c语言圣诞树代码

#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include <windows.h>
#include <time.h>
#define PI 3.14159265359
char love[20][43] = {
	"111111111111111111111111111111111111111111",
	"111111111111110000111111100001000111111111",
	"110000000000000000011111100011000111111111",
	"110000111001110001111111000110001111111111",
	"111100010000110000111111100011000000000011",
	"111100001000100011111110000100011111100011",
	"100000000000000000001110000100011111000111",
	"100000000000000000011100000000110001000111",
	"100011100011111000110000000000110001111111",
	"111011100011111100111111000111110001111111",
	"111000000000000000111111000110000000001111",
	"111111000111111111111111000110000000000111",
	"111110001111111111111111000100010001000111",
	"111000000000000001111111000000010001100011",
	"111000000011000011111111000000110001100001",
	"110001110000000111111111000001110001110111",
	"100011111000011111111111000111110001111111",
	"111110000000000000011111000111000001111111",
	"111000000111110000011111000111000011111111",
	"111111111111111111111111111111111111111111"
};
 
void gotoxy(int x, int y)
{
	HANDLE hout = GetStdHandle(STD_OUTPUT_HANDLE);
	COORD pos = { x,y };
	SetConsoleCursorPosition(hout, pos);
}
 
void SetColor(int color) 
{
	if (color == 0)color = 0x04;
	HANDLE hCon = GetStdHandle(STD_OUTPUT_HANDLE);
	SetConsoleTextAttribute(hCon, color);
}
 
void showsnow()
{
	SetColor(rand() % 16);
	int x = rand() % 120;
	int y = rand() % 40;
	gotoxy(x, y);
	putchar('*');
}
 
float sx, sy;
float sdCircle(float px, float py, float r)
{
	float dx = px - sx, dy = py - sy;
	return sqrtf(dx * dx + dy * dy) - r;
}
float opUnion(float d1, float d2)
{
	return d1 < d2 ? d1 : d2;
}
#define T px+scale*r*cosf(theta),py+scale*r*sin(theta)
int ribbon()
{
	float x = (fmodf(sy, 0.1f) / 0.1f - 0.5f) * 0.5f;
	return sx >= x - 0.05f && sx <= x + 0.05f;
}
float f(float px, float py, float theta, float scale, int n)
{
	float d = 0.0f;
	for (float r = 0.0f; r < 0.8f; r += 0.02f)
		d = opUnion(d, sdCircle(T, 0.05f * scale * (0.95 - r)));
	if(n>0)
		for (int t = -1; t <= 1; t += 2)
		{
			float tt = theta + t * 1.8f;
			float ss = scale * 0.9f;
			for (float r = 0.2f; r < 0.8f; r += 0.1f)
			{
				d = opUnion(d, f(T, tt, ss * 0.5f, n - 1));
				ss *= 0.8f;
			}
		}
	return d;
}
 
int main(int argc, char* argv[])
{
	system("mode con cols=120 lines=42");
	srand((int)time(NULL));
	SetConsoleCP(437);
	SetConsoleOutputCP(437);
	int n = argc > 1 ? atoi(argv[1]) : 3;
	float zoom = argc > 2 ? atof(argv[2]) : 1.0f;
	for (sy = 0.8f; sy > 0.0f; sy -= 0.02f / zoom, putchar('
'))
	{
		for (sx = -0.35f; sx < 0.35f; sx += 0.01f / zoom)
		{
			if (f(0, 0, PI * 0.5f, 1.0f, n) < 0.0f)
			{
				if (sy < 0.1f)
				{
					SetColor(rand() % 16);
					putchar('3');
				}
				else {
					if (ribbon()) {
						putchar('=');
					}
					else {
						SetColor(rand() % 16);
						putchar('3');
					}
				}
			}
			else {
				putchar(' ');
			}
		}
	}
	
	int i, j;
	int x, y = 3;
	for (i = 0; i < 19; i++, y++)
	{
		x = 60;
		for (j = 0; j < 42; j++, x++)
		{
			gotoxy(x, y);
			if (love[i][j] == '1')
			{
				putchar(' ');
			}
			else {
				SetColor(0x06);
				putchar('*');
			}
		}
	}
	for (n = 0; n++ < 365;)
	{
		showsnow();
	}
	gotoxy(0, 40);
	getchar();
	return 0;
}