____                _       __
    / __ )____  _____   | |     / /___ ___________
   / __  / __ \/ ___/   | | /| / / __ `/ ___/ ___/
  / /_/ / /_/ (__  )    | |/ |/ / /_/ / /  (__  )
 /_____/\____/____/     |__/|__/\__,_/_/  /____/

       A futuristic real-time strategy game.
          This file is part of Bos Wars.

(C) Copyright 2001-2007 by the Bos Wars and Stratagus Project. Distributed under the "GNU General Public License"

---

intern_video.h

Go to the documentation of this file.

//     ____                _       __               
//    / __ )____  _____   | |     / /___ ___________
//   / __  / __ \/ ___/   | | /| / / __ `/ ___/ ___/
//  / /_/ / /_/ (__  )    | |/ |/ / /_/ / /  (__  ) 
// /_____/\____/____/     |__/|__/\__,_/_/  /____/  
//                                              
//       A futuristic real-time strategy game.
//          This file is part of Bos Wars.
//
//*@file intern_video.h @brief The video headerfile for video sources only. */
//
// (c) Copyright 1999-2002 by Stephan Rasenbergver.
//
//      This program is free software; you can redistribute it and/or modify
//      it under the terms of the GNU General Public License as published by
//      the Free Software Foundation; only version 2 of the License.
//
//      This program is distributed in the hope that it will be useful,
//      but WITHOUT ANY WARRANTY; without even the implied warranty of
//      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//      GNU General Public License for more details.
//
//      You should have received a copy of the GNU General Public License
//      along with this program; if not, write to the Free Software
//      Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
//      02111-1307, USA.
//

#ifndef __INTERN_VIDEO_H__
#define __INTERN_VIDEO_H__


/*----------------------------------------------------------------------------
-- Documentation
----------------------------------------------------------------------------*/

/*----------------------------------------------------------------------------
-- Includes
----------------------------------------------------------------------------*/


/*----------------------------------------------------------------------------
-- Declarations
----------------------------------------------------------------------------*/


/*----------------------------------------------------------------------------
-- Variables
----------------------------------------------------------------------------*/

    // Direct acces to clipping rectangle for macro CLIP_RECTANGLE
extern int ClipX1; 
extern int ClipY1; 
extern int ClipX2; 
extern int ClipY2; 

/*----------------------------------------------------------------------------
-- Macros
----------------------------------------------------------------------------*/

#define CLIP_RECTANGLE(x, y, width, height) { \
    int f; \
    if (x < ClipX1) { \
        f = ClipX1 - x; \
        if (width <= f) { \
            return; \
        } \
        width -= f; \
        x = ClipX1; \
    } \
    if ((x + width) > ClipX2 + 1) { \
        if (x > ClipX2) { \
            return; \
        } \
        width = ClipX2 - x + 1; \
    } \
    if (y < ClipY1) { \
        f = ClipY1 - y; \
        if (height <= f) { \
            return; \
        } \
        height -= f; \
        y = ClipY1; \
    } \
    if ((y + height) > ClipY2 + 1) { \
        if (y > ClipY2) { \
            return; \
        } \
        height = ClipY2 - y + 1; \
    } \
}

#define CLIP_RECTANGLE_OFS(x, y, width, height, ofsx, ofsy, endx) { \
    if (y < ClipY1) { \
        ofsy = ClipY1 - y; \
        if (height <= ofsy) { \
            return; \
        } \
        height -= ofsy; \
        y = ClipY1; \
    } else { \
        ofsy = 0; \
    } \
    if ((y + height) > ClipY2 + 1) { \
        if (y > ClipY2) { \
            return; \
        } \
        height = ClipY2 - y + 1; \
    } \
    if (x < ClipX1) { \
        ofsx = ClipX1 - x; \
        if (width <= ofsx) { \
            return; \
        } \
        width -= ofsx; \
        x = ClipX1; \
    } else { \
        ofsx = 0; \
    } \
    if ((x + width) > ClipX2 + 1) { \
        if (x > ClipX2) { \
            return; \
        } \
        endx = (x + width) - (ClipX2 + 1); \
        width = ClipX2 - x + 1; \
    } else { \
        endx = 0; \
    } \
}


/*----------------------------------------------------------------------------
-- Functions
----------------------------------------------------------------------------*/



#endif // !__INTERN_VIDEO_H__

---