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Architecture: [ linux ]
Version: [ head ] [ nightly ] [ GaudiDev ]
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001 package atlantis.geometry;
002 
003 import atlantis.graphics.ACoord;
004 
005 
006 /**
007  * Special t shape Box used for MDT chambers near the feet.
008  * These are only different in th FZ projection
009  */
010 
011 import atlantis.utils.AMath;
012 
013 
014 public class ATBxDetector extends ABoxDetector {
015 
016   double zis;
017   double zos;
018   double ws;
019   double or;
020 
021   public ATBxDetector(String name, double zMin, double zMax, double rMin,
022       double rMax, double phi, double excl, double size, double zis, double zos,
023       double ws, double or, int etaIndex, int phiIndex) {
024     super(name, zMin, zMax, rMin, rMax, phi, excl, size, etaIndex, phiIndex);
025     this.zis=zis;
026     this.zos=zos;
027     this.ws=ws;
028     this.or=or;
029   }
030 
031   protected ACoord getFZUser() {
032     double[][] hv=new double[2][8];
033     double cosPhi=Math.cos(phi);
034     double sinPhi=Math.sin(phi);
035     double d=size/2.;
036     double r=rMin;
037     double x=r*cosPhi-excl*sinPhi;
038     double y=r*sinPhi+excl*cosPhi;
039     double dsinPhi=d*sinPhi;
040     double dcosPhi=d*cosPhi;
041     double phi1=Math.atan2(y-dcosPhi, x+dsinPhi)*AMath.RADIANS_TO_DEGREES;
042     double phi2=Math.atan2(y+dcosPhi, x-dsinPhi)*AMath.RADIANS_TO_DEGREES;
043 
044     if(phi1<0.) phi1+=360.;
045     if(phi2<0.) phi2+=360.;
046     if(phi1-phi2>180.)  phi1-=360.;
047     if(phi2-phi1>180.)  phi2-=360.;
048     double phiLower=Math.min(phi1, phi2);
049     double phiUpper=Math.max(phi1, phi2);
050     double phiMid=phiLower+ws/size*(phiUpper-phiLower);
051     hv[0][0]=zMin;
052     hv[0][1]=zMin;
053     hv[0][2]=zis;
054     hv[0][3]=zis;
055     hv[0][4]=zos;
056     hv[0][5]=zos;
057     hv[0][6]=zMax;
058     hv[0][7]=zMax;
059     if(or>90.) {
060       phiMid=phiLower+ws/size*(phiUpper-phiLower);
061       hv[1][0]=phiUpper;
062       hv[1][1]=phiMid;
063       hv[1][2]=phiMid;
064       hv[1][3]=phiLower;
065       hv[1][4]=phiLower;
066       hv[1][5]=phiMid;
067       hv[1][6]=phiMid;
068       hv[1][7]=phiUpper;
069     } else {
070       phiMid=phiUpper-ws/size*(phiUpper-phiLower);
071       hv[1][0]=phiLower;
072       hv[1][1]=phiMid;
073       hv[1][2]=phiMid;
074       hv[1][3]=phiUpper;
075       hv[1][4]=phiUpper;
076       hv[1][5]=phiMid;
077       hv[1][6]=phiMid;
078       hv[1][7]=phiLower;
079     }
080 
081     return new ACoord(hv);
082   }
083 
084 }
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