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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 25 | f9daq | 1 | #include "include/guide.h" |
| 2 | |||
| 3 | #include <iostream> |
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| 4 | |||
| 5 | |||
| 6 | // vector output shortcut |
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| 7 | void printv(TVector3 v) |
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| 8 | { |
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| 9 | printf("(x,y,z) = (%.4lf, %.4lf, %.4lf)\n", v.x(), v.y(), v.z()); |
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| 10 | } |
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| 11 | // TVector3::Rotate does not seem accurate enough |
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| 12 | TVector3 rotatey(TVector3 v, double theta) |
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| 13 | { |
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| 14 | return TVector3(v.x() * TMath::Cos(theta) + v.z() * TMath::Sin(theta), |
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| 15 | v.y(), |
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| 16 | -v.x() * TMath::Sin(theta) + v.z() * TMath::Cos(theta)); |
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| 17 | } |
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| 18 | // another shortcut not found in TMath |
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| 19 | int sign(double in) |
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| 20 | { |
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| 21 | if(in >= 0.0) return 1; |
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| 22 | else return -1; |
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| 23 | } |
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| 24 | //================================================================================= |
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| 25 | |||
| 26 | //----------------------------------------------------------------------------- |
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| 27 | void CRay::Set(TVector3 r0, TVector3 n0) |
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| 28 | { |
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| 29 | r = r0; n = n0.Unit(); |
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| 30 | } |
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| 31 | //----------------------------------------------------------------------------- |
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| 32 | //void CRay::Set(double x0, double y0, double z0, double l0, double m0, double n0) |
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| 33 | //{ |
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| 34 | //r.SetXYZ(x0, y0, z0); |
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| 35 | //n.SetXYZ(l0, m0, n0); n = n.Unit(); |
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| 36 | //} |
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| 37 | //----------------------------------------------------------------------------- |
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| 38 | /* |
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| 39 | CRay& CRay::operator = (const CRay& p) |
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| 40 | { |
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| 41 | r.SetXYZ(p.GetR().x(), p.GetR().y(), p.GetR().z()); |
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| 42 | //this->r.SetXYZ(p.x(), p.y(), p.z()); |
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| 43 | n.SetXYZ(p.GetN().x(), p.GetN().y(), p.GetN().z()); |
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| 44 | return *this; |
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| 45 | } */ |
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| 46 | //----------------------------------------------------------------------------- |
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| 47 | void CRay::Print() |
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| 48 | { |
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| 49 | printf("---> CRay::Print() <---\n"); |
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| 50 | printf("(x,y,z)=(%.2lf, %.2lf, %.2lf); (l,m,n)=(%.2lf, %.2lf, %.2lf)\n", |
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| 51 | r.x(), r.y(), r.z(), n.x(), n.y(), n.z()); |
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| 52 | } |
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| 53 | //----------------------------------------------------------------------------- |
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| 54 | void CRay::Draw() |
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| 55 | { |
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| 56 | double t = 50.0; |
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| 57 | TPolyLine3D *line3d = new TPolyLine3D(2); |
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| 58 | //line3d->SetPoint(0, r.x() - t*n.x(), r.y() - t*n.y(), r.z() - t*n.z()); |
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| 59 | line3d->SetPoint(0, r.x(), r.y(), r.z()); |
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| 60 | line3d->SetPoint(1, r.x() + t*n.x(), r.y() + t*n.y(), r.z() + t*n.z()); |
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| 61 | line3d->SetLineWidth(1); |
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| 62 | line3d->SetLineColor(color); |
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| 63 | |||
| 64 | line3d->Draw(); |
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| 65 | } |
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| 66 | //----------------------------------------------------------------------------- |
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| 67 | void CRay::Draw(double x_from, double x_to) |
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| 68 | { |
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| 69 | double A1, A2; |
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| 70 | TPolyLine3D *line3d = new TPolyLine3D(2); |
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| 71 | |||
| 72 | if(n.x() < MARGIN) { |
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| 73 | A1 = A2 = 0.0; |
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| 74 | } else { |
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| 75 | A1 = (x_from - r.x())/n.x(); |
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| 76 | A2 = (x_to - r.x())/n.x(); |
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| 77 | } |
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| 78 | |||
| 79 | line3d->SetPoint(0, x_from, A1*n.y()+r.y(), A1*n.z()+r.z()); |
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| 80 | line3d->SetPoint(1, x_to, A2*n.y()+r.y(), A2*n.z()+r.z()); |
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| 81 | line3d->SetLineWidth(1); |
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| 82 | line3d->SetLineColor(color); |
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| 83 | |||
| 84 | line3d->Draw(); |
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| 85 | } |
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| 86 | //----------------------------------------------------------------------------- |
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| 87 | void CRay::DrawS(double x_from, double t) |
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| 88 | { |
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| 89 | double A1; |
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| 90 | TPolyLine3D *line3d = new TPolyLine3D(2); |
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| 91 | |||
| 92 | if(n.x() < MARGIN) |
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| 93 | A1 = 0.0; |
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| 94 | else |
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| 95 | A1 = (x_from - r.x())/n.x(); |
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| 96 | |||
| 97 | line3d->SetPoint(0, x_from, A1*n.y()+r.y(), A1*n.z()+r.z()); |
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| 98 | line3d->SetPoint(1, r.x() + t*n.x(), r.y() + t*n.y(), r.z() + t*n.z()); |
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| 99 | line3d->SetLineWidth(1); |
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| 100 | line3d->SetLineColor(color); |
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| 101 | |||
| 102 | line3d->Draw(); |
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| 103 | } |
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| 104 | //================================================================================= |
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| 105 | |||
| 106 | |||
| 107 | //================================================================================= |
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| 108 | CPlane4::CPlane4() : |
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| 109 | n(TVector3(1.0, 0.0, 0.0)), |
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| 110 | A(0), |
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| 111 | B(0), |
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| 112 | C(0), |
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| 113 | D(0) |
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| 114 | { r[0] = TVector3(0.0,-1.0,-1.0); |
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| 115 | r[1] = TVector3(0.0,-1.0, 1.0); |
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| 116 | r[2] = TVector3(0.0, 1.0, 1.0); |
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| 117 | r[3] = TVector3(0.0, 1.0,-1.0); |
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| 118 | for(int i=0;i<4;i++) edge[i] = TVector3(0,0,0); |
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| 119 | for(int i=0;i<4;i++) angle_r[i] = 0; |
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| 120 | }; |
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| 121 | //----------------------------------------------------------------------------- |
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| 122 | CPlane4::CPlane4(TVector3 r1, TVector3 r2, TVector3 r3, TVector3 r4) |
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| 123 | { |
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| 124 | //Set(r1, r2, r3, r4); |
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| 125 | //} |
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| 126 | //----------------------------------------------------------------------------- |
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| 127 | // za izracun parametrov ravnine je en vektor prevec, vendar tega |
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| 128 | // rabim kot zadnji vogal poligona |
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| 129 | //void CPlane4::Set(TVector3 r1, TVector3 r2, TVector3 r3, TVector3 r4) |
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| 130 | //{ |
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| 131 | double x1,y1,z1, x2,y2,z2, x3,y3,z3; |
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| 132 | |||
| 133 | x1 = r1.x(); y1 = r1.y(); z1 = r1.z(); |
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| 134 | x2 = r2.x(); y2 = r2.y(); z2 = r2.z(); |
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| 135 | x3 = r3.x(); y3 = r3.y(); z3 = r3.z(); |
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| 136 | |||
| 137 | A = y3*(z1 - z2) + y1*(z2 - z3) + y2*(z3 - z1); |
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| 138 | B = x3*(z2 - z1) + x1*(z3 - z2) + x2*(z1 - z3); |
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| 139 | C = x3*(y1 - y2) + x1*(y2 - y3) + x2*(y3 - y1); |
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| 140 | D = y3*(x1*z2 - x2*z1) + x3*(y2*z1 - y1*z2) + z3*(x2*y1 - x1*y2); |
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| 141 | |||
| 142 | r[0] = r1; r[1] = r2; r[2] = r3; r[3] = r4; |
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| 143 | n.SetXYZ(A, B, C); |
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| 144 | n = n.Unit(); |
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| 145 | |||
| 146 | for(int i=0;i<4;i++) |
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| 147 | edge[i] = r[i-3 ? i+1 : 0] - r[i]; |
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| 148 | |||
| 149 | for(int i=0;i<4;i++) |
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| 150 | angle_r[i] = TMath::ACos(/*TMath::Abs*/( ((-edge[i ? i-1 : 3]).Unit()) * (edge[i].Unit()) )); |
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| 151 | }; |
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| 152 | |||
| 153 | void CPlane4::Set(TVector3 r1, TVector3 r2, TVector3 r3, TVector3 r4) |
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| 154 | { |
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| 155 | double x1,y1,z1, x2,y2,z2, x3,y3,z3; |
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| 156 | |||
| 157 | x1 = r1.x(); y1 = r1.y(); z1 = r1.z(); |
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| 158 | x2 = r2.x(); y2 = r2.y(); z2 = r2.z(); |
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| 159 | x3 = r3.x(); y3 = r3.y(); z3 = r3.z(); |
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| 160 | |||
| 161 | A = y3*(z1 - z2) + y1*(z2 - z3) + y2*(z3 - z1); |
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| 162 | B = x3*(z2 - z1) + x1*(z3 - z2) + x2*(z1 - z3); |
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| 163 | C = x3*(y1 - y2) + x1*(y2 - y3) + x2*(y3 - y1); |
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| 164 | D = y3*(x1*z2 - x2*z1) + x3*(y2*z1 - y1*z2) + z3*(x2*y1 - x1*y2); |
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| 165 | |||
| 166 | r[0] = r1; r[1] = r2; r[2] = r3; r[3] = r4; |
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| 167 | n.SetXYZ(A, B, C); |
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| 168 | n = n.Unit(); |
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| 169 | |||
| 170 | for(int i=0;i<4;i++) |
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| 171 | edge[i] = r[i-3 ? i+1 : 0] - r[i]; |
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| 172 | |||
| 173 | for(int i=0;i<4;i++) |
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| 174 | angle_r[i] = TMath::ACos(/*TMath::Abs*/( ((-edge[i ? i-1 : 3]).Unit()) * (edge[i].Unit()) )); |
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| 175 | }; |
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| 176 | |||
| 177 | CPlane4::CPlane4(TVector3 *vr) |
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| 178 | { |
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| 179 | double x1,y1,z1, x2,y2,z2, x3,y3,z3; |
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| 180 | |||
| 181 | x1 = vr[0].x(); y1 = vr[0].y(); z1 = vr[0].z(); |
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| 182 | x2 = vr[1].x(); y2 = vr[1].y(); z2 = vr[1].z(); |
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| 183 | x3 = vr[2].x(); y3 = vr[2].y(); z3 = vr[2].z(); |
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| 184 | |||
| 185 | A = y3*(z1 - z2) + y1*(z2 - z3) + y2*(z3 - z1); |
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| 186 | B = x3*(z2 - z1) + x1*(z3 - z2) + x2*(z1 - z3); |
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| 187 | C = x3*(y1 - y2) + x1*(y2 - y3) + x2*(y3 - y1); |
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| 188 | D = y3*(x1*z2 - x2*z1) + x3*(y2*z1 - y1*z2) + z3*(x2*y1 - x1*y2); |
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| 189 | |||
| 190 | r[0] = vr[0]; r[1] = vr[1]; r[2] = vr[2]; r[3] = vr[3]; |
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| 191 | n.SetXYZ(A, B, C); |
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| 192 | n = n.Unit(); |
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| 193 | |||
| 194 | for(int i=0;i<4;i++) |
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| 195 | edge[i] = r[i-3 ? i+1 : 0] - r[i]; |
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| 196 | |||
| 197 | for(int i=0;i<4;i++) |
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| 198 | angle_r[i] = TMath::ACos(/*TMath::Abs*/( ((-edge[i ? i-1 : 3]).Unit()) * (edge[i].Unit()) )); |
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| 199 | }; |
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| 200 | //----------------------------------------------------------------------------- |
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| 201 | // posce presecisce !neskoncne! ravnine s premico (class CRay) |
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| 202 | // ce najde presecisce vrne 1 |
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| 203 | int CPlane4::GetIntersection(TVector3 *vec, CRay ray) |
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| 204 | { |
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| 205 | TVector3 N; //nenormirani vektor (A,B,C) |
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| 206 | double num, den; //stevec, imenovalec |
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| 207 | double t; |
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| 208 | TVector3 tmp; |
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| 209 | |||
| 210 | N.SetXYZ(A,B,C); |
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| 211 | |||
| 212 | num = N*ray.GetR() + D; |
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| 213 | den = N*ray.GetN(); |
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| 214 | |||
| 215 | if (dbg) printf("t = %6.3lf / %6.3lf = %6.3lf\n", num, den, num/den); |
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| 216 | |||
| 217 | //if(den == 0) |
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| 218 | if(TMath::Abs(den) < MARGIN) { |
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| 219 | //if(num == 0) |
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| 220 | if(TMath::Abs(num) < MARGIN) { |
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| 221 | if (dbg) printf("The ray is on the surface!\n"); |
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| 222 | return 0; //return 2; // premica lezi na ravnini |
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| 223 | } |
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| 224 | else { |
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| 225 | if (dbg) printf("The ray is parallel to the surface!\n"); |
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| 226 | return 0; // ni presecisca |
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| 227 | } |
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| 228 | } |
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| 229 | |||
| 230 | t = num / den; |
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| 231 | |||
| 232 | tmp = ray.GetR(); |
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| 233 | tmp -= t*ray.GetN(); |
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| 234 | *vec = tmp; |
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| 235 | return 1; |
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| 236 | } |
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| 237 | //----------------------------------------------------------------------------- |
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| 238 | // ali je vektor vec, ki lezi na ravnini skupaj z e1 in e2, med njima |
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| 239 | // angle_r je kot med e1 in e2, vsi vektorji imajo skupno izhodisce |
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| 240 | int CPlane4::IsInTri(TVector3 vec, TVector3 e1, TVector3 e2, double angle) |
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| 241 | { |
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| 242 | double angle_ve1, angle_ve2; |
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| 243 | |||
| 244 | if(dbg) printf("--- CPlane4::IsInTri ---\n"); |
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| 245 | |||
| 246 | angle_ve1 = TMath::ACos(/*TMath::Abs*/( (e1.Unit()) * (vec.Unit()) )); |
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| 247 | angle_ve2 = TMath::ACos(/*TMath::Abs*/( (e2.Unit()) * (vec.Unit()) )); |
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| 248 | |||
| 249 | if(dbg) |
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| 250 | { |
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| 251 | //printf("angle_ve1 = %lf\n", angle_ve1*DEGREE); |
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| 252 | //printf("angle_ve2 = %lf\n", angle_ve2*DEGREE); |
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| 253 | //printf("angle_sum = %lf\n", (angle_ve1 + angle_ve2)*DEGREE); |
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| 254 | printf(" angle_r = %lf\n", angle*DEGREE); |
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| 255 | } |
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| 256 | |||
| 257 | bool difference = (MARGIN < TMath::Abs(angle - (angle_ve1 + angle_ve2))); |
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| 258 | if (dbg) printf(" MARGIN < Difference = %d\n", difference); |
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| 259 | return (int) !difference; |
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| 260 | } |
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| 261 | //----------------------------------------------------------------------------- |
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| 262 | // ali je vektor vec, ki lezi na ravnini!, znotraj meja, ki jih definirajo |
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| 263 | // strije vogali te ravnine r[i] |
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| 264 | int CPlane4::IsVectorIn(TVector3 vec) |
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| 265 | { |
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| 266 | int status; |
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| 267 | |||
| 268 | if(dbg) printf("--- CPlane4::IsVectorIn ---\n"); |
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| 269 | |||
| 270 | for(int i=0;i<3;i++) |
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| 271 | { |
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| 272 | status = IsInTri(vec - r[i], edge[i], -edge[i ? i-1 : 3], angle_r[i]); |
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| 273 | if(dbg) printf(" [%d] vec is %s\n", i, status ? "inside" : "outside"); |
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| 274 | if(!status) return 0; |
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| 275 | } |
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| 276 | |||
| 277 | return 1; |
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| 278 | } |
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| 279 | //----------------------------------------------------------------------------- |
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| 280 | int CPlane4::TestIntersection(CRay in) |
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| 281 | { |
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| 282 | TVector3 tmp; |
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| 283 | |||
| 284 | if( GetIntersection(&tmp, in) ) |
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| 285 | if( IsVectorIn(tmp) ) |
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| 286 | return 1; |
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| 287 | |||
| 288 | return 0; |
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| 289 | } |
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| 290 | //----------------------------------------------------------------------------- |
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| 291 | int CPlane4::TestIntersection(TVector3 *vec, CRay in) |
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| 292 | { |
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| 293 | TVector3 tmp; |
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| 294 | |||
| 295 | if( GetIntersection(&tmp, in) ) |
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| 296 | if( IsVectorIn(tmp) ) { |
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| 297 | *vec = tmp; |
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| 298 | return 1; |
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| 299 | } |
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| 300 | |||
| 301 | return 0; |
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| 302 | } |
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| 303 | //----------------------------------------------------------------------------- |
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| 304 | void CPlane4::Print() |
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| 305 | { |
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| 306 | printf("--- CPlane4::Print() ---\n"); |
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| 307 | printf(" r=(%.2lf, %.2lf, %.2lf); n=(%.2lf, %.2lf, %.2lf); ", |
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| 308 | r[0].x(), r[0].y(), r[0].z(), n.x(), n.y(), n.z()); |
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| 309 | printf( "(A,B,C,D)=(%.2lf, %.2lf, %.2lf, %.2lf) \n", A, B, C, D); |
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| 310 | for(int i=0;i<4;i++) printf(" edge[%d] = (%lf, %lf, %lf)\n", i, edge[i].x(), edge[i].y(), edge[i].z()); |
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| 311 | for(int i=0;i<4;i++) printf(" angle[%d] = %lf\n", i, angle_r[i]*DEGREE); |
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| 312 | } |
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| 313 | //----------------------------------------------------------------------------- |
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| 314 | void CPlane4::Draw(int color, int width) |
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| 315 | { |
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| 316 | TPolyLine3D *line3d = new TPolyLine3D(5); |
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| 317 | |||
| 318 | for(int i=0;i<4;i++) line3d->SetPoint(i, r[i].x(), r[i].y(), r[i].z()); |
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| 319 | line3d->SetPoint(4, r[0].x(), r[0].y(), r[0].z()); |
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| 320 | line3d->SetLineWidth(width); line3d->SetLineColor(color); |
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| 321 | |||
| 322 | line3d->Draw(); |
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| 323 | } |
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| 324 | //================================================================================= |
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| 325 | |||
| 326 | |||
| 327 | //================================================================================= |
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| 328 | CSurface::CSurface(int type0): |
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| 329 | type(type0) |
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| 330 | { |
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| 331 | TVector3 vr[4]; |
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| 332 | TDatime now; |
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| 333 | |||
| 334 | vr[0].SetXYZ(0.0,-1.0,-1.0); |
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| 335 | vr[1].SetXYZ(0.0,-1.0, 1.0); |
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| 336 | vr[2].SetXYZ(0.0, 1.0, 1.0); |
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| 337 | vr[3].SetXYZ(0.0, 1.0,-1.0); |
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| 338 | //CPlane4::Set(vr); |
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| 339 | SetIndex(1.0, 1.5); |
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| 340 | |||
| 341 | reflection = c_reflectivity; |
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| 342 | rand.SetSeed(now.Get()); |
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| 343 | |||
| 344 | SetFresnel(); |
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| 345 | } |
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| 346 | //----------------------------------------------------------------------------- |
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| 347 | CSurface::CSurface(int type0, TVector3 r1, TVector3 r2, TVector3 r3, TVector3 r4, double n10, double n20, double reflectivity) |
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| 348 | { |
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| 349 | TDatime now; |
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| 350 | |||
| 351 | type = type0; CPlane4::Set(r1, r2, r3, r4); |
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| 352 | SetIndex(n10, n20); |
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| 353 | |||
| 354 | reflection = reflectivity; |
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| 355 | rand.SetSeed(now.Get()); |
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| 356 | |||
| 357 | SetFresnel(); |
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| 358 | } |
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| 359 | //----------------------------------------------------------------------------- |
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| 360 | CSurface::CSurface(int type0, TVector3 *vr, double n10, double n20, double reflectivity) |
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| 361 | { |
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| 362 | TDatime now; |
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| 363 | |||
| 364 | type = type0; CPlane4::Set(vr); |
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| 365 | SetIndex(n10, n20); |
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| 366 | |||
| 367 | reflection = reflectivity; |
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| 368 | rand.SetSeed(now.Get()); |
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| 369 | |||
| 370 | SetFresnel(); |
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| 371 | } |
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| 372 | //----------------------------------------------------------------------------- |
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| 373 | void CSurface::SetIndex(double n10, double n20) |
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| 374 | { |
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| 375 | n1 = n10; n2 = n20; n1_n2 = n1/n2; |
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| 376 | |||
| 377 | if(n1 > n2) |
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| 378 | cosTtotal = TMath::Sqrt( 1 - TMath::Power(n2/n1, 2) ); |
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| 379 | else |
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| 380 | cosTtotal = 0.0; |
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| 381 | } |
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| 382 | //----------------------------------------------------------------------------- |
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| 383 | // sprejme zarek, vrne uklonjen/odbit zarek in presecisce |
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| 384 | // vrne 0 ce ni presecisca; 1 ce se je lomil |
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| 385 | // 2 ce se je odbil; -2 ce se je absorbiral |
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| 386 | int CSurface::PropagateRay(CRay in, CRay *out, TVector3 *intersection) |
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| 387 | { |
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| 388 | if (dbg) printf("--- CSurface::PropagateRay ---\n"); |
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| 389 | double cosTi, cosTt, p_ref; |
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| 390 | TVector3 intersect, transmit; |
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| 391 | |||
| 392 | if( !(GetIntersection(&intersect, in) == 1) ) |
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| 393 | return 0; |
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| 394 | |||
| 395 | *intersection = intersect; |
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| 396 | if( !IsVectorIn(intersect) ) |
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| 397 | return 0; |
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| 398 | |||
| 399 | // --------------- Fresnel ---------------------------------------------------- |
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| 400 | // R_f = a_te * R_te + a_tm * R_tm |
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| 401 | double r_te=0; |
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| 402 | double r_tm=0; |
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| 403 | double R_te=0; |
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| 404 | double R_tm=0; |
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| 405 | double R_f = 0.0; |
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| 406 | double a_te = 0.0; |
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| 407 | double a_tm = 0.0; |
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| 408 | TVector3 v_te; // polarization perpendicular to the plane of incidence |
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| 409 | TVector3 v_tm; // inbound polarization parallel with the plane of incidence |
||
| 410 | TVector3 v_tm_t;// transmited polarization parallel with the plane of incidence |
||
| 411 | TVector3 pol_t = in.GetP(); // transmited polarization |
||
| 412 | int sign_n; // sign of normal direction vs. inbound ray |
||
| 413 | double cosTN; // debug |
||
| 414 | |||
| 415 | if(fresnel) { |
||
| 416 | v_te = n.Cross(in.GetN()); v_te = v_te.Unit(); |
||
| 417 | v_tm = -v_te.Cross(in.GetN()); v_tm = v_tm.Unit(); |
||
| 418 | if(dbg) { |
||
| 419 | printf(" v_te = "); printv(v_te); |
||
| 420 | printf(" v_tm = "); printv(v_tm); |
||
| 421 | } |
||
| 422 | |||
| 423 | double cosAf = v_te * in.GetP(); |
||
| 424 | if(dbg) printf(" cosAf = %lf (Af = %lf)\n", cosAf, TMath::ACos(cosAf)*DEGREE); |
||
| 425 | |||
| 426 | a_te = cosAf; |
||
| 427 | a_tm = TMath::Sqrt(1 - cosAf*cosAf); |
||
| 428 | if(dbg) printf(" a_te = %lf, a_tm = %lf\n", a_te, a_tm); |
||
| 429 | } |
||
| 430 | // ---------------------------------------------------------------------------- |
||
| 431 | |||
| 432 | if(type == 3) type = SURF_REFRA; //SURF_TOTAL -> SURF_REFRA |
||
| 433 | switch(type){ |
||
| 434 | // ---------------------------------------------------------------------------- |
||
| 435 | // --------------- refraction from n1 to n2 ----------------------------------- |
||
| 436 | // ---------------------------------------------------------------------------- |
||
| 437 | case SURF_REFRA: |
||
| 438 | cosTi = in.GetN() * n; |
||
| 439 | if(dbg) printf(" cosTi = %lf (Ti = %lf)\n", cosTi, TMath::ACos(cosTi)*DEGREE); |
||
| 440 | sign_n = -sign(cosTi); |
||
| 441 | if(dbg) printf(" sign_n = %d\n", sign_n); |
||
| 442 | cosTi = TMath::Abs(cosTi); |
||
| 443 | |||
| 444 | // Check if there can be total reflection: n1 > n2 |
||
| 445 | if(N1_N2(-sign_n) < 1.0) |
||
| 446 | cosTtotal = TMath::Sqrt( 1 - TMath::Power(N1_N2(-sign_n), 2) ); |
||
| 447 | else |
||
| 448 | cosTtotal = 0.0; |
||
| 449 | |||
| 450 | if(dbg) printf(" cosTtotal = %lf (Ttotal = %lf)\n", cosTtotal, TMath::ACos(cosTtotal)*DEGREE); |
||
| 451 | |||
| 452 | p_ref = rand.Uniform(0.0, 1.0); |
||
| 453 | |||
| 454 | if( (cosTi <= cosTtotal) && (p_ref < reflection) ) { // totalni odboj z verjetnostjo "reflection" |
||
| 455 | if(dbg) printf(" TOTAL\n"); |
||
| 456 | transmit = in.GetN() + sign_n*2*cosTi*n; |
||
| 457 | |||
| 458 | if(dbg) { |
||
| 459 | cosTN = TMath::Abs(transmit.Unit() * n); |
||
| 460 | printf(" cosTN = %lf (TN = %lf) (Abs(TN) = %lf)\n", cosTN, TMath::ACos(cosTN)*DEGREE, TMath::ACos(TMath::Abs(cosTN))*DEGREE); |
||
| 461 | } |
||
| 462 | out->Set(intersect, transmit); |
||
| 463 | |||
| 464 | pol_t = -in.GetP() + sign_n*2*cosTi*n; |
||
| 465 | out->SetPolarization(pol_t); |
||
| 466 | return 2; |
||
| 467 | } else { // ni tot. odboja |
||
| 468 | if(dbg) printf(" REFRACTION\n"); |
||
| 469 | if(dbg) printf(" N1_N2(sign_n) = %lf\n", N1_N2(sign_n)); |
||
| 470 | cosTt = TMath::Sqrt(1 - TMath::Power(N1_N2(sign_n), 2)*(1 - TMath::Power(cosTi, 2))); |
||
| 471 | if(dbg) printf(" cosTt = %lf (Tt = %lf) \n", cosTt, TMath::ACos(cosTt)*DEGREE); |
||
| 472 | |||
| 473 | transmit = N1_N2(sign_n)*in.GetN() + sign_n*(N1_N2(sign_n)*cosTi - cosTt)*n; |
||
| 474 | if(dbg) {printf(" transmit.Unit() = "); printv(transmit.Unit());} |
||
| 475 | |||
| 476 | if(dbg) { |
||
| 477 | cosTN = transmit.Unit() * n; |
||
| 478 | printf(" cosTN = %lf (TN = %lf) (Abs(TN) = %lf)\n", cosTN, TMath::ACos(cosTN)*DEGREE, TMath::ACos(TMath::Abs(cosTN))*DEGREE); |
||
| 479 | } |
||
| 480 | //if(cosTi<=cosTtotal) cosTt = TMath::Sqrt(1 - TMath::Power(N1_N2(sign_n), 2)*(1 - TMath::Power(cosTi, 2))); |
||
| 481 | if(fresnel) { |
||
| 482 | r_te = (n1*cosTi - n2*cosTt)/(n1*cosTi + n2*cosTt); // transverse |
||
| 483 | r_tm = (n2*cosTi - n1*cosTt)/(n1*cosTt + n2*cosTi); // paralel |
||
| 484 | |||
| 485 | if(dbg) printf(" r_te = %lf, r_tm = %lf\n", r_te, r_tm); |
||
| 486 | |||
| 487 | v_tm_t = -v_te.Cross(transmit); |
||
| 488 | v_tm_t = v_tm_t.Unit(); |
||
| 489 | pol_t = a_te * (1.0 - TMath::Abs(r_te)) * v_te + a_tm * (1.0 - TMath::Abs(r_tm)) * v_tm_t; |
||
| 490 | |||
| 491 | if(dbg) { |
||
| 492 | printf(" v_tm_t = "); printv(v_tm_t); |
||
| 493 | printf(" pol_t = "); printv(pol_t); |
||
| 494 | } |
||
| 495 | |||
| 496 | R_te = TMath::Power(r_te, 2); |
||
| 497 | R_tm = TMath::Power(r_tm, 2); |
||
| 498 | R_f = a_te*a_te*R_te + a_tm*a_tm*R_tm; |
||
| 499 | |||
| 500 | if(dbg) printf(" R_te = %lf, R_tm = %lf, R_f = %lf\n", R_te, R_tm, R_f); |
||
| 501 | } |
||
| 502 | |||
| 503 | //p_ref = rand.Uniform(0.0, 1.0); |
||
| 504 | if(p_ref >= R_f) { // se lomi |
||
| 505 | out->Set(intersect, transmit); |
||
| 506 | out->SetPolarization(pol_t); |
||
| 507 | return 1; |
||
| 508 | } else { // se odbije |
||
| 509 | transmit = in.GetN() + sign_n*2*cosTi*n; |
||
| 510 | out->Set(intersect, transmit); |
||
| 511 | pol_t = -in.GetP() + sign_n*2*cosTi*n; |
||
| 512 | out->SetPolarization(pol_t); |
||
| 513 | return 2; |
||
| 514 | } |
||
| 515 | } |
||
| 516 | break; |
||
| 517 | // ---------------------------------------------------------------------------- |
||
| 518 | // --------------- reflection at "reflection" probability --------------------- |
||
| 519 | // ---------------------------------------------------------------------------- |
||
| 520 | case SURF_REFLE: |
||
| 521 | p_ref = rand.Uniform(0.0, 1.0); |
||
| 522 | if(p_ref < reflection) { // se odbije |
||
| 523 | cosTi = in.GetN() * n; |
||
| 524 | transmit = in.GetN() - 2*cosTi*n; |
||
| 525 | out->Set(intersect, transmit); |
||
| 526 | return 2; //sdhfvjhsdbfjhsdbcvjhsb |
||
| 527 | } else { // se ne odbije |
||
| 528 | transmit = in.GetN(); |
||
| 529 | out->Set(intersect, transmit); |
||
| 530 | return -2; |
||
| 531 | } |
||
| 532 | break; |
||
| 533 | |||
| 534 | // total reflection from n1 to n2 with R probbability |
||
| 535 | case SURF_IMPER: |
||
| 536 | p_ref = rand.Uniform(0.0, 1.0); |
||
| 537 | if(p_ref < reflection) { // se odbije |
||
| 538 | cosTi = in.GetN() * n; |
||
| 539 | if(TMath::Abs(cosTi) < cosTtotal) { // totalni odboj |
||
| 540 | transmit = in.GetN() - 2*cosTi*n; |
||
| 541 | out->Set(intersect, transmit); |
||
| 542 | } else { // ni tot. odboja |
||
| 543 | transmit = in.GetN(); |
||
| 544 | out->Set(intersect, transmit); |
||
| 545 | return -2; |
||
| 546 | } |
||
| 547 | } else { // se ne odbije |
||
| 548 | transmit = in.GetN(); |
||
| 549 | out->Set(intersect, transmit); |
||
| 550 | return -2; |
||
| 551 | } |
||
| 552 | break; |
||
| 553 | |||
| 554 | default: |
||
| 555 | *out = in; |
||
| 556 | break; |
||
| 557 | } |
||
| 558 | |||
| 559 | return 1; |
||
| 560 | } |
||
| 561 | //================================================================================= |
||
| 562 | |||
| 563 | |||
| 564 | //================================================================================= |
||
| 565 | Guide::Guide(TVector3 center0, DetectorParameters ¶meters) |
||
| 566 | { |
||
| 567 | double t; |
||
| 568 | |||
| 569 | TDatime now; rand.SetSeed(now.Get()); |
||
| 570 | |||
| 571 | center = center0; |
||
| 572 | double b = parameters.getB(); |
||
| 573 | double a = parameters.getA(); |
||
| 574 | _d = parameters.getD(); |
||
| 575 | n1 = parameters.getN1(); |
||
| 576 | n2 = parameters.getN2(); |
||
| 577 | // if PlateOn, then n0 = n3 (optical grease), else = n1 (air) |
||
| 578 | double n0 = (parameters.getPlateOn() ? parameters.getN3(): n1); |
||
| 579 | n3 = parameters.getN3(); |
||
| 580 | _r = c_reflectivity; |
||
| 581 | int fresnel = parameters.getFresnel(); |
||
| 582 | |||
| 583 | t = b/2.0; |
||
| 584 | vodnik_edge[0].SetXYZ(0.0, t,-t); vodnik_edge[1].SetXYZ(0.0, t, t); |
||
| 585 | vodnik_edge[2].SetXYZ(0.0,-t, t); vodnik_edge[3].SetXYZ(0.0,-t,-t); |
||
| 586 | t = a/2.0; |
||
| 587 | vodnik_edge[4].SetXYZ(_d, t,-t); vodnik_edge[5].SetXYZ(_d, t, t); |
||
| 588 | vodnik_edge[6].SetXYZ(_d,-t, t); vodnik_edge[7].SetXYZ(_d,-t,-t); |
||
| 589 | |||
| 590 | for(int i = 0; i<8; i++) vodnik_edge[i] += center; |
||
| 591 | |||
| 592 | s_side[0] = new CSurface(SURF_REFRA, vodnik_edge, n0, n2, _r); |
||
| 593 | s_side[0]->FlipN(); |
||
| 594 | |||
| 595 | s_side[1] = new CSurface(SURF_REFRA, vodnik_edge[3], vodnik_edge[2], vodnik_edge[6], vodnik_edge[7], n2, n1, _r); |
||
| 596 | s_side[2] = new CSurface(SURF_REFRA, vodnik_edge[2], vodnik_edge[1], vodnik_edge[5], vodnik_edge[6], n2, n1, _r); |
||
| 597 | s_side[3] = new CSurface(SURF_REFRA, vodnik_edge[1], vodnik_edge[0], vodnik_edge[4], vodnik_edge[5], n2, n1, _r); |
||
| 598 | s_side[4] = new CSurface(SURF_REFRA, vodnik_edge[0], vodnik_edge[3], vodnik_edge[7], vodnik_edge[4], n2, n1, _r); |
||
| 599 | |||
| 600 | s_side[5] = new CSurface(SURF_REFRA, &vodnik_edge[4], n2, n3, _r); |
||
| 601 | s_side[5]->FlipN(); |
||
| 602 | |||
| 603 | if(fresnel) for(int i=0; i<6; i++) s_side[i]->SetFresnel(1); |
||
| 604 | |||
| 605 | hfate = (TH1F*)gROOT->FindObject("hfate"); if(hfate) delete hfate; |
||
| 606 | hfate = new TH1F("hfate", "Ray fate", 8, -3.5, 4.5); |
||
| 607 | (hfate->GetXaxis())->SetBinLabel(1, "Back Ref"); |
||
| 608 | (hfate->GetXaxis())->SetBinLabel(2, "Ref Loss"); |
||
| 609 | (hfate->GetXaxis())->SetBinLabel(3, "No Tot Refl"); |
||
| 610 | (hfate->GetXaxis())->SetBinLabel(4, "LG Miss"); |
||
| 611 | (hfate->GetXaxis())->SetBinLabel(5, "Exit"); |
||
| 612 | (hfate->GetXaxis())->SetBinLabel(6, "Enter"); |
||
| 613 | (hfate->GetXaxis())->SetBinLabel(7, "Rays"); |
||
| 614 | (hfate->GetXaxis())->SetBinLabel(8, "Absorb"); |
||
| 615 | |||
| 616 | hnodb_all = (TH1F*)gROOT->FindObject("hnodb_all"); if(hnodb_all) delete hnodb_all; |
||
| 617 | hnodb_all = new TH1F("hnodb_all", "N reflected", VODNIK_MAX_ODB, -0.5, VODNIK_MAX_ODB-0.5); |
||
| 618 | |||
| 619 | hnodb_exit = (TH1F*)gROOT->FindObject("hnodb_exit"); if(hnodb_exit) delete hnodb_exit; |
||
| 620 | hnodb_exit = new TH1F("hnodb_exit", "N reflected and exit", VODNIK_MAX_ODB, -0.5, VODNIK_MAX_ODB-0.5); |
||
| 621 | |||
| 622 | int nBins = nch + 1; |
||
| 623 | hin = (TH2F*)gROOT->FindObject("hin"); if(hin) delete hin; |
||
| 624 | hin = new TH2F("hin", "Guide entrance window", nBins, -b/2.0, +b/2.0, nBins, -b/2.0, +b/2.0); |
||
| 625 | |||
| 626 | hout = (TH2F*)gROOT->FindObject("hout"); if(hout) delete hout; |
||
| 627 | hout = new TH2F("hout", "Guide exit window", nBins, -a/2.0, +a/2.0, nBins, -a/2.0, +a/2.0); |
||
| 628 | |||
| 629 | absorption = 0; |
||
| 630 | A = 0; |
||
| 631 | } |
||
| 632 | //----------------------------------------------------------------------------- |
||
| 633 | // Sledi zarku skozi vodnik. Vrne: |
||
| 634 | // 0, ce zgresi vstopno ploskev |
||
| 635 | // 1, ce zadane izstopno ploskev |
||
| 636 | // -1, ce se v vodniku ne odbije totalno |
||
| 637 | // 2, enter the light guide, bin 2 of hfate = refraction |
||
| 638 | // -2, ce se ne odbije zaradi koncnega R stranic |
||
| 639 | // -3, ce se odbije nazaj in gre nazaj ven skozi sprednjo ploskev |
||
| 640 | // +4, ce se absorbira v materialu |
||
| 641 | Fate Guide::PropagateRay(CRay in, CRay *out, int *n_points, TVector3 *points) |
||
| 642 | { |
||
| 643 | if (dbg) printf("--- GUIDE::PropagateRay ---\n"); |
||
| 644 | CRay ray0; |
||
| 645 | CRay ray1; |
||
| 646 | TVector3 vec0, vec1; |
||
| 647 | //int fate = 11; |
||
| 648 | int inters_i = 0; |
||
| 649 | |||
| 650 | ray0 = in; |
||
| 651 | int n_odb = 0; |
||
| 652 | int last_hit = 0; |
||
| 653 | int propagation = 0; |
||
| 654 | if( !(s_side[0]->PropagateRay(ray0, &ray1, &vec1)) ) { |
||
| 655 | // ce -NI- presecisca z vstopno |
||
| 656 | if (dbg) printf(" GUIDE: missed the light guide\n"); |
||
| 657 | fate = missed; |
||
| 658 | hfate->Fill(0); |
||
| 659 | } else { |
||
| 660 | if (dbg) printf(" GUIDE: ray entered\n"); |
||
| 661 | points[0] = ray1.GetR(); |
||
| 662 | hfate->Fill(2); // enter |
||
| 663 | hin->Fill(vec1.y(), vec1.z()); |
||
| 664 | if (dbg) printf(" GUIDE: n_odb = %d\n", n_odb); |
||
| 665 | while (n_odb++ < VODNIK_MAX_ODB) { |
||
| 666 | if (dbg) printf(" GUIDE: Boundary test: %d\n",n_odb); |
||
| 667 | ray0 = ray1; |
||
| 668 | vec0 = vec1; |
||
| 669 | propagation = 11; |
||
| 670 | for(inters_i=0; inters_i<6; inters_i++) { |
||
| 671 | if (dbg) printf(" GUIDE: Test intersection with surface %d \n", inters_i); |
||
| 672 | if( inters_i != last_hit) { |
||
| 673 | int testBoundary = s_side[inters_i]->TestIntersection(&vec1, ray1); |
||
| 674 | if( testBoundary ) { |
||
| 675 | if (dbg) printf(" GUIDE: ray intersects with LG surface %d\n",inters_i); |
||
| 676 | break; |
||
| 677 | } |
||
| 678 | } |
||
| 679 | } |
||
| 680 | points[n_odb] = vec1; |
||
| 681 | if(inters_i == 0) { |
||
| 682 | fate = backreflected; |
||
| 683 | hfate->Fill(backreflected); |
||
| 684 | break; |
||
| 685 | } // backreflection |
||
| 686 | |||
| 687 | propagation = s_side[inters_i]->PropagateRay(ray0, &ray1, &vec1); |
||
| 688 | if (dbg) printf(" GUIDE: surface = %d, propagation = %d\n", inters_i, propagation); |
||
| 689 | if(inters_i == 5) { // successfull exit |
||
| 690 | // check on which side the vector is? |
||
| 691 | TVector3 ray = ray1.GetN(); |
||
| 692 | TVector3 exitNormal = s_side[5]->GetN(); |
||
| 693 | //printf("theta(ray) = %lf, theta(normal5) = %lf ", ray.Theta()*DEGREE, exitNormal.Theta()*DEGREE); |
||
| 694 | //printf("phi(ray) = %lf, phi(normal5) = %lf\n", ray.Phi()*DEGREE, exitNormal.Phi()*DEGREE); |
||
| 695 | if (dbg) printf("ray*n_5 = %lf\n", ray*exitNormal); |
||
| 696 | if (ray*exitNormal > 0) { |
||
| 697 | if (dbg) printf(" GUIDE: ray is backreflected from exit window.\n"); |
||
| 698 | fate = backreflected; |
||
| 699 | n_odb++; |
||
| 700 | points[n_odb] = vec1; |
||
| 701 | ray0 = ray1; |
||
| 702 | break; |
||
| 703 | } |
||
| 704 | fate = hit; |
||
| 705 | hout->Fill(vec1.y(), vec1.z()); |
||
| 706 | hnodb_exit->Fill(n_odb-1); |
||
| 707 | n_odb++; |
||
| 708 | points[n_odb] = vec1; |
||
| 709 | ray0 = ray1; |
||
| 710 | break; |
||
| 711 | } |
||
| 712 | if(propagation == REFRACTION) { |
||
| 713 | fate = refracted; |
||
| 714 | n_odb++; |
||
| 715 | points[n_odb] = vec1; |
||
| 716 | ray0 = ray1; |
||
| 717 | break; |
||
| 718 | } // no total reflection when should be |
||
| 719 | if(propagation == -2) { |
||
| 720 | fate = noreflection; |
||
| 721 | break; |
||
| 722 | } //refraction due to finite reflectivity |
||
| 723 | |||
| 724 | last_hit = inters_i; |
||
| 725 | } |
||
| 726 | } |
||
| 727 | |||
| 728 | //--- material absorption --- |
||
| 729 | if(absorption) { |
||
| 730 | double travel = 0.0; |
||
| 731 | printf("n_odb = %d\n", n_odb); //dbg |
||
| 732 | for(int point = 0; point < n_odb-1; point++) { |
||
| 733 | travel += (points[point] - points[point+1]).Mag(); |
||
| 734 | printf("travel = %lf\n", travel); //dbg |
||
| 735 | } |
||
| 736 | double T_abs = TMath::Exp(-travel/A); |
||
| 737 | printf("T_abs = %lf\n", T_abs); //dbg |
||
| 738 | double p_abs = rand.Uniform(0.0, 1.0); |
||
| 739 | printf("p_abs = %lf\n", p_abs); //dbg |
||
| 740 | |||
| 741 | if(p_abs > T_abs) fate = absorbed; // absorption |
||
| 742 | } |
||
| 743 | //--- material absorption --- |
||
| 744 | |||
| 745 | hfate->Fill(fate); |
||
| 746 | hfate->Fill(3); |
||
| 747 | hnodb_all->Fill(n_odb-2); |
||
| 748 | *n_points = n_odb+1; |
||
| 749 | *out = ray0; |
||
| 750 | return fate; |
||
| 751 | } |
||
| 752 | //----------------------------------------------------------------------------- |
||
| 753 | void Guide::GetVFate(int *out) |
||
| 754 | { |
||
| 755 | for(int i=0;i<7;i++) out[i] = (int)hfate->GetBinContent(i+1); |
||
| 756 | } |
||
| 757 | //----------------------------------------------------------------------------- |
||
| 758 | void Guide::Draw(int color, int width) |
||
| 759 | { |
||
| 760 | for(int i = 0; i<6; i++) s_side[i]->Draw(color, width); |
||
| 761 | } |
||
| 762 | //----------------------------------------------------------------------------- |
||
| 763 | void Guide::DrawSkel(int color, int width) |
||
| 764 | { |
||
| 765 | TPolyLine3D *line3d = new TPolyLine3D(2); |
||
| 766 | line3d->SetLineWidth(width); line3d->SetLineColor(color); |
||
| 767 | |||
| 768 | for(int i=0; i<4; i++) { |
||
| 769 | line3d->SetPoint(0, vodnik_edge[i+0].x(), vodnik_edge[i+0].y(), vodnik_edge[i+0].z()); |
||
| 770 | line3d->SetPoint(1, vodnik_edge[i+4].x(), vodnik_edge[i+4].y(), vodnik_edge[i+4].z()); |
||
| 771 | line3d->DrawClone(); |
||
| 772 | } |
||
| 773 | } |
||
| 774 | //================================================================================= |
||
| 775 | |||
| 776 | //================================================================================= |
||
| 777 | int CPlaneR::TestIntersection(TVector3 *vec, CRay ray) |
||
| 778 | { |
||
| 779 | double num, den; //stevec, imenovalec |
||
| 780 | double t; |
||
| 781 | TVector3 tmp; |
||
| 782 | |||
| 783 | if(dbg) printf("---> CPlaneR::TestIntersection <---\n"); |
||
| 784 | if(dbg) {printf("c = "); printv(center); printf(" | n = "); printv(n); printf("\n");} |
||
| 785 | |||
| 786 | double D = - n*center; |
||
| 787 | num = n*ray.GetR() + D; |
||
| 788 | den = n*ray.GetN(); |
||
| 789 | |||
| 790 | if(dbg) printf("D = %.4lf | num = %.4lf | den = %.4lf\n", D, num, den); |
||
| 791 | |||
| 792 | if(TMath::Abs(den) < MARGIN) { |
||
| 793 | if(TMath::Abs(num) < MARGIN) |
||
| 794 | return 0; |
||
| 795 | else |
||
| 796 | return 0; |
||
| 797 | } |
||
| 798 | |||
| 799 | t = num / den; |
||
| 800 | |||
| 801 | if(dbg) printf("t = %.4lf | ", t); |
||
| 802 | |||
| 803 | tmp = ray.GetR(); |
||
| 804 | tmp -= t*ray.GetN(); |
||
| 805 | *vec = tmp; |
||
| 806 | |||
| 807 | if(dbg) {printv(tmp); printf(" | Rv = %.4lf <> R = %.4lf\n", ((tmp - center).Mag()), _r);} |
||
| 808 | |||
| 809 | |||
| 810 | if( ((tmp - center).Mag()) < _r ) |
||
| 811 | return 1; |
||
| 812 | else |
||
| 813 | return 0; |
||
| 814 | } |
||
| 815 | //----------------------------------------------------------------------------- |
||
| 816 | void CPlaneR::Draw(int color, int width) |
||
| 817 | { |
||
| 818 | const int NN = 32; |
||
| 819 | double phi, x, y; |
||
| 820 | |||
| 821 | TPolyLine3D *arc; |
||
| 822 | arc = new TPolyLine3D(NN+1); |
||
| 823 | arc->SetLineWidth(width); |
||
| 824 | arc->SetLineColor(color); |
||
| 825 | |||
| 826 | for(int i=0; i<=NN; i++) { |
||
| 827 | phi = i*2.0*TMath::Pi()/NN; |
||
| 828 | x = _r*TMath::Cos(phi); |
||
| 829 | y = _r*TMath::Sin(phi); |
||
| 830 | arc->SetPoint(i, center.x(), x, y); |
||
| 831 | } |
||
| 832 | arc->Draw(); |
||
| 833 | } |
||
| 834 | //================================================================================= |
||
| 835 | |||
| 836 | |||
| 837 | //================================================================================= |
||
| 838 | CDetector::CDetector(TVector3 center0, DetectorParameters& parameters) : |
||
| 839 | center(center0), |
||
| 840 | glass_on(parameters.getGlassOn()), |
||
| 841 | glass_d(parameters.getGlassD()), |
||
| 842 | //x_gap(parameters.getGap().X()), |
||
| 843 | //y_gap(parameters.getGap().Y()), |
||
| 844 | //z_gap(parameters.getGap().Z()), |
||
| 845 | //glass(new CSurface), |
||
| 846 | //glass_circle(new CPlaneR), |
||
| 847 | //active(new CPlane4), |
||
| 848 | col_in(2), |
||
| 849 | col_lg(8), |
||
| 850 | col_out(4), |
||
| 851 | col_rgla(6), |
||
| 852 | col_LG(1), |
||
| 853 | col_glass(4), |
||
| 854 | col_active(7), |
||
| 855 | guide_on(parameters.getGuideOn()), |
||
| 856 | //window_R( parameters.getB() ), |
||
| 857 | //window_d(0), |
||
| 858 | guide(new Guide(center0, parameters)), |
||
| 859 | plate(new Plate(parameters)), |
||
| 860 | _plateWidth(parameters.getPlateWidth()), |
||
| 861 | _plateOn(parameters.getPlateOn()) |
||
| 862 | { |
||
| 863 | // }; |
||
| 864 | |||
| 865 | //----------------------------------------------------------------------------- |
||
| 866 | //void CDetector::Init() |
||
| 867 | //{ |
||
| 868 | double d = parameters.getD(); |
||
| 869 | double x_offset; |
||
| 870 | if(guide_on) x_offset = center.x(); |
||
| 871 | else x_offset = center.x() - d; |
||
| 872 | |||
| 873 | //guide = new CVodnik(center, SiPM, M, d, type_in, type_side, type_out, n1, n2, n3, reflectivity, fresnel, absorption, A); |
||
| 874 | |||
| 875 | double b = parameters.getB(); |
||
| 876 | double n1 = parameters.getN1(); |
||
| 877 | double n2 = parameters.getN2(); |
||
| 878 | //double n3 = parameters.getN3(); |
||
| 879 | double reflectivity = c_reflectivity; // for faster simulation, not using Fresnel eqs. |
||
| 880 | double x_gap = parameters.getGap().X(); |
||
| 881 | double y_gap = parameters.getGap().Y(); |
||
| 882 | double z_gap = parameters.getGap().Z(); |
||
| 883 | |||
| 884 | TVector3 plane_v[4]; |
||
| 885 | int nBins = nch + 1; |
||
| 886 | double p_size = b/2.0; |
||
| 887 | plane_v[0].SetXYZ(x_offset+d+glass_d, y_gap + p_size, z_gap - p_size); |
||
| 888 | plane_v[1].SetXYZ(x_offset+d+glass_d, y_gap + p_size, z_gap + p_size); |
||
| 889 | plane_v[2].SetXYZ(x_offset+d+glass_d, y_gap - p_size, z_gap + p_size); |
||
| 890 | plane_v[3].SetXYZ(x_offset+d+glass_d, y_gap - p_size, z_gap - p_size); |
||
| 891 | glass = new CSurface(SURF_REFRA, plane_v, n2, n1, reflectivity); glass->FlipN(); |
||
| 892 | |||
| 893 | glass_circle = new CPlaneR(TVector3(x_offset+d+glass_d, y_gap, z_gap), TVector3(-1.0, 0.0, 0.0), b); |
||
| 894 | |||
| 895 | hglass = (TH2F*)gROOT->FindObject("hglass"); if(hglass) delete hglass; |
||
| 896 | hglass = new TH2F("hglass", "Hits glass", |
||
| 897 | nBins, y_gap - p_size, y_gap + p_size, |
||
| 898 | nBins, z_gap - p_size, z_gap + p_size); |
||
| 899 | |||
| 900 | |||
| 901 | p_size = parameters.getActive()/2.0; |
||
| 902 | //cout<<"SiPM active length "<<detectorActive<<endl; |
||
| 903 | //p_size = 1.0/2.0; |
||
| 904 | plane_v[0].SetXYZ(x_offset+d+x_gap, y_gap + p_size, z_gap - p_size); |
||
| 905 | plane_v[1].SetXYZ(x_offset+d+x_gap, y_gap + p_size, z_gap + p_size); |
||
| 906 | plane_v[2].SetXYZ(x_offset+d+x_gap, y_gap - p_size, z_gap + p_size); |
||
| 907 | plane_v[3].SetXYZ(x_offset+d+x_gap, y_gap - p_size, z_gap - p_size); |
||
| 908 | active = new CPlane4(plane_v); |
||
| 909 | |||
| 910 | hactive = (TH2F*)gROOT->FindObject("hactive"); if(hactive) delete hactive; |
||
| 911 | hactive = new TH2F("hactive", "Active area hits", nBins, y_gap - p_size, y_gap + p_size, nBins, z_gap - p_size, z_gap + p_size); |
||
| 912 | |||
| 913 | |||
| 914 | p_size = b/2.0; |
||
| 915 | //p_size = 2.5; |
||
| 916 | //p_size = M*0.6; |
||
| 917 | hlaser = (TH2F*)gROOT->FindObject("hlaser"); if(hlaser) delete hlaser; |
||
| 918 | hlaser = new TH2F("hlaser", "Hits at LG entrance", nBins, -p_size, p_size, nBins, -p_size, p_size); |
||
| 919 | |||
| 920 | |||
| 921 | p_size = 2*b/2.0; |
||
| 922 | plane_v[0].SetXYZ(x_offset+d+x_gap, y_gap + p_size, z_gap - p_size); |
||
| 923 | plane_v[1].SetXYZ(x_offset+d+x_gap, y_gap + p_size, z_gap + p_size); |
||
| 924 | plane_v[2].SetXYZ(x_offset+d+x_gap, y_gap - p_size, z_gap + p_size); |
||
| 925 | plane_v[3].SetXYZ(x_offset+d+x_gap, y_gap - p_size, z_gap - p_size); |
||
| 926 | detector = new CPlane4(plane_v); |
||
| 927 | |||
| 928 | hdetector = (TH2F*)gROOT->FindObject("hdetector"); if(hdetector) delete hdetector; |
||
| 929 | hdetector = new TH2F("hdetector", "Hits detector plane", nBins, y_gap - p_size, y_gap + p_size, nBins, z_gap - p_size, z_gap + p_size); |
||
| 930 | |||
| 931 | |||
| 932 | /* |
||
| 933 | window_circle = new CPlaneR(TVector3(x_offset+d+window_d, y_gap, z_gap), TVector3(-1.0, 0.0, 0.0), window_R); |
||
| 934 | |||
| 935 | p_size = M*a; |
||
| 936 | plane_v[0].SetXYZ(x_offset+d+window_d, y_gap + p_size, z_gap - p_size); |
||
| 937 | plane_v[1].SetXYZ(x_offset+d+window_d, y_gap + p_size, z_gap + p_size); |
||
| 938 | plane_v[2].SetXYZ(x_offset+d+window_d, y_gap - p_size, z_gap + p_size); |
||
| 939 | plane_v[3].SetXYZ(x_offset+d+window_d, y_gap - p_size, z_gap - p_size); |
||
| 940 | window = new CSurface(SURF_REFRA, plane_v, n1, n2, reflectivity); window->FlipN(); |
||
| 941 | |||
| 942 | hwindow = (TH2F*)gROOT->FindObject("hwindow"); if(hwindow) delete hwindow; |
||
| 943 | hwindow = new TH2F("hwindow", "Hits Window", nch, y_gap - window_R, y_gap + window_R, nch, z_gap - window_R, z_gap + window_R); |
||
| 944 | */ |
||
| 945 | p_size = b/2.0; |
||
| 946 | histoPlate = (TH2F*)gROOT->FindObject("histoPlate"); if(histoPlate) delete histoPlate; |
||
| 947 | histoPlate = new TH2F("histoPlate", "Hits on glass plate", nBins, -p_size, +p_size, nBins, -p_size, +p_size); |
||
| 948 | } |
||
| 949 | //----------------------------------------------------------------------------- |
||
| 950 | // vrne 1 ce je zadel aktvino povrsino |
||
| 951 | // vrne <1 ce jo zgresi |
||
| 952 | int CDetector::Propagate(CRay in, CRay *out, int draw) |
||
| 953 | // Sledi zarku skozi vodnik. Vrne: |
||
| 954 | // 0, ce zgresi vstopno ploskev MISSED |
||
| 955 | // 1, ce zadane izstopno ploskev HIT |
||
| 956 | // -1, ce se v vodniku ne odbije totalno REFRACTED |
||
| 957 | // 2, enter the light guide, bin 2 of hfate EXIT |
||
| 958 | // -2, ce se ne odbije zaradi koncnega R stranic - no total reflection REFRACTED |
||
| 959 | // -3, ce se odbije nazaj in gre nazaj ven skozi sprednjo ploskev BACK_REFLECTED |
||
| 960 | // +4, ce se absorbira v materialu ABSORBED |
||
| 961 | { |
||
| 962 | if (dbg) printf("--- Detector::Propagate ---\n"); |
||
| 963 | //CRay *ray0 = new CRay; ray0->Set(in.GetR(), in.GetN()); ray0->SetColor(col_in); |
||
| 964 | CRay *rayin = new CRay(in); |
||
| 965 | rayin->SetColor(col_in); |
||
| 966 | CRay *rayout = new CRay; |
||
| 967 | |||
| 968 | const int max_n_points = guide->GetMAXODB() + 2; |
||
| 969 | TVector3 pointsPlate[max_n_points]; |
||
| 970 | //TVector3 intersection; |
||
| 971 | int fatePlate; |
||
| 972 | int nPointsPlate; |
||
| 973 | TPolyLine3D *line3d = new TPolyLine3D(2); |
||
| 974 | line3d->SetLineWidth(1); |
||
| 975 | line3d->SetLineColor(4); |
||
| 976 | |||
| 977 | // Draw the plate and propagate the ray through |
||
| 978 | // check if the ray should be reflected?? |
||
| 979 | |||
| 980 | if(_plateOn) { |
||
| 981 | |||
| 982 | fatePlate = plate->propagateRay(*rayin, rayout, &nPointsPlate, pointsPlate); |
||
| 983 | if(draw) rayin->DrawS(center.x()- _plateWidth, -10.0); |
||
| 984 | |||
| 985 | if(draw) { |
||
| 986 | if(fatePlate == 0) { |
||
| 987 | rayout->SetColor(col_in); |
||
| 988 | rayout->DrawS(center.x() - _plateWidth, -10.0); |
||
| 989 | } |
||
| 990 | else { |
||
| 991 | int p_i; |
||
| 992 | for(p_i = 0; p_i < nPointsPlate-1; p_i++) { |
||
| 993 | line3d->SetPoint(0, pointsPlate[p_i].x(), pointsPlate[p_i].y(), pointsPlate[p_i].z()); |
||
| 994 | line3d->SetPoint(1, pointsPlate[p_i+1].x(), pointsPlate[p_i+1].y(), pointsPlate[p_i+1].z()); |
||
| 995 | line3d->DrawClone(); |
||
| 996 | } |
||
| 997 | if(fatePlate != -2) { |
||
| 998 | //rayout->SetColor(7); |
||
| 999 | rayout->DrawS(pointsPlate[p_i].x(), -0.1); |
||
| 1000 | } |
||
| 1001 | } |
||
| 1002 | } |
||
| 1003 | |||
| 1004 | if(! (fatePlate == 1 or fatePlate == -1) ) { |
||
| 1005 | |||
| 1006 | cout<<"CDetector::propagate Simulated ray missed the entry surface!"<<endl; |
||
| 1007 | return fatePlate; |
||
| 1008 | } |
||
| 1009 | histoPlate->Fill(pointsPlate[0].y(), pointsPlate[0].z()); // entry point |
||
| 1010 | } |
||
| 1011 | else { |
||
| 1012 | rayout = rayin; |
||
| 1013 | if(draw) rayout->DrawS(center.x(), -10.0); |
||
| 1014 | } |
||
| 1015 | |||
| 1016 | // If the ray is not reflected in the plate |
||
| 1017 | // Draw the light guide and propagate the ray through |
||
| 1018 | |||
| 1019 | //const int max_n_points = guide->GetMAXODB() + 2; |
||
| 1020 | TVector3 points[max_n_points]; |
||
| 1021 | TVector3 presecisce; |
||
| 1022 | //int fate; |
||
| 1023 | int n_points; |
||
| 1024 | int fate_glass; |
||
| 1025 | CRay *ray0 = new CRay(*rayout); |
||
| 1026 | // delete rayout; -> creates dangling reference when tries to delete ray0! |
||
| 1027 | //delete rayin; |
||
| 1028 | CRay *ray1 = new CRay; |
||
| 1029 | |||
| 1030 | fate = guide->PropagateRay(*ray0, ray1, &n_points, points); |
||
| 1031 | |||
| 1032 | line3d->SetLineColor(col_lg); |
||
| 1033 | int p_i; |
||
| 1034 | if(guide_on) { |
||
| 1035 | if(draw) { |
||
| 1036 | if(fate == missed) { |
||
| 1037 | if (dbg) printf("Detector: fate=missed\n"); |
||
| 1038 | TVector3 r = ray1->GetR(); |
||
| 1039 | TVector3 n = ray1->GetN(); |
||
| 1040 | ray1->Set(r,n); |
||
| 1041 | ray1->DrawS(center.x(), 10.0); |
||
| 1042 | } else { |
||
| 1043 | for(p_i = 0; p_i < n_points-1; p_i++) { |
||
| 1044 | line3d->SetPoint(0, points[p_i].x(), points[p_i].y(), points[p_i].z()); |
||
| 1045 | line3d->SetPoint(1, points[p_i+1].x(), points[p_i+1].y(), points[p_i+1].z()); |
||
| 1046 | line3d->DrawClone(); |
||
| 1047 | } |
||
| 1048 | if(fate != noreflection) { |
||
| 1049 | if (dbg) printf("Detector: fate != noreflection, fate = %d\n", (int)fate); |
||
| 1050 | if(glass_on) {/*if(fate == 1)*/ ray1->Draw(points[p_i].x(), center.x() + guide->getD() + glass_d);} |
||
| 1051 | else { |
||
| 1052 | ray1->SetColor(col_out); |
||
| 1053 | ray1->DrawS(points[p_i].x(), 10.0); |
||
| 1054 | } |
||
| 1055 | } |
||
| 1056 | } |
||
| 1057 | } |
||
| 1058 | |||
| 1059 | |||
| 1060 | if(! (fate == hit or fate == refracted) ) { |
||
| 1061 | if (dbg) printf("Detector: fate != hit, refracted\n"); |
||
| 1062 | *out = *ray1; |
||
| 1063 | return fate; |
||
| 1064 | } |
||
| 1065 | } else { |
||
| 1066 | if (dbg) printf("Detector: fate = hit or refracted"); |
||
| 1067 | ray1 = ray0; |
||
| 1068 | if(draw) { |
||
| 1069 | if(glass_on) ray1->Draw(center.x(), center.x() /*+ window_d*/); |
||
| 1070 | else ray1->DrawS(center.x(), 10.0); |
||
| 1071 | } |
||
| 1072 | } |
||
| 1073 | |||
| 1074 | /* |
||
| 1075 | TVector3 pres_wind; |
||
| 1076 | fate = window_circle->TestIntersection(&pres_wind, *ray1); |
||
| 1077 | if(fate == 1) { |
||
| 1078 | hwindow->Fill(pres_wind.y(), pres_wind.z()); |
||
| 1079 | |||
| 1080 | if(!guide_on) { |
||
| 1081 | window->PropagateRay(*ray0, ray1, &presecisce); |
||
| 1082 | if(draw) ray1->Draw(center.x() + window_d, center.x() + glass_d); |
||
| 1083 | *ray0 = *ray1; |
||
| 1084 | } |
||
| 1085 | */ |
||
| 1086 | fate = missed; // zgresil aktivno povrsino |
||
| 1087 | if(glass_on) { |
||
| 1088 | *ray0 = *ray1; ray1->SetColor(col_rgla); |
||
| 1089 | fate_glass = glass->PropagateRay(*ray0, ray1, &presecisce); |
||
| 1090 | if(fate_glass == 1) { |
||
| 1091 | hglass->Fill(presecisce.y(), presecisce.z()); |
||
| 1092 | if(draw) ray1->DrawS(presecisce.x(), 10.0); |
||
| 1093 | if(active->TestIntersection(&presecisce, *ray1)) { |
||
| 1094 | fate = hit; |
||
| 1095 | hactive->Fill(presecisce.y(), presecisce.z()); |
||
| 1096 | hlaser->Fill((in.GetR()).y(), (in.GetR()).z()); |
||
| 1097 | } |
||
| 1098 | if(detector->TestIntersection(&presecisce, *ray1)) |
||
| 1099 | hdetector->Fill(presecisce.y(), presecisce.z()); |
||
| 1100 | } else if(fate_glass == 2) { |
||
| 1101 | if(draw) ray1->DrawS(presecisce.x(), 10.0); |
||
| 1102 | } |
||
| 1103 | } else { |
||
| 1104 | if(active->TestIntersection(&presecisce, *ray1)) { |
||
| 1105 | fate = hit; |
||
| 1106 | hactive->Fill(presecisce.y(), presecisce.z()); |
||
| 1107 | hlaser->Fill((in.GetR()).y(), (in.GetR()).z()); |
||
| 1108 | } |
||
| 1109 | if(detector->TestIntersection(&presecisce, *ray1)) |
||
| 1110 | hdetector->Fill(presecisce.y(), presecisce.z()); |
||
| 1111 | } |
||
| 1112 | //} else { |
||
| 1113 | //if(draw) ray1->Draw(presecisce.x(), center.x()+d+window_d); |
||
| 1114 | //} |
||
| 1115 | |||
| 1116 | *out = *ray1; |
||
| 1117 | //delete ray0; |
||
| 1118 | //delete ray1; |
||
| 1119 | return fate; |
||
| 1120 | } |
||
| 1121 | //----------------------------------------------------------------------------- |
||
| 1122 | void CDetector::Draw(int width) |
||
| 1123 | { |
||
| 1124 | if(guide_on) { |
||
| 1125 | if( TMath::Abs(guide->getN1()-guide->getN2()) < MARGIN ) { |
||
| 1126 | if(_plateOn) plate->drawSkel(col_LG, width); |
||
| 1127 | guide->DrawSkel(col_LG, width); |
||
| 1128 | } |
||
| 1129 | else { |
||
| 1130 | if(_plateOn) plate->draw(4, width); |
||
| 1131 | guide->Draw(col_LG, width); |
||
| 1132 | } |
||
| 1133 | } |
||
| 1134 | |||
| 1135 | if(glass_on) glass_circle->Draw(col_glass, width); |
||
| 1136 | //window_circle->Draw(col_glass, width); |
||
| 1137 | active->Draw(col_active, width); |
||
| 1138 | } |
||
| 1139 | //================================================================================= |
||
| 1140 | |||
| 1141 | Plate::Plate(DetectorParameters& parameters) |
||
| 1142 | { |
||
| 1143 | TVector3 center = CENTER; |
||
| 1144 | const double b = parameters.getB(); |
||
| 1145 | const double n1 = parameters.getN1(); |
||
| 1146 | const double n2 = parameters.getN2(); |
||
| 1147 | const double n3 = parameters.getN3(); |
||
| 1148 | const double reflectivity = c_reflectivity; |
||
| 1149 | const double t = b/2.; |
||
| 1150 | const double plateWidth = parameters.getPlateWidth(); |
||
| 1151 | center.SetX( CENTER.X() - plateWidth ); |
||
| 1152 | plate_edge[0].SetXYZ(0.0, t,-t); plate_edge[1].SetXYZ(0.0, t, t); |
||
| 1153 | plate_edge[2].SetXYZ(0.0,-t, t); plate_edge[3].SetXYZ(0.0,-t,-t); |
||
| 1154 | plate_edge[4].SetXYZ(plateWidth, t,-t); plate_edge[5].SetXYZ(plateWidth, t, t); |
||
| 1155 | plate_edge[6].SetXYZ(plateWidth,-t, t); plate_edge[7].SetXYZ(plateWidth,-t,-t); |
||
| 1156 | |||
| 1157 | for(int i = 0; i<8; i++) plate_edge[i] += center; |
||
| 1158 | |||
| 1159 | sides[0] = new CSurface(SURF_REFRA, plate_edge, n1, n2, reflectivity); |
||
| 1160 | sides[0]->FlipN(); |
||
| 1161 | |||
| 1162 | sides[1] = new CSurface(SURF_REFRA, plate_edge[3], plate_edge[2], plate_edge[6], plate_edge[7], n2, n2, reflectivity); |
||
| 1163 | sides[2] = new CSurface(SURF_REFRA, plate_edge[2], plate_edge[1], plate_edge[5], plate_edge[6], n2, n2, reflectivity); |
||
| 1164 | sides[3] = new CSurface(SURF_REFRA, plate_edge[1], plate_edge[0], plate_edge[4], plate_edge[5], n2, n2, reflectivity); |
||
| 1165 | sides[4] = new CSurface(SURF_REFRA, plate_edge[0], plate_edge[3], plate_edge[7], plate_edge[4], n2, n2, reflectivity); |
||
| 1166 | |||
| 1167 | sides[5] = new CSurface(SURF_REFRA, &plate_edge[4], n2, n3, reflectivity); |
||
| 1168 | sides[5]->FlipN(); |
||
| 1169 | |||
| 1170 | for(int i=0; i<6; i++) sides[i]->SetFresnel(1); |
||
| 1171 | } |
||
| 1172 | |||
| 1173 | void Plate::draw(int color, int width) |
||
| 1174 | { |
||
| 1175 | for(int i = 0; i<6; i++) sides[i]->Draw(color, width); |
||
| 1176 | } |
||
| 1177 | |||
| 1178 | void Plate::drawSkel(int color, int width) |
||
| 1179 | { |
||
| 1180 | TPolyLine3D line3d(2); |
||
| 1181 | line3d.SetLineWidth(width); |
||
| 1182 | line3d.SetLineColor(color); |
||
| 1183 | |||
| 1184 | for(int i=0; i<4; i++) { |
||
| 1185 | line3d.SetPoint(0, plate_edge[i+0].x(), plate_edge[i+0].y(), plate_edge[i+0].z()); |
||
| 1186 | line3d.SetPoint(1, plate_edge[i+4].x(), plate_edge[i+4].y(), plate_edge[i+4].z()); |
||
| 1187 | line3d.DrawClone(); |
||
| 1188 | } |
||
| 1189 | } |
||
| 1190 | |||
| 1191 | int Plate::propagateRay(CRay in, CRay *out, int *n_points, TVector3 *points) |
||
| 1192 | { |
||
| 1193 | CRay ray0; |
||
| 1194 | CRay ray1; |
||
| 1195 | TVector3 vec0, vec1; |
||
| 1196 | int fate = 11; |
||
| 1197 | int inters_i = 0; |
||
| 1198 | |||
| 1199 | ray0 = in; |
||
| 1200 | int n_odb = 0; |
||
| 1201 | int last_hit = 0; |
||
| 1202 | int propagation = 0; |
||
| 1203 | |||
| 1204 | if( !(sides[0]->PropagateRay(ray0, &ray1, &vec1)) ) { |
||
| 1205 | // ce -NI- presecisca z vstopno |
||
| 1206 | fate = 0; |
||
| 1207 | } else { |
||
| 1208 | points[0] = ray1.GetR(); |
||
| 1209 | //hfate->Fill(2); |
||
| 1210 | //hin->Fill(vec1.y(), vec1.z()); |
||
| 1211 | while (n_odb++ < VODNIK_MAX_ODB) { |
||
| 1212 | ray0 = ray1; |
||
| 1213 | vec0 = vec1; |
||
| 1214 | propagation = 11; |
||
| 1215 | for(inters_i=0; inters_i<6; inters_i++) { |
||
| 1216 | if( inters_i != last_hit) { |
||
| 1217 | if( sides[inters_i]->TestIntersection(&vec1, ray1) ) break; |
||
| 1218 | } |
||
| 1219 | } |
||
| 1220 | points[n_odb] = vec1; |
||
| 1221 | if(inters_i == 0) { |
||
| 1222 | fate = -3; |
||
| 1223 | break;} // backreflection |
||
| 1224 | |||
| 1225 | propagation = sides[inters_i]->PropagateRay(ray0, &ray1, &vec1); |
||
| 1226 | if(inters_i == 5) { // successfull exit |
||
| 1227 | fate = 1; |
||
| 1228 | //hout->Fill(vec1.y(), vec1.z()); |
||
| 1229 | //hnodb_exit->Fill(n_odb-1); |
||
| 1230 | n_odb++; |
||
| 1231 | points[n_odb] = vec1; |
||
| 1232 | ray0 = ray1; |
||
| 1233 | break; |
||
| 1234 | } |
||
| 1235 | if(propagation == 1) { |
||
| 1236 | fate = -1; |
||
| 1237 | n_odb++; |
||
| 1238 | points[n_odb] = vec1; |
||
| 1239 | ray0 = ray1; |
||
| 1240 | break;} // no total reflection when should be |
||
| 1241 | if(propagation == -2) {fate = -2; break;} // absorption due to finite reflectivity |
||
| 1242 | |||
| 1243 | last_hit = inters_i; |
||
| 1244 | } |
||
| 1245 | } |
||
| 1246 | |||
| 1247 | *n_points = n_odb+1; |
||
| 1248 | *out = ray0; |
||
| 1249 | return fate; |
||
| 1250 | }; |
||
| 1251 | //=============================================================================================================================== <<<<<<<< |
||
| 1252 | |||
| 1253 |