#ifndef COLOR_H
#define COLOR_H

#include <stdio.h>
#include <stdint.h>

#include "rtweekend.hpp"

/* Writes color components as a space-delimited string of numbers in the range [0,255] */
void write_color(FILE *fp, color c, uint32_t samples_per_pixel)
{
    float scale = 1.0 / samples_per_pixel;

    // Divide the color by the number of samples
    float r = sqrt(c.x * scale);
    float g = sqrt(c.y * scale);
    float b = sqrt(c.z * scale);

    /* Write output */
    fprintf(fp,
            "%d %d %d\n",
            (uint8_t) (255 * clamp(r, 0, 1)),
            (uint8_t) (255 * clamp(g, 0, 1)),
            (uint8_t) (255 * clamp(b, 0, 1)));
}

void write_image(color *image, uint64_t n, FILE *fp, uint32_t samples_per_pixel)
{
    for (int64_t i = n-1; i >= 0; --i)
    {
        write_color(fp, image[i], samples_per_pixel);
    }
}

#endif