barrenderer3d.java

jfreechart安装程序和使用说明

     * @param plot  the plot.
     * @param dataArea  the area for plotting data (not yet adjusted for any 3D effect).
     * @param value  the Java2D value at which the grid line should be drawn.
     *
     */
    public void drawDomainGridline(Graphics2D g2,
                                   CategoryPlot plot,
                                   Rectangle2D dataArea,
                                   double value) {

        Line2D line1 = null;
        Line2D line2 = null;
        PlotOrientation orientation = plot.getOrientation();
        if (orientation == PlotOrientation.HORIZONTAL) {
            double y0 = value;
            double y1 = value - getYOffset();
            double x0 = dataArea.getMinX();
            double x1 = x0 + getXOffset();
            double x2 = dataArea.getMaxY();
            line1 = new Line2D.Double(x0, y0, x1, y1);
            line2 = new Line2D.Double(x1, y1, x2, y1);
        }
        else if (orientation == PlotOrientation.VERTICAL) {
            double x0 = value;
            double x1 = value + getXOffset();
            double y0 = dataArea.getMaxY();
            double y1 = y0 - getYOffset();
            double y2 = dataArea.getMinY();
            line1 = new Line2D.Double(x0, y0, x1, y1);
            line2 = new Line2D.Double(x1, y1, x1, y2);
        }
        Paint paint = plot.getDomainGridlinePaint();
        Stroke stroke = plot.getDomainGridlineStroke();
        g2.setPaint(paint != null ? paint : Plot.DEFAULT_OUTLINE_PAINT);
        g2.setStroke(stroke != null ? stroke : Plot.DEFAULT_OUTLINE_STROKE);
        g2.draw(line1);
        g2.draw(line2);

    }

    /**
     * Draws a grid line against the range axis.
     *
     * @param g2  the graphics device.
     * @param plot  the plot.
     * @param axis  the value axis.
     * @param dataArea  the area for plotting data (not yet adjusted for any 3D effect).
     * @param value  the value at which the grid line should be drawn.
     *
     */
    public void drawRangeGridline(Graphics2D g2,
                                  CategoryPlot plot,
                                  ValueAxis axis,
                                  Rectangle2D dataArea,
                                  double value) {

        Range range = axis.getRange();

        if (!range.contains(value)) {
            return;
        }

        Rectangle2D adjusted = new Rectangle2D.Double(dataArea.getX(),
                                                      dataArea.getY() + getYOffset(),
                                                      dataArea.getWidth() - getXOffset(),
                                                      dataArea.getHeight() - getYOffset());

        Line2D line1 = null;
        Line2D line2 = null;
        PlotOrientation orientation = plot.getOrientation();
        if (orientation == PlotOrientation.HORIZONTAL) {
            double x0 = axis.valueToJava2D(value, adjusted, plot.getRangeAxisEdge());
            double x1 = x0 + getXOffset();
            double y0 = dataArea.getMaxY();
            double y1 = y0 - getYOffset();
            double y2 = dataArea.getMinY();
            line1 = new Line2D.Double(x0, y0, x1, y1);
            line2 = new Line2D.Double(x1, y1, x1, y2);
        }
        else if (orientation == PlotOrientation.VERTICAL) {
            double y0 = axis.valueToJava2D(value, adjusted, plot.getRangeAxisEdge());
            double y1 = y0 - getYOffset();
            double x0 = dataArea.getMinX();
            double x1 = x0 + getXOffset();
            double x2 = dataArea.getMaxX();
            line1 = new Line2D.Double(x0, y0, x1, y1);
            line2 = new Line2D.Double(x1, y1, x2, y1);
        }
        Paint paint = plot.getRangeGridlinePaint();
        Stroke stroke = plot.getRangeGridlineStroke();
        g2.setPaint(paint != null ? paint : Plot.DEFAULT_OUTLINE_PAINT);
        g2.setStroke(stroke != null ? stroke : Plot.DEFAULT_OUTLINE_STROKE);
        g2.draw(line1);
        g2.draw(line2);

    }

    /**
     * Draws a range marker.
     *
     * @param g2  the graphics device.
     * @param plot  the plot.
     * @param axis  the value axis.
     * @param marker  the marker.
     * @param dataArea  the area for plotting data (not including 3D effect).
     */
    public void drawRangeMarker(Graphics2D g2,
                                CategoryPlot plot,
                                ValueAxis axis,
                                Marker marker,
                                Rectangle2D dataArea) {

        if (marker instanceof ValueMarker) {
            ValueMarker vm = (ValueMarker) marker;
            double value = vm.getValue();
            Range range = axis.getRange();
            if (!range.contains(value)) {
                return;
            }

            Rectangle2D adjusted = new Rectangle2D.Double(
                dataArea.getX(), dataArea.getY() + getYOffset(),
                dataArea.getWidth() - getXOffset(), dataArea.getHeight() - getYOffset()
            );

            GeneralPath path = null;
            PlotOrientation orientation = plot.getOrientation();
            if (orientation == PlotOrientation.HORIZONTAL) {
                float x = (float) axis.valueToJava2D(
                    value, adjusted, plot.getRangeAxisEdge()
                );
                float y = (float) adjusted.getMaxY();
                path = new GeneralPath();
                path.moveTo(x, y);
                path.lineTo((float) (x + getXOffset()), y - (float) getYOffset());
                path.lineTo(
                    (float) (x + getXOffset()), (float) (adjusted.getMinY() - getYOffset())
                );
                path.lineTo(x, (float) adjusted.getMinY());
                path.closePath();
            }
            else if (orientation == PlotOrientation.VERTICAL) {
                float y = (float) axis.valueToJava2D(
                    value, adjusted, plot.getRangeAxisEdge()
                );
                float x = (float) dataArea.getX();
                path = new GeneralPath();
                path.moveTo(x, y);
                path.lineTo(x + (float) this.xOffset, y - (float) this.yOffset);
                path.lineTo((float) (adjusted.getMaxX() + this.xOffset), y - (float) this.yOffset);
                path.lineTo((float) (adjusted.getMaxX()), y);
                path.closePath();
            }
            g2.setPaint(marker.getPaint());
            g2.fill(path);
            g2.setPaint(marker.getOutlinePaint());
            g2.draw(path);
        }
    }

    /**
     * Draws a 3D bar to represent one data item.
     *
     * @param g2  the graphics device.
     * @param state  the renderer state.
     * @param dataArea  the area for plotting the data.
     * @param plot  the plot.
     * @param domainAxis  the domain axis.
     * @param rangeAxis  the range axis.
     * @param dataset  the dataset.
     * @param row  the row index (zero-based).
     * @param column  the column index (zero-based).
     */
    public void drawItem(Graphics2D g2,
                         CategoryItemRendererState state,
                         Rectangle2D dataArea,
                         CategoryPlot plot,
                         CategoryAxis domainAxis,
                         ValueAxis rangeAxis,
                         CategoryDataset dataset,
                         int row,
                         int column) {
    
        // check the value we are plotting...
        Number dataValue = dataset.getValue(row, column);
        if (dataValue == null) {
            return;
        }
        
        double value = dataValue.doubleValue();
        
        Rectangle2D adjusted = new Rectangle2D.Double(dataArea.getX(),
                                                      dataArea.getY() + getYOffset(),
                                                      dataArea.getWidth() - getXOffset(),
                                                      dataArea.getHeight() - getYOffset());

        PlotOrientation orientation = plot.getOrientation();
        
        double barW0 = calculateBarW0(plot, orientation, adjusted, domainAxis, state, row, column);
        double[] barL0L1 = calculateBarL0L1(value);
        if (barL0L1 == null) {
            return;  // the bar is not visible
        }

        RectangleEdge edge = plot.getRangeAxisEdge();
        double transL0 = rangeAxis.valueToJava2D(barL0L1[0], adjusted, edge);
        double transL1 = rangeAxis.valueToJava2D(barL0L1[1], adjusted, edge);
        double barL0 = Math.min(transL0, transL1);
        double barLength = Math.abs(transL1 - transL0);
        
        // draw the bar...
        Rectangle2D bar = null;
        if (orientation == PlotOrientation.HORIZONTAL) {
            bar = new Rectangle2D.Double(barL0, barW0, barLength, state.getBarWidth());
        }
        else {
            bar = new Rectangle2D.Double(barW0, barL0, state.getBarWidth(), barLength);
        }
        Paint itemPaint = getItemPaint(row, column);
        g2.setPaint(itemPaint);
        g2.fill(bar);

        double x0 = bar.getMinX();
        double x1 = x0 + getXOffset();
        double x2 = bar.getMaxX();
        double x3 = x2 + getXOffset();
        
        double y0 = bar.getMinY() - getYOffset();
        double y1 = bar.getMinY();
        double y2 = bar.getMaxY() - getYOffset();
        double y3 = bar.getMaxY();
        
        GeneralPath bar3dRight = null;
        GeneralPath bar3dTop = null;
        if (barLength > 0.0) {
            bar3dRight = new GeneralPath();
            bar3dRight.moveTo((float) x2, (float) y3);
            bar3dRight.lineTo((float) x2, (float) y1);
            bar3dRight.lineTo((float) x3, (float) y0);
            bar3dRight.lineTo((float) x3, (float) y2);
            bar3dRight.closePath();

            if (itemPaint instanceof Color) {
                g2.setPaint(((Color) itemPaint).darker());
            }
            g2.fill(bar3dRight);
        }

        bar3dTop = new GeneralPath();
        bar3dTop.moveTo((float) x0, (float) y1);
        bar3dTop.lineTo((float) x1, (float) y0);
        bar3dTop.lineTo((float) x3, (float) y0);
        bar3dTop.lineTo((float) x2, (float) y1);
        bar3dTop.closePath();
        g2.fill(bar3dTop);

        if (isDrawBarOutline() && state.getBarWidth() > BAR_OUTLINE_WIDTH_THRESHOLD) {
            g2.setStroke(getItemOutlineStroke(row, column));
            g2.setPaint(getItemOutlinePaint(row, column));
            g2.draw(bar);
            if (bar3dRight != null) {
                g2.draw(bar3dRight);
            }
            if (bar3dTop != null) {
                g2.draw(bar3dTop);
            }
        }

        CategoryLabelGenerator generator = getLabelGenerator(row, column);
        if (generator != null && isItemLabelVisible(row, column)) {
            drawItemLabel(g2, dataset, row, column, plot, generator, bar, (transL0 < transL1));
        }        

        // collect entity and tool tip information...
        if (state.getInfo() != null) {
            EntityCollection entities = state.getInfo().getOwner().getEntityCollection();
            if (entities != null) {
                GeneralPath barOutline = new GeneralPath();
                barOutline.moveTo((float) x0, (float) y3);
                barOutline.lineTo((float) x0, (float) y1);
                barOutline.lineTo((float) x1, (float) y0);
                barOutline.lineTo((float) x3, (float) y0);
                barOutline.lineTo((float) x3, (float) y2);
                barOutline.lineTo((float) x2, (float) y3);
                barOutline.closePath();

                String tip = null;
                CategoryToolTipGenerator tipster = getToolTipGenerator(row, column);
                if (tipster != null) {
                    tip = tipster.generateToolTip(dataset, row, column);
                }
                String url = null;
                if (getItemURLGenerator(row, column) != null) {
                    url = getItemURLGenerator(row, column).generateURL(dataset, row, column);
                }
                CategoryItemEntity entity = new CategoryItemEntity(
                    barOutline, tip, url, dataset, row, dataset.getColumnKey(column), column
                );
                entities.addEntity(entity);
            }
        }

    }

    /**
     * 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.wallPaint, 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.wallPaint = SerialUtilities.readPaint(stream);
    }

}