nz.org.venice.chart
Class GraphTools

java.lang.Object
  nz.org.venice.chart.GraphTools

public class GraphTools

extends java.lang.Object

Constructor Summary

GraphTools()

Method Summary

static int	calcYCoord(int yoffset, double yValue, double topLineValue, double bottomLineValue, double verticalScale, int vertDirection) Utility method for calculating screen points given a data value, scale and direction.
static double	getPointFromScale(double point, double offset, double height, double scale)
static void	renderBar(java.awt.Graphics g, Graphable source, int xoffset, int yoffset, double horizontalScale, double verticalScale, double topLineValue, double bottomLineValue, java.util.List xRange)
static void	renderBar(java.awt.Graphics g, Graphable source, int xoffset, int yoffset, double horizontalScale, double verticalScale, double topLineValue, double bottomLineValue, java.util.List xRange, boolean vertOrientation)
static void	renderChar(java.awt.Graphics g, PFGraphable source, int xoffset, int yoffset, double horizontalScale, double verticalScale, double topLineValue, double bottomLineValue, java.util.List xRange)
static void	renderChar(java.awt.Graphics g, PFGraphable source, int xoffset, int yoffset, double horizontalScale, double verticalScale, double topLineValue, double bottomLineValue, java.util.List xRange, boolean vertOrientation)
static void	renderHorizontalLine(java.awt.Graphics g, double yValue, int xoffset, int yoffset, double horizontalScale, double verticalScale, double topLineValue, double bottomLineValue, java.util.List xRange, boolean vertOrientation)
static void	renderLine(java.awt.Graphics g, Graphable source, int xoffset, int yoffset, double horizontalScale, double verticalScale, double topLineValue, double bottomLineValue, java.util.List xRange)
static void	renderLine(java.awt.Graphics g, Graphable source, int xoffset, int yoffset, double horizontalScale, double verticalScale, double topLineValue, double bottomLineValue, java.util.List xRange, boolean vertOrientation)
static void	renderMarker(java.awt.Graphics g, PFGraphable source, int xoffset, int yoffset, double horizontalScale, double verticalScale, double topLineValue, double bottomLineValue, java.util.List xRange)
static void	renderMarker(java.awt.Graphics g, PFGraphable source, int xoffset, int yoffset, double horizontalScale, double verticalScale, double topLineValue, double bottomLineValue, java.util.List xRange, boolean vertOrientation)
static int	scaleAndFitPoint(double point, double offset, double scale)

Methods inherited from class java.lang.Object

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

Constructor Detail

GraphTools

public GraphTools()

Method Detail

renderHorizontalLine

public static void renderHorizontalLine(java.awt.Graphics g,
                                        double yValue,
                                        int xoffset,
                                        int yoffset,
                                        double horizontalScale,
                                        double verticalScale,
                                        double topLineValue,
                                        double bottomLineValue,
                                        java.util.List xRange,
                                        boolean vertOrientation)

renderLine

public static void renderLine(java.awt.Graphics g,
                              Graphable source,
                              int xoffset,
                              int yoffset,
                              double horizontalScale,
                              double verticalScale,
                              double topLineValue,
                              double bottomLineValue,
                              java.util.List xRange)

renderLine

public static void renderLine(java.awt.Graphics g,
                              Graphable source,
                              int xoffset,
                              int yoffset,
                              double horizontalScale,
                              double verticalScale,
                              double topLineValue,
                              double bottomLineValue,
                              java.util.List xRange,
                              boolean vertOrientation)

renderBar

public static void renderBar(java.awt.Graphics g,
                             Graphable source,
                             int xoffset,
                             int yoffset,
                             double horizontalScale,
                             double verticalScale,
                             double topLineValue,
                             double bottomLineValue,
                             java.util.List xRange)

renderBar

public static void renderBar(java.awt.Graphics g,
                             Graphable source,
                             int xoffset,
                             int yoffset,
                             double horizontalScale,
                             double verticalScale,
                             double topLineValue,
                             double bottomLineValue,
                             java.util.List xRange,
                             boolean vertOrientation)

scaleAndFitPoint

public static int scaleAndFitPoint(double point,
                                   double offset,
                                   double scale)

getPointFromScale

public static double getPointFromScale(double point,
                                       double offset,
                                       double height,
                                       double scale)

renderChar

public static void renderChar(java.awt.Graphics g,
                              PFGraphable source,
                              int xoffset,
                              int yoffset,
                              double horizontalScale,
                              double verticalScale,
                              double topLineValue,
                              double bottomLineValue,
                              java.util.List xRange)

renderChar

public static void renderChar(java.awt.Graphics g,
                              PFGraphable source,
                              int xoffset,
                              int yoffset,
                              double horizontalScale,
                              double verticalScale,
                              double topLineValue,
                              double bottomLineValue,
                              java.util.List xRange,
                              boolean vertOrientation)

renderMarker

public static void renderMarker(java.awt.Graphics g,
                                PFGraphable source,
                                int xoffset,
                                int yoffset,
                                double horizontalScale,
                                double verticalScale,
                                double topLineValue,
                                double bottomLineValue,
                                java.util.List xRange)

renderMarker

public static void renderMarker(java.awt.Graphics g,
                                PFGraphable source,
                                int xoffset,
                                int yoffset,
                                double horizontalScale,
                                double verticalScale,
                                double topLineValue,
                                double bottomLineValue,
                                java.util.List xRange,
                                boolean vertOrientation)

calcYCoord

public static int calcYCoord(int yoffset,
                             double yValue,
                             double topLineValue,
                             double bottomLineValue,
                             double verticalScale,
                             int vertDirection)

Utility method for calculating screen points given a data value, scale and direction.

Parameters:

yoffset - The yoffset in the graphics object where the graph starts

yValue - The data point (Y value)

topLineValue - The Y value of the highest line in the graph

bottomLineValue - The Y value of the lowest line in the graph

verticalScale - The verticalScale used to convert between Y value and cartesian coordinate y.

vertDirection - A flag indicating the vertical direction of the graph: 1 = Graph is drawn from top to bottom -1 = Graph is drawn from bottom to top