exampleDrawObjects

This example demonstrates how to use the vrvControlToolkit to draw objects remotely on an instance of VR-Vantage.

Upon running this example, any running instances of VR-Vantage that are connected to the appropriate connection (DIS/HLA13/HLA1516) will display the objects rendered by the example. The example will run through a series of 3D objects (sphere/cube/cylinder/line), then move on to 2D objects (text/line/circle/triangle/square). Please note that in order to see the 3D objects, you need to load Makland.mtf, and use the saved view "exampleDrawObjectsMaklandView.osrx".

Building the Example

VR-Vantage includes pre-built versions of the example application. To build it yourself, follow the instructions at Building VR-Vantage Examples, Applications, and Plug-ins.

Running the Example

This example is an application. You can run it by running ./bin/exampleDrawObjects<protocol>.exe (on Windows) or ./bin/exampleDrawObjects<protocol> (on Linux). For more information about running examples, please see Running Applications and Examples.

Example Source Files

• drawObjects.cxx

---

drawObjects.cxx

//********************************************************************
// Copyright (c) 2014 MaK Technologies, Inc.
// All rights reserved.
//********************************************************************


#include <vl/exerciseConn.h>
#include <vl/exerciseConnInitializer.h>
#include <vlutil/vlProcessControl.h>

#include <matrix/utmCoord.h>
#include <matrix/vlTaitBryan.h>

#include <vl/dataInteraction.h>

#include <vrvControl/DtVrlinkDataInterMarshaller.h>
#include <vrvControl/vrvControlToolkitDataTypes.h>

#include <vrvDrawControl/DtCuboidObject.h>
#include <vrvDrawControl/DtEllipsoidObject.h>
#include <vrvDrawControl/DtText3DObject.h>
#include <vrvDrawControl/DtText2DObject.h>
#include <vrvDrawControl/DtLine3DObject.h>
#include <vrvDrawControl/DtCylinderObject.h>
#include <vrvDrawControl/DtRectangleObject.h>
#include <vrvDrawControl/DtTriangle2DObject.h>
#include <vrvDrawControl/DtEllipseObject.h>
#include <vrvDrawControl/DtLine2DObject.h>
#include <vrvDrawControl/DtAttributeGroupObject.h>
#include <vrvDrawControl/DtAttributeGroupTemplateObject.h>


#include <matrix/topoCoord.h>
// #include <stealthControl/absoluteVcPdu.h>

#include <stdio.h>
#include <vlutil/vlKeyboard.h>

using namespace vrvControlToolkit;

DtExerciseConn* exConn;
std::vector<DtDrawControlObject*> myObjects;
DtText2DObject* myText = 0;
DtVrlinkDataInterMarshaller<DtDataInteraction> myCommandMarshaller;


// #if DtHLA
// DtStealthControlInteraction goInter;
// #endif

int id = 0;

// Updates the objects in our objects list.
void updateObjects(double time = 0.0)
{
   if (time > 0.0)
   {
      DtTime tickTime = exConn->clock()->elapsedRealTime();
      while (exConn->clock()->simTime() <= tickTime + time)
      {
         exConn->drainInput();
         for (unsigned int i = 0; i < myObjects.size(); ++i)
         {
            myObjects[i]->update();
         }
         exConn->clock()->setSimTime(exConn->clock()->elapsedRealTime());
         DtSleep(0.1);
      }
   }
   else
   {
      exConn->drainInput();
      for (unsigned int i = 0; i < myObjects.size(); ++i)
      {
         myObjects[i]->update();
      }
      exConn->clock()->setSimTime(exConn->clock()->elapsedRealTime());
   }
}

// Prints a messages in 2D text to the screen.
void setMsg(char *msg)
{
    DtNetU8 ucolor[4] = {255, 255, 255, 255};
    double pos1[2];
 
    pos1[0] = (-40 / 200.) + .5;
    pos1[1] = (70 / 200.) + .5;

    if (!myText)
    {
       myText = new DtText2DObject(exConn, 300, "",
          DtVdcVector2D(pos1[0], pos1[1]));
       exConn->drainInput();
       myText->setFlashing(0);
       DtVdcColor colorToSet(ucolor[0], ucolor[1], ucolor[2], ucolor[3]);
       myText->setColor(colorToSet);
       myObjects.push_back(myText);
    }
    myText->setText(msg);
    myText->update(); 

   // Process any incoming messages.
   exConn->drainInput();
   DtSleep(0.1);
   
}

// Shows the specified set.
void showSet(const DtString& setName)
{
   DtRemoteGraphicSet_v1 showSetCommand;
   sprintf(showSetCommand.mySetName, "%s", setName.c_str());
   showSetCommand.myState = true;

   DtDataInteraction dataInter;
   myCommandMarshaller.encode(&showSetCommand, &dataInter);
   exConn->sendStamped(dataInter);
}

// Hides the specified set.
void hideSet(const DtString& setName)
{
   DtRemoteGraphicSet_v1 showSetCommand;
   sprintf(showSetCommand.mySetName, "%s", setName.c_str());
   showSetCommand.myState = false;

   DtDataInteraction dataInter;
   myCommandMarshaller.encode(&showSetCommand, &dataInter);
   exConn->sendStamped(dataInter);
}

// Runs the 2D demo
void demo2d()
{
   id = 100;

   showSet("2D Objects");
   setMsg("2D Demo, Text....");
   showSet("2D Objects::Text");

   int i;
   unsigned pattern;
   double pos1[2], pos2[2];
   DtVdcColor ucolor(DtVdcColor::DtVdcWhite);
   double scale[3];
   double rot;

   pos1[0] = .1;
   pos1[1] = .3;
   ucolor[0] = 255;ucolor[1] = 255; ucolor[2] = 255; ucolor[3] = 255;
   char texts[3][256] ={"2DText1", "2DText2", "2DText with spaces 3"};
   for (i = 0; i < 3; i++)
   {
      DtText2DObject* text2D = new DtText2DObject(exConn, id++, 
         texts[i], DtVdcVector2D(pos1[0], pos1[1]));
      text2D->setColor(ucolor);
      text2D->setFlashing(((i % 2) != 0));
      text2D->setRemoteGraphicSet("2D Objects::Text");
      myObjects.push_back(text2D);

      updateObjects();

      ucolor[i] -= 50;
      pos1[1] += 0.2;
      DtSleep(1);
   }

   DtSleep(2);
   hideSet("2D Objects::Text");

   setMsg("2D Demo, Squares....");
   showSet("2D Objects::Squares");

   pos1[0] = .3;
   pos1[1] = .2;
   rot = 0;
   scale[0] = 0.15;
   scale[1] = 0.15;
   pattern = 0xffffffff;
   ucolor[0] = 255;ucolor[1] = 255; ucolor[2] = 255; ucolor[3] = 255;

   for (i = 0; i < 4; i++)
   {
      DtRectangleObject* square = new DtRectangleObject(exConn, id++, 
         DtVdcVector2D(pos1[0], pos1[1]), 
         DtVdcVector2D(scale[0] / 2, scale[1] / 2));

      square->setColor(ucolor);
      square->setRotation(rot);
      square->setFlashing((((i+1)%3) == 0));
      square->setFill((((i+1)%3) != 0));
      square->setPattern(pattern);
      square->setRemoteGraphicSet("2D Objects::Squares");
      myObjects.push_back(square);

      updateObjects();
      pattern -= 678;
      ucolor[i%3] -= 120;
      pos1[1] += .15;
      rot += DtDeg2Rad(35);
      scale[i%2] += 0.05 *(i+1);
      DtSleep(1);
   }

   DtSleep(2);
   hideSet("2D Objects::Squares");

   setMsg("2D Demo, Circles....");
   showSet("2D Objects::Circles");

   pos1[0] = 0.5;
   pos1[1] = 0.1;
   rot = 0;
   scale[0] = 0.15;
   scale[1] = 0.15;
   pattern = 0xbbbbbbbb;
   ucolor[0] = 255;ucolor[1] = 255; ucolor[2] = 255; ucolor[3] = 255;

   for (i = 0; i < 4; i++)
   {
      DtEllipseObject* circle = new DtEllipseObject(exConn, id++, 
         DtVdcVector2D(pos1[0], pos1[1]), 
         DtVdcVector2D(scale[0] / 2, scale[1] / 2));

      circle->setFlashing((((i+1)%3) == 0));
      circle->setColor(ucolor);
      circle->setRotation(rot);
      circle->setFill((((i+1)%3) != 0));
      circle->setPattern(pattern);
      circle->setRemoteGraphicSet("2D Objects::Circles");
      myObjects.push_back(circle);

      updateObjects();

      pattern -= 678;
      ucolor[i%3] -= 80;
      pos1[1] += 0.2;
      rot += DtDeg2Rad(55);
      scale[i%2] += 0.05 *(i+1);
      DtSleep(1);
   }

   DtSleep(2);

   hideSet("2D Objects::Circles");

   setMsg("2D Demo, Triangles....");
   showSet("2D Objects::Triangles");

   pos1[0] = 0.7;
   pos1[1] = 0.2;
   rot = 0;
   scale[0] = 0.05;
   scale[1] = 0.05;
   pattern = 0xbbbbbbbb;
   ucolor[0] = 255;ucolor[1] = 255; ucolor[2] = 255; ucolor[3] = 255;
   DtVector points[3];
   points[0] = DtVector(0, 0, .5);
   points[1] = DtVector(1, 0, .5);
   points[2] = DtVector(.5, 1, .5);

   for (i = 0; i < 4; i++)
   {
      DtTriangle2DObject* triangle = new DtTriangle2DObject(exConn, id++,
         DtVdcVector2D(points[0].x(), points[0].y()),
         DtVdcVector2D(points[1].x(), points[1].y()),
         DtVdcVector2D(points[2].x(), points[2].y()));

      triangle->setOffset(DtVdcVector2D(pos1[0], pos1[1]));
      triangle->setFlashing((((i+1)%3) == 0));
      triangle->setColor(ucolor);
      triangle->setRotation(rot);
      triangle->setScale(DtVdcVector2D(scale[0], scale[1]));
      triangle->setFill((((i+1)%3) != 0));
      triangle->setPattern(pattern);
      triangle->setRemoteGraphicSet("2D Objects::Triangles");
      myObjects.push_back(triangle);

      updateObjects();

      pattern -= 678;
      ucolor[i%3] -= 80;
      pos1[1] += 0.2;
      rot += DtDeg2Rad(55);
      scale[i%2] += 0.05 *(i+1);
      DtSleep(1);
   }

   DtSleep(2);
   hideSet("2D Objects::Triangles");

   setMsg("2D Demo, Lines....");
   showSet("2D Objects::Lines");

   pos2[0] = 0.75;
   pos2[1] = 0.2;
   pos1[0] = 0.25;
   pos1[1] = 0.5;
   rot = 0;
   scale[0] = 0.05;
   scale[1] = 0.05;
   pattern = 0xffffffff;
   ucolor[0] = 255;ucolor[1] = 255; ucolor[2] = 80; ucolor[3] = 255;

   int thick = 1;
   for (i = 0; i < 4; i++)
   {
      DtLine2DObject* line = new DtLine2DObject(exConn, id++, 
         DtVdcVector2D(pos1[0], pos1[1]),
         DtVdcVector2D(pos2[0], pos2[1]));
      line->setFlashing((((i+1)%3) == 0));
      line->setArrowStyle((DtVdcLineSegment::DtVdcSegmentArrowStyle)(DtVdcLineSegment::DtVdcSegmentArrowStyleNoArrow + i));
      line->setLineStyle((DtVdcLineSegment::DtVdcSegmentStyle)(DtVdcLineSegment::DtVdcSegmentStyleStraight +
         (((i+2)%3) == 0) * DtVdcLineSegment::DtVdcSegmentStyleLightning));
      line->setThickness(thick);
      line->setColor(ucolor);
      line->setPattern(pattern);
      line->setRemoteGraphicSet("2D Objects::Lines");
      myObjects.push_back(line);
      updateObjects();

      thick += 1;
      pattern -= 678;
      ucolor[i%3] -= 80;
      pos1[1] += .075;
      pos2[1] += .075;
      DtSleep(1);
   }

   DtSleep(2);
   hideSet("2D Objects::Lines");

   pattern = 0xffffffff;
   setMsg("2D Demo, Segmented Line....");   
   showSet("2D Objects::Segmented Lines");

   pos2[0] = 0.9;
   pos2[1] = 0.1;
   pos1[0] = 0.1;
   pos1[1] = 0.9;


   DtLine2DObject* segLine = new DtLine2DObject(exConn, id++, 
      DtVdcVector2D(pos1[0], pos1[1]),
      DtVdcVector2D(pos2[0], pos2[1]),
      4);
   segLine->setFlashing(0);
   segLine->setRemoteGraphicSet("2D Objects::Segmented Lines");

   thick = 1;
   ucolor[0] = 255;ucolor[1] = 255; ucolor[2] = 255; ucolor[3] = 255;
   for (i = 0; i < 4; i++)
   {
      segLine->setColor(ucolor, i);
      segLine->setPattern(pattern, i);
      segLine->setLineStyle((DtVdcLineSegment::DtVdcSegmentStyle)
         (DtVdcLineSegment::DtVdcSegmentStyleStraight + 
         (((i+2)%3) == 0) * DtVdcLineSegment::DtVdcSegmentStyleLightning), i);
      segLine->setArrowStyle((DtVdcLineSegment::DtVdcSegmentArrowStyle)(DtVdcLineSegment::DtVdcSegmentArrowStyleNoArrow + i), i);
      segLine->setThickness(thick, i);
      segLine->setPercentage(.25, i);
      pattern -= 0x11111111;
      ucolor[i%3] -= 100;
      thick += 2;
   }
   myObjects.push_back(segLine);
   updateObjects(2.0);

   setMsg("2D Demo, Changing Segmented Line....");

   int dt = 25;
   int inc = -1;
   for(int j = 0; j < 200; j++)
   {
      segLine->setPercentage((dt * 0.01), 0);
      for (i = 1; i < 3; i++)
      {
         segLine->setPercentage(0.25, i);
      }
      segLine->setPercentage((50 - dt) * 0.01, 3);

      dt += inc;
      if (dt == 25 || dt == 1)
         inc *= -1;

      updateObjects();
      DtSleep(0.1);
   }

   DtSleep(2);
   showSet("2D Objects::Text");
   showSet("2D Objects::Squares");
   showSet("2D Objects::Circles");
   showSet("2D Objects::Triangles");
   showSet("2D Objects::Lines");
   DtSleep(3);
   hideSet("2D Objects");
}

void demo3d()
{
   int i = 0;
   id = 1000;

   showSet("3D Objects");
   setMsg("Sphere...");
   showSet("3D Objects::Ellipsoids");
   
   unsigned sph1 = id++;
   DtEllipsoidObject* sphere = new DtEllipsoidObject(exConn, sph1, 
      DtVdc3DAttachPoint(DtVector(3140149, 5440872, 1101333)),
      DtVector(20, 20, 20));
   DtVdcColor clsp1(0, 255 ,0, 100);
   sphere->setFlashing(false);
   sphere->setColor(clsp1);
   sphere->setRemoteGraphicSet("3D Objects::Ellipsoids");
   myObjects.push_back(sphere);

   updateObjects(2.0);

   setMsg("Scaling sphere...");
   int scales[3];
   scales[0] = 20;
   scales[1] = 20;
   scales[2] = 20;
   int inc = 0;
   inc = 0;
   int clplus = 5;
   for (i = 0; inc < 3; i++)
   {
      scales[inc] += 4;
      clsp1[2] += clplus;
      sphere->setDiameters(DtVector(scales[0], scales[1], scales[2]));
      sphere->setColor(clsp1);

      updateObjects();

      if (scales[inc] > 60)
         inc++;
      DtSleep(0.1);
   }

   setMsg("Rotating sphere...");
   inc = 0;
   scales[0] = 10;
   scales[1] = 10;
   scales[2] = 10;
   for (i = 0; inc < 3; i++)
   {
      scales[inc] += 5;
      clsp1[2] += clplus;
      if (clsp1[2] == 250 || clsp1[2] == 50)
         clplus *= -1;
      sphere->setRotation(DtTaitBryan(DtDeg2Rad(scales[0]), DtDeg2Rad(scales[1]), DtDeg2Rad(scales[2])));
      sphere->setColor(clsp1);
      DtTime tickTime = exConn->clock()->elapsedRealTime();
      updateObjects();
      if (scales[inc] > 60)
         inc++;
      DtSleep(0.1);
   }

   hideSet("3D Objects::Ellipsoids");

   setMsg("Cube...");
   showSet("3D Objects::Cuboids");

   unsigned cubeId = id++;
   DtVdcColor clsp3(0, 0, 255, 100);
   DtCuboidObject* cube = new DtCuboidObject(exConn, cubeId, 
      DtVdc3DAttachPoint(sphere->globalId()), 10, 10, 10);
   cube->setColor(clsp3);
   cube->setRemoteGraphicSet("3D Objects::Cuboids");

   myObjects.push_back(cube);
   updateObjects(2.0);

   setMsg("Scaling cube...");
   scales[0] = 10;
   scales[1] = 10;
   scales[2] = 10;
   inc = 0;
   clplus = 5;
   for (i = 0; inc < 3; i++)
   {
      scales[inc] += 4;
      clsp1[3] += clplus;
      if (clsp1[3] == 250 || clsp1[3] == 50)
         clplus *= -1;
      cube->setLength(scales[0]);
      cube->setWidth(scales[1]);
      cube->setHeight(scales[2]);
      cube->setColor(clsp1);

      updateObjects();

      if (scales[inc] > 60)
         inc++;
      DtSleep(0.1);
   }

   setMsg("Rotating cube...");
   inc = 0;
   scales[0] = 10;
   scales[1] = 10;
   scales[2] = 10;
   for (i = 0; inc < 3; i++)
   {
      scales[inc] += 5;
      clsp1[2] += clplus;
      if (clsp1[2] == 250 || clsp1[2] == 50)
         clplus *= -1;
      cube->setRotation(DtTaitBryan(DtDeg2Rad(scales[0]), DtDeg2Rad(scales[1]), DtDeg2Rad(scales[2])));
      cube->setColor(clsp1);
      
      updateObjects();

      if (scales[inc] > 60)
         inc++;
      DtSleep(0.1);
   }

   cube->setOffset(DtVector32(150, 0, 0));

   updateObjects();

   hideSet("3D Objects::Cuboids");

   setMsg("Cylinder...");
   showSet("3D Objects::Cylinders");

   int cyl1 = id++;
   DtCylinderObject* cylinder = new DtCylinderObject(exConn, cyl1, 
      DtVdc3DAttachPoint(sphere->globalId()), 20, DtVdcVector2D(4, 4));
   cylinder->setFlashing(false);
   DtVdcColor clrcyl1(255, 0, 255, 60);
   cylinder->setColor(clrcyl1);
   cylinder->setRotation(DtTaitBryan(0,0,0));
   cylinder->setRemoteGraphicSet("3D Objects::Cylinders");

   myObjects.push_back(cylinder);

   updateObjects(2.0);

   setMsg("Scaling cylinder...");
   scales[0] = 20;
   scales[1] = 4;
   scales[2] = 4;
   inc = 0;
   clplus = 5;
   int size = 60;
   for (i = 0; inc < 3; i++)
   {
      scales[inc] += 4;
      clsp1[3] += clplus;
      if (clsp1[3] == 250 || clsp1[3] == 50)
         clplus *= -1;
      cylinder->setLength(scales[0]);
      cylinder->setDiameters(DtVdcVector2D(scales[1], scales[2]));
      cylinder->setColor(clsp1);

      updateObjects();

      if (scales[inc] > size)
      {
         inc++;
         size = 15;
      }
      DtSleep(0.1);
   }

   setMsg("Rotating cylinder...");
   inc = 0;
   scales[0] = 10;
   scales[1] = 10;
   scales[2] = 10;
   for (i = 0; inc < 3; i++)
   {
      scales[inc] += 5;
      clsp1[2] += clplus;
      if (clsp1[2] == 250 || clsp1[2] == 50)
         clplus *= -1;
      cylinder->setRotation(DtTaitBryan(DtDeg2Rad(scales[0]), DtDeg2Rad(scales[1]), DtDeg2Rad(scales[2])));
      cylinder->setColor(clsp1);

      updateObjects();

      if (scales[inc] > 60)
         inc++;
      DtSleep(0.1);
   }

   cylinder->setRotation(DtTaitBryan(0,0,0));
   // X is the length, YZ are the radius. Because we are linking between two spheres
   // the length is omited
   cylinder->setLength(120);
   cylinder->setDiameters(DtVdcVector2D(10, 10));

   updateObjects();

   setMsg("3D texts");
   showSet("3D Objects::Text");

   DtText3DObject* text = new DtText3DObject(exConn, id++, "Text One",
      DtVdc3DAttachPoint(cylinder->globalId()));
   DtVdcColor textcolor(255, 255, 0, 255);
   text->setFlashing(false);
   text->setColor(textcolor);
   text->setOffset(DtVector32(0, 15, 0));
   text->setRemoteGraphicSet("3D Objects::Text");
   myObjects.push_back(text);

   updateObjects(2.0);

   DtText3DObject* text2 = new DtText3DObject(exConn, id++, "FLASHING TEXT",
      DtVdc3DAttachPoint(cylinder->globalId()));
   text2->setColor(textcolor);
   text2->setFlashing(true);

   text2->setOffset(DtVector32(45, 0, 0));
   text2->setRemoteGraphicSet("3D Objects::Text");
   myObjects.push_back(text2);

   updateObjects(2.0); 

   DtSleep(4);

   hideSet("3D Objects::Cylinders");
   hideSet("3D Objects::Text");

   setMsg("3D lines");
   showSet("3D Objects::Lines");

   int line1 = id++;
   DtLine3DObject* line = new DtLine3DObject(exConn, line1, 
      DtVdc3DAttachPoint(cylinder->globalId()),
      DtVdc3DAttachPoint(cube->globalId()));

   DtVdcColor linecolor1(255 , 255, 50, 255);
   line->setFlashing(false);
   line->setColor(linecolor1);
   line->setPattern(0xffffffff);
   line->setLineStyle(DtVdcLineSegment::DtVdcSegmentStyleLightning);
   line->setArrowStyle(DtVdcLineSegment::DtVdcSegmentArrowStyleArrowDouble);
   line->setThickness(3);
   line->setOffset(DtVector32(0,0,50));
   line->setRemoteGraphicSet("3D Objects::Lines");
   myObjects.push_back(line);

   updateObjects(2.0);

   DtLine3DObject* line2 = new DtLine3DObject(exConn, id++, 
      DtVdc3DAttachPoint(cylinder->globalId()),
      DtVdc3DAttachPoint(cube->globalId()));

   DtVdcColor linecolor2(255 , 50, 50, 255);
   line2->setFlashing(true);
   line2->setColor(linecolor2);
   line2->setPattern(0xffffffff);
   line2->setLineStyle(DtVdcLineSegment::DtVdcSegmentStyleStraight);
   line2->setArrowStyle(DtVdcLineSegment::DtVdcSegmentArrowStyleArrowDouble);
   line2->setThickness(1);
   line2->setOffset(DtVector32(0, 0, 70));
   line2->setRemoteGraphicSet("3D Objects::Lines");
   myObjects.push_back(line2);

   updateObjects(2.0);

   DtSleep(4);
   hideSet("3D Objects::Lines");

   setMsg("Segmented line....");
   showSet("3D Objects::Segmented Lines");

   DtLine3DObject* segLine = new DtLine3DObject(exConn, id++,
      DtVdc3DAttachPoint(cylinder->globalId()), 
      DtVdc3DAttachPoint(cube->globalId()), 4);
   segLine->setFlashing(0);
   segLine->setOffset(DtVector32(0,0,90));
   segLine->setRemoteGraphicSet("3D Objects::Segmented Lines");
   myObjects.push_back(segLine);

   linecolor2[0] = 255;linecolor2[1] = 255; linecolor2[2] = 255; linecolor2[3] = 255;
   for (i = 0; i < 4; i++)
   {
      segLine->setColor(linecolor2, i);
      segLine->setPattern(0xbbbbbbbb, i);
      segLine->setArrowStyle(DtVdcLineSegment::DtVdcSegmentArrowStyleArrowStart, i);
      segLine->setLineStyle(DtVdcLineSegment::DtVdcSegmentStyleStraight);
      segLine->setThickness(2, i);
      segLine->setPercentage(0.25, i);
      linecolor2[i%3] -= 100;
   }

   updateObjects(2.0);

   setMsg("Changing segmented Line....");

   int dt = 25;
   inc = -1;
   for(int j = 0; j < 200; j++)
   {
      segLine->setPercentage(dt * 0.01, 0);
      for (i = 1; i < 3; i++)
      {
         segLine->setPercentage(0.25, i);
      }
      segLine->setPercentage((50 - dt) * 0.01, 3);
      dt +=inc;
      if (dt == 1 || dt == 25)
         inc *= -1;

      updateObjects();
      DtSleep(0.1);
   }
   DtSleep(2);

   showSet("3D Objects::Cuboids");
   showSet("3D Objects::Ellipsoids");
   showSet("3D Objects::Cylinders");
   showSet("3D Objects::Text");
   showSet("3D Objects::Lines");

   DtSleep(3);
   hideSet("3D Objects");

   return;
}


int main(int argc, char** argv)
{
   DtVrlApplicationInitializer appInit(argc, argv, "drawObjects");
   appInit.parseCmdLine(); 

   exConn = new DtExerciseConn(appInit); 
   exConn->setApplicationId(3, 5);
#if DtHLA
   exConn->ignoreAdvisories();
#endif

   setMsg("start demo 3D..");
   demo3d();
   setMsg("End demo 3D..");

   DtSleep(2);

   setMsg("Start demo 2D..");
   demo2d();
   setMsg("End demo 2D..");

   for (unsigned int i = 0; i < myObjects.size(); ++i)
   {
      delete myObjects[i];
   }

   delete exConn;
   return 0;
}