fractal/pnmout.c

/*
 * fractal
 * Written in 2020 by Lucas
 * CC0 1.0 Universal/Public domain - No rights reserved
 *
 * To the extent possible under law, the author(s) have dedicated all
 * copyright and related and neighboring rights to this software to the
 * public domain worldwide. This software is distributed without any
 * warranty. You should have received a copy of the CC0 Public Domain
 * Dedication along with this software. If not, see
 * <http://creativecommons.org/publicdomain/zero/1.0/>.
 */
#include <stdio.h>
#include <stdlib.h>

#include "palette.h"
#include "pnmout.h"
#include "util.h"

void
pnmout_header(FILE *fp, unsigned int width, unsigned int height)
{
	if (fprintf(fp, "P6\n%u %u 255\n", width, height) < 0)
		err(1, "fprintf");
}

void
pnmout_pixel(FILE *fp, struct color c)
{
	uint8_t v[3];
	v[0] = c.r / 256;
	v[1] = c.g / 256;
	v[2] = c.b / 256;
	if (fwrite(v, sizeof(v[0]), sizeof(v) / sizeof(v[0]), fp) != 3)
		err(1, "fwrite");
}