// Instructions.java import java.awt.*; 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(255,255,250); public TextField epsilon; private Paint paint; private Image im; private Graphics buf; public Button bupdate; DipoleAnt ant; private BufferedImage bullet; public Instructions(DipoleAnt ant){ super(); this.ant = ant; setLayout(null); getImages(); setBackground(bgcolor); bupdate = new Button("CLOSE"); bupdate.setFont(new Font("SanSerif",Font.BOLD,ant.font12)); bupdate.setBackground(new Color(240,240,255)); add(bupdate); //int buttonx = 410; //int buttony = 440; int buttonx = ant.s500; int buttony = ant.s300 + ant.s35; int buttonwide = ant.s70; int buttonheight = ant.s27; 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); } private void getImages() { // read in the bullet image, because CHEERPJ does not render this // symbol in any font! (java to javascript converter) try { //bullet = ImageIO.read(getClass().getResource("bullet.png")); BufferedImage img = ImageIO.read(getClass().getResource("bullet.png")); int targetWidth = (int) (ant.sfactor * img.getWidth()); int targetHeight = (int) (ant.sfactor * img.getHeight()); bullet = new BufferedImage(targetWidth, targetHeight, BufferedImage.TYPE_INT_RGB); Graphics2D graphics2D = bullet.createGraphics(); graphics2D.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR); graphics2D.drawImage(img, 0, 0, targetWidth, targetHeight, 0, 0, img.getWidth(), img.getHeight(), null); graphics2D.dispose(); } catch (IOException e) { e.printStackTrace(); } } 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.setColor(Color.black); int xshift = ant.s150; //ant.s35; int xshift2 = ant.s150; g.setFont(new Font("SanSerif",Font.BOLD,ant.font16)); g.drawString("Instructions", ant.s15,ant.s25); String s; g.setFont(new Font("SanSerif",Font.PLAIN,ant.font14)); s = "This module displays the far-field patterns of electric field "+STR.BOLD+"E"+STR.ENDBOLD+" and power density "+STR.BOLD+"S"+STR.ENDBOLD+STR.SUB+"av"+STR.ENDSUB; int nextX = STR.displayString(s,g,xshift2,ant.s25); s = "in elevation (\u03b8-plane)"+" and azimuth (\u03c6-plane) for a linear dipole oriented along the z-axis. "; nextX = STR.displayString(s,g,xshift2,ant.s45); s = "Under far-field approximation, electric and magnetic field have the same radiation pattern."; nextX = STR.displayString(s,g,xshift2,ant.s65); int deltaY = ant.s20; int newY = ant.s100+deltaY; int myX = xshift; int newX = xshift + ant.s300+ant.s70; //INPUT g.setColor(Color.red); g.setFont(new Font("SanSerif",Font.BOLD,ant.font15)); g.drawString("Input", myX,newY-ant.s10); g.setColor(Color.black); g.setFont(new Font("SanSerif",Font.PLAIN,ant.font14)); fm = g.getFontMetrics(); //s = "\u2022 Dipole length"; //nextX = STR.displayString(s,g,myX,newY+deltaY); g.drawImage(bullet,myX,newY+deltaY-bullet.getHeight(),this); s = " Dipole length"; nextX = STR.displayString(s,g,myX+bullet.getWidth(),newY+deltaY); //s = "\u2022 Maximum dipole current amplitude "; //nextX = STR.displayString(s,g,myX,newY+2*deltaY); g.drawImage(bullet,myX,newY+2*deltaY-bullet.getHeight(),this); s = " Maximum dipole current amplitude "; nextX = STR.displayString(s,g,myX+bullet.getWidth(),newY+2*deltaY); //int xx = fm.stringWidth(s) + 1; int xx = bullet.getWidth() + fm.stringWidth(s) + 1; g.setFont(new Font("Serif",Font.BOLD,ant.font16)); s = ""+STR.BOLD+"I"+STR.ENDBOLD+STR.SUB+"0"+STR.ENDSUB; nextX = STR.displayString(s,g,myX+xx,newY+2*deltaY); //ASSUMPTIONS g.setColor(Color.red); g.setFont(new Font("SanSerif",Font.BOLD,ant.font15)); g.drawString("Assumptions", myX,newY+4*deltaY); g.setColor(Color.black); g.setFont(new Font("SanSerif",Font.PLAIN,ant.font14)); //s = "\u2022 Far-field approximation"; //nextX = STR.displayString(s,g,myX,newY+5*deltaY); g.drawImage(bullet,myX,newY+5*deltaY-bullet.getHeight(),this); s = " Far-field approximation"; nextX = STR.displayString(s,g,myX+bullet.getWidth(),newY+5*deltaY); //s = "\u2022 Free space propagation"; //nextX = STR.displayString(s,g,myX,newY+6*deltaY); g.drawImage(bullet,myX,newY+6*deltaY-bullet.getHeight(),this); s = " Free space propagation"; nextX = STR.displayString(s,g,myX+bullet.getWidth(),newY+6*deltaY); //s = "\u2022 Negligible gap between dipole wires"; //nextX = STR.displayString(s,g,myX,newY+7*deltaY); g.drawImage(bullet,myX,newY+7*deltaY-bullet.getHeight(),this); s = " Negligible gap between dipole wires"; nextX = STR.displayString(s,g,myX+bullet.getWidth(),newY+7*deltaY); //s = "\u2022 Ideal 1D thin wires"; //nextX = STR.displayString(s,g,myX,newY+8*deltaY); g.drawImage(bullet,myX,newY+8*deltaY-bullet.getHeight(),this); s = " Ideal 1D thin wires"; nextX = STR.displayString(s,g,myX+bullet.getWidth(),newY+8*deltaY); //s = "\u2022 Symmetric dipole "; //nextX = STR.displayString(s,g,myX,newY+9*deltaY); g.drawImage(bullet,myX,newY+9*deltaY-bullet.getHeight(),this); s = " Symmetric dipole "; nextX = STR.displayString(s,g,myX+bullet.getWidth(),newY+9*deltaY); //OUTPUT g.setColor(Color.red); g.setFont(new Font("SanSerif",Font.BOLD,ant.font15)); g.drawString("Displayed Information", newX,newY-ant.s10); g.setColor(Color.black); g.setFont(new Font("SanSerif",Font.PLAIN,ant.font14)); newY += ant.s20; //s = "\u2022 Radiation patterns"; //nextX = STR.displayString(s,g,newX,newY); g.drawImage(bullet,newX,newY-bullet.getHeight(),this); s = " Radiation patterns"; nextX = STR.displayString(s,g,newX+bullet.getWidth(),newY); //s = "\u2022 Total radiated power"; //nextX = STR.displayString(s,g,newX,newY+deltaY); g.drawImage(bullet,newX,newY+deltaY-bullet.getHeight(),this); s = " Total radiated power"; nextX = STR.displayString(s,g,newX+bullet.getWidth(),newY+deltaY); //s = "\u2022 Radiation resistance"; //nextX = STR.displayString(s,g,newX,newY+2*deltaY); g.drawImage(bullet,newX,newY+2*deltaY-bullet.getHeight(),this); s = " Radiation resistance"; nextX = STR.displayString(s,g,newX+bullet.getWidth(),newY+2*deltaY); //s = "\u2022 Directivity"; //nextX = STR.displayString(s,g,newX,newY+3*deltaY); g.drawImage(bullet,newX,newY+3*deltaY-bullet.getHeight(),this); s = " Directivity"; nextX = STR.displayString(s,g,newX+bullet.getWidth(),newY+3*deltaY); drawCopyRight(g); //MaestroG.useBiggerFont = saveOldFlag; } public void drawCopyRight(Graphics g) { int deltaY = ant.s20; int startingY = getSize().height - ant.s75; int startingX = 0; FontMetrics fm; g.setColor(Color.black); g.setColor(Color.black); //g.setFont(normalfont14); g.setFont(new Font("SanSerif",Font.PLAIN,ant.font14)); fm = g.getFontMetrics(); g.drawString("Application Design: Umberto Ravaioli", startingX+ant.s15,startingY+deltaY+ant.s5); String s = "Interactive Java"+STR.SUP+"TM"+STR.ENDSUP+ " platform: www.amanogawa.com"; int nextX = STR.displayString(s,g,startingX+ant.s15,startingY+2*deltaY+ant.s5); int lineLength = fm.stringWidth("Interactive JavaTM platform: www.amanogawa.com"); lineLength+= ant.s10; g.drawString("All Rights Reserved",startingX+ant.s15,startingY+3*deltaY+ant.s5); g.drawLine(startingX,startingY+ant.s5, startingX+ant.s15+lineLength+ant.s10,startingY+ant.s5); g.drawLine(startingX+ant.s15+lineLength+ant.s10,startingY+ant.s5, startingX+ant.s15+lineLength+ant.s10,startingY+4*deltaY); } //---------------------------------------------------------------------------------------- }//End