dbc223eb84
Import existing source tree; original VCS history is no longer available. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
/*(LGPL)
|
|
----------------------------------------------------------------------
|
|
region.h - Graphics Engine
|
|
----------------------------------------------------------------------
|
|
* Copyright (C) 2007 David Olofson
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation; either version 2.1 of the License, or (at
|
|
* your option) any later version.
|
|
*
|
|
* 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#ifndef KOBO_REGION_H
|
|
#define KOBO_REGION_H
|
|
|
|
#include "glSDL.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*
|
|
* Region
|
|
* Describes an area as a number of pixel spaced rows,
|
|
* each containing zero or more spans on the form <start, end>.
|
|
*/
|
|
typedef struct RGN_region
|
|
{
|
|
int rows;
|
|
Uint16 **spans;
|
|
} RGN_region;
|
|
|
|
/* Construct region by scanning an SDL surface */
|
|
RGN_region *RGN_ScanMask(SDL_Surface *src, Uint32 key);
|
|
|
|
/* Free a region */
|
|
void RGN_FreeRegion(RGN_region *rgn);
|
|
|
|
/* Set target for region rendering */
|
|
void RGN_Target(SDL_Surface *tgt);
|
|
|
|
/* Select and position region for subsequent operations */
|
|
void RGN_SetRegion(RGN_region *rgn, int xpos, int ypos);
|
|
|
|
/* Blit to region! */
|
|
int RGN_Blit(SDL_Surface *src, SDL_Rect *sr, int x, int y);
|
|
|
|
#ifdef __cplusplus
|
|
};
|
|
#endif
|
|
|
|
#endif /* KOBO_REGION_H */
|