programming-examples/java/Computer_Graphics/TextExample.java

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2019-11-15 12:59:38 +01:00
import java.awt.*;
import java.awt.geom.*;
import java.awt.font.*;
/**
* An example for using text within Java 2D.
*
* @author Frank Klawonn
* Last change 27.05.2005
*/
public class TextExample extends Frame
{
/**
* Constructor
*/
TextExample()
{
//Enables the closing of the window.
addWindowListener(new MyFinishWindow());
}
public void paint(Graphics g)
{
Graphics2D g2d = (Graphics2D) g;
//Drawing a text with a chosen font.
Font f1 = new Font("Lucida Bright",Font.BOLD,20);
g2d.setFont(f1);
g2d.drawString("Font Lucida Bright in Fettschrift",50,100);
//The letters of the following string will be transformed (rotated) individually.
String s = "somersault";
Font f2 = new Font("serif",Font.PLAIN,50);
g2d.setFont(f2);
FontRenderContext frc = g2d.getFontRenderContext();
//Generate a GlyphVector.
GlyphVector gv = f2.createGlyphVector(frc, s);
int lengthOfS = gv.getNumGlyphs();
//Each letter is rotated a little bit mor and shifted to the right.
AffineTransform at = new AffineTransform();
AffineTransform shift = new AffineTransform();
shift.setToTranslation(100,300);
Point2D p;
Shape glyph;
double theta;
g2d.setPaint(Color.red);
for (int i=0; i<lengthOfS; i++)
{
//Position of the letter.
p = gv.getGlyphPosition(i);
//Compute the rotation angle.
theta = (2*Math.PI*i)/(lengthOfS-1);
//Define the rotation.
at.setToRotation(theta,p.getX(),p.getY());
//The (accumulated) translation.
shift.translate(10,0);
//The accumulated translation and rotation.
at.preConcatenate(shift);
//Change the glyph into a Shape.
glyph = gv.getGlyphOutline(i);
//Transformation of the letter (as a Shape).
glyph = at.createTransformedShape(glyph);
//Draw the letter (the transformed Shape).
g2d.fill(glyph);
}
}
public static void main(String[] argv)
{
TextExample f = new TextExample();
f.setTitle("Use of text and letters");
f.setSize(600,600);
f.setVisible(true);
}
}