TridStereoGLFrame Class Reference

#include <TridStereoGLFrame.h>

Inheritance diagram for TridStereoGLFrame:

List of all members.

Public Member Functions
	TridStereoGLFrame (TridPage *tp, TGWindow &parent, TridControl *tc, double eyespace=1, const TridPOV &min=kTridPOV_DefaultRangeLow, const TridPOV &max=kTridPOV_DefaultRangeHigh)
virtual	~TridStereoGLFrame ()
virtual void	Update ()
virtual void	TransformToPOV ()
virtual void	SetupProjection ()
virtual Bool_t	HandleMotion (Event_t *ev)
virtual void	SetEyespace (double eyespace)
Protected Attributes
double	fEyeSpace
Int_t	fWhichEye

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Detailed Description

Definition at line 24 of file TridStereoGLFrame.h.

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Constructor & Destructor Documentation

TridStereoGLFrame::TridStereoGLFrame	(	TridPage *	tp,
		TGWindow &	parent,
		TridControl *	tc,
		double	eyespace = 1,
		const TridPOV &	min = kTridPOV_DefaultRangeLow,
		const TridPOV &	max = kTridPOV_DefaultRangeHigh
	)

Definition at line 19 of file TridStereoGLFrame.cxx.

References fEyeSpace, and TridGLFrame::SetupOpenGL().

  : TridGLFrame( tp, parent, tc, min, max )
{
  //
  // 'scale' is the way to scale OpenGL units to window size.  This is a course control,
  // overridden by the user.
  //
  // Min/max x/y are not limits for drawing, but rather limits to how far the POV center can be moved.
  // These should compare roughly with the drawable area.
  // 
  //
  fEyeSpace = eyespace;

  // Do my own setup.
  SetupOpenGL();

  cout << "TridStereoGLFrame constructor." << endl;
}

TridStereoGLFrame::~TridStereoGLFrame

(

)

[virtual]

Definition at line 43 of file TridStereoGLFrame.cxx.

{
  cout << "TridStereoGLFrame destructor." << endl;
}

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Member Function Documentation

Bool_t TridStereoGLFrame::HandleMotion

(

Event_t *

ev

)

[virtual]

Reimplemented from TridGLFrame.

Definition at line 49 of file TridStereoGLFrame.cxx.

References TridGLFrame::fButton, TridGLFrame::fButtonTraveled, TridGLFrame::fMouseLast_x, TridGLFrame::fMouseLast_y, and TridGLFrame::HandleMotion().

{
  Int_t startx = fMouseLast_x;
  Int_t stopx  = ev->fX;

  Int_t starty = fMouseLast_y;
  Int_t stopy  = ev->fY;

  // Adjust for viewport.
  if(fMouseLast_x > (int)fWidth/2 ) {    
    startx = startx - fWidth/2;
    stopx  = stopx  - fWidth/2;
  } 

  TridGLFrame::HandleMotion(fButton, startx, starty, stopx, stopy);

  fButtonTraveled += abs(ev->fX - fMouseLast_x) + abs(ev->fY - fMouseLast_y);

  fMouseLast_x = ev->fX;
  fMouseLast_y = ev->fY;

  return true;
}

virtual void TridStereoGLFrame::SetEyespace

(

double

eyespace

)

[inline, virtual]

Reimplemented from TridGLFrame.

Definition at line 37 of file TridStereoGLFrame.h.

References fEyeSpace, Particle::Sign(), and Update().

{ fEyeSpace = TMath::Sign(eyespace,fEyeSpace); Update(); };

void TridStereoGLFrame::SetupProjection

(

)

[virtual]

Reimplemented from TridGLFrame.

Definition at line 111 of file TridStereoGLFrame.cxx.

References TridGLFrame::fDrawContext.

{
  // Adjust perspective for the true width.
  gluPerspective(30.0f,(GLfloat)fDrawContext->fWidth/2/(GLfloat)fDrawContext->fHeight,0.1f,100.0f);
}

void TridStereoGLFrame::TransformToPOV

(

)

[virtual]

Reimplemented from TridGLFrame.

Definition at line 118 of file TridStereoGLFrame.cxx.

References fEyeSpace, TridGLFrame::fPOV, fWhichEye, TridPOV::GetDist(), TridPOV::GetPhi(), TridPOV::GetTheta(), TridPOV::GetX(), TridPOV::GetY(), TridPOV::GetZ(), and TridGLFrame::NormalizeAndClipPOV().

Referenced by Update().

{
  // Clip the POV so it conforms to limits.
  NormalizeAndClipPOV();

   // Need to manipulate the ModelView matrix to move our model around.
  glMatrixMode(GL_MODELVIEW);
  
  // Reset to 0,0,0; no rotation, no scaling.
  glLoadIdentity(); 
  
  // Pull back so we can look at it.
  glTranslatef(0.0f,0.0f,-fPOV.GetDist());
  
  // Add eyespace
  if(fWhichEye==0)
    glTranslatef(-fEyeSpace*0.5, 0.0f,0.0f);
  else
    glTranslatef( fEyeSpace*0.5, 0.0f,0.0f);
  
    
  // Rotate to our view.
  glRotatef(fPOV.GetTheta(),1.0f,0.0f,0.0f); // Rotate to elevation.
  if(fPOV.GetPhi()!=0)
    glRotatef(fPOV.GetPhi()  ,0.0f,1.0f,0.0f); // Rotate to side
  
  // Move to our viewpoint.
  glTranslatef(-fPOV.GetX(), -fPOV.GetY(), -fPOV.GetZ());  // Move to our viewpoint.
  
  TVector3 rightdir(-1,0,0); // If no rotation, right is -x
  rightdir.Rotate(-fPOV.GetPhi()*TMath::Pi()/180., // phi in radians. 
                   TVector3(0,1,0)); // Rotate about y axis

}

void TridStereoGLFrame::Update

(

)

[virtual]

Reimplemented from TridGLFrame.

Definition at line 76 of file TridStereoGLFrame.cxx.

References TridGLFrame::ClearViewport(), TridGLFrame::DrawHUD(), TridGLFrame::DrawObjects(), TridGLFrame::fDrawContext, TridGLFrame::fFrameTime, fWhichEye, TridGLFrame::SetupLighting(), TridGLFrame::SetupOptions(), TridGLFrame::SwapBuffers(), and TransformToPOV().

Referenced by SetEyespace().

{
  // Clears and redraws the OpenGL viewport.
  struct timeval timestart,timeend;
  gettimeofday(&timestart,0);

  // Unsure that our window is the current one for OpenGL.
  // (This call must be atomic!)
  glXMakeCurrent(fDrawContext->fDisplay, fDrawContext->fWindow, fDrawContext->fglxContext);
  ClearViewport();      // Wipe blank. (Could be later, but we are double-buffering.)
 
  fWhichEye = 0;
  glViewport(0,0,fWidth/2,fHeight);
  TransformToPOV();     // Set the cmera in world coordinates
  SetupOptions();       // Change OpenGL options
  SetupLighting();      // Put in light sources
  DrawObjects();        // Draw the Sketches
  DrawHUD();            // Put on the overlay.

  fWhichEye = 1;
  glViewport(fWidth/2,0,fWidth/2,fHeight);
  TransformToPOV();     // Set the cmera in world coordinates
  SetupOptions();       // Change OpenGL options
  SetupLighting();      // Put in light sources
  DrawObjects();        // Draw the Sketches
  DrawHUD();            // Put on the overlay.

  glFlush();            // Send commands to X server
  SwapBuffers();
  gettimeofday(&timeend,0);
  
  fFrameTime = (timeend.tv_sec - timestart.tv_sec) +
    (timeend.tv_usec - timestart.tv_usec) * 0.000001;
}

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Member Data Documentation

double TridStereoGLFrame::fEyeSpace [protected]

Definition at line 37 of file TridStereoGLFrame.h.

Referenced by SetEyespace(), TransformToPOV(), and TridStereoGLFrame().

Int_t TridStereoGLFrame::fWhichEye [protected]

Definition at line 41 of file TridStereoGLFrame.h.

Referenced by TransformToPOV(), and Update().

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The documentation for this class was generated from the following files:

• TridStereoGLFrame.h
• TridStereoGLFrame.cxx

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