George2 at 20:48, 17 November 2014

2014-11-17T20:48:59Z

George2: Created page with " mport java.awt.; import javax.swing.; /** * This class plots a sine curve between -2PI and 2PI. */ public class SinusoidApp { // whether..."

2014-11-17T20:48:31Z

Created page with "<source lang="java"> mport java.awt.*; import javax.swing.*; ‎* * This class plots a sine curve between -2*PI and 2*PI.: public class SinusoidApp { // whether..."

New page

<source lang="java">

mport java.awt.*;
import javax.swing.*;

/**
* This class plots a sine curve between -2*PI and 2*PI.
*/

public class SinusoidApp
{

// whether or not to draw a connecting line between the dots
static boolean drawConnectingLine = true;

public static void main (String[] args)
{
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
JFrame frame = new JFrame("Test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Sinusoid s = new Sinusoid();
s.setPreferredSize(new Dimension(300, 200));
frame.getContentPane().add(s);

frame.pack();
frame.setVisible(true);
}
});
}

static class Sinusoid extends JPanel
{
int previousY = 0;

double degToRad (int deg)
{
return ((2*Math.PI)/360.0) * deg;
}

int scale (int i, int width)
{
return (int) ((i/(double)width)*720.0);
}

public void paintComponent (Graphics g)
{
super.paintComponent(g);
int width = getWidth();
int height = getHeight();
for (int i=0; i<width; i++)
{
int y = (int) Math.round((-Math.sin(degToRad(scale(i,width)))+1)*height/2.0);
if (drawConnectingLine && i>0)
{
g.drawLine(i-1, previousY, i, y);
} else {
g.drawLine(i, y, i, y);
}
previousY = y;
}
}
}
}

</source>

← Older revision		Revision as of 20:48, 17 November 2014
Line 2:		Line 2:


−	~~mport~~ java.awt.*;	+	import java.awt.*;
	import javax.swing.*;		import javax.swing.*;

SinusoidApp.java - Revision history

George2 at 20:48, 17 November 2014

George2: Created page with " mport java.awt.*; import javax.swing.*; /** * This class plots a sine curve between -2*PI and 2*PI. */ public class SinusoidApp { // whether..."

George2: Created page with " mport java.awt.; import javax.swing.; /** * This class plots a sine curve between -2PI and 2PI. */ public class SinusoidApp { // whether..."