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20201017-【C、C++】跳动的爱心

article 2024/10/18 17:17:24

效果图片

在这里插入图片描述

代码

#include "graphics.h"
#include <conio.h>
#include <time.h>
#include <math.h>
#include <stdlib.h>

struct Point {
	double x, y;
	COLORREF color;
};

COLORREF colors[256] = {
	RGB(255,32,83),
	RGB(252,222,250),
	RGB(255,0,0),
	RGB(255,0,0),
	RGB(255,2,2),
	RGB(255,0,8),
	RGB(255,5,5),
};

const int xScreen = 1200;
const int yScreen = 800;
const double PI = 3.1426535159;
const double e = 2.71828;
const double averag_distance = 0.162;
const int quantity = 506;
const int circles = 210;
const int frames = 20;
Point origin_points[quantity];
Point points[circles * quantity];
IMAGE images[frames];
double screen_x(double x) {
	x += xScreen / 2;
	return x;
}
double screen_y(double y) {
	y = -y + yScreen / 2;
	return y;
}

int creat_random(int x1, int x2) {
	if (x2 > x1)
		return rand() % (x2 - x1 + 1) + x1;
}
void creat_data()
{
	int index = 0;
	double x1 = 0, y1 = 0, x2 = 0, y2 = 0;
	for (double radian = 0.1; radian <= 2 * PI; radian += 0.005)
	{
		x2 = 16 * pow(sin(radian), 3);
		y2 = 13 * cos(radian) - 5 * cos(2 * radian) - 2 * cos(3 * radian) - cos(4 * radian);
		double distance = sqrt(pow(x2 - x1, 2) + pow(y2 - y1, 2));
		if (distance > averag_distance) {

			x1 = x2, y1 = y2;
			origin_points[index].x = x2;
			origin_points[index++].y = y2;
		}
	}
	index = 0;
	for (double size = 0.l, lightness = 1.5; size <= 20; size += 0.1)
	{
		double success_p = 1 / (1 + pow(e, 8 - size / 2));
		if (lightness > 1)
			lightness -= 0.0025;
		for (int i = 0; i < quantity; ++i)
		{
			if (success_p > creat_random(0, 100) / 100.0)
			{
				COLORREF color = colors[creat_random(0, 6)];
				points[index].color = RGB(GetRValue(color) / lightness, GetGValue(color) / lightness, GetBValue(color) / lightness);
				points[index].x = size * origin_points[i].x + creat_random(-4, 4);
				points[index++].y = size * origin_points[i].y + creat_random(-4, 4);
			}
		}
	}
	int points_size = index;
	for (int frame = 0; frame < frames; ++frame)
	{
		images[frame] = IMAGE(xScreen, yScreen);
		SetWorkingImage(&images[frame]);
		for (index = 0; index < points_size; ++index)
		{
			double x = points[index].x, y = points[index].y;
			double distance = sqrt(pow(x, 2) + pow(y, 2));
			double diatance_increase = -0.0009 * distance * distance + 0.35714 * distance + 5;
			double x_increase = diatance_increase * x / distance / frames;
			double y_increase = diatance_increase * y / distance / frames;
			points[index].x += x_increase;
			points[index].y += y_increase;
			setfillcolor(points[index].color);
			solidcircle(screen_x(points[index].x), screen_y(points[index].y), 1);
		}
		for (double size = 17; size < 23; size += 0.3)
		{
			for (index = 0; index < quantity; ++index)
			{
				if ((creat_random(0, 100) / 100.0 > 0.6 && size >= 20) || (size < 20 && creat_random(0, 100) / 100.0>0.95))
				{

					double x, y;
					if (size >= 20)
					{
						x = origin_points[index].x * size + creat_random(-frame * frame / 5 - 15, frame * frame / 5 + 15);
						y = origin_points[index].y * size + creat_random(-frame * frame / 5 - 15, frame * frame / 5 + 15);
					}
					else
					{
						x = origin_points[index].x * size + creat_random(-5, 5);
						y = origin_points[index].y * size + creat_random(-5, 5);
					}
					setfillcolor(colors[creat_random(0, 6)]);
					solidcircle(screen_x(x), screen_y(y), 1);
				}
			}
		}
	}

	SetWorkingImage();
}
int main()
{
	initgraph(xScreen, yScreen);
	BeginBatchDraw();
	srand(time(0));
	creat_data();
	bool extend = true, shrink = false;
	for (int frame = 0; !_kbhit();)
	{
		putimage(0, 0, &images[frame]);
		FlushBatchDraw();
		Sleep(20);
		cleardevice();
		if (extend)
			frame == 19 ? (shrink = true, extend = false) : ++frame;
		else
			frame == 0 ? (shrink = false, extend = true) : --frame;
	}
	EndBatchDraw();
	closegraph();
	return 0;
}