Rotation of line in c Or c++

Replies

• 

  gaurav.bhorkar

  Can you post the code you've tried so far?
  
  Here's my suggestion,
  Fix one end of the line and then change the coordinates of the other end appropriately.
• 

  optimystix

  what is the problem ? just substitute the corresponding values for 90 degree in the rotational transformation matrix and solve it.
  where are u facing the problem ? share with us so that we can help.
• 

  Manish Goyal

  Try bresenham algorithm
  change the coordinates of line accordingly
• 

  sumit_goel

  Hello friends
  first of all i would like to thanks to all for giving response to my problem. Actually i made a table fan in c++ and i want to rotate the fan. but for this first of all i should know how to rotate the line. then i can proceed to make rotation of fan.In the above problem i simply want to ask how to rotate the line at 90 degree.I am beginner of graphics programs in c++. and also Can anyone tell me from which site i can learn simple graphics programs in c++.
• 

  Manish Goyal

  Try this program but i have not execute this .
  It will draw a line
  Now for rotating it change its co-ordinates accordingly
  

  #include  
  #include  
  #include 
  
  void main(void)
  {
      int   driver = DETECT,mode;
      
      int   x=180,y=180;
  
      initgraph(&driver,&mode,"c:\\tc\\bgi");
      
      for(;;)
  {
      
        line(360,360,x,y);
          
          
  }
      getch();          
      closegraph();
  }