36 lines
812 B
C++
36 lines
812 B
C++
#include <limits>
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#include <cmath>
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#include <iostream>
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#include <fstream>
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#include <vector>
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#include "geometry.h"
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void render() {
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const int width = 1024;
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const int height = 768;
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std::vector<Vec3f> framebuffer(width*height);
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for (size_t j = 0; j<height; j++) {
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for (size_t i = 0; i<width; i++) {
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framebuffer[i+j*width] = Vec3f(j/float(height),i/float(width), 0);
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}
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}
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std::ofstream ofs; // save the framebuffer to file
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ofs.open("./out.ppm");
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ofs << "P6\n" << width << " " << height << "\n255\n";
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for (size_t i = 0; i < height*width; ++i) {
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for (size_t j = 0; j<3; j++) {
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ofs << (char)(255 * std::max(0.f, std::min(1.f, framebuffer[i][j])));
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}
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}
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ofs.close();
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}
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int main() {
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render();
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return 0;
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}
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