// @(#)root/g3d:$Name:  $:$Id: TTUBS.cxx,v 1.2 2002/11/11 11:21:16 brun Exp $
// Author: Nenad Buncic   18/09/95

/*************************************************************************
 * 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 "TTUBS.h"
#include "TNode.h"
#include "TVirtualPad.h"
#include "TVirtualGL.h"


ClassImp(TTUBS)

//______________________________________________________________________________
//  

// TUBS is a segment of a tube. It has 8 parameters: // // - name name of the shape // - title shape's title // - material (see TMaterial) // - rmin inside radius // - rmax outside radius // - dz half length in z // - phi1 starting angle of the segment // - phi2 ending angle of the segment // // // NOTE: phi1 should be smaller than phi2. If this is not the case, // the system adds 360 degrees to phi2. //______________________________________________________________________________ TTUBS::TTUBS() { //*-*-*-*-*-*-*-*-*-*-*-*TUBS shape default constructor*-*-*-*-*-*-*-*-*-*-*-*-* //*-* ============================== } //______________________________________________________________________________ TTUBS::TTUBS(const char *name, const char *title, const char *material, Float_t rmin, Float_t rmax, Float_t dz, Float_t phi1, Float_t phi2) : TTUBE(name,title,material,rmin,rmax,dz) { //*-*-*-*-*-*-*-*-*-*-*-*-*TUBS shape normal constructor*-*-*-*-*-*-*-*-*-*-*-*-* //*-* ============================= fPhi1 = phi1; fPhi2 = phi2; MakeTableOfCoSin(); } //______________________________________________________________________________ TTUBS::TTUBS(const char *name, const char *title, const char *material, Float_t rmax, Float_t dz, Float_t phi1, Float_t phi2) : TTUBE(name,title,material,rmax,dz) { //*-*-*-*-*-*-*-*-*-*-*-*-*TUBS shape "simplified" constructor*-*-*-*-*-*-*-*-*-*-*-*-* //*-* =================================== fPhi1 = phi1; fPhi2 = phi2; MakeTableOfCoSin(); } //______________________________________________________________________________ void TTUBS::MakeTableOfCoSin() { const Double_t PI = TMath::ATan(1) * 4.0; const Double_t TWOPI =2*PI; const Double_t ragrad = PI/180.0; Int_t j; Int_t n = GetNumberOfDivisions () + 1; if (fCoTab) delete [] fCoTab; // Delete the old tab if any fCoTab = new Double_t [n]; if (!fCoTab ) return; if (fSiTab) delete [] fSiTab; // Delete the old tab if any fSiTab = new Double_t [n]; if (!fSiTab ) return; Double_t phi1 = Double_t(fPhi1 * ragrad); Double_t phi2 = Double_t(fPhi2 * ragrad); if (phi1 > phi2 ) phi2 += TWOPI; Double_t range = phi2- phi1; Double_t angstep = range/(n-1); Double_t ph = phi1; for (j = 0; j < n; j++) { ph = phi1 + j*angstep; fCoTab[j] = TMath::Cos(ph); fSiTab[j] = TMath::Sin(ph); } } //______________________________________________________________________________ TTUBS::~TTUBS() { //*-*-*-*-*-*-*-*-*-*-*-*-*TUBS shape default destructor*-*-*-*-*-*-*-*-*-*-*-*-* //*-* ============================= } //______________________________________________________________________________ Int_t TTUBS::DistancetoPrimitive(Int_t px, Int_t py) { //*-*-*-*-*-*-*-*Compute distance from point px,py to a TUBE*-*-*-*-*-*-* //*-* =========================================== //*-* //*-* Compute the closest distance of approach from point px,py to each //*-* computed outline point of the TUBE. //*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* Int_t n = GetNumberOfDivisions()+1; Int_t numPoints = n*4; return ShapeDistancetoPrimitive(numPoints,px,py); } //______________________________________________________________________________ void TTUBS::Paint(Option_t *option) { //*-*-*-*-*-*-*-*Paint this 3-D shape with its current attributes*-*-*-*-*-*-*-* //*-* ================================================ Int_t i, j; const Int_t n = GetNumberOfDivisions()+1; const Int_t numpoints = 4*n; //*-* Allocate memory for points *-* Float_t *points = new Float_t[3*numpoints]; if (!points) return; SetPoints(points); Bool_t rangeView = option && *option && strcmp(option,"range")==0 ? kTRUE : kFALSE; if (!rangeView && gPad->GetView3D()) PaintGLPoints(points); //== for (i = 0; i < numpoints; i++) //== gNode->Local2Master(&points[3*i],&points[3*i]); X3DBuffer *buff = new X3DBuffer; if (buff) { buff->numPoints = numpoints; buff->numSegs = 2*numpoints; buff->numPolys = numpoints-2; } buff->points = points; Int_t c = ((GetLineColor() % 8) - 1) * 4; // Basic colors: 0, 1, ... 7 if (c < 0) c = 0; //*-* Allocate memory for segments *-* buff->segs = new Int_t[buff->numSegs*3]; memset(buff->segs, 0, buff->numSegs*3*sizeof(Int_t)); if (buff->segs) { for (i = 0; i < 4; i++) { for (j = 1; j < n; j++) { buff->segs[(i*n+j-1)*3 ] = c; buff->segs[(i*n+j-1)*3+1] = i*n+j-1; buff->segs[(i*n+j-1)*3+2] = i*n+j; } } for (i = 4; i < 6; i++) { for (j = 0; j < n; j++) { buff->segs[(i*n+j)*3 ] = c+1; buff->segs[(i*n+j)*3+1] = (i-4)*n+j; buff->segs[(i*n+j)*3+2] = (i-2)*n+j; } } for (i = 6; i < 8; i++) { for (j = 0; j < n; j++) { buff->segs[(i*n+j)*3 ] = c; buff->segs[(i*n+j)*3+1] = 2*(i-6)*n+j; buff->segs[(i*n+j)*3+2] = (2*(i-6)+1)*n+j; } } } //*-* Allocate memory for polygons *-* Int_t indx = 0; buff->polys = new Int_t[buff->numPolys*6]; memset(buff->polys, 0, buff->numPolys*6*sizeof(Int_t)); if (buff->polys) { for (i = 0; i < 2; i++) { for (j = 0; j < n-1; j++) { buff->polys[indx++] = c; buff->polys[indx++] = 4; buff->polys[indx++] = i*n+j; buff->polys[indx++] = (4+i)*n+j; buff->polys[indx++] = (2+i)*n+j; buff->polys[indx++] = (4+i)*n+j+1; } } for (i = 2; i < 4; i++) { for (j = 0; j < n-1; j++) { buff->polys[indx++] = c+(i-2)*2+1; buff->polys[indx++] = 4; buff->polys[indx++] = (i-2)*2*n+j; buff->polys[indx++] = (4+i)*n+j; buff->polys[indx++] = ((i-2)*2+1)*n+j; buff->polys[indx++] = (4+i)*n+j+1; } } buff->polys[indx++] = c+2; buff->polys[indx++] = 4; buff->polys[indx++] = 6*n; buff->polys[indx++] = 4*n; buff->polys[indx++] = 7*n; buff->polys[indx++] = 5*n; buff->polys[indx++] = c+2; buff->polys[indx++] = 4; buff->polys[indx++] = 7*n-1; buff->polys[indx++] = 5*n-1; buff->polys[indx++] = 8*n-1; buff->polys[indx++] = 6*n-1; } //*-* Paint in the pad PaintShape(buff,rangeView); if (strstr(option, "x3d")) { if(buff && buff->points && buff->segs) FillX3DBuffer(buff); else { gSize3D.numPoints -= buff->numPoints; gSize3D.numSegs -= buff->numSegs; gSize3D.numPolys -= buff->numPolys; } } delete [] points; if (buff->segs) delete [] buff->segs; if (buff->polys) delete [] buff->polys; if (buff) delete buff; } //______________________________________________________________________________ void TTUBS::PaintGLPoints(Float_t *vertex) { //*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*Paint BRIK via OpenGL *-*-*-*-*-*-*-*-*-*-*-*-* //*-* ===================== gVirtualGL->PaintCone(vertex,-(GetNumberOfDivisions()+1),2); } //______________________________________________________________________________ void TTUBS::SetPoints(Float_t *buff) { //*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*Create TUBS points*-*-*-*-*-*-*-*-*-*-*-*-*-*-* //*-* ================== Float_t dz; Int_t j, n; n = GetNumberOfDivisions()+1; dz = TTUBE::fDz; if (buff) { Int_t indx = 0; //*-* We've to checxk whether the table does exist and create it //*-* since fCoTab/fSiTab are not saved with any TShape::Streamer function if (!fCoTab) MakeTableOfCoSin(); for (j = 0; j < n; j++) { buff[indx+6*n] = buff[indx] = fRmin * fCoTab[j]; indx++; buff[indx+6*n] = buff[indx] = fAspectRatio*fRmin * fSiTab[j]; indx++; buff[indx+6*n] = dz; buff[indx] =-dz; indx++; } for (j = 0; j < n; j++) { buff[indx+6*n] = buff[indx] = fRmax * fCoTab[j]; indx++; buff[indx+6*n] = buff[indx] = fAspectRatio*fRmax * fSiTab[j]; indx++; buff[indx+6*n]= dz; buff[indx] =-dz; indx++; } } } //______________________________________________________________________________ void TTUBS::Sizeof3D() const { //*-*-*-*-*-*-*Return total X3D size of this shape with its attributes*-*-*-*-*-* //*-* ======================================================= Int_t n = GetNumberOfDivisions()+1; gSize3D.numPoints += n*4; gSize3D.numSegs += n*8; gSize3D.numPolys += n*4-2; }


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