Java Tutorial/2D Graphics/Shape
Версия от 17:44, 31 мая 2010; (обсуждение)
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
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);
}
}
}
Combining Shapes
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)));
}
}
Creates a diagonal cross shape.
/*
* 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;
}
}
Creates a diamond shape.
/*
* 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;
}
}
Creates and returns a translated shape.
/*
* 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 (<code>null</code> 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);
}
}
Creates a triangle shape that points downwards.
/*
* 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;
}
}
Creates a triangle shape that points upwards.
/*
* 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;
}
}
Creating a Shape Using Lines and Curves
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();
}
}
Creating Basic Shapes
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);
}
}
Draws a shape with the specified rotation about (x, y).
/*
* 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 <code>(x, y)</code>.
*
* @param g2 the graphics device (<code>null</code> not permitted).
* @param shape the shape (<code>null</code> 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);
}
}
GlyphVector.getNumGlyphs()
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);
}
}
Resize a shape
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);
}
}
Rotating a Shape
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);
}
}
Scaling a Shape
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);
}
}
Shearing a Shape
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);
}
}
Translating a Shape
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);
}
}
