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pnm.h
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pnm.h
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/**
* tdpw - Two Dimensional Physics Workbench
* Copyright (C) Iain R. Learmonth 2012-2014.
*
* 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; either version 2 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 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
enum Pictype {unknown, bw, gray, colour};
struct pic
{
int width, height;
Pictype type;
unsigned int **data;
};
typedef struct pic Pic;
/* use int as R<<24 + G<<16 + B<<8 + black;
*/
unsigned int red (unsigned int x);
unsigned int green(unsigned int x);
unsigned int blue (unsigned int x);
Pic makenewpic (int w, int h);
void writepnm(Pic p, const char * dest);