// About.java /* A Java class for * LineImpedance.java * Electromagnetic Transmission Line Applet * Applet without Smith Chart - Prepared by Umberto Ravaioli * for 6th edition of Fundamentals of Applied Electromagnetics Book * May 2009 - All Rights Reserved */ import java.io.*; import java.applet.*; import java.awt.*; import java.awt.geom.*; import java.awt.image.*; import java.awt.event.*; import java.awt.font.*; import java.net.URL; import java.text.*; import java.util.*; import java.util.Map; import java.util.Hashtable; import java.util.jar.Attributes; public class Instructions extends Panel { private static final Color bgcolor = new Color(255,255,245); //private static final Color bgcolor = Color.white; public TextField epsilon; private Paint paint; private Image im; private Graphics buf; //Mod1State state; public Button bupdate; public Instructions(){ super(); //this.state = state; setLayout(null); setBackground(bgcolor); bupdate = new Button("CLOSE"); bupdate.setBackground(new Color(240,240,255)); add(bupdate); //int buttonx = 380; //int buttony = 380; int buttonx = 1085; //int buttony = 440; int buttony = 272; int buttonwide = 70; int buttonheight = 27; bupdate.setBounds(buttonx,buttony,buttonwide,buttonheight); Panel ps7 = new Panel(); ps7.setBackground(Color.lightGray); add(ps7); ps7.setBounds(buttonx-1,buttony-1,buttonwide+2,buttonheight+2); Panel ps8 = new Panel(); ps8.setBackground(Color.black); add(ps8); ps8.setBounds(buttonx-2,buttony-2,buttonwide+4,buttonheight+4); } public void paint(Graphics g){ if(im == null){ im = createImage(getSize().width,getSize().height); buf = im.getGraphics(); drawCanvas(buf); } else{ drawCanvas(buf); } g.drawImage(im,0,0,null); } //Addition to reduce flicker new routine public void update(Graphics g){ // added to avoid clearing paint(g); } public void clear(){ this.getGraphics().clearRect(0,0,getSize().width,getSize().height); repaint(); } public void drawCanvas(Graphics g){ FontMetrics fm; Graphics2D g2d = (Graphics2D)g; g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); g.clearRect(0,0,getSize().width-1,getSize().height-1); //g.setFont(font_one); //fm = g.getFontMetrics(); //boolean saveOldFlag = MaestroG.useBiggerFont; //MaestroG.useBiggerFont = false; g.setColor(Color.black); //g.setFont(state.ttfFont.deriveFont(Font.BOLD,16f)); g.setFont(new Font("SanSerif",Font.BOLD,16)); g.drawString("Instructions", 15,25); //g.setFont(state.ttfFont.deriveFont(14f)); //g.setFont(new Font("SanSerif",Font.PLAIN,14)); //g.drawString("This module can accomodate linearly polarized plane "+ // "waves in both lossy and lossless media.",15,50); int xcolumn1 = 15; int xcolumn2 = 460; int xcolumn3 = 835; int ystart; int y; int ytext; int deltaY = 20; String s; int nextX; ystart = 70; ytext = ystart; // ASSUMPTIONS g.setColor(Color.red); //g.setFont(state.ttfFont.deriveFont(Font.BOLD,15f)); g.setFont(new Font("SanSerif",Font.BOLD,15)); g.drawString("Assumptions", xcolumn1,ytext); g.setColor(Color.black); //g.setFont(state.ttfFont.deriveFont(14f)); g.setFont(new Font("SanSerif",Font.PLAIN,14)); ytext += deltaY; //INPUT s = "\u2022 Step-index fiber - uniform refractive index in the core"; nextX = STR.displayString(s,g,xcolumn1,ytext); ytext += deltaY; s = "\u2022 Multimode propagation ( fiber radius "+STR.ITAL+"R >> \u03bb"+STR.ENDITAL+" )"; nextX = STR.displayString(s,g,xcolumn1,ytext); ytext += deltaY; s = "\u2022 Ray optics limit - modes of propagation are characterized"; nextX = STR.displayString(s,g,xcolumn1,ytext); ytext += deltaY; s = " by angles of entrance with quasi-continuum distribution"; nextX = STR.displayString(s,g,xcolumn1,ytext); ystart = 70; ytext = ystart; // INPUT g.setColor(Color.red); //g.setFont(state.ttfFont.deriveFont(Font.BOLD,15f)); g.setFont(new Font("SanSerif",Font.BOLD,15)); g.drawString("Input", xcolumn2,ytext); g.setColor(Color.black); //g.setFont(state.ttfFont.deriveFont(14f)); g.setFont(new Font("SanSerif",Font.PLAIN,14)); ytext += deltaY; //INPUT s = "\u2022 Relative permittivity \u03b5"+STR.SUB+"r"+STR.ENDSUB+" or index of refraction "+STR.ITAL+"n"+STR.ENDITAL; nextX = STR.displayString(s,g,xcolumn2,ytext); ytext += deltaY; s = " of dielectric media 1, 2, and 3"; nextX = STR.displayString(s,g,xcolumn2,ytext); ytext += deltaY; s = "\u2022 Wave frequency "+STR.ITAL+"f"+STR.ENDITAL; nextX = STR.displayString(s,g,xcolumn2,ytext); ytext += deltaY; s = "\u2022 Angle of entrance "+STR.ITAL+"\u03b8"+STR.ENDITAL+""+STR.SUB+"i"+STR.ENDSUB+""; nextX = STR.displayString(s,g,xcolumn2,ytext); ytext += deltaY; s = "\u2022 Radius of the core "+STR.ITAL+"R"+STR.ENDITAL+" and length of the fiber "+STR.ITAL+"l"+STR.ENDITAL; nextX = STR.displayString(s,g,xcolumn2,ytext); g.setColor(Color.blue.darker()); ytext += 3*deltaY; s = "To guide rays by total internal reflection, the index of refraction in the core of the fiber must be"; nextX = STR.displayString(s,g,xcolumn2-40,ytext); ytext += deltaY; s = "larger than in the cladding. Larger index difference between core and cladding increases light"; nextX = STR.displayString(s,g,xcolumn2-40,ytext); ytext += deltaY; s = "acceptance but also increases modal dispersion, thus degrading the bandwidth of the fiber."; nextX = STR.displayString(s,g,xcolumn2-40,ytext); ytext += deltaY; s = "The bandwidth is also inversely proportional to the length of the fiber."; nextX = STR.displayString(s,g,xcolumn2-40,ytext); ystart = 70; ytext = ystart; // OUTPUT g.setColor(Color.red); //g.setFont(state.ttfFont.deriveFont(Font.BOLD,15f)); g.setFont(new Font("SanSerif",Font.BOLD,15)); g.drawString("Displayed Information", xcolumn3,ytext); g.setColor(Color.black); //g.setFont(state.ttfFont.deriveFont(14f)); g.setFont(new Font("SanSerif",Font.PLAIN,14)); ytext += deltaY; s = "\u2022 Angles of propagation and ray paths"; nextX = STR.displayString(s,g,xcolumn3,ytext); ytext += deltaY; // CHANGE ============================================================== s = "\u2022 Maximum angle of acceptance for optical"; nextX = STR.displayString(s,g,xcolumn3,ytext); ytext += deltaY; s = " guidance "+STR.ITAL+"\u03b8"+STR.ENDITAL+""+STR.SUB+"imax"+STR.ENDSUB+""; nextX = STR.displayString(s,g,xcolumn3,ytext); //====================================================================== ytext += deltaY; s = "\u2022 Numerical Aperture (NA)"; nextX = STR.displayString(s,g,xcolumn3,ytext); ytext += deltaY; s = "\u2022 Properties of optical propagation"; nextX = STR.displayString(s,g,xcolumn3,ytext); ytext += deltaY; s = "\u2022 Maximum data rate limited by modal dispersion"; nextX = STR.displayString(s,g,xcolumn3,ytext); drawCopyRight(g); //MaestroG.useBiggerFont = saveOldFlag; } public void drawCopyRight(Graphics g) { int deltaY = 20; int startingY = getSize().height - 70; int startingX = 0; FontMetrics fm; g.setColor(Color.black); g.setColor(Color.black); //g.setFont(normalfont14); //g.setFont(state.ttfFont.deriveFont(14f)); g.setFont(new Font("SanSerif",Font.PLAIN,14)); fm = g.getFontMetrics(); g.drawString("Applet Design: Umberto Ravaioli", startingX+10,startingY+deltaY); //MaestroG.superscripter("Interactive Java","TM"," platform: www.amanogawa.com", // g,14,startingX,startingY+2*deltaY); String s = "Interactive Java"+STR.SUP+"TM"+STR.ENDSUP+" platform: www.amanogawa.com"; int nextX = STR.displayString(s,g,startingX+10,startingY+2*deltaY); int lineLength = fm.stringWidth("Interactive JavaTM platform: www.amanogawa.com"); lineLength+= 10; //g.setFont(state.ttfFont.deriveFont(14f)); g.drawString("All Rights Reserved",startingX+10,startingY+3*deltaY); g.drawLine(startingX,startingY+5, startingX+lineLength+10,startingY+5); g.drawLine(startingX+lineLength+10,startingY+5, startingX+lineLength+10,startingY+4*deltaY); } //---------------------------------------------------------------------------------------- }//End