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 #ifndef DETECTOR_DESCRIPTION_CORE_DD_SOLID_H
 #define DETECTOR_DESCRIPTION_CORE_DD_SOLID_H
 
 #include <cstddef>
 #include <iosfwd>
 #include <memory>
 #include <vector>
 
 #include "DetectorDescription/Core/interface/DDTranslation.h"
 #include "DetectorDescription/Core/interface/DDBase.h"
 #include "DetectorDescription/Core/interface/DDName.h"
 #include "DetectorDescription/Core/interface/DDSolidShapes.h"
 #include "DetectorDescription/Core/interface/DDTransform.h"
 
 class DDSolid;
 
 namespace DDI {
   class BooleanSolid;
   class MultiUnion;
   class Reflection;
   class Solid;
 }  // namespace DDI
 struct DDSolidFactory;
 
 std::ostream& operator<<(std::ostream&, const DDSolid&);
 
 //! A DDSolid represents the shape of a part.
 /** An object of this class is a reference-object and thus is a lightweight
     class. It can be copied by value without having a large overhead.
     Assignment to the reference-object invalidates the object to which it was 
     referred.  Assignment also affects all other instances of this class which 
     were created using the same value of DDName. In fact, the value of DDName
     identifies a DDSolid uniquely.
     
     For further details concerning the usage of reference-objects refer
     to the documentation of DDLogicalPart.   
 
 */
 class DDSolid : public DDBase<DDName, std::unique_ptr<DDI::Solid>> {
   friend std::ostream& operator<<(std::ostream&, const DDSolid&);
   friend struct DDSolidFactory;
 
 public:
   //! Uninitialilzed solid reference-object; for further details on reference-objects see documentation of DDLogicalPart
   DDSolid(void);
 
   //! Creates a reference-object to a solid named \a name
   /** If the solid was not yet created using one of the solid generating factory 
       functions \c DDbox(), \c DDtub , ... this constructor creates a (default) 
       initialized reference object named \a name. It can be used as placeholder 
       everywhere and becomes a reference to a valid solid as soon as one of the 
       factory functions \c DDBox, ... has been called (using the same value for DDName).
       
       For further details concerning reference-objects refer to the documentation of DDLogicalPart.       
   */
   DDSolid(const DDName& name);
 
   //! Give the parameters of the solid
   const std::vector<double>& parameters(void) const;
 
   //! Returns the volume of the given solid (\b does \b not \b work \b with \b boolean \b soids \b !)
   double volume(void) const;
 
   //! The type of the solid
   DDSolidShape shape(void) const;
 
 private:
   DDSolid(const DDName&, std::unique_ptr<DDI::Solid>);
   DDSolid(const DDName&, DDSolidShape, const std::vector<double>&);
 };
 
 //! Interface to an Assembly
 /**
    The definition of an Assembly is
    the same as in Geant4.
 */
 class DDAssembly : public DDSolid {
 public:
   DDAssembly(const DDSolid& s);
   DDAssembly(void) = delete;
 };
 
 //! Interface to a Trapezoid
 /**
    The definition (parameters, local frame) of the Trapezoid is 
    the same than in Geant4.
 */
 class DDTrap : public DDSolid {
 public:
   DDTrap(const DDSolid& s);
   DDTrap(void) = delete;
 
   //! half of the z-Axis
   double halfZ(void) const;
   //! Polar angle of the line joining the centres of the faces at -/+pDz
   double theta(void) const;
   //! Azimuthal angle of the line joining the centres of the faces at -/+pDz
   double phi(void) const;
   //! Half-length along y of the face at -pDz
   double y1(void) const;
   //! Half-length along x of the side at y=-pDy1 of the face at -pDz
   double x1(void) const;
   //! Half-length along x of the side at y=+pDy1 of the face at -pDz
   double x2(void) const;
   //! Angle with respect to the y axis from the centre of the side at y=-pDy1 to the centre at y=+pDy1 of the face at -pDz
   double alpha1(void) const;
   //! Half-length along y of the face at +pDz
   double y2(void) const;
   //! Half-length along x of the side at y=-pDy2 of the face at +pDz
   double x3(void) const;
   //! Half-length along x of the side at y=+pDy2 of the face at +pDz
   double x4(void) const;
   //! Angle with respect to the y axis from the centre of the side at y=-pDy2 to the centre at y=+pDy2 of the face at +pDz
   double alpha2(void) const;
 };
 
 class DDPseudoTrap : public DDSolid {
 public:
   DDPseudoTrap(const DDSolid& s);
   DDPseudoTrap(void) = delete;
 
   //! half of the z-Axis
   double halfZ(void) const;
   //! half length along x on -z
   double x1(void) const;
   //! half length along x on +z
   double x2(void) const;
   //! half length along y on -z
   double y1(void) const;
   //! half length along y on +z
   double y2(void) const;
   //! radius of the cut-out (neg.) or rounding (pos.)
   double radius(void) const;
   //! true, if cut-out or rounding is on the -z side
   bool atMinusZ(void) const;
 };
 
 /// A truncated tube section
 class DDTruncTubs : public DDSolid {
 public:
   DDTruncTubs(const DDSolid& s);
   DDTruncTubs(void) = delete;
 
   //! half of the z-Axis
   double zHalf(void) const;
   //! inner radius
   double rIn(void) const;
   //! outer radius
   double rOut(void) const;
   //! angular start of the tube-section
   double startPhi(void) const;
   //! angular span of the tube-section
   double deltaPhi(void) const;
   //! truncation at begin of the tube-section
   double cutAtStart(void) const;
   //! truncation at end of the tube-section
   double cutAtDelta(void) const;
   //! true, if truncation is on the inner side of the tube-section
   bool cutInside(void) const;
 };
 
 //! Interface to a Box
 /**
    The definition (parameters, local frame) of the Box is 
    the same than in Geant4.
 */
 class DDBox : public DDSolid {
 public:
   DDBox(const DDSolid& s);
   DDBox(void) = delete;
 
   double halfX(void) const;
   double halfY(void) const;
   double halfZ(void) const;
 };
 
 /// This is simply a handle on the solid.
 class DDShapelessSolid : public DDSolid {
 public:
   DDShapelessSolid(const DDSolid& s);
   DDShapelessSolid(void) = delete;
 };
 
 class DDBooleanSolid : public DDSolid {
 public:
   DDBooleanSolid(const DDSolid& s);
   DDBooleanSolid(void) = delete;
 
   DDSolid solidA(void) const;
   DDSolid solidB(void) const;
   DDTranslation translation(void) const;
   DDRotation rotation(void) const;
 
 private:
   const DDI::BooleanSolid& boolean_;
 };
 
 class DDMultiUnionSolid : public DDSolid {
 public:
   DDMultiUnionSolid(const DDSolid& s);
   DDMultiUnionSolid(void) = delete;
 
   const std::vector<DDSolid>& solids(void) const;
   const std::vector<DDTranslation>& translations(void) const;
   const std::vector<DDRotation>& rotations(void) const;
 
 private:
   DDI::MultiUnion* union_;
 };
 
 /// Abstract class for DDPolycone and DDPolyhedra.  Basically a common member function.
 class DDPolySolid : public DDSolid {
 public:
   DDPolySolid(const DDSolid& s);
   DDPolySolid(void) = delete;
 
 protected:
   /// note defaults please.
   virtual std::vector<double> getVec(const size_t& which, const size_t& offset = 0, const size_t& nVecs = 1) const;
 };
 
 class DDPolycone : public DDPolySolid {
 public:
   DDPolycone(const DDSolid& s);
   DDPolycone(void) = delete;
 
   double startPhi(void) const;
   double deltaPhi(void) const;
   std::vector<double> zVec(void) const;
   std::vector<double> rVec(void) const;
   std::vector<double> rMinVec(void) const;
   std::vector<double> rMaxVec(void) const;
 };
 
 class DDPolyhedra : public DDPolySolid {
 public:
   DDPolyhedra(const DDSolid& s);
   DDPolyhedra(void) = delete;
 
   int sides(void) const;
   double startPhi(void) const;
   double deltaPhi(void) const;
   std::vector<double> zVec(void) const;
   std::vector<double> rVec(void) const;
   std::vector<double> rMinVec(void) const;
   std::vector<double> rMaxVec(void) const;
 };
 
 class DDExtrudedPolygon : public DDPolySolid {
 public:
   DDExtrudedPolygon(const DDSolid& s);
   DDExtrudedPolygon(void) = delete;
 
   std::vector<double> xVec(void) const;
   std::vector<double> yVec(void) const;
   std::vector<double> zVec(void) const;
   std::vector<double> zxVec(void) const;
   std::vector<double> zyVec(void) const;
   std::vector<double> zscaleVec(void) const;
 
 private:
   auto xyPointsSize(void) const -> std::size_t;
   auto zSectionsSize(void) const -> std::size_t;
 };
 
 class DDTubs : public DDSolid {
 public:
   DDTubs(const DDSolid& s);
   DDTubs(void) = delete;
 
   double zhalf(void) const;
   double rIn(void) const;
   double rOut(void) const;
   double startPhi(void) const;
   double deltaPhi(void) const;
 };
 
 class DDCutTubs : public DDSolid {
 public:
   DDCutTubs(const DDSolid& s);
   DDCutTubs(void) = delete;
 
   double zhalf(void) const;
   double rIn(void) const;
   double rOut(void) const;
   double startPhi(void) const;
   double deltaPhi(void) const;
   std::array<double, 3> lowNorm(void) const;
   std::array<double, 3> highNorm(void) const;
 };
 
 class DDCons : public DDSolid {
 public:
   DDCons(const DDSolid& s);
   DDCons(void) = delete;
 
   double zhalf(void) const;
   double rInMinusZ(void) const;
   double rOutMinusZ(void) const;
   double rInPlusZ(void) const;
   double rOutPlusZ(void) const;
   double phiFrom(void) const;
   double deltaPhi(void) const;
 };
 
 class DDTorus : public DDSolid {
 public:
   DDTorus(const DDSolid& s);
   DDTorus(void) = delete;
 
   double rMin(void) const;
   double rMax(void) const;
   double rTorus(void) const;
   double startPhi(void) const;
   double deltaPhi(void) const;
 };
 
 class DDUnion : public DDBooleanSolid {
 public:
   DDUnion(const DDSolid& s);
   DDUnion(void) = delete;
 };
 
 class DDMultiUnion : public DDMultiUnionSolid {
 public:
   DDMultiUnion(const DDSolid& s);
   DDMultiUnion(void) = delete;
 };
 
 class DDIntersection : public DDBooleanSolid {
 public:
   DDIntersection(const DDSolid& s);
   DDIntersection(void) = delete;
 };
 
 class DDSubtraction : public DDBooleanSolid {
 public:
   DDSubtraction(const DDSolid& s);
   DDSubtraction(void) = delete;
 };
 
 class DDSphere : public DDSolid {
 public:
   DDSphere(const DDSolid& s);
   DDSphere(void) = delete;
 
   double innerRadius(void) const;
   double outerRadius(void) const;
   double startPhi(void) const;
   double deltaPhi(void) const;
   double startTheta(void) const;
   double deltaTheta(void) const;
 };
 
 class DDOrb : public DDSolid {
 public:
   DDOrb(const DDSolid& s);
   DDOrb(void) = delete;
 
   double radius(void) const;
 };
 
 class DDEllipticalTube : public DDSolid {
 public:
   DDEllipticalTube(const DDSolid& s);
   DDEllipticalTube(void) = delete;
 
   double xSemiAxis(void) const;
   double ySemiAxis(void) const;
   double zHeight(void) const;
 };
 
 class DDEllipsoid : public DDSolid {
 public:
   DDEllipsoid(const DDSolid& s);
   DDEllipsoid(void) = delete;
 
   double xSemiAxis(void) const;
   double ySemiAxis(void) const;
   double zSemiAxis(void) const;
   double zBottomCut(void) const;
   double zTopCut(void) const;
 };
 
 class DDParallelepiped : public DDSolid {
 public:
   DDParallelepiped(const DDSolid& s);
   DDParallelepiped(void) = delete;
 
   double xHalf(void) const;
   double yHalf(void) const;
   double zHalf(void) const;
   double alpha(void) const;
   double theta(void) const;
   double phi(void) const;
 };
 
 // Solid generation functions
 //
 struct DDSolidFactory {
   //! Creates an assembly
   static DDSolid assembly(const DDName& name);
 
   //! Creates a box with side length 2*xHalf, 2*yHalf, 2*zHalf
   /** \arg \c name unique name identifying the box
       \arg \c xHalf half length in x 
       \arg \c yHalf half length in y
       \arg \c zHalf helf length in z
       The center of the box (for positioning) is the center of gravity.
   */
   static DDSolid box(const DDName& name, double xHalf, double yHalf, double zHalf);
 
   //! Creates a polycone (refere to \b Geant3 or \b Geant4 documentation)
   /** The center of the polycone (for positioning) is the center of coordinates
       of the polycone definition (x=y=z=0)
   */
   static DDSolid polycone(const DDName& name,
                           double startPhi,
                           double deltaPhi,
                           const std::vector<double>& z,
                           const std::vector<double>& rmin,
                           const std::vector<double>& rmax);
 
   //! Creates a polycone (refere to \b Geant4 documentation)
   /** The center of the polycone (for positioning) is the center of coordinates
       of the polycone definition (x=y=z=0)
   */
   static DDSolid polycone(
       const DDName& name, double startPhi, double deltaPhi, const std::vector<double>& z, const std::vector<double>& r);
 
   //! Creates a polyhedra (refere to \b Geant3 or \b Geant4 documentation)
   /** The center of the polyhedra (for positioning) is the center of coordinates
       of the polyhedra definition (x=y=z=0)
   */
   static DDSolid polyhedra(const DDName& name,
                            int sides,
                            double startPhi,
                            double deltaPhi,
                            const std::vector<double>& z,
                            const std::vector<double>& rmin,
                            const std::vector<double>& rmax);
 
   //! Creates a polyhedra (refere to \b Geant4 documentation)
   /** The center of the polyhedra (for positioning) is the center of coordinates
       of the polyhedra definition (x=y=z=0)
   */
   static DDSolid polyhedra(const DDName& name,
                            int sides,
                            double startPhi,
                            double deltaPhi,
                            const std::vector<double>& z,
                            const std::vector<double>& r);
 
   static DDSolid unionSolid(
       const DDName& name, const DDSolid& a, const DDSolid& b, const DDTranslation& t, const DDRotation& r);
 
   static DDSolid multiUnionSolid(const DDName& name,
                                  const std::vector<DDSolid>& a,
                                  const std::vector<DDTranslation>& t,
                                  const std::vector<DDRotation>& r);
 
   static DDSolid intersection(
       const DDName& name, const DDSolid& a, const DDSolid& b, const DDTranslation& t, const DDRotation& r);
 
   static DDSolid subtraction(
       const DDName& name, const DDSolid& a, const DDSolid& b, const DDTranslation& t, const DDRotation& r);
 
   static DDSolid trap(const DDName& name,
                       double pDz,
                       double pTheta,
                       double pPhi,
                       double pDy1,
                       double pDx1,
                       double pDx2,
                       double pAlp1,
                       double pDy2,
                       double pDx3,
                       double pDx4,
                       double pAlp2);
 
   static DDSolid pseudoTrap(const DDName& name,
                             double pDx1,    /**< Half-length along x at the surface positioned at -dz */
                             double pDx2,    /**< Half-length along x at the surface positioned at +dz */
                             double pDy1,    /**< Half-length along y at the surface positioned at -dz */
                             double pDy2,    /**< Half-length along y at the surface positioned at +dz */
                             double pDz,     /**< Half of the height of the pseudo trapezoid along z */
                             double radius,  /**< radius of the cut-out (negative sign) or rounding (pos. sign) */
                             bool atMinusZ); /**< if true, the cut-out or rounding is applied at -dz, else at +dz */
 
   static DDSolid truncTubs(const DDName& name,
                            double zHalf,      /**< half-length of the z-axis */
                            double rIn,        /**< inner radius of the tube-section */
                            double rOut,       /**< outer radius of the tube-section */
                            double startPhi,   /**< starting angle of the tube-section */
                            double deltaPhi,   /**< spanning angle of the tube-section */
                            double cutAtStart, /**< tructation */
                            double cutAtDelta, /**< */
                            bool cutInside);
 
   static DDSolid tubs(const DDName& name, double zhalf, double rIn, double rOut, double startPhi, double deltaPhi);
 
   static DDSolid cuttubs(const DDName& name,
                          double zhalf,
                          double rIn,
                          double rOut,
                          double startPhi,
                          double deltaPhi,
                          double lx,
                          double ly,
                          double lz,
                          double tx,
                          double ty,
                          double tz);
 
   static DDSolid cons(const DDName& name,
                       double zhalf,
                       double rInMinusZ,
                       double rOutMinusZ,
                       double rInPlusZ,
                       double rOutPlusZ,
                       double phiFrom,
                       double deltaPhi);
 
   static DDSolid torus(const DDName& name, double rMin, double rMax, double rTorus, double startPhi, double deltaPhi);
 
   static DDSolid sphere(const DDName& name,
                         double innerRadius,
                         double outerRadius,
                         double startPhi,
                         double deltaPhi,
                         double startTheta,
                         double deltaTheta);
 
   static DDSolid orb(const DDName& name, double radius);
 
   static DDSolid ellipticalTube(const DDName& name, double xSemiAxis, double ySemiAxis, double zHeight);
 
   static DDSolid ellipsoid(const DDName& name,
                            double xSemiAxis,
                            double ySemiAxis,
                            double zSemiAxis,
                            double zBottomCut = 0.,
                            double zTopCut = 0.);
 
   static DDSolid parallelepiped(
       const DDName& name, double xHalf, double yHalf, double zHalf, double alpha, double theta, double phi);
 
   static DDSolid extrudedpolygon(const DDName& name,
                                  const std::vector<double>& x,
                                  const std::vector<double>& y,
                                  const std::vector<double>& z,
                                  const std::vector<double>& zx,
                                  const std::vector<double>& zy,
                                  const std::vector<double>& zscale);
 
   static DDSolid shapeless(const DDName& name);
 
   static DDSolid reflection(const DDName& name, const DDSolid& s);
 };
 
 #endif

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