Java Line2D.setLine方法代碼示例

import java.awt.geom.Line2D; //導入方法依賴的package包/類
/** Check the bounds of given line with the bounds of this pane. Optionally
 * calculate the new bounds in current pane's boundary.
 * @param line a line for check
 * @return  a line with bounds inside the pane's boundary */
private Line2D checkLineBounds(Line2D line) {
    Rectangle bounds = getBounds();
    double startPointX;
    double startPointY;
    double endPointX;
    double endPointY;

    // check start point
    startPointX = Math.max(line.getX1(), bounds.x + MIN_X);
    startPointY = Math.max(line.getY1(), bounds.y + MIN_Y);

    // check end point
    endPointX = Math.min(line.getX2(), (bounds.x + bounds.width) - MIN_WIDTH);
    endPointY = Math.min(line.getY2(), (bounds.y + bounds.height) - MIN_HEIGTH);

    // set new bounds
    line.setLine(startPointX, startPointY, endPointX, endPointY);

    return line;
}
 

import java.awt.geom.Line2D; //導入方法依賴的package包/類
/** Check the bounds of given line with the bounds of this pane. Optionally
 * calculate the new bounds in current pane's boundary.
 * @param line a line for check
 * @return  a line with bounds inside the pane's boundary */
private Line2D checkLineBounds(Line2D line) {
    Rectangle bounds = getBounds();
    double startPointX;
    double startPointY;
    double endPointX;
    double endPointY;
    
    // check start point
    startPointX = Math.max(line.getX1(), bounds.x + MIN_X);
    startPointY = Math.max(line.getY1(), bounds.y + MIN_Y);

    // check end point
    endPointX = Math.min(line.getX2(), (bounds.x + bounds.width));// - MIN_WIDTH);
    endPointY = Math.min(line.getY2(), (bounds.y + bounds.height) - MIN_HEIGTH);

    // set new bounds
    line.setLine(startPointX, startPointY, endPointX, endPointY);

    return line;
}
 

import java.awt.geom.Line2D; //導入方法依賴的package包/類
/**
 * Draws the sample.
 *
 * @param g  the graphics device.
 */
public void paintComponent(Graphics g) {

    Graphics2D g2 = (Graphics2D) g;
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
    Dimension size = getSize();
    Insets insets = getInsets();
    double ww = size.getWidth() - insets.left - insets.right;
    double hh = size.getHeight() - insets.top - insets.bottom;

    g2.setStroke(new BasicStroke(1.0f));

    double y1 = insets.top;
    double y2 = y1 + hh;
    double xx = insets.left;
    Line2D line = new Line2D.Double();
    int count = 0;
    while (xx <= insets.left + ww) {
        count++;
        line.setLine(xx, y1, xx, y2);
        g2.setPaint(this.palette.getColor(count));
        g2.draw(line);
        xx += 1;
    }
}
 

import java.awt.geom.Line2D; //導入方法依賴的package包/類
/**
 * Draws the needle.
 *
 * @param g2  the graphics device.
 * @param plotArea  the plot area.
 * @param rotate  the rotation point.
 * @param angle  the angle.
 */
protected void drawNeedle(Graphics2D g2, Rectangle2D plotArea, 
                          Point2D rotate, double angle) {

    Line2D shape = new Line2D.Double();

    double x = plotArea.getMinX() + (plotArea.getWidth() / 2);
    shape.setLine(x, plotArea.getMinY(), x, plotArea.getMaxY());

    Shape s = shape;

    if ((rotate != null) && (angle != 0)) {
        /// we have rotation
        getTransform().setToRotation(angle, rotate.getX(), rotate.getY());
        s = getTransform().createTransformedShape(s);
    }

    defaultDisplay(g2, s);

}
 

import java.awt.geom.Line2D; //導入方法依賴的package包/類
/** Converts line's bounds by the bounds of the root pane. Drop glass pane
 * is over this root pane. After covert a given line is set to drop glass pane.
 * @param line line for show in drop glass pane */
private void convertBoundsAndSetDropLine(final Line2D line) {
    int x1 = (int) line.getX1();
    int x2 = (int) line.getX2();
    int y1 = (int) line.getY1();
    int y2 = (int) line.getY2();
    Point p1 = SwingUtilities.convertPoint(tree, x1, y1, tree.getRootPane());
    Point p2 = SwingUtilities.convertPoint(tree, x2, y2, tree.getRootPane());
    line.setLine(p1, p2);
    if( null != dropPane )
        dropPane.setDropLine(line);
}
 

import java.awt.geom.Line2D; //導入方法依賴的package包/類
/** Converts line's bounds by the bounds of the root pane. Drop glass pane
 * is over this root pane. After covert a given line is set to drop glass pane.
 * @param line line for show in drop glass pane */
private void convertBoundsAndSetDropLine(final Line2D line) {
    int x1 = (int) line.getX1();
    int x2 = (int) line.getX2();
    int y1 = (int) line.getY1();
    int y2 = (int) line.getY2();
    Point p1 = SwingUtilities.convertPoint(table, x1, y1, table.getRootPane());
    Point p2 = SwingUtilities.convertPoint(table, x2, y2, table.getRootPane());
    line.setLine(p1, p2);
    dropPane.setDropLine(line);
}
 

import java.awt.geom.Line2D; //導入方法依賴的package包/類
/**
 * Draws the border by filling in the reserved space (in black).
 * 
 * @param g2  the graphics device.
 * @param area  the area.
 */
public void draw(Graphics2D g2, Rectangle2D area) {
    double w = area.getWidth();
    double h = area.getHeight();
    double t = this.insets.calculateTopInset(h);
    double b = this.insets.calculateBottomInset(h);
    double l = this.insets.calculateLeftInset(w);
    double r = this.insets.calculateRightInset(w);
    double x = area.getX();
    double y = area.getY();
    double x0 = x + l / 2.0;
    double x1 = x + w - r / 2.0;
    double y0 = y + h - b / 2.0;
    double y1 = y + t / 2.0;
    g2.setPaint(getPaint());
    g2.setStroke(getStroke());
    Line2D line = new Line2D.Double();
    if (t > 0.0) {
        line.setLine(x0, y1, x1, y1);
        g2.draw(line);
    }
    if (b > 0.0) {
        line.setLine(x0, y0, x1, y0);
        g2.draw(line);
    }
    if (l > 0.0) {
        line.setLine(x0, y0, x0, y1);
        g2.draw(line);
    }
    if (r > 0.0) {
        line.setLine(x1, y0, x1, y1);
        g2.draw(line);
    }        
}
 

import java.awt.geom.Line2D; //導入方法依賴的package包/類
/**
 * Draws the sample.
 *
 * @param g  the graphics device.
 */
public void paintComponent(Graphics g) {

    Graphics2D g2 = (Graphics2D) g;
    g2.setRenderingHint(
        RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF
    );
    Dimension size = getSize();
    Insets insets = getInsets();
    double ww = size.getWidth() - insets.left - insets.right;
    double hh = size.getHeight() - insets.top - insets.bottom;

    g2.setStroke(new BasicStroke(1.0f));

    double y1 = insets.top;
    double y2 = y1 + hh;
    double xx = insets.left;
    Line2D line = new Line2D.Double();
    int count = 0;
    while (xx <= insets.left + ww) {
        count++;
        line.setLine(xx, y1, xx, y2);
        g2.setPaint(this.palette.getColor(count));
        g2.draw(line);
        xx += 1;
    }
}
 

import java.awt.geom.Line2D; //導入方法依賴的package包/類
/**
 * Draws the background for the plot.
 *
 * @param g2  the graphics device.
 * @param plot  the plot.
 * @param dataArea  the area inside the axes.
 */
public void drawBackground(Graphics2D g2, CategoryPlot plot, Rectangle2D dataArea) {

    float x0 = (float) dataArea.getX();
    float x1 = x0 + (float) Math.abs(this.xOffset);
    float x3 = (float) dataArea.getMaxX();
    float x2 = x3 - (float) Math.abs(this.xOffset);

    float y0 = (float) dataArea.getMaxY();
    float y1 = y0 - (float) Math.abs(this.yOffset);
    float y3 = (float) dataArea.getMinY();
    float y2 = y3 + (float) Math.abs(this.yOffset);

    GeneralPath clip = new GeneralPath();
    clip.moveTo(x0, y0);
    clip.lineTo(x0, y2);
    clip.lineTo(x1, y3);
    clip.lineTo(x3, y3);
    clip.lineTo(x3, y1);
    clip.lineTo(x2, y0);
    clip.closePath();

    // fill background...
    Paint backgroundPaint = plot.getBackgroundPaint();
    if (backgroundPaint != null) {
        g2.setPaint(backgroundPaint);
        g2.fill(clip);
    }

    GeneralPath leftWall = new GeneralPath();
    leftWall.moveTo(x0, y0);
    leftWall.lineTo(x0, y2);
    leftWall.lineTo(x1, y3);
    leftWall.lineTo(x1, y1);
    leftWall.closePath();
    g2.setPaint(getWallPaint());
    g2.fill(leftWall);

    GeneralPath bottomWall = new GeneralPath();
    bottomWall.moveTo(x0, y0);
    bottomWall.lineTo(x1, y1);
    bottomWall.lineTo(x3, y1);
    bottomWall.lineTo(x2, y0);
    bottomWall.closePath();
    g2.setPaint(getWallPaint());
    g2.fill(bottomWall);

    // higlight the background corners...
    g2.setPaint(Color.lightGray);
    Line2D corner = new Line2D.Double(x0, y0, x1, y1);
    g2.draw(corner);
    corner.setLine(x1, y1, x1, y3);
    g2.draw(corner);
    corner.setLine(x1, y1, x3, y1);
    g2.draw(corner);

    // draw background image, if there is one...
    Image backgroundImage = plot.getBackgroundImage();
    if (backgroundImage != null) {
        Composite originalComposite = g2.getComposite();
        g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC,
                                                   plot.getBackgroundAlpha()));
        g2.drawImage(backgroundImage,
                     (int) x1, (int) y3,
                     (int) (x3 - x1 + 1), (int) (y1 - y3 + 1),
                     null);
        g2.setComposite(originalComposite);
    }

}
 

import java.awt.geom.Line2D; //導入方法依賴的package包/類
/**
 * Draws the needle.
 *
 * @param g2  the graphics device.
 * @param plotArea  the plot area.
 * @param rotate  the rotation point.
 * @param angle  the angle.
 */
protected void drawNeedle(Graphics2D g2, Rectangle2D plotArea, Point2D rotate, double angle) {

    Line2D shape = new Line2D.Float();
    Shape d = null;

    float x = (float) (plotArea.getMinX() +  (plotArea.getWidth() / 2));
    float minY = (float) plotArea.getMinY();
    float maxY = (float) plotArea.getMaxY();
    shape.setLine(x, minY, x, maxY);

    GeneralPath shape1 = new GeneralPath();
    if (this.isArrowAtTop) {
        shape1.moveTo(x, minY);
        minY += 4 * getSize();
    }
    else {
        shape1.moveTo(x, maxY);
        minY = maxY - 4 * getSize();
    }
    shape1.lineTo(x + getSize(), minY);
    shape1.lineTo(x - getSize(), minY);
    shape1.closePath();

    if ((rotate != null) && (angle != 0)) {
        getTransform().setToRotation(angle, rotate.getX(), rotate.getY());
        d = getTransform().createTransformedShape(shape);
    }
    else {
        d = shape;
    }
    defaultDisplay(g2, d);

    if ((rotate != null) && (angle != 0)) {
        d = getTransform().createTransformedShape(shape1);
    }
    else {
        d = shape1;
    }
    defaultDisplay(g2, d);

}
 

import java.awt.geom.Line2D; //導入方法依賴的package包/類
/**
 * Draws the needle.
 *
 * @param g2  the graphics device.
 * @param plotArea  the plot area.
 * @param rotate  the rotation point.
 * @param angle  the angle.
 */
protected void drawNeedle(Graphics2D g2, Rectangle2D plotArea, Point2D rotate, double angle) {

    Line2D shape = new Line2D.Double();

    double x = plotArea.getMinX() + (plotArea.getWidth() / 2);
    shape.setLine(x, plotArea.getMinY(), x, plotArea.getMaxY());

    Shape s = shape;

    if ((rotate != null) && (angle != 0)) {
        /// we have rotation
        getTransform().setToRotation(angle, rotate.getX(), rotate.getY());
        s = getTransform().createTransformedShape(s);
    }

    defaultDisplay(g2, s);

}
 

import java.awt.geom.Line2D; //導入方法依賴的package包/類
/**
 * Draws the pointer.
 * 
 * @param g2  the graphics target.
 * @param plot  the plot.
 * @param frame  the dial's reference frame.
 * @param view  the dial's view.
 */
public void draw(Graphics2D g2, DialPlot plot, Rectangle2D frame, 
        Rectangle2D view) {

    g2.setPaint(Color.blue);
    g2.setStroke(new BasicStroke(1.0f));
    Rectangle2D lengthRect = DialPlot.rectangleByRadius(frame, 
            this.radius, this.radius);
    Rectangle2D widthRect = DialPlot.rectangleByRadius(frame, 
            this.widthRadius, this.widthRadius);
    double value = plot.getValue(this.datasetIndex);
    DialScale scale = plot.getScaleForDataset(this.datasetIndex);
    double angle = scale.valueToAngle(value);

    Arc2D arc1 = new Arc2D.Double(lengthRect, angle, 0, Arc2D.OPEN);
    Point2D pt1 = arc1.getEndPoint();
    Arc2D arc2 = new Arc2D.Double(widthRect, angle - 90.0, 180.0, 
            Arc2D.OPEN);
    Point2D pt2 = arc2.getStartPoint();
    Point2D pt3 = arc2.getEndPoint();
    Arc2D arc3 = new Arc2D.Double(widthRect, angle - 180.0, 0.0, 
            Arc2D.OPEN);
    Point2D pt4 = arc3.getStartPoint();

    GeneralPath gp = new GeneralPath();
    gp.moveTo((float) pt1.getX(), (float) pt1.getY());
    gp.lineTo((float) pt2.getX(), (float) pt2.getY());
    gp.lineTo((float) pt4.getX(), (float) pt4.getY());
    gp.lineTo((float) pt3.getX(), (float) pt3.getY());
    gp.closePath();
    g2.setPaint(Color.gray);
    g2.fill(gp);

    g2.setPaint(Color.black);
    Line2D line = new Line2D.Double(frame.getCenterX(), 
            frame.getCenterY(), pt1.getX(), pt1.getY());
    g2.draw(line);

    line.setLine(pt2, pt3);
    g2.draw(line);

    line.setLine(pt3, pt1);
    g2.draw(line);

    line.setLine(pt2, pt1);
    g2.draw(line);

    line.setLine(pt2, pt4);
    g2.draw(line);

    line.setLine(pt3, pt4);
    g2.draw(line);
}
 

import java.awt.geom.Line2D; //導入方法依賴的package包/類
/**
 * Draws the background for the plot.
 *
 * @param g2  the graphics device.
 * @param plot  the plot.
 * @param dataArea  the area inside the axes.
 */
public void drawBackground(Graphics2D g2, CategoryPlot plot, 
                           Rectangle2D dataArea) {

    float x0 = (float) dataArea.getX();
    float x1 = x0 + (float) Math.abs(this.xOffset);
    float x3 = (float) dataArea.getMaxX();
    float x2 = x3 - (float) Math.abs(this.xOffset);

    float y0 = (float) dataArea.getMaxY();
    float y1 = y0 - (float) Math.abs(this.yOffset);
    float y3 = (float) dataArea.getMinY();
    float y2 = y3 + (float) Math.abs(this.yOffset);

    GeneralPath clip = new GeneralPath();
    clip.moveTo(x0, y0);
    clip.lineTo(x0, y2);
    clip.lineTo(x1, y3);
    clip.lineTo(x3, y3);
    clip.lineTo(x3, y1);
    clip.lineTo(x2, y0);
    clip.closePath();

    // fill background...
    Paint backgroundPaint = plot.getBackgroundPaint();
    if (backgroundPaint != null) {
        g2.setPaint(backgroundPaint);
        g2.fill(clip);
    }

    GeneralPath leftWall = new GeneralPath();
    leftWall.moveTo(x0, y0);
    leftWall.lineTo(x0, y2);
    leftWall.lineTo(x1, y3);
    leftWall.lineTo(x1, y1);
    leftWall.closePath();
    g2.setPaint(getWallPaint());
    g2.fill(leftWall);

    GeneralPath bottomWall = new GeneralPath();
    bottomWall.moveTo(x0, y0);
    bottomWall.lineTo(x1, y1);
    bottomWall.lineTo(x3, y1);
    bottomWall.lineTo(x2, y0);
    bottomWall.closePath();
    g2.setPaint(getWallPaint());
    g2.fill(bottomWall);

    // higlight the background corners...
    g2.setPaint(Color.lightGray);
    Line2D corner = new Line2D.Double(x0, y0, x1, y1);
    g2.draw(corner);
    corner.setLine(x1, y1, x1, y3);
    g2.draw(corner);
    corner.setLine(x1, y1, x3, y1);
    g2.draw(corner);

    // draw background image, if there is one...
    Image backgroundImage = plot.getBackgroundImage();
    if (backgroundImage != null) {
        Composite originalComposite = g2.getComposite();
        g2.setComposite(AlphaComposite.getInstance(
                AlphaComposite.SRC, plot.getBackgroundAlpha()));
        g2.drawImage(backgroundImage, (int) x1, (int) y3, 
                (int) (x3 - x1 + 1), (int) (y1 - y3 + 1), null);
        g2.setComposite(originalComposite);
    }

}
 

import java.awt.geom.Line2D; //導入方法依賴的package包/類
/**
 * Draws the background for the plot.
 *
 * @param g2  the graphics device.
 * @param plot  the plot.
 * @param dataArea  the area inside the axes.
 */
public void drawBackground(Graphics2D g2, CategoryPlot plot, 
                           Rectangle2D dataArea) {

    float x0 = (float) dataArea.getX();
    float x1 = x0 + (float) Math.abs(this.xOffset);
    float x3 = (float) dataArea.getMaxX();
    float x2 = x3 - (float) Math.abs(this.xOffset);

    float y0 = (float) dataArea.getMaxY();
    float y1 = y0 - (float) Math.abs(this.yOffset);
    float y3 = (float) dataArea.getMinY();
    float y2 = y3 + (float) Math.abs(this.yOffset);

    GeneralPath clip = new GeneralPath();
    clip.moveTo(x0, y0);
    clip.lineTo(x0, y2);
    clip.lineTo(x1, y3);
    clip.lineTo(x3, y3);
    clip.lineTo(x3, y1);
    clip.lineTo(x2, y0);
    clip.closePath();

    // fill background...
    Paint backgroundPaint = plot.getBackgroundPaint();
    if (backgroundPaint != null) {
        g2.setPaint(backgroundPaint);
        g2.fill(clip);
    }

    GeneralPath leftWall = new GeneralPath();
    leftWall.moveTo(x0, y0);
    leftWall.lineTo(x0, y2);
    leftWall.lineTo(x1, y3);
    leftWall.lineTo(x1, y1);
    leftWall.closePath();
    g2.setPaint(getWallPaint());
    g2.fill(leftWall);

    GeneralPath bottomWall = new GeneralPath();
    bottomWall.moveTo(x0, y0);
    bottomWall.lineTo(x1, y1);
    bottomWall.lineTo(x3, y1);
    bottomWall.lineTo(x2, y0);
    bottomWall.closePath();
    g2.setPaint(getWallPaint());
    g2.fill(bottomWall);

    // higlight the background corners...
    g2.setPaint(Color.lightGray);
    Line2D corner = new Line2D.Double(x0, y0, x1, y1);
    g2.draw(corner);
    corner.setLine(x1, y1, x1, y3);
    g2.draw(corner);
    corner.setLine(x1, y1, x3, y1);
    g2.draw(corner);

    // draw background image, if there is one...
    Image backgroundImage = plot.getBackgroundImage();
    if (backgroundImage != null) {
        Composite originalComposite = g2.getComposite();
        g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC, 
                plot.getBackgroundAlpha()));
        g2.drawImage(backgroundImage, (int) x1, (int) y3, 
                (int) (x3 - x1 + 1), (int) (y1 - y3 + 1), null);
        g2.setComposite(originalComposite);
    }

}
 

import java.awt.geom.Line2D; //導入方法依賴的package包/類
/**
 * Draws the needle.
 *
 * @param g2  the graphics device.
 * @param plotArea  the plot area.
 * @param rotate  the rotation point.
 * @param angle  the angle.
 */
protected void drawNeedle(Graphics2D g2, Rectangle2D plotArea, 
                          Point2D rotate, double angle) {

    Line2D shape = new Line2D.Float();
    Shape d = null;

    float x = (float) (plotArea.getMinX() +  (plotArea.getWidth() / 2));
    float minY = (float) plotArea.getMinY();
    float maxY = (float) plotArea.getMaxY();
    shape.setLine(x, minY, x, maxY);

    GeneralPath shape1 = new GeneralPath();
    if (this.isArrowAtTop) {
        shape1.moveTo(x, minY);
        minY += 4 * getSize();
    }
    else {
        shape1.moveTo(x, maxY);
        minY = maxY - 4 * getSize();
    }
    shape1.lineTo(x + getSize(), minY);
    shape1.lineTo(x - getSize(), minY);
    shape1.closePath();

    if ((rotate != null) && (angle != 0)) {
        getTransform().setToRotation(angle, rotate.getX(), rotate.getY());
        d = getTransform().createTransformedShape(shape);
    }
    else {
        d = shape;
    }
    defaultDisplay(g2, d);

    if ((rotate != null) && (angle != 0)) {
        d = getTransform().createTransformedShape(shape1);
    }
    else {
        d = shape1;
    }
    defaultDisplay(g2, d);

}