Java Tutorial/2D Graphics/Shape
Содержание
- 1 Add Round Rectangle, Ellipse Arc to a shape
- 2 Combining Shapes
- 3 Creates a diagonal cross shape.
- 4 Creates a diamond shape.
- 5 Creates and returns a translated shape.
- 6 Creates a triangle shape that points downwards.
- 7 Creates a triangle shape that points upwards.
- 8 Creating a Shape Using Lines and Curves
- 9 Creating Basic Shapes
- 10 Draws a shape with the specified rotation about (x, y).
- 11 GlyphVector.getNumGlyphs()
- 12 Resize a shape
- 13 Rotating a Shape
- 14 Scaling a Shape
- 15 Shearing a Shape
- 16 Translating a Shape
Add Round Rectangle, Ellipse Arc to a shape
<source lang="java">
import java.awt.BasicStroke; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Point; import java.awt.RenderingHints; import java.awt.Shape; import java.awt.geom.Arc2D; import java.awt.geom.Ellipse2D; import java.awt.geom.Line2D; import java.awt.geom.Rectangle2D; import java.awt.geom.RoundRectangle2D; import java.util.ArrayList; import javax.swing.JComponent; import javax.swing.JFrame; public class ShapeMaker extends JFrame {
public static void main(String[] args) { new ShapeMaker(); } public ShapeMaker() { this.setSize(300, 300); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.add(new PaintSurface(), BorderLayout.CENTER); this.setVisible(true); } private class PaintSurface extends JComponent { ArrayList<Shape> shapes = new ArrayList<Shape>(); Point startDrag, endDrag; Shape found = null; public PaintSurface() { Shape s = new Rectangle2D.Float(10, 10, 60, 80); shapes.add(s); s = new RoundRectangle2D.Float(110, 10, 80, 80, 10, 10); shapes.add(s); s = new Ellipse2D.Float(10, 110, 80, 80); shapes.add(s);
s = new Arc2D.Float(10, 210, 80, 80, 90, 90, Arc2D.OPEN); shapes.add(s); s = new Arc2D.Float(110, 210, 80, 80, 0, 180, Arc2D.CHORD); shapes.add(s); s = new Arc2D.Float(210, 210, 80, 80, 45, 90, Arc2D.PIE); shapes.add(s); } public void paint(Graphics g) { Graphics2D g2 = (Graphics2D) g; g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); g2.setPaint(Color.LIGHT_GRAY); for (int i = 0; i < getSize().width; i += 10) g2.draw(new Line2D.Float(i, 0, i, getSize().height)); for (int i = 0; i < getSize().height; i += 10) g2.draw(new Line2D.Float(0, i, getSize().width, i)); g2.setColor(Color.BLACK); g2.setStroke(new BasicStroke(2)); for (Shape s : shapes) g2.draw(s); } }
}</source>
Combining Shapes
<source lang="java">
import java.awt.Rectangle; import java.awt.geom.Area; public class BasicShapes {
public static void main(String[] args) { Area shape = new Area(new Rectangle(1, 1, 1, 1)); shape.add(new Area(new Rectangle(1, 1, 1, 1))); shape.subtract(new Area(new Rectangle(1, 1, 1, 1))); shape.intersect(new Area(new Rectangle(1, 1, 1, 1))); shape.exclusiveOr(new Area(new Rectangle(1, 1, 1, 1))); }
}</source>
Creates a diagonal cross shape.
<source lang="java">
/*
* JCommon : a free general purpose class library for the Java(tm) platform * * * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors. * * Project Info: http://www.jfree.org/jcommon/index.html * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This library is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. * * [Java is a trademark or registered trademark of Sun Microsystems, Inc. * in the United States and other countries.] * * ------------------- * ShapeUtilities.java * ------------------- * (C)opyright 2003-2008, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: ShapeUtilities.java,v 1.18 2008/06/02 06:58:28 mungady Exp $ * * Changes * ------- * 13-Aug-2003 : Version 1 (DG); * 16-Mar-2004 : Moved rotateShape() from RefineryUtilities.java to here (DG); * 13-May-2004 : Added new shape creation methods (DG); * 30-Sep-2004 : Added createLineRegion() method (DG); * Moved drawRotatedShape() method from RefineryUtilities class * to this class (DG); * 04-Oct-2004 : Renamed ShapeUtils --> ShapeUtilities (DG); * 26-Oct-2004 : Added a method to test the equality of two Line2D * instances (DG); * 10-Nov-2004 : Added new translateShape() and equal(Ellipse2D, Ellipse2D) * methods (DG); * 11-Nov-2004 : Renamed translateShape() --> createTranslatedShape() (DG); * 07-Jan-2005 : Minor Javadoc fix (DG); * 11-Jan-2005 : Removed deprecated code in preparation for 1.0.0 release (DG); * 21-Jan-2005 : Modified return type of RectangleAnchor.coordinates() * method (DG); * 22-Feb-2005 : Added equality tests for Arc2D and GeneralPath (DG); * 16-Mar-2005 : Fixed bug where equal(Shape, Shape) fails for two Polygon * instances (DG); * 01-Jun-2008 : Fixed bug in equal(GeneralPath, GeneralPath) method (DG); * */
import java.awt.Shape; import java.awt.geom.GeneralPath; /**
* Utility methods for {@link Shape} objects. * * @author David Gilbert */
public class Main {
/** * Creates a diagonal cross shape. * * @param l the length of each "arm". * @param t the thickness. * * @return A diagonal cross shape. */ public static Shape createRegularCross(final float l, final float t) { final GeneralPath p0 = new GeneralPath(); p0.moveTo(-l, t); p0.lineTo(-t, t); p0.lineTo(-t, l); p0.lineTo(t, l); p0.lineTo(t, t); p0.lineTo(l, t); p0.lineTo(l, -t); p0.lineTo(t, -t); p0.lineTo(t, -l); p0.lineTo(-t, -l); p0.lineTo(-t, -t); p0.lineTo(-l, -t); p0.closePath(); return p0; }
}</source>
Creates a diamond shape.
<source lang="java">
/*
* JCommon : a free general purpose class library for the Java(tm) platform * * * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors. * * Project Info: http://www.jfree.org/jcommon/index.html * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This library is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. * * [Java is a trademark or registered trademark of Sun Microsystems, Inc. * in the United States and other countries.] * * ------------------- * ShapeUtilities.java * ------------------- * (C)opyright 2003-2008, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: ShapeUtilities.java,v 1.18 2008/06/02 06:58:28 mungady Exp $ * * Changes * ------- * 13-Aug-2003 : Version 1 (DG); * 16-Mar-2004 : Moved rotateShape() from RefineryUtilities.java to here (DG); * 13-May-2004 : Added new shape creation methods (DG); * 30-Sep-2004 : Added createLineRegion() method (DG); * Moved drawRotatedShape() method from RefineryUtilities class * to this class (DG); * 04-Oct-2004 : Renamed ShapeUtils --> ShapeUtilities (DG); * 26-Oct-2004 : Added a method to test the equality of two Line2D * instances (DG); * 10-Nov-2004 : Added new translateShape() and equal(Ellipse2D, Ellipse2D) * methods (DG); * 11-Nov-2004 : Renamed translateShape() --> createTranslatedShape() (DG); * 07-Jan-2005 : Minor Javadoc fix (DG); * 11-Jan-2005 : Removed deprecated code in preparation for 1.0.0 release (DG); * 21-Jan-2005 : Modified return type of RectangleAnchor.coordinates() * method (DG); * 22-Feb-2005 : Added equality tests for Arc2D and GeneralPath (DG); * 16-Mar-2005 : Fixed bug where equal(Shape, Shape) fails for two Polygon * instances (DG); * 01-Jun-2008 : Fixed bug in equal(GeneralPath, GeneralPath) method (DG); * */
import java.awt.Shape; import java.awt.geom.GeneralPath; /**
* Utility methods for {@link Shape} objects. * * @author David Gilbert */
public class Main {
/** * Creates a diamond shape. * * @param s the size factor (equal to half the height of the diamond). * * @return A diamond shape. */ public static Shape createDiamond(final float s) { final GeneralPath p0 = new GeneralPath(); p0.moveTo(0.0f, -s); p0.lineTo(s, 0.0f); p0.lineTo(0.0f, s); p0.lineTo(-s, 0.0f); p0.closePath(); return p0; }
}</source>
Creates and returns a translated shape.
<source lang="java">
/*
* JCommon : a free general purpose class library for the Java(tm) platform * * * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors. * * Project Info: http://www.jfree.org/jcommon/index.html * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This library is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. * * [Java is a trademark or registered trademark of Sun Microsystems, Inc. * in the United States and other countries.] * * ------------------- * ShapeUtilities.java * ------------------- * (C)opyright 2003-2008, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: ShapeUtilities.java,v 1.18 2008/06/02 06:58:28 mungady Exp $ * * Changes * ------- * 13-Aug-2003 : Version 1 (DG); * 16-Mar-2004 : Moved rotateShape() from RefineryUtilities.java to here (DG); * 13-May-2004 : Added new shape creation methods (DG); * 30-Sep-2004 : Added createLineRegion() method (DG); * Moved drawRotatedShape() method from RefineryUtilities class * to this class (DG); * 04-Oct-2004 : Renamed ShapeUtils --> ShapeUtilities (DG); * 26-Oct-2004 : Added a method to test the equality of two Line2D * instances (DG); * 10-Nov-2004 : Added new translateShape() and equal(Ellipse2D, Ellipse2D) * methods (DG); * 11-Nov-2004 : Renamed translateShape() --> createTranslatedShape() (DG); * 07-Jan-2005 : Minor Javadoc fix (DG); * 11-Jan-2005 : Removed deprecated code in preparation for 1.0.0 release (DG); * 21-Jan-2005 : Modified return type of RectangleAnchor.coordinates() * method (DG); * 22-Feb-2005 : Added equality tests for Arc2D and GeneralPath (DG); * 16-Mar-2005 : Fixed bug where equal(Shape, Shape) fails for two Polygon * instances (DG); * 01-Jun-2008 : Fixed bug in equal(GeneralPath, GeneralPath) method (DG); * */
import java.awt.Shape; import java.awt.geom.AffineTransform; /**
* Utility methods for {@link Shape} objects. * * @author David Gilbert */
public class Main {
/**
* Creates and returns a translated shape.
*
* @param shape the shape (null
not permitted).
* @param transX the x translation (in Java2D space).
* @param transY the y translation (in Java2D space).
*
* @return The translated shape.
*/
public static Shape createTranslatedShape(final Shape shape,
final double transX,
final double transY) {
if (shape == null) {
throw new IllegalArgumentException("Null "shape" argument.");
}
final AffineTransform transform = AffineTransform.getTranslateInstance(
transX, transY);
return transform.createTransformedShape(shape);
}
}</source>
Creates a triangle shape that points downwards.
<source lang="java">
/*
* JCommon : a free general purpose class library for the Java(tm) platform * * * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors. * * Project Info: http://www.jfree.org/jcommon/index.html * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This library is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. * * [Java is a trademark or registered trademark of Sun Microsystems, Inc. * in the United States and other countries.] * * ------------------- * ShapeUtilities.java * ------------------- * (C)opyright 2003-2008, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: ShapeUtilities.java,v 1.18 2008/06/02 06:58:28 mungady Exp $ * * Changes * ------- * 13-Aug-2003 : Version 1 (DG); * 16-Mar-2004 : Moved rotateShape() from RefineryUtilities.java to here (DG); * 13-May-2004 : Added new shape creation methods (DG); * 30-Sep-2004 : Added createLineRegion() method (DG); * Moved drawRotatedShape() method from RefineryUtilities class * to this class (DG); * 04-Oct-2004 : Renamed ShapeUtils --> ShapeUtilities (DG); * 26-Oct-2004 : Added a method to test the equality of two Line2D * instances (DG); * 10-Nov-2004 : Added new translateShape() and equal(Ellipse2D, Ellipse2D) * methods (DG); * 11-Nov-2004 : Renamed translateShape() --> createTranslatedShape() (DG); * 07-Jan-2005 : Minor Javadoc fix (DG); * 11-Jan-2005 : Removed deprecated code in preparation for 1.0.0 release (DG); * 21-Jan-2005 : Modified return type of RectangleAnchor.coordinates() * method (DG); * 22-Feb-2005 : Added equality tests for Arc2D and GeneralPath (DG); * 16-Mar-2005 : Fixed bug where equal(Shape, Shape) fails for two Polygon * instances (DG); * 01-Jun-2008 : Fixed bug in equal(GeneralPath, GeneralPath) method (DG); * */
import java.awt.Shape; import java.awt.geom.GeneralPath; /**
* Utility methods for {@link Shape} objects. * * @author David Gilbert */
public class Main {
/** * Creates a triangle shape that points downwards. * * @param s the size factor (equal to half the height of the triangle). * * @return A triangle shape. */ public static Shape createDownTriangle(final float s) { final GeneralPath p0 = new GeneralPath(); p0.moveTo(0.0f, s); p0.lineTo(s, -s); p0.lineTo(-s, -s); p0.closePath(); return p0; }
}</source>
Creates a triangle shape that points upwards.
<source lang="java">
/*
* JCommon : a free general purpose class library for the Java(tm) platform * * * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors. * * Project Info: http://www.jfree.org/jcommon/index.html * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This library is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. * * [Java is a trademark or registered trademark of Sun Microsystems, Inc. * in the United States and other countries.] * * ------------------- * ShapeUtilities.java * ------------------- * (C)opyright 2003-2008, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: ShapeUtilities.java,v 1.18 2008/06/02 06:58:28 mungady Exp $ * * Changes * ------- * 13-Aug-2003 : Version 1 (DG); * 16-Mar-2004 : Moved rotateShape() from RefineryUtilities.java to here (DG); * 13-May-2004 : Added new shape creation methods (DG); * 30-Sep-2004 : Added createLineRegion() method (DG); * Moved drawRotatedShape() method from RefineryUtilities class * to this class (DG); * 04-Oct-2004 : Renamed ShapeUtils --> ShapeUtilities (DG); * 26-Oct-2004 : Added a method to test the equality of two Line2D * instances (DG); * 10-Nov-2004 : Added new translateShape() and equal(Ellipse2D, Ellipse2D) * methods (DG); * 11-Nov-2004 : Renamed translateShape() --> createTranslatedShape() (DG); * 07-Jan-2005 : Minor Javadoc fix (DG); * 11-Jan-2005 : Removed deprecated code in preparation for 1.0.0 release (DG); * 21-Jan-2005 : Modified return type of RectangleAnchor.coordinates() * method (DG); * 22-Feb-2005 : Added equality tests for Arc2D and GeneralPath (DG); * 16-Mar-2005 : Fixed bug where equal(Shape, Shape) fails for two Polygon * instances (DG); * 01-Jun-2008 : Fixed bug in equal(GeneralPath, GeneralPath) method (DG); * */
import java.awt.Shape; import java.awt.geom.GeneralPath; /**
* Utility methods for {@link Shape} objects. * * @author David Gilbert */
public class Main {
/** * Creates a triangle shape that points upwards. * * @param s the size factor (equal to half the height of the triangle). * * @return A triangle shape. */ public static Shape createUpTriangle(final float s) { final GeneralPath p0 = new GeneralPath(); p0.moveTo(0.0f, -s); p0.lineTo(s, s); p0.lineTo(-s, s); p0.closePath(); return p0; }
}</source>
Creating a Shape Using Lines and Curves
<source lang="java">
import java.awt.geom.GeneralPath; public class BasicShapes {
public static void main(String[] args) { GeneralPath shape = new GeneralPath(); shape.moveTo(1, 1); shape.lineTo(2, 2); shape.quadTo(3, 3, 4, 4); shape.curveTo(5, 5, 6, 6, 7, 7); shape.closePath(); }
}</source>
Creating Basic Shapes
<source lang="java">
import java.awt.Shape; import java.awt.geom.Arc2D; import java.awt.geom.Ellipse2D; import java.awt.geom.Line2D; import java.awt.geom.Rectangle2D; import java.awt.geom.RoundRectangle2D; public class BasicShapes {
public static void main(String[] args) { int x1 = 1, x2 = 2, w = 3, h = 4, x = 5, y = 6, y1 = 1, y2 = 2, start = 3; Shape line = new Line2D.Float(x1, y1, x2, y2); Shape arc = new Arc2D.Float(x, y, w, h, start, 1, 1); Shape oval = new Ellipse2D.Float(x, y, w, h); Shape rectangle = new Rectangle2D.Float(x, y, w, h); Shape roundRectangle = new RoundRectangle2D.Float(x, y, w, h, 1, 2); }
}</source>
Draws a shape with the specified rotation about (x, y).
<source lang="java">
/*
* JCommon : a free general purpose class library for the Java(tm) platform * * * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors. * * Project Info: http://www.jfree.org/jcommon/index.html * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This library is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. * * [Java is a trademark or registered trademark of Sun Microsystems, Inc. * in the United States and other countries.] * * ------------------- * ShapeUtilities.java * ------------------- * (C)opyright 2003-2008, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: ShapeUtilities.java,v 1.18 2008/06/02 06:58:28 mungady Exp $ * * Changes * ------- * 13-Aug-2003 : Version 1 (DG); * 16-Mar-2004 : Moved rotateShape() from RefineryUtilities.java to here (DG); * 13-May-2004 : Added new shape creation methods (DG); * 30-Sep-2004 : Added createLineRegion() method (DG); * Moved drawRotatedShape() method from RefineryUtilities class * to this class (DG); * 04-Oct-2004 : Renamed ShapeUtils --> ShapeUtilities (DG); * 26-Oct-2004 : Added a method to test the equality of two Line2D * instances (DG); * 10-Nov-2004 : Added new translateShape() and equal(Ellipse2D, Ellipse2D) * methods (DG); * 11-Nov-2004 : Renamed translateShape() --> createTranslatedShape() (DG); * 07-Jan-2005 : Minor Javadoc fix (DG); * 11-Jan-2005 : Removed deprecated code in preparation for 1.0.0 release (DG); * 21-Jan-2005 : Modified return type of RectangleAnchor.coordinates() * method (DG); * 22-Feb-2005 : Added equality tests for Arc2D and GeneralPath (DG); * 16-Mar-2005 : Fixed bug where equal(Shape, Shape) fails for two Polygon * instances (DG); * 01-Jun-2008 : Fixed bug in equal(GeneralPath, GeneralPath) method (DG); * */
import java.awt.Graphics2D; import java.awt.Shape; import java.awt.geom.AffineTransform; /**
* Utility methods for {@link Shape} objects. * * @author David Gilbert */
public class Main {
/** * Draws a shape with the specified rotation about(x, y)
. * * @param g2 the graphics device (null
not permitted). * @param shape the shape (null
not permitted). * @param angle the angle (in radians). * @param x the x coordinate for the rotation point. * @param y the y coordinate for the rotation point. */ public static void drawRotatedShape(final Graphics2D g2, final Shape shape, final double angle, final float x, final float y) { final AffineTransform saved = g2.getTransform(); final AffineTransform rotate = AffineTransform.getRotateInstance( angle, x, y); g2.transform(rotate); g2.draw(shape); g2.setTransform(saved); }
}</source>
GlyphVector.getNumGlyphs()
<source lang="java">
import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.RenderingHints; import java.awt.Shape; import java.awt.font.FontRenderContext; import java.awt.font.GlyphVector; import java.awt.geom.AffineTransform; import java.awt.geom.Point2D; import javax.swing.JFrame; import javax.swing.JPanel; public class RotatedText extends JPanel {
public void paint(Graphics g) { Graphics2D g2d = (Graphics2D) g; g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); String s = "111111111111111111111111111111"; Font font = new Font("Courier", Font.PLAIN, 12); g2d.translate(20, 20); FontRenderContext frc = g2d.getFontRenderContext(); GlyphVector gv = font.createGlyphVector(frc, s); int length = gv.getNumGlyphs(); System.out.println(length); } public static void main(String[] args) { JFrame frame = new JFrame("Rotated text"); frame.add(new RotatedText()); frame.setSize(400, 300); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLocationRelativeTo(null); frame.setVisible(true); }
}</source>
Resize a shape
<source lang="java">
import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Point; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.geom.Rectangle2D; import javax.swing.JFrame; import javax.swing.JPanel; public class ResizeRectangle extends JPanel {
private int SIZE = 8; private Rectangle2D[] points = { new Rectangle2D.Double(50, 50,SIZE, SIZE), new Rectangle2D.Double(150, 100,SIZE, SIZE) }; Rectangle2D s = new Rectangle2D.Double(); ShapeResizeHandler ada = new ShapeResizeHandler(); public ResizeRectangle() { addMouseListener(ada); addMouseMotionListener(ada); } public void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2 = (Graphics2D) g; for (int i = 0; i < points.length; i++) { g2.fill(points[i]); } s.setRect(points[0].getCenterX(), points[0].getCenterY(), Math.abs(points[1].getCenterX()-points[0].getCenterX()), Math.abs(points[1].getCenterY()- points[0].getCenterY())); g2.draw(s); } class ShapeResizeHandler extends MouseAdapter { Rectangle2D r = new Rectangle2D.Double(0,0,SIZE,SIZE); private int pos = -1; public void mousePressed(MouseEvent event) { Point p = event.getPoint(); for (int i = 0; i < points.length; i++) { if (points[i].contains(p)) { pos = i; return; } } } public void mouseReleased(MouseEvent event) { pos = -1; } public void mouseDragged(MouseEvent event) { if (pos == -1) return; points[pos].setRect(event.getPoint().x,event.getPoint().y,points[pos].getWidth(), points[pos].getHeight()); repaint(); } } public static void main(String[] args) { JFrame frame = new JFrame("Resize Rectangle"); frame.add(new ResizeRectangle()); frame.setSize(300, 300); frame.setLocationRelativeTo(null); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); }
}</source>
Rotating a Shape
<source lang="java">
import java.awt.Rectangle; import java.awt.Shape; import java.awt.geom.AffineTransform; public class BasicShapes {
public static void main(String[] args) { AffineTransform tx = new AffineTransform(); tx.rotate(0.5); Rectangle shape = new Rectangle(1, 1, 1, 1); Shape newShape = tx.createTransformedShape(shape); }
}</source>
Scaling a Shape
<source lang="java">
import java.awt.Rectangle; import java.awt.Shape; import java.awt.geom.AffineTransform; public class BasicShapes {
public static void main(String[] args) { AffineTransform tx = new AffineTransform(); tx.scale(1, 1); Rectangle shape = new Rectangle(1, 1, 1, 1); Shape newShape = tx.createTransformedShape(shape); }
}</source>
Shearing a Shape
<source lang="java">
import java.awt.Rectangle; import java.awt.Shape; import java.awt.geom.AffineTransform; public class BasicShapes {
public static void main(String[] args) { AffineTransform tx = new AffineTransform(); tx.shear(1, 1); Rectangle shape = new Rectangle(1, 1, 1, 1); Shape newShape = tx.createTransformedShape(shape); }
}</source>
Translating a Shape
<source lang="java">
import java.awt.Rectangle; import java.awt.Shape; import java.awt.geom.AffineTransform; public class BasicShapes {
public static void main(String[] args) { AffineTransform tx = new AffineTransform(); tx.translate(1, 10); Rectangle shape = new Rectangle(1, 1, 1, 1); Shape newShape = tx.createTransformedShape(shape); }
}</source>