Java Graphics2D.clip方法代码示例

import java.awt.Graphics2D; //导入方法依赖的package包/类
/**
     * Draws a message to state that there is no data to plot.
     *
     * @param g2  the graphics device.
     * @param area  the area within which the plot should be drawn.
     */
    protected void drawNoDataMessage(Graphics2D g2, Rectangle2D area) {

        Shape savedClip = g2.getClip();
        g2.clip(area);
        String message = this.noDataMessage;
        if (message != null) {
            g2.setFont(this.noDataMessageFont);
            g2.setPaint(this.noDataMessagePaint);
//            FontMetrics fm = g2.getFontMetrics(this.noDataMessageFont);
//            Rectangle2D bounds = TextUtilities.getTextBounds(message, g2, fm);
//            float x = (float) (area.getX() + area.getWidth() / 2 - bounds.getWidth() / 2);
//            float y = (float) (area.getMinY() + (area.getHeight() / 2) - (bounds.getHeight() / 2));
//            g2.drawString(message, x, y);
            TextBlock block = TextUtilities.createTextBlock(
                this.noDataMessage, this.noDataMessageFont, this.noDataMessagePaint, 
                0.9f * (float) area.getWidth(), new G2TextMeasurer(g2)
            );
            block.draw(
                g2, (float) area.getCenterX(), (float) area.getCenterY(), TextBlockAnchor.CENTER
            );
        }
        g2.setClip(savedClip);

    }
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
/**
 * Draws a message to state that there is no data to plot.
 *
 * @param g2  the graphics device.
 * @param area  the area within which the plot should be drawn.
 */
protected void drawNoDataMessage(Graphics2D g2, Rectangle2D area) {
    Shape savedClip = g2.getClip();
    g2.clip(area);
    String message = this.noDataMessage;
    if (message != null) {
        g2.setFont(this.noDataMessageFont);
        g2.setPaint(this.noDataMessagePaint);
        TextBlock block = TextUtilities.createTextBlock(
                this.noDataMessage, this.noDataMessageFont, 
                this.noDataMessagePaint, 0.9f * (float) area.getWidth(), 
                new G2TextMeasurer(g2));
        block.draw(g2, (float) area.getCenterX(), (float) area.getCenterY(), 
                TextBlockAnchor.CENTER);
    }
    g2.setClip(savedClip);
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
/**
 * Draws the grid bands.  Alternate bands are colored using 
 * <CODE>gridBandPaint<CODE> (<CODE>DEFAULT_GRID_BAND_PAINT</CODE> by 
 * default).
 *
 * @param g2  the graphics device.
 * @param plotArea  the area within which the chart should be drawn.
 * @param dataArea  the area within which the plot should be drawn (a 
 *                  subset of the drawArea).
 * @param edge  the axis location.
 * @param ticks  the ticks.
 */
protected void drawGridBands(Graphics2D g2,
                             Rectangle2D plotArea, 
                             Rectangle2D dataArea,
                             RectangleEdge edge, 
                             List ticks) {

    Shape savedClip = g2.getClip();
    g2.clip(dataArea);
    if (RectangleEdge.isTopOrBottom(edge)) {
        drawGridBandsHorizontal(g2, plotArea, dataArea, true, ticks);
    }
    else if (RectangleEdge.isLeftOrRight(edge)) {
        drawGridBandsVertical(g2, plotArea, dataArea, true, ticks);
    }
    g2.setClip(savedClip);

}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
private static void draw(final BufferedImage from,final Image to) {
    final Graphics2D g2d = (Graphics2D) to.getGraphics();
    g2d.setComposite(AlphaComposite.Src);
    g2d.setColor(Color.ORANGE);
    g2d.fillRect(0, 0, to.getWidth(null), to.getHeight(null));
    g2d.rotate(Math.toRadians(45));
    g2d.clip(new Rectangle(41, 42, 43, 44));
    g2d.drawImage(from, 50, 50, Color.blue, null);
    g2d.dispose();
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
/**
 * Draw one occupant object. First verify that the object is actually
 * visible before any drawing, set up the clip appropriately and use the
 * DisplayMap to determine which object to call upon to render this
 * particular Locatable. Note that we save and restore the graphics
 * transform to restore back to normalcy no matter what the renderer did to
 * to the coordinate system.
 *
 * @param g2    the Graphics2D object to use to render
 * @param xleft the leftmost pixel of the rectangle
 * @param ytop  the topmost pixel of the rectangle
 * @param obj   the Locatable object to draw
 */
private void drawOccupant(Graphics2D g2, int xleft, int ytop, Object obj) {
    Rectangle cellToDraw = new Rectangle(xleft, ytop, cellSize, cellSize);

    // Only draw if the object is visible within the current clipping
    // region.
    if (cellToDraw.intersects(g2.getClip().getBounds())) {
        Graphics2D g2copy = (Graphics2D) g2.create();
        g2copy.clip(cellToDraw);
        // Get the drawing object to display this occupant.
        Display displayObj = displayMap.findDisplayFor(obj.getClass());
        displayObj.draw(obj, this, g2copy, cellToDraw);
        g2copy.dispose();
    }
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
public static boolean getHighRes(double[] wesn, int width, int height, BufferedImage image) {
	getImage(wesn, width, height, image);
	Graphics2D g = image.createGraphics();
	Rectangle rect = new Rectangle(0, 0, width, height);
	double scale = (wesn[1] - wesn[0]) / (double)width;
	double r = 1/scale;
	if(r < (double)res[0]) return false;
	int ires = 0;
	while( r < (double)highRes[ires] && ires<highRes.length-1) ires++;
	if(ires == highRes.length-1) ires--;
	double gridScale = 600 / (double) highRes[ires];
	
	int x1 = (int) Math.floor( wesn[0] / gridScale);
	int x2 = (int) Math.ceil( wesn[1] / gridScale);
	int xmax = (int) Math.ceil( 360 / gridScale);

	int y1 = (int) Math.ceil( wesn[3] / gridScale);
	int y2 = (int) Math.floor( wesn[2] / gridScale);
	Rectangle clipRect = new Rectangle(8, 8, 600, 600);

	int xgrid, ygrid;
	String name;
	File file;
	double x0, y0;
	double west;
	double north;
	double offset;
	double pad = 8 / (double) highRes[ires];
	BufferedImage im = null;
	g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
		RenderingHints.VALUE_INTERPOLATION_BILINEAR);
	AffineTransform at = new AffineTransform();
	boolean returnVal = false;
	for( int x=x1 ; x<x2 ; x++ ) {
		xgrid = x;
		offset = -pad;
		while(xgrid < 0) {
			xgrid += xmax;
			offset -= 360;
		}
		while(xgrid >= xmax) {
			xgrid -= xmax;
			offset += 360;
		}
		west = (double) xgrid * gridScale + offset;
		x0 = (west - wesn[0]) / scale;
		for( int y=y1 ; y>y2 ; y--) {
			
			north = (double)y *gridScale + pad;
			if( y>0 ) {
				name = "g" + highRes[ires] + "_" + xgrid + "_N" + y +".jpg";
			} else {
				ygrid = -y;
				name = "g" + highRes[ires] + "_" + xgrid + "_S" + ygrid +".jpg";
			}
			String url = "file:/usr/local/seabeam/kn166-14/copy/science/tiles/g"+highRes[ires]+"/" + name;
			im = null;
			try { 
				BufferedInputStream in = new BufferedInputStream(
					(URLFactory.url(url)).openStream());
				//JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(in);
				//im = decoder.decodeAsBufferedImage();
				im = ImageIO.read(in);
				in.close();
			} catch ( Exception ioe) {
				continue;
			}
			g.setTransform(at);
			g.setClip(rect);
			y0 = (wesn[3] - north) / scale ;
			g.translate(x0, y0);
			double scl = 1 / ((double) highRes[ires] * scale);
			g.scale(scl, scl);
			g.clip(clipRect);
			returnVal = true;
			g.drawRenderedImage(im, at);
		}
	}
	return returnVal;
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
static void paintNewline(Graphics2D g, Shape viewAlloc, Rectangle clipBounds,
        DocumentView docView, EditorView view, int viewStartOffset)
{
    Rectangle2D viewRectReadonly = ViewUtils.shape2Bounds(viewAlloc);
    PaintState paintState = PaintState.save(g);
    Shape origClip = g.getClip();
    try {
        JTextComponent textComponent = docView.getTextComponent();
        SplitOffsetHighlightsSequence highlights = docView.getPaintHighlights(view, 0);
        boolean showNonPrintingChars = docView.op.isNonPrintableCharactersVisible();
        float charWidth = docView.op.getDefaultCharWidth();
        boolean logFiner = ViewHierarchyImpl.PAINT_LOG.isLoggable(Level.FINER);
        if (logFiner) {
            ViewHierarchyImpl.PAINT_LOG.finer("      Newline-View-Id=" + view.getDumpId() + // NOI18N
                    ", startOffset=" + viewStartOffset + ", alloc=" + viewAlloc + '\n' // NOI18N
            );

        }
        while (highlights.moveNext()) {
            int hiStartOffset = highlights.getStartOffset();
            int hiStartSplitOffset = highlights.getStartSplitOffset();
            int hiEndOffset = Math.min(highlights.getEndOffset(), viewStartOffset + 1); // TBD
            int hiEndSplitOffset = highlights.getEndSplitOffset();
            AttributeSet attrs = highlights.getAttributes();
            if (hiStartOffset > viewStartOffset) { // HL above newline
                break;
            }

            double startX = viewRectReadonly.getX() + hiStartSplitOffset * charWidth;
            double endX = (hiEndOffset > viewStartOffset)
                    ? viewRectReadonly.getMaxX()
                    : Math.min(viewRectReadonly.getX() + hiEndSplitOffset * charWidth, viewRectReadonly.getMaxX());
            Rectangle2D.Double renderPartRect = new Rectangle2D.Double(startX, viewRectReadonly.getY(), endX - startX, viewRectReadonly.getHeight());
            fillBackground(g, renderPartRect, attrs, textComponent);
            boolean hitsClip = (clipBounds == null) || renderPartRect.intersects(clipBounds);
            if (hitsClip) {
                // First render background and background related highlights
                // Do not g.clip() before background is filled since otherwise there would be
                // painting artifacts for italic fonts (one-pixel slanting lines) at certain positions.
                // Clip to part's alloc since textLayout.draw() renders fully the whole text layout
                g.clip(renderPartRect);
                paintBackgroundHighlights(g, renderPartRect, attrs, docView);
                // Render foreground with proper color
                g.setColor(HighlightsViewUtils.validForeColor(attrs, textComponent));
                Object strikeThroughValue = (attrs != null)
                        ? attrs.getAttribute(StyleConstants.StrikeThrough)
                        : null;
                if (showNonPrintingChars && hiStartSplitOffset == 0) { // First part => render newline char visible representation
                    TextLayout textLayout = docView.op.getNewlineCharTextLayout();
                    if (textLayout != null) {
                        paintTextLayout(g, renderPartRect, textLayout, docView);
                    }
                }
                if (strikeThroughValue != null) {
                    paintStrikeThrough(g, viewRectReadonly, strikeThroughValue, attrs, docView);
                }
                g.setClip(origClip);
            }
            if (logFiner) {
                ViewHierarchyImpl.PAINT_LOG.finer("        Highlight <" + 
                        hiStartOffset + '_' + hiStartSplitOffset + "," + // NOI18N
                        hiEndOffset + '_' + hiEndSplitOffset + ">, Color=" + // NOI18N
                        ViewUtils.toString(g.getColor()) + '\n'); // NOI18N
            }
            if (clipBounds != null && (renderPartRect.getX() > clipBounds.getMaxX())) {
                break;
            }
        }
    } finally {
        g.setClip(origClip);
        paintState.restore();
    }
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
public void initContext(TestEnvironment env, Context ctx) {
    ctx.graphics = env.getGraphics();
    int w = env.getWidth();
    int h = env.getHeight();
    ctx.size = env.getIntValue(sizeList);
    ctx.outdim = getOutputSize(ctx.size, ctx.size);
    ctx.pixscale = 1.0;
    if (hasGraphics2D) {
        Graphics2D g2d = (Graphics2D) ctx.graphics;
        AlphaComposite ac = (AlphaComposite) env.getModifier(compRules);
        if (env.isEnabled(doExtraAlpha)) {
            ac = AlphaComposite.getInstance(ac.getRule(), 0.125f);
        }
        g2d.setComposite(ac);
        if (env.isEnabled(doXor)) {
            g2d.setXORMode(Color.white);
        }
        if (env.isEnabled(doClipping)) {
            Polygon p = new Polygon();
            p.addPoint(0, 0);
            p.addPoint(w, 0);
            p.addPoint(0, h);
            p.addPoint(w, h);
            p.addPoint(0, 0);
            g2d.clip(p);
        }
        Transform tx = (Transform) env.getModifier(transforms);
        Dimension envdim = new Dimension(w, h);
        tx.init(g2d, ctx, envdim);
        w = envdim.width;
        h = envdim.height;
        g2d.setRenderingHint(RenderingHints.KEY_RENDERING,
                             env.getModifier(renderHint));
    }
    switch (env.getIntValue(animList)) {
    case 0:
        ctx.animate = false;
        ctx.maxX = 3;
        ctx.maxY = 1;
        ctx.orgX = (w - ctx.outdim.width) / 2;
        ctx.orgY = (h - ctx.outdim.height) / 2;
        break;
    case 1:
        ctx.animate = true;
        ctx.maxX = Math.max(Math.min(32, w - ctx.outdim.width), 3);
        ctx.maxY = 1;
        ctx.orgX = (w - ctx.outdim.width - ctx.maxX) / 2;
        ctx.orgY = (h - ctx.outdim.height) / 2;
        break;
    case 2:
        ctx.animate = true;
        ctx.maxX = (w - ctx.outdim.width) + 1;
        ctx.maxY = (h - ctx.outdim.height) + 1;
        ctx.maxX = adjustWidth(ctx.maxX, ctx.maxY);
        ctx.maxX = Math.max(ctx.maxX, 3);
        ctx.maxY = Math.max(ctx.maxY, 1);
        // ctx.orgX = ctx.orgY = 0;
        break;
    }
    ctx.initX = ctx.maxX / 2;
    ctx.initY = ctx.maxY / 2;
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
/**
 * Draws the plot on a Java 2D graphics device (such as the screen or a printer).
 * <P>
 * This plot relies on an {@link org.jfree.chart.renderer.DefaultPolarItemRenderer} to draw 
 * each item in the plot.  This allows the visual representation of the data to be changed 
 * easily.
 * <P>
 * The optional info argument collects information about the rendering of
 * the plot (dimensions, tooltip information etc).  Just pass in <code>null</code> if
 * you do not need this information.
 *
 * @param g2  the graphics device.
 * @param plotArea  the area within which the plot (including axes and labels) should be drawn.
 * @param parentState  ignored.
 * @param info  collects chart drawing information (<code>null</code> permitted).
 */
public void draw(Graphics2D g2, 
                 Rectangle2D plotArea, 
                 PlotState parentState,
                 PlotRenderingInfo info) {
   
    // if the plot area is too small, just return...
    boolean b1 = (plotArea.getWidth() <= MINIMUM_WIDTH_TO_DRAW);
    boolean b2 = (plotArea.getHeight() <= MINIMUM_HEIGHT_TO_DRAW);
    if (b1 || b2) {
        return;
    }
   
    // record the plot area...
    if (info != null) {
        info.setPlotArea(plotArea);
    }
   
    // adjust the drawing area for the plot insets (if any)...
    Insets insets = getInsets();
    if (insets != null) {
        plotArea.setRect(plotArea.getX() + insets.left,
                         plotArea.getY() + insets.top,
                         plotArea.getWidth() - insets.left - insets.right,
                         plotArea.getHeight() - insets.top - insets.bottom);
    }
  
    Rectangle2D dataArea = plotArea;
    if (info != null) {
        info.setDataArea(dataArea);
    }
   
    // draw the plot background and axes...
    drawBackground(g2, dataArea);
    double h = Math.min(dataArea.getWidth() / 2.0, dataArea.getHeight() / 2.0) - MARGIN;
    Rectangle2D quadrant = new Rectangle2D.Double(
        dataArea.getCenterX(), dataArea.getCenterY(), h, h
    );
    AxisState state = drawAxis(g2, plotArea, quadrant);
    if (this.renderer != null) {
        Shape originalClip = g2.getClip();
        Composite originalComposite = g2.getComposite();
      
        g2.clip(dataArea);
        g2.setComposite(
            AlphaComposite.getInstance(AlphaComposite.SRC_OVER, getForegroundAlpha())
        );
      
        drawGridlines(g2, dataArea, this.angleTicks, state.getTicks());
      
        // draw...
        render(g2, dataArea, info);
      
        g2.setClip(originalClip);
        g2.setComposite(originalComposite);
    }
    drawOutline(g2, dataArea);
    drawCornerTextItems(g2, dataArea);
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
/**
 * Saves current image.
 */
public void saveBaseMap() throws IOException {
	JFileChooser chooser = new JFileChooser(System.getProperty("user.dir"));
	int ok = chooser.showSaveDialog(null);
	if(ok==chooser.CANCEL_OPTION) return;

	Insets ins = new Insets(0,0,0,0);
	Rectangle r = getVisibleRect();
	int w = width;
	int h = height;
	Font font = null;
	if(mapBorder != null) {
		ins = mapBorder.getBorderInsets(this);
		float scale = (float)width / (float)r.width;
		font = mapBorder.getFont();
		Font font1 = font.deriveFont(scale*(float)font.getSize());
		mapBorder.setFont(font1);
		ins = mapBorder.getBorderInsets(this);
		w += ins.left+ins.right;
		h += ins.bottom+ins.top;
	}
	BufferedImage im = new BufferedImage(w, h,
				BufferedImage.TYPE_INT_RGB);
	Graphics2D g2 = im.createGraphics();
	if(mapBorder != null) {
		// GMA 1.4.8: TESTING - Has no affect on borders
		mapBorder.paintBorder(this, g2, 0, 0, w, h);
		
		g2.clip( mapBorder.getInteriorRectangle(this, 
					0, 0, w, h) );
		g2.translate(ins.left, ins.top);
		mapBorder.setFont(font);
	}
	for( int i=0 ; i<overlays.size() ; i++) {
		if( overlays.get(i) instanceof MapOverlay ) {
			((MapOverlay)overlays.get(i)).draw(g2);
			break;
		}
	}
	BufferedOutputStream out = new BufferedOutputStream(
				new FileOutputStream( chooser.getSelectedFile()));
	//JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
	//encoder.encode(im);
	ImageIO.write(im, "JPEG", out);

	out.flush();
	out.close();
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
/**
 * Draws a representation of the data within the dataArea region, using the
 * current renderer.
 * <P>
 * The <code>info</code> and <code>crosshairState</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 crosshairState  an optional object for collecting crosshair info.
 */
public void render(Graphics2D g2, Rectangle2D dataArea,
                   PlotRenderingInfo info, CrosshairState crosshairState) {

    // now get the data and plot it (the visual representation will depend
    // on the renderer that has been set)...
    ContourDataset data = this.getContourDataset();
    if (data != null) {

        ColorBar zAxis = getColorBar();

        if (this.clipPath != null) {
            GeneralPath clipper = getClipPath().draw(
                g2, dataArea, this.domainAxis, this.rangeAxis
            );
            if (this.clipPath.isClip()) {
                g2.clip(clipper);
            }
        }

        if (this.renderAsPoints) {
            pointRenderer(g2, dataArea, info, this,
                    this.domainAxis, this.rangeAxis, zAxis,
                          data, crosshairState);
        }
        else {
            contourRenderer(g2, dataArea, info, this,
                    this.domainAxis, this.rangeAxis, zAxis,
                            data, crosshairState);
        }

        // draw vertical crosshair if required...
        setDomainCrosshairValue(crosshairState.getCrosshairX(), false);
        if (isDomainCrosshairVisible()) {
            drawVerticalLine(g2, dataArea,
                             getDomainCrosshairValue(),
                             getDomainCrosshairStroke(),
                             getDomainCrosshairPaint());
        }

        // draw horizontal crosshair if required...
        setRangeCrosshairValue(crosshairState.getCrosshairY(), false);
        if (isRangeCrosshairVisible()) {
            drawHorizontalLine(g2, dataArea,
                               getRangeCrosshairValue(),
                               getRangeCrosshairStroke(),
                               getRangeCrosshairPaint());
        }

    }
    else if (this.clipPath != null) {
        getClipPath().draw(g2, dataArea, this.domainAxis, this.rangeAxis);
    }

}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
/**
 * Draws the plot on a Java 2D graphics device (such as the screen or a printer).
 *
 * @param g2  the graphics device.
 * @param plotArea  the area within which the plot should be drawn.
 * @param parentState  the state from the parent plot, if there is one.
 * @param info  collects info about the drawing (<code>null</code> permitted).
 */
public void draw(Graphics2D g2, Rectangle2D plotArea, PlotState parentState,
                 PlotRenderingInfo info) {

    if (LOGGER.isDebugEnabled()) {
        LOGGER.debug("Entering draw() method, plot area = " + plotArea.toString());   
    }

    // adjust for insets...
    Insets insets = getInsets();
    if (insets != null) {
        plotArea.setRect(plotArea.getX() + insets.left,
            plotArea.getY() + insets.top,
            plotArea.getWidth() - insets.left - insets.right,
            plotArea.getHeight() - insets.top - insets.bottom
        );
    }

    if (info != null) {
        info.setPlotArea(plotArea);
        info.setDataArea(plotArea);
    }

    drawBackground(g2, plotArea);
    drawOutline(g2, plotArea);

    Shape savedClip = g2.getClip();
    g2.clip(plotArea);

    Composite originalComposite = g2.getComposite();
    g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, getForegroundAlpha()));

    if (!DatasetUtilities.isEmptyOrNull(this.dataset)) {
        drawPie(g2, plotArea, info);
    }
    else {
        drawNoDataMessage(g2, plotArea);
    }

    g2.setClip(savedClip);
    g2.setComposite(originalComposite);

    drawOutline(g2, plotArea);

}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
public void paintBorder(Component c, Graphics g,
                                    int x, int y, int width, int height) {
    if (!(g instanceof Graphics2D)) {
        return;
    }

    Graphics2D g2 = (Graphics2D) g.create();

    int[] widths = getWidths();

    // Position and size of the border interior.
    int intX = x + widths[LEFT];
    int intY = y + widths[TOP];
    int intWidth = width - (widths[RIGHT] + widths[LEFT]);
    int intHeight = height - (widths[TOP] + widths[BOTTOM]);

    // Coordinates of the interior corners, from NW clockwise.
    int[][] intCorners = {
        { intX, intY },
        { intX + intWidth, intY },
        { intX + intWidth, intY + intHeight },
        { intX, intY + intHeight, },
    };

    // Draw the borders for all sides.
    for (int i = 0; i < 4; i++) {
        Value style = getBorderStyle(i);
        Polygon shape = getBorderShape(i);
        if ((style != Value.NONE) && (shape != null)) {
            int sideLength = (i % 2 == 0 ? intWidth : intHeight);

            // "stretch" the border shape by the interior area dimension
            shape.xpoints[2] += sideLength;
            shape.xpoints[3] += sideLength;
            Color color = getBorderColor(i);
            BorderPainter painter = getBorderPainter(i);

            double angle = i * Math.PI / 2;
            g2.setClip(g.getClip()); // Restore initial clip
            g2.translate(intCorners[i][0], intCorners[i][1]);
            g2.rotate(angle);
            g2.clip(shape);
            painter.paint(shape, g2, color, i);
            g2.rotate(-angle);
            g2.translate(-intCorners[i][0], -intCorners[i][1]);
        }
    }
    g2.dispose();
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
/**
 * Draws the plot on a Java 2D graphics device (such as the screen or a 
 * printer).
 * <P>
 * This plot relies on a {@link PolarItemRenderer} to draw each 
 * item in the plot.  This allows the visual representation of the data to 
 * be changed easily.
 * <P>
 * The optional info argument collects information about the rendering of
 * the plot (dimensions, tooltip information etc).  Just pass in 
 * <code>null</code> if you do not need this information.
 *
 * @param g2  the graphics device.
 * @param area  the area within which the plot (including axes and 
 *              labels) should be drawn.
 * @param anchor  the anchor point (<code>null</code> permitted).
 * @param parentState  ignored.
 * @param info  collects chart drawing information (<code>null</code> 
 *              permitted).
 */
public void draw(Graphics2D g2, 
                 Rectangle2D area, 
                 Point2D anchor,
                 PlotState parentState,
                 PlotRenderingInfo info) {
   
    // if the plot area is too small, just return...
    boolean b1 = (area.getWidth() <= MINIMUM_WIDTH_TO_DRAW);
    boolean b2 = (area.getHeight() <= MINIMUM_HEIGHT_TO_DRAW);
    if (b1 || b2) {
        return;
    }
   
    // record the plot area...
    if (info != null) {
        info.setPlotArea(area);
    }
   
    // adjust the drawing area for the plot insets (if any)...
    RectangleInsets insets = getInsets();
    insets.trim(area);
  
    Rectangle2D dataArea = area;
    if (info != null) {
        info.setDataArea(dataArea);
    }
   
    // draw the plot background and axes...
    drawBackground(g2, dataArea);
    double h = Math.min(dataArea.getWidth() / 2.0, 
            dataArea.getHeight() / 2.0) - MARGIN;
    Rectangle2D quadrant = new Rectangle2D.Double(dataArea.getCenterX(), 
            dataArea.getCenterY(), h, h);
    AxisState state = drawAxis(g2, area, quadrant);
    if (this.renderer != null) {
        Shape originalClip = g2.getClip();
        Composite originalComposite = g2.getComposite();
      
        g2.clip(dataArea);
        g2.setComposite(AlphaComposite.getInstance(
                AlphaComposite.SRC_OVER, getForegroundAlpha()));
      
        drawGridlines(g2, dataArea, this.angleTicks, state.getTicks());
      
        // draw...
        render(g2, dataArea, info);
      
        g2.setClip(originalClip);
        g2.setComposite(originalComposite);
    }
    drawOutline(g2, dataArea);
    drawCornerTextItems(g2, dataArea);
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
/**
 * Draws the fast scatter plot on a Java 2D graphics device (such as the 
 * screen or a printer).
 *
 * @param g2  the graphics device.
 * @param area   the area within which the plot (including axis labels)
 *                   should be drawn.
 * @param anchor  the anchor point (<code>null</code> permitted).
 * @param parentState  the state from the parent plot (ignored).
 * @param info  collects chart drawing information (<code>null</code> 
 *              permitted).
 */
public void draw(Graphics2D g2, Rectangle2D area, Point2D anchor,
                 PlotState parentState,
                 PlotRenderingInfo info) {

    // set up info collection...
    if (info != null) {
        info.setPlotArea(area);
    }

    // adjust the drawing area for plot insets (if any)...
    RectangleInsets insets = getInsets();
    insets.trim(area);

    AxisSpace space = new AxisSpace();
    space = this.domainAxis.reserveSpace(g2, this, area, 
            RectangleEdge.BOTTOM, space);
    space = this.rangeAxis.reserveSpace(g2, this, area, RectangleEdge.LEFT, 
            space);
    Rectangle2D dataArea = space.shrink(area, null);

    if (info != null) {
        info.setDataArea(dataArea);
    }

    // draw the plot background and axes...
    drawBackground(g2, dataArea);

    AxisState domainAxisState = this.domainAxis.draw(g2, 
            dataArea.getMaxY(), area, dataArea, RectangleEdge.BOTTOM, info);
    AxisState rangeAxisState = this.rangeAxis.draw(g2, dataArea.getMinX(), 
            area, dataArea, RectangleEdge.LEFT, info);
    drawDomainGridlines(g2, dataArea, domainAxisState.getTicks());
    drawRangeGridlines(g2, dataArea, rangeAxisState.getTicks());
    
    Shape originalClip = g2.getClip();
    Composite originalComposite = g2.getComposite();

    g2.clip(dataArea);
    g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 
            getForegroundAlpha()));

    render(g2, dataArea, info, null);

    g2.setClip(originalClip);
    g2.setComposite(originalComposite);
    drawOutline(g2, dataArea);

}