Gabriele Cosmo
483 lines
17 KiB
C++
483 lines
17 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4FlatSurface.cc,v 1.5 2004/05/28 13:13:36 gcosmo Exp $
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// GEANT4 tag $Name: geant4-06-02 $
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//
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//
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// --------------------------------------------------------------------
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// GEANT 4 class source file
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//
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//
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// G4FlatSurface.cc
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//
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// Author:
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// 01-Aug-2002 - Kotoyo Hoshina (hoshina@hepburn.s.chiba-u.ac.jp)
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//
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// History:
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// 13-Nov-2003 - O.Link (Oliver.Link@cern.ch), Integration in Geant4
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// from original version in Jupiter-2.5.02 application.
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// --------------------------------------------------------------------
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#include "G4FlatSurface.hh"
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//=====================================================================
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//* constructors ------------------------------------------------------
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G4FlatSurface::G4FlatSurface(const G4String &name,
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const G4RotationMatrix &rot,
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const G4ThreeVector &tlate,
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const G4ThreeVector &n,
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const EAxis axis0 ,
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const EAxis axis1 ,
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G4double axis0min,
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G4double axis1min,
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G4double axis0max,
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G4double axis1max )
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: G4VSurface(name, rot, tlate, 0, axis0, axis1,
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axis0min, axis1min, axis0max, axis1max)
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{
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if (axis0 == kPhi && axis1 == kRho) {
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G4Exception("G4FlatSurface::G4FlatSurface()", "InvalidSetup",
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FatalException, "Should swap axis0 and axis1!");
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}
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G4ThreeVector normal = rot.inverse()*n;
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fCurrentNormal.normal = normal.unit(); // in local coordinate system
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fIsValidNorm = true;
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SetCorners();
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SetBoundaries();
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}
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G4FlatSurface::G4FlatSurface( const G4String &name,
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G4double EndInnerRadius[2],
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G4double EndOuterRadius[2],
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G4double DPhi,
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G4double EndPhi[2],
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G4double EndZ[2],
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G4int handedness )
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: G4VSurface(name)
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{
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fHandedness = handedness; // +z = +ve, -z = -ve
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fAxis[0] = kRho; // in local coordinate system
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fAxis[1] = kPhi;
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G4int i = (handedness < 0 ? 0 : 1);
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fAxisMin[0] = EndInnerRadius[i]; // Inner-hype radius at z=0
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fAxisMax[0] = EndOuterRadius[i]; // Outer-hype radius at z=0
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fAxisMin[1] = -0.5*DPhi;
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fAxisMax[1] = -fAxisMin[1];
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fCurrentNormal.normal.set(0, 0, (fHandedness < 0 ? -1 : 1));
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// Unit vector, in local coordinate system
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fRot.rotateZ(EndPhi[i]);
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fTrans.set(0, 0, EndZ[i]);
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fIsValidNorm = true;
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SetCorners();
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SetBoundaries();
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}
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//=====================================================================
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//* destructor --------------------------------------------------------
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G4FlatSurface::~G4FlatSurface()
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{
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}
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//=====================================================================
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//* GetNormal ---------------------------------------------------------
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G4ThreeVector G4FlatSurface::GetNormal(const G4ThreeVector & /* xx */ ,
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G4bool isGlobal)
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{
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if (isGlobal) {
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return ComputeGlobalDirection(fCurrentNormal.normal);
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} else {
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return fCurrentNormal.normal;
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}
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}
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//=====================================================================
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//* DistanceToSurface(p, v) -------------------------------------------
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G4int G4FlatSurface::DistanceToSurface(const G4ThreeVector &gp,
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const G4ThreeVector &gv,
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G4ThreeVector gxx[],
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G4double distance[],
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G4int areacode[],
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G4bool isvalid[],
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EValidate validate)
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{
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fCurStatWithV.ResetfDone(validate, &gp, &gv);
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if (fCurStatWithV.IsDone()) {
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G4int i;
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for (i=0; i<fCurStatWithV.GetNXX(); i++) {
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gxx[i] = fCurStatWithV.GetXX(i);
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distance[i] = fCurStatWithV.GetDistance(i);
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areacode[i] = fCurStatWithV.GetAreacode(i);
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isvalid[i] = fCurStatWithV.IsValid(i);
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}
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return fCurStatWithV.GetNXX();
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} else {
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// initialize
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G4int i;
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for (i=0; i<2; i++) {
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distance[i] = kInfinity;
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areacode[i] = sOutside;
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isvalid[i] = false;
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gxx[i].set(kInfinity, kInfinity, kInfinity);
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}
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}
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G4ThreeVector p = ComputeLocalPoint(gp);
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G4ThreeVector v = ComputeLocalDirection(gv);
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//
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// special case!
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// if p is on surface, distance = 0.
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//
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if (fabs(p.z()) == 0.) { // if p is on the plane
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distance[0] = 0;
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G4ThreeVector xx = p;
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gxx[0] = ComputeGlobalPoint(xx);
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if (validate == kValidateWithTol) {
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areacode[0] = GetAreaCode(xx);
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if (!IsOutside(areacode[0])) {
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isvalid[0] = true;
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}
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} else if (validate == kValidateWithoutTol) {
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areacode[0] = GetAreaCode(xx, false);
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if (IsInside(areacode[0])) {
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isvalid[0] = true;
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}
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} else { // kDontValidate
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areacode[0] = sInside;
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isvalid[0] = true;
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}
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return 1;
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}
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//
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// special case end
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//
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if (v.z() == 0) {
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fCurStatWithV.SetCurrentStatus(0, gxx[0], distance[0], areacode[0],
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isvalid[0], 0, validate, &gp, &gv);
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return 0;
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}
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distance[0] = - (p.z() / v.z());
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G4ThreeVector xx = p + distance[0]*v;
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gxx[0] = ComputeGlobalPoint(xx);
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if (validate == kValidateWithTol) {
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areacode[0] = GetAreaCode(xx);
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if (!IsOutside(areacode[0])) {
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if (distance[0] >= 0) isvalid[0] = true;
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}
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} else if (validate == kValidateWithoutTol) {
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areacode[0] = GetAreaCode(xx, false);
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if (IsInside(areacode[0])) {
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if (distance[0] >= 0) isvalid[0] = true;
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}
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} else { // kDontValidate
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areacode[0] = sInside;
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if (distance[0] >= 0) isvalid[0] = true;
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}
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fCurStatWithV.SetCurrentStatus(0, gxx[0], distance[0], areacode[0],
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isvalid[0], 1, validate, &gp, &gv);
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#ifdef G4SPECSDEBUG
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G4cerr << "ERROR - G4FlatSurface::DistanceToSurface(p,v)" << G4endl;
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G4cerr << " Name : " << GetName() << G4endl;
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G4cerr << " xx : " << xx << G4endl;
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G4cerr << " gxx[0] : " << gxx[0] << G4endl;
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G4cerr << " dist[0] : " << distance[0] << G4endl;
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G4cerr << " areacode[0] : " << areacode[0] << G4endl;
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G4cerr << " isvalid[0] : " << isvalid[0] << G4endl;
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}
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#endif
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return 1;
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}
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//=====================================================================
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//* DistanceToSurface(p) ----------------------------------------------
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G4int G4FlatSurface::DistanceToSurface(const G4ThreeVector &gp,
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G4ThreeVector gxx[],
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G4double distance[],
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G4int areacode[])
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{
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// Calculate distance to plane in local coordinate,
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// then return distance and global intersection points.
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//
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fCurStat.ResetfDone(kDontValidate, &gp);
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if (fCurStat.IsDone()) {
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G4int i;
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for (i=0; i<fCurStat.GetNXX(); i++) {
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gxx[i] = fCurStat.GetXX(i);
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distance[i] = fCurStat.GetDistance(i);
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areacode[i] = fCurStat.GetAreacode(i);
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}
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return fCurStat.GetNXX();
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} else {
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// initialize
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G4int i;
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for (i=0; i<2; i++) {
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distance[i] = kInfinity;
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areacode[i] = sOutside;
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gxx[i].set(kInfinity, kInfinity, kInfinity);
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}
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}
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G4ThreeVector p = ComputeLocalPoint(gp);
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G4ThreeVector xx;
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// The plane is placed on origin with making its normal
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// parallel to z-axis.
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if (fabs(p.z()) <= 0.5 * kCarTolerance) { // if p is on the plane, return 1
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distance[0] = 0;
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xx = p;
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} else {
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distance[0] = fabs(p.z());
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xx.set(p.x(), p.y(), 0);
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}
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gxx[0] = ComputeGlobalPoint(xx);
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areacode[0] = sInside;
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G4bool isvalid = true;
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fCurStat.SetCurrentStatus(0, gxx[0], distance[0], areacode[0],
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isvalid, 1, kDontValidate, &gp);
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return 1;
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}
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//=====================================================================
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//* GetAreaCode -------------------------------------------------------
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G4int G4FlatSurface::GetAreaCode(const G4ThreeVector &xx,
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G4bool withTol)
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{
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static const G4double rtol = 0.5*kRadTolerance;
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G4int areacode = sInside;
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if (fAxis[0] == kRho && fAxis[1] == kPhi) {
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G4int rhoaxis = 0;
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// G4int phiaxis = 0;
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G4ThreeVector dphimin; // direction of phi-minimum boundary
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G4ThreeVector dphimax; // direction of phi-maximum boundary
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dphimin = GetCorner(sCMax1Min);
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dphimax = GetCorner(sCMax1Max);
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if (withTol) {
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G4bool isoutside = false;
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// test boundary of rho-axis
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if (xx.getRho() <= fAxisMin[rhoaxis] + rtol) {
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areacode |= (sAxis0 & (sAxisRho | sAxisMin)) | sBoundary; // rho-min
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if (xx.getRho() < fAxisMin[rhoaxis] - rtol) isoutside = true;
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} else if (xx.getRho() >= fAxisMax[rhoaxis] - rtol) {
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areacode |= (sAxis0 & (sAxisRho | sAxisMax)) | sBoundary; // rho-max
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if (xx.getRho() > fAxisMax[rhoaxis] + rtol) isoutside = true;
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}
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// test boundary of phi-axis
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if (AmIOnLeftSide(xx, dphimin) >= 0) { // xx is on dphimin
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areacode |= (sAxis1 & (sAxisPhi | sAxisMin));
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if (areacode & sBoundary) areacode |= sCorner; // xx is on the corner.
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else areacode |= sBoundary;
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if (AmIOnLeftSide(xx, dphimin) > 0) isoutside = true;
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} else if (AmIOnLeftSide(xx, dphimax) <= 0) { // xx is on dphimax
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areacode |= (sAxis1 & (sAxisPhi | sAxisMax));
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if (areacode & sBoundary) areacode |= sCorner; // xx is on the corner.
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else areacode |= sBoundary;
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if (AmIOnLeftSide(xx, dphimax) < 0) isoutside = true;
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}
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// if isoutside = true, clear inside bit.
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// if not on boundary, add axis information.
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if (isoutside) {
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G4int tmpareacode = areacode & (~sInside);
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areacode = tmpareacode;
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} else if ((areacode & sBoundary) != sBoundary) {
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areacode |= (sAxis0 & sAxisRho) | (sAxis1 & sAxisPhi);
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}
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} else {
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// out of boundary of rho-axis
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if (xx.getRho() < fAxisMin[rhoaxis]) {
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areacode |= (sAxis0 & (sAxisRho | sAxisMin)) | sBoundary;
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} else if (xx.getRho() > fAxisMax[rhoaxis]) {
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areacode |= (sAxis0 & (sAxisRho | sAxisMax)) | sBoundary;
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}
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// out of boundary of phi-axis
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if (AmIOnLeftSide(xx, dphimin, false) >= 0) { // xx is leftside or
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areacode |= (sAxis1 & (sAxisPhi | sAxisMin)) ; // boundary of dphimin
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if (areacode & sBoundary) areacode |= sCorner; // xx is on the corner.
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else areacode |= sBoundary;
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} else if (AmIOnLeftSide(xx, dphimax, false) <= 0) { // xx is rightside or
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areacode |= (sAxis1 & (sAxisPhi | sAxisMax)) ; // boundary of dphimax
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if (areacode & sBoundary) areacode |= sCorner; // xx is on the corner.
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else areacode |= sBoundary;
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}
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if ((areacode & sBoundary) != sBoundary) {
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areacode |= (sAxis0 & sAxisRho) | (sAxis1 & sAxisPhi);
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}
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}
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return areacode;
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} else {
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G4cerr << "ERROR - G4FlatSurface::GetAreaCode()" << G4endl
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<< " fAxis[0] = " << fAxis[0] << G4endl
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<< " fAxis[1] = " << fAxis[1] << G4endl;
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G4Exception("G4FlatSurface::GetAreaCode()", "NotImplemented",
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FatalException, "Feature NOT implemented !");
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}
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return areacode;
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}
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//=====================================================================
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//* SetCorners --------------------------------------------------------
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void G4FlatSurface::SetCorners()
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{
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// Set Corner points in local coodinate.
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if (fAxis[0] == kRho && fAxis[1] == kPhi) {
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G4int rhoaxis = 0; // kRho
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G4int phiaxis = 1; // kPhi
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G4double x, y, z;
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// corner of Axis0min and Axis1min
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x = fAxisMin[rhoaxis]*cos(fAxisMin[phiaxis]);
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y = fAxisMin[rhoaxis]*sin(fAxisMin[phiaxis]);
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z = 0;
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SetCorner(sCMin1Min, x, y, z);
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// corner of Axis0max and Axis1min
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x = fAxisMax[rhoaxis]*cos(fAxisMin[phiaxis]);
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y = fAxisMax[rhoaxis]*sin(fAxisMin[phiaxis]);
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z = 0;
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SetCorner(sCMax1Min, x, y, z);
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// corner of Axis0max and Axis1max
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x = fAxisMax[rhoaxis]*cos(fAxisMax[phiaxis]);
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y = fAxisMax[rhoaxis]*sin(fAxisMax[phiaxis]);
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z = 0;
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SetCorner(sCMax1Max, x, y, z);
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// corner of Axis0min and Axis1max
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x = fAxisMin[rhoaxis]*cos(fAxisMax[phiaxis]);
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y = fAxisMin[rhoaxis]*sin(fAxisMax[phiaxis]);
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z = 0;
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SetCorner(sCMin1Max, x, y, z);
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} else {
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G4cerr << "ERROR - G4FlatSurface::SetCorners()" << G4endl
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<< " fAxis[0] = " << fAxis[0] << G4endl
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<< " fAxis[1] = " << fAxis[1] << G4endl;
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G4Exception("G4FlatSurface::SetCorners()", "NotImplemented",
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FatalException, "Feature NOT implemented !");
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}
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}
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//=====================================================================
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//* SetBoundaries() ---------------------------------------------------
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void G4FlatSurface::SetBoundaries()
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{
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// Set direction-unit vector of phi-boundary-lines in local coodinate.
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// Don't call the function twice.
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if (fAxis[0] == kRho && fAxis[1] == kPhi) {
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G4ThreeVector direction;
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// sAxis0 & sAxisMin
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direction = GetCorner(sCMin1Max) - GetCorner(sCMin1Min);
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direction = direction.unit();
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SetBoundary(sAxis0 & (sAxisPhi | sAxisMin), direction,
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GetCorner(sCMin1Min), sAxisPhi);
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// sAxis0 & sAxisMax
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direction = GetCorner(sCMax1Max) - GetCorner(sCMax1Min);
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direction = direction.unit();
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SetBoundary(sAxis0 & (sAxisPhi | sAxisMax), direction,
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GetCorner(sCMax1Min), sAxisPhi);
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// sAxis1 & sAxisMin
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direction = GetCorner(sCMax1Min) - GetCorner(sCMin1Min);
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direction = direction.unit();
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SetBoundary(sAxis1 & (sAxisRho | sAxisMin), direction,
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GetCorner(sCMin1Min), sAxisRho);
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// sAxis1 & sAxisMax
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direction = GetCorner(sCMax1Max) - GetCorner(sCMin1Max);
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direction = direction.unit();
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SetBoundary(sAxis1 & (sAxisRho | sAxisMax), direction,
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GetCorner(sCMin1Max), sAxisPhi);
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} else {
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G4cerr << "ERROR - G4FlatSurface::SetBoundaries()" << G4endl
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<< " fAxis[0] = " << fAxis[0] << G4endl
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<< " fAxis[1] = " << fAxis[1] << G4endl;
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G4Exception("G4FlatSurface::SetBoundaries()", "NotImplemented",
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FatalException, "Feature NOT implemented !");
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}
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}
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