// 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; import java.awt.image.BufferedImage; //import java.io.IOException; import javax.imageio.ImageIO; public class Instructions extends Panel { //private static final Color bgcolor = new Color(236,236,236); private static final Color bgcolor = Color.white; public TextField epsilon; private Paint paint; private Image im; private Graphics buf; private BufferedImage figure; //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 = 410; //int buttony = 440; int buttonx = 650; int buttony = 245; 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)); try { figure = ImageIO.read(getClass().getResource("mod9.4.gif")); } catch (IOException e) { e.printStackTrace(); } g.drawString("Instructions", 20,25); //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); String s; int nextX; g.setColor(Color.red); //g.setFont(state.ttfFont.deriveFont(Font.BOLD,15f)); g.setFont(new Font("SanSerif",Font.BOLD,15)); g.drawString("Input", 25,60); g.setColor(Color.black); //g.setFont(state.ttfFont.deriveFont(14f)); g.setFont(new Font("SanSerif",Font.PLAIN,14)); int deltaY = 20; //INPUT s = "\u2022 Antenna diameter "+STR.ITAL+"d"+STR.ENDITAL+ " = 2"+STR.ITAL+"a"+STR.ENDITAL; nextX = STR.displayString(s,g,25,80); s = "\u2022 Taper factor"+STR.ITAL+"\u03b1"+STR.ENDITAL; nextX = STR.displayString(s,g,25,80+deltaY); s = " The small horn illuminates the dish antenna with:"; nextX = STR.displayString(s,g,350,2*deltaY); g.setFont(new Font("Serif",Font.PLAIN,14)); s = " ~"; //"\u007e"; nextX = STR.displayString(s,g,350+2,4*deltaY-10); g.setFont(new Font("SanSerif",Font.PLAIN,14)); s = " "+STR.ITAL+"E"+STR.ENDITAL+STR.SUBITAL+"a"+STR.ENDSUBITAL+ "("+STR.ITAL+"r"+STR.ENDITAL+STR.SUBITAL+"a"+STR.ENDSUBITAL+ ") = "+STR.ITAL+"E"+STR.ENDITAL+STR.SUB+"0"+STR.ENDSUB; nextX = STR.displayString(s,g,350,4*deltaY); //s = "("; //nextX = STR.displayString(s,g,nextX,4*deltaY+5); Arc2D.Double arc_one = new Arc2D.Double(nextX, (3*deltaY)-5, 14,2*deltaY, 90,180,0); g2d.draw(arc_one); s = "1 - "+STR.ITAL+"\u03b1"+STR.ENDITAL; nextX = STR.displayString(s,g,nextX+5,4*deltaY); int saveNextX = nextX; //s = "_"; //nextX = STR.displayString(s,g,nextX,4*deltaY-10); g.drawLine(nextX,4*deltaY-5,nextX+18,4*deltaY-5); s = STR.ITAL+"a"+STR.ENDITAL; nextX = STR.displayString(s,g,saveNextX+4,5*deltaY-13); s = STR.ITAL+"r"+STR.ENDITAL+STR.SUBITAL+"a"+STR.ENDSUBITAL; nextX = STR.displayString(s,g,saveNextX,3*deltaY+7); //s = ")"; //nextX = STR.displayString(s,g,nextX,4*deltaY+5); arc_one = new Arc2D.Double(nextX-5,(3*deltaY)-5,14,2*deltaY, -90,180,0); g2d.draw(arc_one); s = ", 0 \u2264 "+STR.ITAL+"\u03b1"+STR.ENDITAL+" \u2264 1."; nextX = STR.displayString(s,g,nextX+15,4*deltaY); s = " Uniform illumination (no taper): "+STR.ITAL+"\u03b1"+ STR.ENDITAL+" = 0"; nextX = STR.displayString(s,g,350,6*deltaY); s = " Steepest taper: "+STR.ITAL+"\u03b1"+STR.ENDITAL+" = 1"; nextX = STR.displayString(s,g,350,7*deltaY); //OUTPUT g.setColor(Color.red); //g.setFont(state.ttfFont.deriveFont(Font.BOLD,15f)); g.setFont(new Font("SanSerif",Font.BOLD,15)); int newY = 90+2*deltaY+10; g.drawString("Displayed Information", 25,newY); g.setColor(Color.black); //g.setFont(state.ttfFont.deriveFont(14f)); g.setFont(new Font("SanSerif",Font.PLAIN,14)); newY += 20; s = "\u2022 Radiation pattern"; nextX = STR.displayString(s,g,25,newY); s = "\u2022 Antenna directivity "+STR.ITAL+"D"+STR.ENDITAL; nextX = STR.displayString(s,g,25,newY+deltaY); s = "\u2022 Antenna beamwidth "+STR.ITAL+"\u03b2"+STR.ENDITAL; nextX = STR.displayString(s,g,25,newY+2*deltaY); g.drawImage(figure,435,8*deltaY,this); s = STR.ITAL+"r"+STR.ENDITAL+STR.SUBITAL+"a"+STR.ENDSUBITAL; nextX = STR.displayString(s,g,440,165); s = STR.ITAL+"a"+STR.ENDITAL; nextX = STR.displayString(s,g,430,185); s = "0"; nextX = STR.displayString(s,g,430,215); 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+15,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+15,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+15,startingY+3*deltaY); g.drawLine(startingX,startingY+5, startingX+15+lineLength+10,startingY+5); g.drawLine(startingX+15+lineLength+10,startingY+5, startingX+15+lineLength+10,startingY+4*deltaY); } //---------------------------------------------------------------------------------------- }//End