// @(#)root/g3d:$Name:  $:$Id: TPGON.cxx,v 1.1.1.1 2000/05/16 17:00:43 rdm Exp $
// Author: Nenad Buncic   29/09/95

/*************************************************************************
 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/

#include "TPGON.h"

ClassImp(TPGON)

//______________________________________________________________________________
//  

// PGON is a polygon. It // // - name name of the shape // - title shape's title // - material (see TMaterial) // - phi1 the azimuthal angle &phi at which the volume begins (angles // are counted counterclockwise) // - dphi1 opening angle of the volume, which extends from phi1 to // phi1+dphi // - npdv number of sides of the cross section between the given // phi limits // - nz number of planes perpendicular to the z axis where // the dimension of the section is given -- this number // should be at least 2 // - rmin array of dimension nz with minimum radius at a given plane // - rmax array of dimension nz with maximum radius at a given plane // - z array of dimension nz with z position of given plane //______________________________________________________________________________ TPGON::TPGON () { //*-*-*-*-*-*-*-*-*-*-*-*-*PGON shape default constructor*-*-*-*-*-*-*-*-*-*-*-* //*-* ============================== } //______________________________________________________________________________ TPGON::TPGON (const char *name, const char *title, const char *material, Float_t phi1, Float_t dphi1, Int_t npdv, Int_t nz) : TPCON (name, title,material, phi1, dphi1, nz) { //*-*-*-*-*-*-*-*-*-*-*-*-*PGON shape normal constructor*-*-*-*-*-*-*-*-*-*-*-*-* //*-* ============================= //*-* Parameters of the nz positions must be entered via TPCON::DefineSection. SetNumberOfDivisions (npdv); } //______________________________________________________________________________ TPGON::~TPGON () { //*-*-*-*-*-*-*-*-*-*-*-*-*PGON shape default destructor*-*-*-*-*-*-*-*-*-*-*-*-* //*-* ============================= } //______________________________________________________________________________ void TPGON::FillTableOfCoSin(Double_t phi, Double_t angstep,Int_t n) { // Fill the table of cos and sin to prepare drawing Double_t factor = 1./TMath::Cos(angstep/2); Double_t ph = phi-angstep; for (Int_t j = 0; j < n; j++) { ph += angstep; fCoTab[j] = factor*TMath::Cos(ph); fSiTab[j] = factor*TMath::Sin(ph); } }


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