我的最爱

#include<graphics.h>

#include<math.h>

#define FNX(x1) (int)(x+(x1)*s)

#define FNY(y1) (int)(MAXY-(y+y1*s))

#define R(theta) 1-cos(theta)

int s=50,MAXY;

float x1,y1,xs,ys,r,theta;

void draw(int x,int y)

{ for(theta=0;theta<=2*3.1415;theta+=0.01)

{ r=R(theta);

x1=r*sin(theta);

y1=r*cos(theta);

xs=FNX(x1);

ys=FNY(y1);

if(theta==0)moveto(xs,ys);

else lineto(xs,ys);

}

}

main()

{ int gdriver=DETECT,gmode,i;

initgraph(&gdriver,&gmode,"");

setbkcolor(4);

setcolor(2);

MAXY=getmaxy();

draw(280,100);

draw(370,100);

floodfill(310,300,2);

setlinestyle(0,0,3);

for(i=0;i<=1;i++)

for(theta=0;theta<=30;theta+=0.01)

line(180+i,60,180+i+sin(theta)*6,495);

for(i=0;i<9;i++)

{ setlinestyle(0,0,3);

arc(160-5*i,100+50*i,0,150,20+5*i);

}

for(i=0;i<=4;i++)

{ setlinestyle(0,0,3);

arc(190+5*i,100+45*i,360,125,20+5*i);

}

for(i=5;i<=9;i++)

{ setlinestyle(0,0,3);

arc(180+5*i,100+45*i,360,125,20+5*i);

}

for(theta=0;theta<=30;theta+=0.01)

line(510+i,60,510+i+sin(theta)*6,495);

for(i=0;i<9;i++)

{ setlinestyle(0,0,3);

arc(500-5*i,100+50*i,0,150,20+5*i);

}

for(i=0;i<=2;i++)

{ setlinestyle(0,0,3);

arc(530+5*i,100+45*i,360,125,20+5*i);

}

for(i=3;i<=5;i++)

{ setlinestyle(0,0,3);

arc(523+5*i,100+45*i,360,125,20+5*i);

}

for(i=6;i<=9;i++)

{ setlinestyle(0,0,3);

arc(512+5*i,100+45*i,360,125,20+5*i);

}

getch();

closegraph();

}