intern_video.h

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//       _________ __                 __
//      /   _____//  |_____________ _/  |______     ____  __ __  ______
//      \_____  \\   __\_  __ \__  \\   __\__  \   / ___\|  |  \/  ___/
//      /        \|  |  |  | \// __ \|  |  / __ \_/ /_/  >  |  /\___ |
//     /_______  /|__|  |__|  (____  /__| (____  /\___  /|____//____  >
//             \/                  \/          \//_____/            \/
//  ______________________      ______________________
//   T H E   W A R   B E G I N S
//    Stratagus - A free fantasy real time strategy game engine
//
//*@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
----------------------------------------------------------------------------*/
 
#include "SDL.h"
#include <vector>
 
/*----------------------------------------------------------------------------
-- Declarations
----------------------------------------------------------------------------*/
 
class ColorIndexRange
{
public:
        ColorIndexRange(unsigned int begin, unsigned int end) :
                begin(begin), end(end)
        {}
public:
        unsigned int begin;
        unsigned int end;
};
 
// Do one cycle
extern void ColorCycleSurface(SDL_Surface &surface);
extern void LazilyMakeColorCyclingTextures(CGraphic *g, std::vector<ColorIndexRange> ranges);
extern void MakeColorCyclingTextures(CGraphic *g, int count);
 
/*----------------------------------------------------------------------------
-- 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) do { \
                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; \
                } \
        } while(0)
 
#define CLIP_RECTANGLE_OFS(x, y, width, height, ofsx, ofsy, endx) do { \
                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; \
                } \
        } while(0)
 
 
/*----------------------------------------------------------------------------
-- Functions
----------------------------------------------------------------------------*/
 
 
 
#endif // !__INTERN_VIDEO_H__