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35 lines
799 B
C++
35 lines
799 B
C++
#ifndef COLOR_H
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#define COLOR_H
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#include "vec3.h"
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#include <algorithm>
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#include <iostream>
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#define GAMMA_CORRECT
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using color = vec3;
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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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#ifdef GAMMA_CORRECT
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if (r > 0) r = sqrt(r);
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if (g > 0) g = sqrt(g);
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if (b > 0) b = sqrt(b);
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#endif
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// Translate the [0,1] component values to the byte range [0,255].
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int rbyte = static_cast<int>(255.999 * std::clamp(r, 0.0, 1.0));
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int gbyte = static_cast<int>(255.999 * std::clamp(g, 0.0, 1.0));
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int bbyte = static_cast<int>(255.999 * std::clamp(b, 0.0, 1.0));
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// Write out the pixel color components.
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out << rbyte << ' ' << gbyte << ' ' << bbyte << '\n';
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}
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#endif
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