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38 lines
782 B
C++
38 lines
782 B
C++
#ifndef COLOR_H
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#define COLOR_H
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#include "interval.h"
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#include "vec3.h"
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#include <iostream>
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using color = vec3;
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inline double linear_to_gamma(double linear_component)
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{
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if (linear_component > 0)
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return std::sqrt(linear_component);
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return 0;
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}
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inline void write_color(std::ostream& out, const color& pixel_color) {
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auto r = pixel_color.x();
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auto g = pixel_color.y();
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auto b = pixel_color.z();
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r = linear_to_gamma(r);
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g = linear_to_gamma(g);
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b = linear_to_gamma(b);
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static const interval intensity(0.000, 0.999);
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int rbyte = int(256 * intensity.clamp(r));
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int gbyte = int(256 * intensity.clamp(g));
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int bbyte = int(256 * intensity.clamp(b));
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out << rbyte << ' ' << gbyte << ' ' << bbyte << '\n';
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}
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#endif
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