snoopy/main.cpp

32 lines
759 B
C++
Raw Normal View History

2020-06-01 00:52:34 +02:00
#include <iostream>
const int WIDTH = 256;
const int HEIGHT = 256;
int main()
{
std::cout << "P3" << std::endl;
std::cout << WIDTH << ' ' << HEIGHT << "\n255\n";
for (int y = HEIGHT - 1; y >= 0; --y)
{
std::cerr << "\rScanlines remaining: " << y << ' ' << std::flush;
for (int x = 0; x < WIDTH; ++x)
{
double r = double(x) / (WIDTH - 1);
double g = double(y) / (HEIGHT - 1);
double b = 0.25;
int ir = static_cast<int>(255.999 * r);
int ig = static_cast<int>(255.999 * g);
int ib = static_cast<int>(255.999 * b);
std::cout << ir << ' ' << ig << ' ' << ib << std::endl;
}
}
std::cerr << "\nDone." << std::endl;
}