//RadarCanvas.java import java.awt.*; import java.applet.*; import java.lang.*; public class RadarCanvas extends Canvas{ private Image im; private Graphics buf; Rectangle r; Antenna ant; private static final Color bgcolor = new Color(216,216,191); boolean is_theta_plane; RadarCanvas(Antenna ant, boolean is_theta_plane){ super(); this.ant=ant; this.is_theta_plane=is_theta_plane; } public void drawCanvas(Graphics g){ //public void paint(Graphics g){ Graphics2D g2d = (Graphics2D)g; int i; double theta, phi; double geom; r=getBounds(); g.setColor(Color.lightGray); //g.setColor(bgcolor); g.fill3DRect(0,0,r.width-1,r.height-1,true); g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON); g.setColor(Color.white); //draw concentric circles g.drawOval((int)(r.width*0.4),(int)(r.width*0.4),(int)(r.width*0.20),(int)(r.width*0.20)); g.drawOval((int)(r.width*0.3),(int)(r.width*0.3),(int)(r.width*0.40),(int)(r.width*0.40)); g.drawOval((int)(r.width*0.2),(int)(r.width*0.2),(int)(r.width*0.60),(int)(r.width*0.60)); g.drawOval((int)(r.width*0.1),(int)(r.width*0.1),(int)(r.width*0.80),(int)(r.width*0.80)); //draw radial lines g.drawLine((int)(r.width*0.1),(int)(r.width*0.5),(int)(r.width*0.9),(int)(r.width*0.5)); g.drawLine((int)(r.width*0.5),(int)(r.width*0.1),(int)(r.width*0.5),(int)(r.width*0.9)); g.drawLine( (int)(r.width*(0.5+0.4*(0.866))), (int)(r.width*(0.5+0.4*(0.5))), (int)(r.width*(0.5-0.4*(0.866))), (int)(r.width*(0.5-0.4*(0.5)))); g.drawLine( (int)(r.width*(0.5-0.4*(0.866))), (int)(r.width*(0.5+0.4*(0.5))), (int)(r.width*(0.5+0.4*(0.866))), (int)(r.width*(0.5-0.4*(0.5)))); g.drawLine( (int)(r.width*(0.5+0.4*(0.5))), (int)(r.width*(0.5+0.4*(0.866))), (int)(r.width*(0.5-0.4*(0.5))), (int)(r.width*(0.5-0.4*(0.866)))); g.drawLine( (int)(r.width*(0.5-0.4*(0.5))), (int)(r.width*(0.5+0.4*(0.866))), (int)(r.width*(0.5+0.4*(0.5))), (int)(r.width*(0.5-0.4*(0.866)))); //g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_OFF); g.setColor(Color.black); //write the angles if(this.is_theta_plane==true) { g.setColor(Color.red.darker()); g.setFont(new Font("Serif",Font.PLAIN,18)); g.drawString("\u03b8",20,20); g.setColor(Color.blue); g.setFont(new Font("Serif",Font.PLAIN,13)); g.drawString("\u03c6 = "+(int)(ant.phicontrol.phi)+"\u00ba",r.width-50,20); g.setColor(Color.black); g.setFont(new Font("Sanserif",Font.PLAIN,11)); g.drawString("0\u00ba",(int)(r.width* (0.5-0.42*(0.030))),(int)(r.width*(0.5+0.42*(-1.00)))); g.drawString("30\u00ba",(int)(r.width* (0.5+0.42*(0.500))),(int)(r.width*(0.5+0.44*(-0.866)))); g.drawString("30\u00ba",(int)(r.width* (0.5-0.44*(0.500))-3),(int)(r.width*(0.5+0.44*(-0.866)))); g.drawString("60\u00ba",(int)(r.width* (0.5+0.42*(0.9))),(int)(r.width*(0.5+0.44*(-0.50)))); g.drawString("60\u00ba",(int)(3+r.width* (0.5-0.44*(1.0))),(int)(r.width*(0.5+0.44*(-0.50)))); g.drawString("90\u00ba",(int)(r.width* (0.5+0.42*(1.000))),(int)(r.width*(0.5+0.30*(0.05)))); g.drawString("90\u00ba",(int)(3+r.width* (0.5-0.46*(1.050))),(int)(r.width*(0.5+0.30*(0.05)))); g.drawString("120\u00ba",(int)(r.width*(0.5+0.43*(0.866))),(int)(r.width*(0.5+0.48*(0.50)))); g.drawString("120\u00ba",(int)(3+r.width*(0.5-0.48*(0.95))),(int)(r.width*(0.5+0.48*(0.50)))); g.drawString("150\u00ba",(int)(r.width*(0.5+0.42*(0.450))),(int)(r.width*(0.5+0.47*(0.866)))); g.drawString("150\u00ba",(int)(r.width*(0.5-0.47*(0.550))),(int)(r.width*(0.5+0.47*(0.866)))); g.drawString("180\u00ba",(int)(r.width*(0.5-0.42*(0.070))),(int)(r.width*(0.5+0.44*(1.05)))); } else{ g.setColor(Color.red.darker()); g.setFont(new Font("Serif",Font.PLAIN,18)); g.drawString("\u03c6",20,20); g.setColor(Color.blue); g.setFont(new Font("Serif",Font.PLAIN,13)); g.drawString("\u03b8 = 90\u00ba",r.width-45,20); g.setFont(new Font("Sanserif",Font.PLAIN,11)); g.setColor(Color.black); g.drawString("180\u00ba",(int)(r.width* (0.5-0.43*(0.055))),(int)(r.width*(0.5+0.42*(-1.00)))); g.drawString("150\u00ba",(int)(r.width* (0.5+0.42*(0.4500))),(int)(r.width*(0.5+0.42*(-0.866)))); g.drawString("210\u00ba",(int)(r.width* (0.5-0.47*(0.550))),(int)(r.width*(0.5+0.42*(-0.866)))); g.drawString("120\u00ba",(int)(r.width* (0.5+0.42*(0.866))),(int)(r.width*(0.5+0.42*(-0.50)))); g.drawString("240\u00ba",(int)(r.width* (0.5-0.44*(1.0))),(int)(r.width*(0.5+0.42*(-0.50)))); g.drawString("90\u00ba",(int)(3+r.width* (0.5+0.42*(1.000))),(int)(r.width*(0.5+0.30*(0.05)))); g.drawString("270\u00ba",3+(int)(3+r.width* (0.5-0.46*(1.120))),(int)(r.width*(0.5+0.30*(0.05)))); g.drawString("60\u00ba",(int)(r.width*(0.5+0.43*(0.866))),(int)(r.width*(0.5+0.48*(0.50)))); g.drawString("300\u00ba",(int)(r.width* (0.5-0.44*(1.0))),(int)(r.width*(0.5+0.48*(0.50)))); g.drawString("30\u00ba",4+(int)(r.width*(0.5+0.42*(0.450))),(int)(r.width*(0.5+0.47*(0.866)))); g.drawString("330\u00ba",(int)(r.width*(0.5-0.47*(0.550))),(int)(r.width*(0.5+0.47*(0.866)))); g.drawString("0\u00ba",(int)(r.width*(0.5-0.2*(0.030))),(int)(r.width*(0.5+0.44*(1.05)))); } if(this.is_theta_plane==true){//This is the theta plane //draw two dipole antennae /* g.setColor(Color.red); g.drawLine((int)(r.width*(0.42)),(int)(r.width*(0.5-0.1)), (int)(r.width*(0.42)),(int)(r.width*(0.5-0.01))); g.drawLine((int)(r.width*(0.42)),(int)(r.width*(0.5+0.1)), (int)(r.width*(0.42)),(int)(r.width*(0.5+0.01))); g.setColor(Color.green); g.drawLine((int)(r.width*(0.58)),(int)(r.width*(0.5-0.1)), (int)(r.width*(0.58)),(int)(r.width*(0.5-0.01))); g.drawLine((int)(r.width*(0.58)),(int)(r.width*(0.5+0.1)), (int)(r.width*(0.58)),(int)(r.width*(0.5+0.01))); */ //draw angle label /*Image thetaimage; thetaimage=ant.getImage(ant.getDocumentBase(),"theta.gif"); g.drawImage(thetaimage,r.width-20,r.width-20,this); */ } else{//This is phi plane // Draw cross-section line g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON); g.setColor(Color.yellow); g.drawArc((int)(r.width/2.0*(1.0-0.82)),(int)(r.width/2.0*(1.0-0.82)),(int)(r.width*0.825),(int)(r.width*0.825),-90,(int)(ant.phicontrol.phi)); g.setColor(Color.black); g.drawArc((int)(r.width/2.0*(1.0-0.82))-1,(int)(r.width/2.0*(1.0-0.82))-1,(int)(r.width*0.825)+2,(int)(r.width*0.825)+2,-90,(int)(ant.phicontrol.phi)); //g.drawArc((int)(r.width*0.1),(int)(r.width*0.1),(int)(r.width*0.80),(int)(r.width*0.80), -90,(int)(ant.phicontrol.phi)); g.setColor(Color.yellow); g.drawLine((int)((r.width/2.0)*(1.0+0.82*Math.cos((ant.phicontrol.phi-90)*Math.PI/180.0))), (int)((r.width/2.0)*(1.0-0.82*Math.sin((ant.phicontrol.phi-90)*Math.PI/180.0))), (int)((r.width/2.0)*(1.0-0.8*Math.cos((ant.phicontrol.phi-90)*Math.PI/180.0))), (int)((r.width/2.0)*(1.0+0.8*Math.sin((ant.phicontrol.phi-90)*Math.PI/180.0)))); // Draw Antennas - view from top g.setColor(Color.red); g.fillOval( (int)(r.width*(0.34)-r.width*(0.00625)), (int)(r.width*(0.5)-r.width*(0.00625)), (int)(r.width*(0.025)), (int)(r.width*(0.025))); g.setColor(Color.black); g.drawOval( (int)(r.width*(0.34)-r.width*(0.00625)), (int)(r.width*(0.5)-r.width*(0.00625)), (int)(r.width*(0.025)), (int)(r.width*(0.025))); g.setColor(Color.green); g.fillOval( (int)(r.width*(0.66)-r.width*(0.00625)), (int)(r.width*(0.5)-r.width*(0.00625)), (int)(r.width*(0.025)), (int)(r.width*(0.025))); g.setColor(Color.black); g.drawOval( (int)(r.width*(0.66)-r.width*(0.00625)), (int)(r.width*(0.5)-r.width*(0.00625)), (int)(r.width*(0.025)), (int)(r.width*(0.025))); //Draw view-angle arrow //Draw view-angle arrow //g.setColor(Color.white); g.setColor(Color.black); g.drawLine((int)((r.width/2.0)*(1.0+0.63*Math.cos((ant.phicontrol.phi-180.0)*Math.PI/180.0))), (int)((r.width/2.0)*(1.0-0.63*Math.sin((ant.phicontrol.phi-180.0)*Math.PI/180.0))), (int)((r.width/2.0)*(1.0+0.815*Math.cos((ant.phicontrol.phi-180.0)*Math.PI/180.0))), (int)((r.width/2.0)*(1.0-0.815*Math.sin((ant.phicontrol.phi-180.0)*Math.PI/180.0))) ); g.setColor(Color.yellow); Polygon s = new Polygon(); s.addPoint((int)((r.width/2.0)*(1.0+0.63*Math.cos((ant.phicontrol.phi-180.0)*Math.PI/180.0))), (int)((r.width/2.0)*(1.0-0.63*Math.sin((ant.phicontrol.phi-180.0)*Math.PI/180.0)))); s.addPoint((int)((r.width/2.0)*(1.0+0.72*Math.cos((ant.phicontrol.phi-184.0)*Math.PI/180.0))), (int)((r.width/2.0)*(1.0-0.72*Math.sin((ant.phicontrol.phi-184.0)*Math.PI/180.0)))); s.addPoint((int)((r.width/2.0)*(1.0+0.72*Math.cos((ant.phicontrol.phi-176.0)*Math.PI/180.0))), (int)((r.width/2.0)*(1.0-0.72*Math.sin((ant.phicontrol.phi-176.0)*Math.PI/180.0)))); g.fillPolygon(s); g.setColor(Color.black); g.drawPolygon(s); } g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_OFF); //Now draw the radiation diagram g.setColor(Color.blue); //g.setColor(Color.black); if(this.is_theta_plane==true){ //draw two dipole antennae geom = (r.width*0.16*Math.cos((ant.phicontrol.phi-90.0)*Math.PI/180)); g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON); g.setColor(Color.red); g.drawLine((int)(r.width*(0.5)-geom+1),(int)(r.width*(0.5-0.1)), (int)(r.width*(0.5)-geom+1),(int)(r.width*(0.5-0.01))); g.drawLine((int)(r.width*(0.5)-geom+1),(int)(r.width*(0.5+0.1)), (int)(r.width*(0.5)-geom+1),(int)(r.width*(0.5+0.01))); g.drawLine((int)(r.width*(0.5)-geom),(int)(r.width*(0.5-0.1)), (int)(r.width*(0.5)-geom),(int)(r.width*(0.5-0.01))); g.drawLine((int)(r.width*(0.5)-geom),(int)(r.width*(0.5+0.1)), (int)(r.width*(0.5)-geom),(int)(r.width*(0.5+0.01))); g.drawLine((int)(r.width*(0.5)-geom-1),(int)(r.width*(0.5-0.1)), (int)(r.width*(0.5)-geom-1),(int)(r.width*(0.5-0.01))); g.drawLine((int)(r.width*(0.5)-geom-1),(int)(r.width*(0.5+0.1)), (int)(r.width*(0.5)-geom-1),(int)(r.width*(0.5+0.01))); g.setColor(Color.black); g.drawLine((int)(r.width*(0.5)-geom+1)+1,(int)(r.width*(0.5+0.1)), (int)(r.width*(0.5)-geom+1)+1,(int)(r.width*(0.5+0.01))); g.drawLine((int)(r.width*(0.5)-geom+1)+1,(int)(r.width*(0.5-0.1)), (int)(r.width*(0.5)-geom+1)+1,(int)(r.width*(0.5-0.01))); g.drawLine((int)(r.width*(0.5)-geom-1),(int)(r.width*(0.5+0.1)), (int)(r.width*(0.5)-geom+1),(int)(r.width*(0.5+0.1))); g.drawLine((int)(r.width*(0.5)-geom-1),(int)(r.width*(0.5-0.01)), (int)(r.width*(0.5)-geom+1),(int)(r.width*(0.5-0.01))); g.setColor(Color.green); g.drawLine((int)(r.width*(0.5)+geom+1),(int)(r.width*(0.5-0.1)), (int)(r.width*(0.5)+geom+1),(int)(r.width*(0.5-0.01))); g.drawLine((int)(r.width*(0.5)+geom+1),(int)(r.width*(0.5+0.1)), (int)(r.width*(0.5)+geom+1),(int)(r.width*(0.5+0.01))); g.drawLine((int)(r.width*(0.5)+geom),(int)(r.width*(0.5-0.1)), (int)(r.width*(0.5)+geom),(int)(r.width*(0.5-0.01))); g.drawLine((int)(r.width*(0.5)+geom),(int)(r.width*(0.5+0.1)), (int)(r.width*(0.5)+geom),(int)(r.width*(0.5+0.01))); g.drawLine((int)(r.width*(0.5)+geom-1),(int)(r.width*(0.5-0.1)), (int)(r.width*(0.5)+geom-1),(int)(r.width*(0.5-0.01))); g.drawLine((int)(r.width*(0.5)+geom-1),(int)(r.width*(0.5+0.1)), (int)(r.width*(0.5)+geom-1),(int)(r.width*(0.5+0.01))); g.setColor(Color.black); g.drawLine((int)(r.width*(0.5)+geom+1)+1,(int)(r.width*(0.5-0.1)), (int)(r.width*(0.5)+geom+1)+1,(int)(r.width*(0.5-0.01))); g.drawLine((int)(r.width*(0.5)+geom+1)+1,(int)(r.width*(0.5+0.1)), (int)(r.width*(0.5)+geom+1)+1,(int)(r.width*(0.5+0.01))); g.drawLine((int)(r.width*(0.5)+geom-1),(int)(r.width*(0.5+0.1)), (int)(r.width*(0.5)+geom+1)+1,(int)(r.width*(0.5+0.1))); g.drawLine((int)(r.width*(0.5)+geom-1),(int)(r.width*(0.5-0.01)), (int)(r.width*(0.5)+geom+1)+1,(int)(r.width*(0.5-0.01))); g.drawLine((int)(r.width*(0.5)-geom-1),(int)(r.width*(0.5-0.01)), (int)(r.width*(0.5)-geom+1),(int)(r.width*(0.5-0.01))); if((ant.phicontrol.phi<4) || (ant.phicontrol.phi>=268+90)){//&&ant.phicontrol.phi<=272){ g.setColor(Color.red); g.drawLine((int)(r.width*(0.5)-geom+1),(int)(r.width*(0.5-0.1)), (int)(r.width*(0.5)-geom+1),(int)(r.width*(0.5-0.01))); g.drawLine((int)(r.width*(0.5)-geom+1),(int)(r.width*(0.5+0.1)), (int)(r.width*(0.5)-geom+1),(int)(r.width*(0.5+0.01))); g.drawLine((int)(r.width*(0.5)-geom),(int)(r.width*(0.5-0.1)), (int)(r.width*(0.5)-geom),(int)(r.width*(0.5-0.01))); g.drawLine((int)(r.width*(0.5)-geom),(int)(r.width*(0.5+0.1)), (int)(r.width*(0.5)-geom),(int)(r.width*(0.5+0.01))); g.drawLine((int)(r.width*(0.5)-geom-1),(int)(r.width*(0.5-0.1)), (int)(r.width*(0.5)-geom-1),(int)(r.width*(0.5-0.01))); g.drawLine((int)(r.width*(0.5)-geom-1),(int)(r.width*(0.5+0.1)), (int)(r.width*(0.5)-geom-1),(int)(r.width*(0.5+0.01))); g.setColor(Color.black); g.drawLine((int)(r.width*(0.5)-geom+1)+1,(int)(r.width*(0.5+0.1)), (int)(r.width*(0.5)-geom+1)+1,(int)(r.width*(0.5+0.01))); g.drawLine((int)(r.width*(0.5)-geom+1)+1,(int)(r.width*(0.5-0.1)), (int)(r.width*(0.5)-geom+1)+1,(int)(r.width*(0.5-0.01))); g.drawLine((int)(r.width*(0.5)-geom-1),(int)(r.width*(0.5+0.1)), (int)(r.width*(0.5)-geom+1),(int)(r.width*(0.5+0.1))); // drawing of antennae finished } //Now draw radiation patterns g.setColor(Color.blue); //g.setColor(Color.black); g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON); if(ant.rcons.c1.getState()==true){ for(i=0;i<360;i++){ theta=(2.0*Math.PI*i/360.0f-Math.PI/2.0); g.drawLine( //(int)(r.width*(0.5+0.4*ant.efield[i].Magnitude()*Math.cos(theta))), //(int)(r.width*(0.5+0.4*ant.efield[i].Magnitude()*Math.sin(theta))), //(int)(r.width*(0.5+0.4*ant.efield[i+1].Magnitude()*Math.cos(theta))), //(int)(r.width*(0.5+0.4*ant.efield[i+1].Magnitude()*Math.sin(theta)))); (int)(r.width*(0.5+0.4*ant.efield_mag[i]*Math.cos(theta))), (int)(r.width*(0.5+0.4*ant.efield_mag[i]*Math.sin(theta))), (int)(r.width*(0.5+0.4*ant.efield_mag[i+1]*Math.cos(theta))), (int)(r.width*(0.5+0.4*ant.efield_mag[i+1]*Math.sin(theta)))); } } if(ant.rcons.c3.getState()==true){ for(i=0;i<360;i++){ theta=(2.0*Math.PI*i/360.0f-Math.PI/2.0); g.drawLine( (int)(r.width*(0.5+0.4*ant.power[i]*Math.cos(theta))), (int)(r.width*(0.5+0.4*ant.power[i]*Math.sin(theta))), (int)(r.width*(0.5+0.4*ant.power[i+1]*Math.cos(theta))), (int)(r.width*(0.5+0.4*ant.power[i+1]*Math.sin(theta)))); } } g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_OFF); } else{ g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON); if(ant.rcons.c1.getState()==true){ for(i=0;i<360;i++){ phi=(2.0*Math.PI*i/360.0f); g.drawLine( //(int)(r.width*(0.5+0.4*ant.eefield[i].Magnitude()*Math.cos(phi))), //(int)(r.width*(0.5+0.4*ant.eefield[i].Magnitude()*Math.sin(phi))), //(int)(r.width*(0.5+0.4*ant.eefield[i+1].Magnitude()*Math.cos(phi))), //(int)(r.width*(0.5+0.4*ant.eefield[i+1].Magnitude()*Math.sin(phi)))); (int)(r.width*(0.5+0.4*ant.eefield_mag[i]*Math.cos(phi))), (int)(r.width*(0.5+0.4*ant.eefield_mag[i]*Math.sin(phi))), (int)(r.width*(0.5+0.4*ant.eefield_mag[i+1]*Math.cos(phi))), (int)(r.width*(0.5+0.4*ant.eefield_mag[i+1]*Math.sin(phi)))); } } if(ant.rcons.c3.getState()==true){ for(i=0;i<360;i++){ phi=(2.0*Math.PI*i/360.0f); g.drawLine( (int)(r.width*(0.5+0.4*ant.ppower[i]*Math.cos(phi))), (int)(r.width*(0.5+0.4*ant.ppower[i]*Math.sin(phi))), (int)(r.width*(0.5+0.4*ant.ppower[i+1]*Math.cos(phi))), (int)(r.width*(0.5+0.4*ant.ppower[i+1]*Math.sin(phi)))); } } g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_OFF); } } 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); //drawCanvas(g); } //Addition to reduce flicker new routine public void update(Graphics g){ // added to avoid clearing paint(g); } public void redraw(){ repaint(); } }//End of RadarCanvas