Gabriele Cosmo
134 lines
4.6 KiB
C++
134 lines
4.6 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: G4ProjectedSurface.hh,v 1.6 2001/07/11 09:59:36 gunter Exp $
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// GEANT4 tag $Name: geant4-05-00 $
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//
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// ----------------------------------------------------------------------
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// Class G4ProjectedSurface
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//
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// Class description:
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//
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// Definition of a projected surface.
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// Authors: J.Sulkimo, P.Urban.
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// Revisions by: L.Broglia, G.Cosmo.
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// ----------------------------------------------------------------------
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#ifndef __G4ProjectedSurface_h
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#define __G4ProjectedSurface_h 1
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#include "G4BezierSurface.hh"
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class G4ProjectedSurface : public G4Surface
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{
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friend class G4BSplineSurface;
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friend void CopySurface(G4ProjectedSurface& proj);
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public: // with description
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G4ProjectedSurface();
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virtual ~G4ProjectedSurface();
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// Default constructor and destructor.
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void CalcBBox();
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// Finds the bounds of the 2D-projected nurb, it
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// calculates the bounds for a bounding rectangle
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// to the surface. The bounding rectangle is used
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// for a preliminary check of intersection.
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public: // without description
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inline G4Vector3D SurfaceNormal(const G4Point3D& Pt) const;
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// Returns normal to surface (G4Vector3D(0,0,0)).
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protected:
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static G4int Splits;
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G4ControlPoints *ctl_points;
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// Test variables
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private:
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G4ProjectedSurface(const G4ProjectedSurface&);
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G4ProjectedSurface& operator=(const G4ProjectedSurface&);
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// Private copy constructor and assignment operator.
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void CopySurface();
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// Copies the projected surface into a bezier surface
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// and adds it to the List of bezier surfaces.
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void ConvertToBezier (G4SurfaceList& p, G4SurfaceList& b);
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// Converts surface into a Bezier surface to b.
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inline G4int GetOrder(G4int direction) const;
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inline void PutOrder(G4int direction, G4int value);
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void SplitNURBSurface();
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// Divides the surface in two parts. Uses the oslo-algorithm to calculate
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// the new knot-vectors and control-points for the subsurfaces.
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G4int CheckBezier();
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// Checks if the surface is a Bezier surface by verifying
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// if internal knots exist. If no internal knots exist the quantity
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// of knots is 2*order of the surface. Returns 1 if the surface
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// is a Bezier.
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void CalcOsloMatrix();
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// Calculates the oslo-matrix, which is used in mapping the new
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// knot-vector and the control-point values.
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// This algorithm is described in the paper "Making the Oslo-algorithm
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// more efficient" in SIAM J.NUMER.ANAL. Vol.23, No. 3, June '86.
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void MapSurface(G4ProjectedSurface* srf);
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// Maps the new control-points into the new surface.
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// This algorithm is described in the paper "Making the Oslo-algorithm
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// more efficient" in SIAM J.NUMER.ANAL. Vol.23, No. 3, June '86.
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inline G4int Amax(G4int i, G4int j) const;
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inline G4int Amin(G4int i, G4int j) const;
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inline G4int AhIndex(G4int j, G4int t, G4int iorder) const;
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private:
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short dir;
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G4KnotVector *u_knots;
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G4KnotVector *v_knots;
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G4SurfaceList* projected_list;
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G4SurfaceList* bezier_list;
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G4int order[2];
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G4KnotVector *new_knots;
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G4int ord;
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G4int lower,upper;
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G4OsloMatrix* oslo_m;
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G4Point3D vmin;
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G4Point3D vmax;
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};
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#include "G4ProjectedSurface.icc"
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#endif
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