20201017-【C、C++】跳动的爱心

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;elseframe == 0 ? (shrink = false, extend = true) : --frame;}EndBatchDraw();closegraph();return 0;
}