize, getRightMargin, getRotSize, getRotSize, getSymbolOffset, getSymbolSize, getSymbolSize, getTitleOffset, getTitleSize, getTopMargin, getXOrient, getYOrient, init, isOpposite, modifySize, scale, scale, scaleToSize, setAxisOffset, setAxisSize, setLabelOffset, setLabelSize, setMajorEdge, setMarkerOffset, setMarkerSize, setMinorEdge, setMinorMargin, setOrigo, setOrigo, setPlotOffset, setPlotOffset, setPlotOffset, setRotSize, setSize, setSize, setSymbolOffset, setSymbolSize, setTitleOffset, setTitleSize, setXOrient, setYOrient, toString, x, y

Methods inherited from class com.davisor.graphics.chart.ChartFactory.ChartMetrics

add, getHeight, getSize, getWidth, setHeight, setWidth

Methods inherited from class java.lang.Object

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

Field Detail

categoryAxis

protected ChartAxis categoryAxis

Constructor Detail

BarFactory.BarMetrics

public BarFactory.BarMetrics(ChartAxes axes,
                             float chartWidth,
                             float chartHeight,
                             float[] titleSize,
                             float[] labelSize,
                             float[] markerSize,
                             float[] axisOffset,
                             float[] labelOffset,
                             float[] markerOffset,
                             float[] symbolOffset,
                             float[] majorEdge,
                             float[] minorEdge,
                             float[] rotSize)

Creates a new internal axis info bundle.

Parameters:

axes - chart axes

chartWidth - chart width, stricly within chart borders

chartHeight - chart height, stricly within chart borders

titleSize - title area size

labelSize - label area size

axisOffset - axis offsets

labelOffset - label offsets

symbolOffset - symbol offsets

majorEdge - major edge size

minorEdge - minor margin (see above)

rotSize - isometric area size

See Also:

AxisFactory.AxisMetrics.init(com.davisor.graphics.chart.ChartAxes, float[], float[], float[], float[], float[], float[], float[], float[], float[], float[])

Method Detail

computeCoreSize

protected void computeCoreSize(int dim)

Computes coordinate back area size. The size is whatever is left when 3D shear size and plot offsets are substracted from the total plot area size.

     Y

     |_:_ _:_     _:_
     | : | : |   | : |
     0-+---+--...--+-- X
       0   1       N
     <---------------> plotSize
       <----------->   coreSize
       <--->           groupSize  (= space between datapoints)
         <--->                    (= group width)
     <->               plotOffset (= plotSize / (N+1))
                   <->            (= groupSize / 2)
 

Please note, that if there is just one bar (N=0), groupSize becomes zero, and plotOffset will be equal to plotSize / 2.

     Y

     |_:_
     | : |
     0-+-- X
       0
     <---> plotSize
       .   coreSize
       .   groupSize  (= space between datapoints)
       .              (= group width)
     <->   plotOffset (= plotSize / (N+1))
       <->            (= groupSize / 2)
 

Bar chart metrics speciality is, that setting core size affects plot offset, too, as first and last bar hang half out.

Overrides:

computeCoreSize in class AxisFactory.AxisMetrics

See Also:

AxisFactory.AxisMetrics.getPlotSize(int)

setCoreSize

public void setCoreSize(float[] coreSize)

Sets metrics core size.

Bar chart metrics speciality is, that setting core size affects plot offset, too, as first and last bar hang half out.

Overrides:

setCoreSize in class AxisFactory.AxisMetrics

getGroupSize

public float getGroupSize()

Gets bar group size for this metrics. The bar group size is a function of current category axis core size, and the number of steps along that axis.

If there are two or more bars, group size equals the width of the core area divided by the number of steps between bars. If there is just one bar, core area has zero size, and group size equals the sum of plot offset sizes.

Returns:

bar group size in device coordinates

See Also:

BarFactory.getCategoryAxis(), ChartAxis.getSteps()