doc/v624/camera__restore_8C.html

void camera_restore(const char* fname, int mode = 0)

{

  TEveManager::Create();

  writeCurrentCamera(fname);

}


void writeCurrentCamera(const char* fname)

{

  TGLCamera& c = gEve->GetDefaultGLViewer()->CurrentCamera();

  TFile* f = TFile::Open(fname, "RECREATE");

  c.Write();

  f->Close();

}


void readCurrentCamera(const char* fname)

{

  TGLCamera& c = gEve->GetDefaultGLViewer()->CurrentCamera();

  TFile* f = TFile::Open(fname, "READ");

  if (!f)

    return;


  if (f->GetKey(c.ClassName())) {

    f->GetKey(c.ClassName())->Read(&c);

    c.IncTimeStamp();

    gEve->GetDefaultGLViewer()->RequestDraw();

  }

}

f
#define f(i)
Definition RSha256.hxx:104

c
#define c(i)
Definition RSha256.hxx:101

gEve
R__EXTERN TEveManager * gEve
Definition TEveManager.h:243

TEveManager::GetDefaultGLViewer
TGLViewer * GetDefaultGLViewer() const
Get TGLViewer of the default TEveViewer.
Definition TEveManager.cxx:265

TEveManager::Create
static TEveManager * Create(Bool_t map_window=kTRUE, Option_t *opt="FIV")
If global TEveManager* gEve is not set initialize it.
Definition TEveManager.cxx:892

TFile
A ROOT file is a suite of consecutive data records (TKey instances) with a well defined format.
Definition TFile.h:54

TFile::Open
static TFile * Open(const char *name, Option_t *option="", const char *ftitle="", Int_t compress=ROOT::RCompressionSetting::EDefaults::kUseCompiledDefault, Int_t netopt=0)
Create / open a file.
Definition TFile.cxx:3997

TGLCamera
Abstract base camera class - concrete classes for orthographic and perspective cameras derive from it...
Definition TGLCamera.h:44

TGLViewer::RequestDraw
void RequestDraw(Short_t LOD=TGLRnrCtx::kLODMed)
Post request for redraw of viewer at level of detail 'LOD' Request is directed via cross thread gVirt...
Definition TGLViewer.cxx:437

TGLViewer::CurrentCamera
TGLCamera & CurrentCamera() const
Definition TGLViewer.h:267