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时间:2009-12-22 15:42来源:未知 作者:admin 点击:
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#include #include #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 { r=R(theta); x1=r*sin(theta); y1=r*co

  

#include

  #include

  #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();

   }

  

  

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