Example #1
0
int main()
{
  cout << "This is Tut6-fog1 example running" << endl;

  //Step 1 is to initialize SDL. Absolutely critical that your SDL application starts with this!
  if (SDL_Init(SDL_INIT_VIDEO) != 0){
    cout << "Error initializing SDL" << endl;
    return -1;
  }
  //Step 2 is to get a screen/window on which we can do some graphics.

  //create a Videoclass to control the video with
  SDLVideoclass SDLmain(640,480);
  
  if (SDLmain.InitVideo()){
    cout << "Video up and running" << endl;
  }else{
    cout << "Error initializing Video" << endl;
    return 0;
  }

  //get the events up and running
  SDLEventclass SDLevent;


  glEnable(GL_DEPTH_TEST); //enable depth buffer
  glShadeModel(GL_SMOOTH); //use smooth shading mode.
  glEnable(GL_TEXTURE_2D);

  //setup camera:
  glMatrixMode(GL_PROJECTION);
  glLoadIdentity();
  gluPerspective(45.0f,1.33,0.1f,100.0f);   //setup the camera

  glClearColor(0.0,0.0,0.3,0.0);  

  glMatrixMode(GL_MODELVIEW); //switch to modelview matrix for the rest of the example

  //load the textures
  stone = new GLTextureclass;
  stone->Load("stone.bmp");
  stone->SetLinearFilter();

  wash = new GLTextureclass;
  wash->Load("wash.bmp");
  wash->SetLinearFilter();

  //setup blending function:
  glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

  //timescaling as usual:
  Uint32 curticks,prevticks;
  curticks = SDL_GetTicks();

  while (!SDLevent.MustQuit()){
    //events:
    SDLevent.ProcessEvent();

    prevticks = curticks;
    curticks = SDL_GetTicks();
    timescale = GLfloat(curticks-prevticks)/1000.0;

    //graphics:
    drawscene();
    
  }

  SDL_Quit();
  return 0;
}
Example #2
0
int main()
{
  cout << "This is Tut7-array1 example running" << endl;

  //Step 1 is to initialize SDL. Absolutely critical that your SDL application starts with this!
  if (SDL_Init(SDL_INIT_VIDEO) != 0){
    cout << "Error initializing SDL" << endl;
    return -1;
  }
  //Step 2 is to get a screen/window on which we can do some graphics.

  //create a Videoclass to control the video with
  SDLVideoclass SDLmain(640,480);
  
  if (SDLmain.InitVideo()){
    cout << "Video up and running" << endl;
  }else{
    cout << "Error initializing Video" << endl;
    return 0;
  }

  //get the events up and running
  SDLEventclass SDLevent;

  glEnable(GL_DEPTH_TEST); //enable depth buffer
  glShadeModel(GL_SMOOTH); //use smooth shading mode.

  //setup camera:
  glMatrixMode(GL_PROJECTION);
  gluPerspective(45.0f,1.33,0.1f,100.0f);   //setup the camera
   
  glClearColor(0.0,0.0,0.2,0.0);
  glMatrixMode(GL_MODELVIEW);
  glTranslatef(0,0,-7);

  Setup();

  Uint32 curticks,prevticks;
  curticks = SDL_GetTicks();
  GLfloat rotate=34;

  while (!SDLevent.MustQuit()){
    SDLevent.ProcessEvent();

    prevticks = curticks;
    curticks = SDL_GetTicks();
    rotate += 45*GLfloat(curticks-prevticks)/1000.0;
    
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    glTranslatef(0,0,-7);
    glRotatef(rotate,0,1,0);
    

    Draw();


  }




  SDL_Quit();
  return 0;
}
Example #3
0
int main()
{
  cout << "This is Tut6-fog1 example running" << endl;

  //Step 1 is to initialize SDL. Absolutely critical that your SDL application starts with this!
  if (SDL_Init(SDL_INIT_VIDEO) != 0){
    cout << "Error initializing SDL" << endl;
    return -1;
  }
  //Step 2 is to get a screen/window on which we can do some graphics.

  //create a Videoclass to control the video with
  SDLVideoclass SDLmain(640,480);
  
  if (SDLmain.InitVideo()){
    cout << "Video up and running" << endl;
  }else{
    cout << "Error initializing Video" << endl;
    return 0;
  }

  //get the events up and running
  SDLEventclass SDLevent;

  setup();
  GLfloat rotx,roty;
  GLfloat distance;
  rotx = 0;
  roty = 0;
  distance = 10;
  Uint32 curticks,prevticks;
  GLfloat timescale;
  curticks = SDL_GetTicks();

  cout << "Move the cube further and closer with the UP/DOWN arrow keys" << endl;
  cout << "Press ESC to quit" << endl;

  while (!SDLevent.MustQuit()){
    SDLevent.ProcessEvent();
    //events:
    //timescale
    prevticks = curticks;
    curticks = SDL_GetTicks();
    timescale = GLfloat(curticks-prevticks)/1000.0;
    //rotation
    rotx += timescale*60;
    roty += timescale*15;
    if (SDLevent.GetKey(SDLK_UP))
      if (distance < 21)
	distance += timescale*4;
    if (SDLevent.GetKey(SDLK_DOWN))
      if (distance > 4)
	distance -= timescale*4;
    
	 


    //graphics:
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    //setup modelview matrix:
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    glTranslatef(0,0,-distance);
    glRotatef(rotx,1,0,0);
    glRotatef(roty,0,1,0);
    

    drawbox();
    SDL_GL_SwapBuffers();
  }

  SDL_Quit();
  return 0;
}
Example #4
0
int main()
{
  //The first part of this code will by now be pretty standard to you:

  cout << "This is Tut4-lists2 example running" << endl;

  //Step 1 is to initialize SDL. Absolutely critical that your SDL application starts with this!
  if (SDL_Init(SDL_INIT_VIDEO) != 0){
    cout << "Error initializing SDL" << endl;
    return -1;
  }
  //Step 2 is to get a screen/window on which we can do some graphics.

  //create a Videoclass to control the video with
  SDLVideoclass SDLmain(640,480);
  
  if (SDLmain.InitVideo()){
    cout << "Video up and running" << endl;
  }else{
    cout << "Error initializing Video" << endl;
    return 0;
  }

  //get the events up and running
  SDLEventclass SDLevent;


  //some GL setup routines
  glEnable(GL_DEPTH_TEST); //enable depth buffer
  glShadeModel(GL_SMOOTH); //use smooth shading mode.

  //setup camera:
  glMatrixMode(GL_PROJECTION);
  gluPerspective(45.0f,1.33,0.1f,100.0f);   //setup the camera

  //setup modelview matrix:
  glMatrixMode(GL_MODELVIEW);
  glLoadIdentity();
 
  glClearColor(0.0,0.0,0.2,0.0); 

  //Ok lets start with the display list:
  makelists(); 

  GLfloat rot = 0.0;

  Uint32 curticks,prevticks;
  GLfloat timescale;
  curticks = SDL_GetTicks();

  //the heights of the piramids
  GLfloat height1,height2;
  int mod2;
  height1 = 2.0;
  height2 = 2.0;
  mod2 = FALSE;

  cout << "Use Left and Right to rotate piramids" << endl;
  cout << "Change height of piramid 1 with A and Z"  << endl;
  cout << "Change height of piramid 2 with S and X"  << endl;
  //main loop:
  while (!SDLevent.MustQuit()){
    SDLevent.ProcessEvent();
    //main loop 1 - events
    //timescale:
    prevticks = curticks;
    curticks = SDL_GetTicks();
    timescale = GLfloat(curticks-prevticks)/1000.0;

    //check rotation keys
    if (SDLevent.GetKey(SDLK_LEFT))
      rot += timescale*90;
    if (SDLevent.GetKey(SDLK_RIGHT))
      rot -= timescale*90;
    //check height change keys
    //piramid1 - use immediate recompile of displaylist method
    if (SDLevent.GetKey(SDLK_a))
      if (height1 < 6.0){
	height1 += timescale*1.5;
	updatelist(displaylists,height1);
      }
    if (SDLevent.GetKey(SDLK_z))
      if (height1 > 0.0){
	height1 -= timescale*1.5;
	updatelist(displaylists,height1);
      }
    //piramid2 - recompile only if needed with GL_COMPILE_AND_EXECUTE method
    if (SDLevent.GetKey(SDLK_s))
      if (height2 < 6.0){
	height2 += timescale*1.5;
	mod2 = TRUE;
      }
    if (SDLevent.GetKey(SDLK_x))
      if (height2 > 0.0){
	height2 -= timescale*1.5;
	mod2 = TRUE;
      }
    

    //main loop 2 - graphics
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    //we draw 2 piramids:

    //piramid 1: to the left
    glLoadIdentity();
    glTranslatef(-5.0,0.0,-20.0); 
    glRotatef(rot,0.0,1.0,0.0);
    //call the display list to draw the piramid rather than the procedure.
    glCallList(displaylists);

    //piramid 2: to the right
    glLoadIdentity();
    glTranslatef(5.0,0.0,-20.0); 
    glRotatef(-rot,0.0,1.0,0.0);
    //call the display list to draw the piramid rather than the procedure.
    if (mod2){
      //the height2 changed!
      glNewList(displaylists+1,GL_COMPILE_AND_EXECUTE);
      drawpiramid(height2);
      glEndList();
    }else{
      glCallList(displaylists+1);
    }

    
    SDL_GL_SwapBuffers();
  }


  SDL_Quit();
  return 0;
}
Example #5
0
int main()
{
  cout << "This is Tut6-compress example running" << endl;

  //Step 1 is to initialize SDL. Absolutely critical that your SDL application starts with this!
  if (SDL_Init(SDL_INIT_VIDEO) != 0){
    cout << "Error initializing SDL" << endl;
    return -1;
  }
  //Step 2 is to get a screen/window on which we can do some graphics.

  //create a Videoclass to control the video with
  SDLVideoclass SDLmain(640,480);
  
  if (SDLmain.InitVideo()){
    cout << "Video up and running" << endl;
  }else{
    cout << "Error initializing Video" << endl;
    return 0;
  }

  //some gl setup parameters
  glEnable(GL_DEPTH_TEST); //enable depth buffer
  glShadeModel(GL_SMOOTH); //use smooth shading mode.
  
  //setup camera:
  glMatrixMode(GL_PROJECTION);
  gluPerspective(45.0f,1.33,0.1f,100.0f);   //setup the camera
  glClearColor(0.0,0.0,0.1,0.0);  //the same color as the fog  (nice green toxic fog hey :)

  //from now on use the modelview matrix for manipulation!
  glMatrixMode(GL_MODELVIEW);

  glEnable(GL_TEXTURE_2D);

  //get the events up and running
  SDLEventclass SDLevent;

  //setup texture:
  Textureclass texture;
  //comment out this line to disable Mipmapping
  texture.Mipmap();
  //comment out this line if you like to disable texture compression
  texture.Compress();

  if (!texture.Load("sunset.bmp")){
    cout << "texture load error, halting" << endl;
    return -1;
  }
  texture.SetLinearFilter();
  texture.Activate(); //use this texture and this texture only!

  GLfloat rot=0;
  Uint32 curticks,prevticks;
  curticks = SDL_GetTicks();


  
  compress_setup();
  
  cout << "press ESC to quit" << endl;

  while (!SDLevent.MustQuit()){
    //events
    SDLevent.ProcessEvent();

    //calculate the rotation value
    prevticks = curticks;
    curticks = SDL_GetTicks();
    rot += 60*GLfloat(curticks-prevticks)/1000.0;
    //graphics
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glLoadIdentity();
    glTranslatef(0,0,-15);
    glRotatef(rot,0,1,0);
    Draw();
    SDL_GL_SwapBuffers();
  }

  return 0;
}