20201017-【C、C++】跳动的爱心
#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;
}