Graphics Now - Cartesian Lines

Graphics Now
Cartesian Line Demo 2

Line Demo 2

HTML Source

Put this HTML code anywhere on an HTML page. It will call the Java applet NetscapeApplet, which will then call the Java application LineDemo2. WIDTH and HEIGHT define the size of the applet on the page.

<APPLET CODE="NetscapeApplet" WIDTH=100 HEIGHT=100>
  <PARAM NAME="ApplicationClass" VALUE="LineDemo2">
  Your browser does not support Java applets
</APPLET>

NetscapeApplet

NetscapeApplet is part of the Netscape Internet Foundation Classes.

LineDemo2 Source

This is the Java code for the application. The init method sets LineDemoView2 as the (only) view for the application. LineDemoView2 must be compiled before LineDemo2 can be compiled.

import netscape.application.*;
import LineDemoView2;

public class LineDemo2 extends Application {
  static int Width;
  static int Height;

/** For a java applet, only the init ()
    method is required.
*/

  public void init () {
    super.init ();
    LineDemoView2 Canvas = new LineDemoView2 (100, 100);
    mainRootView().addSubview (Canvas);
  }

/** Providing a main (String) method allows 
    the application to be run also as a Standalone.
*/

  public static void main (String [] args) {
    Width = 100;
    Height = 100;
    LineDemo2 App = new LineDemo2();
    ExternalWindow MainWindow = new ExternalWindow();
    App.setMainRootView (MainWindow.rootView());
    Size size = MainWindow.windowSizeForContentSize
                  (Width, Height);
    MainWindow.setBounds (0, 0, size.width, size.height);
    MainWindow.show ();
    App.run ();
    System.exit (0);
  }
}

LineDemoView2 Source

This is the Java code for the view. The constructor establishes the size, and the drawView method draws the line.

import netscape.application.*;
import Cartesian.*;

public class LineDemoView2 extends View  {

/** The constructor sets the dimensions of the view.
 * @param Width View Width
 * @param Height View Height
*/
  public LineDemoView2 (int Width, int Height) {
    super (0, 0, Width, Height);
    setBuffered (false);
  }

/** The drawView method is
 *  where the actual drawing is done.
 * @param Display Graphics context
*/
  public void drawView (Graphics Display) {
    Cartesian Canvas 
      = new Cartesian (Display, localBounds());
/* Declare the points */
    C_Point A = new C_Point (10, 90);
    C_Point B = new C_Point (70, 20);

/* Begin drawing calls */
    Canvas.Line (A, B);
/* End drawing calls */
  }
}

The applet:

Your browser does not support Java applets
Line Demo 2

Demo Applet Source:

	Lines Page
	Line Demo 1 Source

See Also:

	Cartesian Points
	Cartesian Class

	Cartesian Index
	Graphics Now Home Page