c++控制台生成一张图片

直接上代码：

#include <fstream>
#include <iostream>
using namespace std;

int main()
{
	int ScreenSizeX = 200;
	int ScreenSizeY = 100;

	ofstream fout("OutputImage.ppm");
	fout << "P3\n" << ScreenSizeX << " " << ScreenSizeY << "\n255\n";
	cout << "开始渲染" << endl;
	for (int j = ScreenSizeY - 1; j >= 0; j--)
	{
		for (int i = 0; i < ScreenSizeX; i++)
		{
			int ir = int(255.99f * 1);
			int ig = int(255.99f * 1);
			int ib = int(255.99f * 0);

			fout << ir << " " << ig << " " << ib << "\n";
		}
	}
	cout << "渲染完毕" << endl;
	fout.close();

	return 0;
}

可以用Photoshop打开

还可以直接这样在上面画东西。

其实这就是个基于cpu的管线追踪渲染器了。