graphics in linux

almon · 03-09-2008, 06:16 AM

Well what I have to do is to implement simple graphics algo.The algo which are used to draw basic figures (like line,circle,polygon) etc.
we have basic algo for drawing them ie bresharhams algo,dda algo.

In windows we simply include <graphics.h> file and do our work. but in linux how should do that?? I m unable to use commands like setpixel etc

anyone pls help

Simon Bridge · 03-09-2008, 06:26 AM

You've asked this before, in exactly the same words:
http://www.linuxquestions.org/questi...-linux-623949/
... in what way were the replies you received last time inadequate?

If you don't like the answers you get, refine the question. Repeating the exact same mistakes as before only tells us you are unwilling to learn or accept advise. Therefore, why should anyone try to help?

unSpawn · 03-09-2008, 07:02 AM

Other thread reported for move to /Programming and merge with this one. (Anyone can ask for that or closing duplicate threads using the report button)

SciYro · 03-09-2008, 07:15 AM

Install a graphics library. SDL sounds like it might be the best choice for you, it will allow you to access the raw graphics data so you can draw using whatever algorithm you want.

Simon Bridge · 03-09-2008, 08:29 AM

I think OP was put off the idea of having to write code to open a window to draw the graphics in. If so, then the ideal solution would be something that does this automagically - a-la OPs experiences with turbo-c++.

Can someone be reassuring on this point?
There are lots of libs - it must be bewildering.

gearoid_murphy · 03-09-2008, 10:20 AM

try using opengui : http://www.tutok.sk/fastgl/. Download the tarball and look in the examples directory for opening a window and drawing basic graphics. Its relatively simple.

almon · 03-09-2008, 11:13 AM

well I am ver much sorry that i repeated my question.actually I founded the programming related topics in this forum which i never saw b4 so i thought i may get better answers here...

SciYro · 03-09-2008, 04:23 PM

Simon Bridge: getting a window in SDL is simple enough, without checking for errors its only a few lines:

Code:

#include <SDL/SDL.h>

int
main (argc, argv)
  int argc;
  char** argv;
{
    SDL_Surface* window;
    SDL_Init (SDL_INIT_VIDEO | SDL_INIT_TIMMER);
    // 400x320 sized window, color depth of 32
    window = SDL_SetVideoMode (400, 320, 32, SDL_SWSURFACE);
    // place draw code here (window->pixels stores the pixel data you can alter)
    SDL_Flip (window); // call to update the window after drawing to it
    SDL_Delay (10000); // admire the window for 10 seconds
    return 0;
}

josedsilva · 05-16-2008, 11:55 AM

You could try using a graphics package like svgalib (http://svgalib.org)
It uses a cool library vgagl which has most of the pixel rendering function. svgalib will work in console mode (i.e. without starting X server).
If you want a still more simplified svgalib helper graphics package, you can mail me at josedsilva@yahoo.com
If you are looking for a graphics package under X, try SDL or Open GL, GLUT, etc.