// 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(255,255,245); public TextField epsilon; private Paint paint; private Image im; private Graphics buf; public Button bupdate; Antenna ant; private BufferedImage bullet; public Instructions(Antenna ant){ super(); this.ant = ant; setLayout(null); getImages(); setBackground(bgcolor); bupdate = new Button("CLOSE"); bupdate.setBackground(new Color(240,240,255)); bupdate.setFont(new Font("SanSerif",Font.PLAIN,ant.font12)); add(bupdate); int buttonx = ant.s500+ant.s50; int buttony = ant.s300+ant.s40; 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; int nextX, newY; int xstart = ant.s50; int ystart = ant.s40; int xstart2 = ant.s300; int ystart2 = ant.s200; int deltaY = ant.s20; g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON); g.clearRect(0,0,getSize().width-1,getSize().height-1); g.setColor(Color.black); g.setFont(new Font("SanSerif",Font.BOLD,ant.font16)); g.drawString("Instructions", xstart,ystart); g.setFont(new Font("SanSerif",Font.PLAIN,ant.font14)); String s = "This module displays the far-field radiation patterns of "+ STR.BOLD+"E"+STR.ENDBOLD+" and "+ STR.BOLD+"S"+STR.ENDBOLD+STR.SUB+"av"+STR.ENDSUB; nextX = STR.displayString(s,g,xstart2,ystart); s = " in elevation (\u03b8-plane) and azimuth ("+"\u03c6"+"-plane) for two"; nextX = STR.displayString(s,g,xstart2,ystart + deltaY); s = " linear dipoles oriented along the z-direction."; nextX = STR.displayString(s,g,xstart2,ystart + 2*deltaY); newY = ystart + 4*deltaY; g.setColor(Color.red); g.setFont(new Font("SanSerif",Font.BOLD,ant.font15)); g.drawString("Input", xstart, newY); g.setColor(Color.black); g.setFont(new Font("SanSerif",Font.PLAIN,ant.font14)); newY += 15*deltaY/10; //INPUT //s = "\u2022 Current amplitudes and lengths of dipoles A and B"; //nextX = STR.displayString(s,g,xstart,newY); g.drawImage(bullet,xstart,newY-bullet.getHeight(),this); s = " Current amplitudes and lengths of dipoles A and B"; nextX = STR.displayString(s,g,xstart+bullet.getWidth(),newY); newY += deltaY; //s = "\u2022 Distance between dipoles A and B"; //nextX = STR.displayString(s,g,xstart,newY); g.drawImage(bullet,xstart,newY-bullet.getHeight(),this); s = " Distance between dipoles A and B"; nextX = STR.displayString(s,g,xstart+bullet.getWidth(),newY); newY += deltaY; //s = "\u2022 Phase of dipole B relative to that of A"; //nextX = STR.displayString(s,g,xstart,newY); g.drawImage(bullet,xstart,newY-bullet.getHeight(),this); s = " Phase of dipole B relative to that of A"; nextX = STR.displayString(s,g,xstart+bullet.getWidth(),newY); //OUTPUT g.setColor(Color.red); g.setFont(new Font("SanSerif",Font.BOLD,ant.font15)); newY += 2*deltaY; g.drawString("Displayed Information", xstart,newY); g.setColor(Color.black); g.setFont(new Font("SanSerif",Font.PLAIN,ant.font14)); newY += 15*deltaY/10; //s = "\u2022 Radiation patterns"; //nextX = STR.displayString(s,g,xstart,newY); g.drawImage(bullet,xstart,newY-bullet.getHeight(),this); s = " Radiation patterns"; nextX = STR.displayString(s,g,xstart+bullet.getWidth(),newY); //s = "\u2022 Total radiated power"; //nextX = STR.displayString(s,g,xstart,newY+deltaY); g.drawImage(bullet,xstart,newY+deltaY-bullet.getHeight(),this); s = " Total radiated power"; nextX = STR.displayString(s,g,xstart+bullet.getWidth(),newY+deltaY); //s = "\u2022 Directivity"; //nextX = STR.displayString(s,g,xstart,newY+2*deltaY); g.drawImage(bullet,xstart,newY+2*deltaY-bullet.getHeight(),this); s = " Directivity"; nextX = STR.displayString(s,g,xstart+bullet.getWidth(),newY+2*deltaY); drawCopyRight(g); } public void drawCopyRight(Graphics g) { int deltaY = ant.s20; int startingY = getSize().height - ant.s70; int startingX = 0; FontMetrics fm; g.setColor(Color.black); g.setFont(new Font("SanSerif",Font.PLAIN,ant.font14)); fm = g.getFontMetrics(); g.drawString("Application Design: Umberto Ravaioli",startingX+ant.s15,startingY+deltaY); 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); int lineLength = fm.stringWidth("Interactive JavaTM platform: www.amanogawa.com"); lineLength += ant.s10; g.drawString("All Rights Reserved",startingX+ant.s15,startingY+3*deltaY); g.drawLine(startingX,startingY+ant.s5, startingX+15+lineLength+ant.s10,startingY+ant.s5); g.drawLine(startingX+15+lineLength+ant.s10,startingY+ant.s5, startingX+15+lineLength+ant.s10,startingY+4*deltaY); } //---------------------------------------------------------------------------------------- }//End