film.h

#ifndef __FILM_H__
#define __FILM_H__

#include "grid.h"
#include <algorithm>

typedef unsigned int Pixel;

inline Pixel Pixel_Color(const vec3& color)
{
    unsigned int r=std::min(color[0],1.0)*255;
    unsigned int g=std::min(color[1],1.0)*255;
    unsigned int b=std::min(color[2],1.0)*255;
    return (r<<24)|(g<<16)|(b<<8)|0xff;
}

inline vec3 From_Pixel(Pixel color)
{
    return vec3(color>>24,(color>>16)&0xff,(color>>8)&0xff)/255.;
}

class Film
{
public:
    Pixel* colors;
    double width,height;
    Grid pixel_grid;

    Film()
        :colors(0),width(0),height(0)
    {
    }

    ~Film();

    void Set_Resolution(const int pixels_width,const int pixels_height);

    void Set_Pixel(const ivec2& pixel_index,const Pixel& color)
    {
        int i=pixel_index[0];
        int j=pixel_index[1];
        colors[j*pixel_grid.size[0]+i]=color;
    }

};
#endif