fastscatterplot.java

JFreeChartweb图表

        drawOutline(g2, dataArea);

    }

    /**
     * Draws a representation of the data within the dataArea region.
     * <P>
     * The <code>info</code> and <code>crosshairInfo</code> arguments may be <code>null</code>.
     *
     * @param g2  the graphics device.
     * @param dataArea  the region in which the data is to be drawn.
     * @param info  an optional object for collection dimension information.
     * @param crosshairInfo  an optional object for collecting crosshair info.
     */
    public void render(Graphics2D g2, Rectangle2D dataArea,
                       ChartRenderingInfo info, CrosshairInfo crosshairInfo) {

        g2.setPaint(Color.red);
        if (this.data != null) {
            for (int i = 0; i < data[0].length; i++) {
                float x = data[0][i];
                float y = data[1][i];
                int transX = (int) this.domainAxis.translateValueToJava2D(x, dataArea,
                                                                          RectangleEdge.BOTTOM);
                int transY = (int) this.rangeAxis.translateValueToJava2D(y, dataArea,
                                                                         RectangleEdge.LEFT);
                g2.fillRect(transX, transY, 1, 1);
            }
        }

    }

    /**
     * Returns the range of data values to be plotted along the axis.
     *
     * @param axis  the axis.
     *
     * @return  the range.
     */
    public Range getDataRange(ValueAxis axis) {

        Range result = null;
        if (axis == this.domainAxis) {
            result = this.xDataRange;
        }
        else if (axis == this.rangeAxis) {
            result = this.yDataRange;
        }
        return result;
    }

    /**
     * Calculates the X data range.
     *
     * @param data  the data.
     *
     * @return the range.
     */
    private Range calculateXDataRange(float[][] data) {
        
        Range result = null;
        
        if (data != null) {
            float lowest = Float.POSITIVE_INFINITY;
            float highest = Float.NEGATIVE_INFINITY;
            for (int i = 0; i < data[0].length; i++) {
                float v = data[0][i];
                if (v < lowest) {
                    lowest = v;
                }
                if (v > highest) {
                    highest = v;
                }
            }
            if (lowest <= highest) {
                result = new Range(lowest, highest);
            }
        }
        
        return result;
        
    }

    /**
     * Calculates the Y data range.
     *
     * @param data  the data.
     *
     * @return the range.
     */
    private Range calculateYDataRange(float[][] data) {
        
        Range result = null;
        
        if (data != null) {
            float lowest = Float.POSITIVE_INFINITY;
            float highest = Float.NEGATIVE_INFINITY;
            for (int i = 0; i < data[0].length; i++) {
                float v = data[1][i];
                if (v < lowest) {
                    lowest = v;
                }
                if (v > highest) {
                    highest = v;
                }
            }
            if (lowest <= highest) {
                result = new Range(lowest, highest);
            }
        }
        return result;
        
    }

    /**
     * Multiplies the range on the horizontal axis/axes by the specified factor (not yet 
     * implemented).
     *
     * @param factor  the zoom factor.
     */
    public void zoomHorizontalAxes(double factor) {
        // zoom the domain axis
    }

    /**
     * Zooms in on the horizontal axes (not yet implemented).
     * 
     * @param lowerPercent  the new lower bound as a percentage of the current range.
     * @param upperPercent  the new upper bound as a percentage of the current range.
     */
    public void zoomHorizontalAxes(double lowerPercent, double upperPercent) {
        // zoom the domain axis
    }

    /**
     * Multiplies the range on the vertical axis/axes by the specified factor (not yet implemented).
     *
     * @param factor  the zoom factor.
     */
    public void zoomVerticalAxes(double factor) {
            // zoom the range axis
            // zoom all the secondary axes
    }

    /**
     * Zooms in on the vertical axes (not yet implemented).
     * 
     * @param lowerPercent  the new lower bound as a percentage of the current range.
     * @param upperPercent  the new upper bound as a percentage of the current range.
     */
    public void zoomVerticalAxes(double lowerPercent, double upperPercent) {
        // zoom the domain axis
    }

    /**
     * Tests an object for equality with this instance.
     * 
     * @param object  the object to test.
     * 
     * @return A boolean.
     */
    public boolean equals(Object object) {
    
        if (object ==  null) {
            return false;    
        }
        
        if (object == this) {
            return true;
        }
        
        if (super.equals(object) && object instanceof FastScatterPlot) {
            FastScatterPlot fsp = (FastScatterPlot) object;
            boolean b0 = ArrayUtils.equal(this.data, fsp.data);
            boolean b1 = ObjectUtils.equal(this.domainAxis, fsp.domainAxis);
            boolean b2 = ObjectUtils.equal(this.rangeAxis, fsp.rangeAxis);
            boolean b3 = ObjectUtils.equal(this.paint, fsp.paint);
            
            return b0 && b1 && b2 && b3;

        }
        
        return false;
    }
    
    /**
     * Returns a clone of the plot.
     * 
     * @return A clone.
     * 
     * @throws CloneNotSupportedException if some component of the plot does not support cloning.
     */
    public Object clone() throws CloneNotSupportedException {
    
        FastScatterPlot clone = (FastScatterPlot) super.clone();    
        
        if (this.data != null) {
            clone.data = ArrayUtils.clone(this.data);    
        }
        
        if (this.domainAxis != null) {
            clone.domainAxis = (ValueAxis) this.domainAxis.clone();
        }
        
        if (this.rangeAxis != null) {
            clone.rangeAxis = (ValueAxis) this.rangeAxis.clone();
        }
            
        return clone;
        
    }

    /**
     * Provides serialization support.
     *
     * @param stream  the output stream.
     *
     * @throws IOException  if there is an I/O error.
     */
    private void writeObject(ObjectOutputStream stream) throws IOException {
        stream.defaultWriteObject();
        SerialUtilities.writePaint(this.paint, stream);
    }

    /**
     * Provides serialization support.
     *
     * @param stream  the input stream.
     *
     * @throws IOException  if there is an I/O error.
     * @throws ClassNotFoundException  if there is a classpath problem.
     */
    private void readObject(ObjectInputStream stream) throws IOException, ClassNotFoundException {
        stream.defaultReadObject();

        this.paint = SerialUtilities.readPaint(stream);

        if (this.domainAxis != null) {
            this.domainAxis.addChangeListener(this);
        }

        if (this.rangeAxis != null) {
            this.rangeAxis.addChangeListener(this);
        }
    }
    
}