134.沙丘图案

  

   

    

     

    
    

     

      /* Sandhill */
     
    
   

    

     

    
    

     

      #include <graphics.h>
     
    
   

    

     

    
    

     

      #include <math.h>
     
    
   

    

     

    
    

     

      #define PI 3.1415926
     
    
   

    

     

    
    

     

      void main()
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     
	double a,b,c;
     
    
   

    

     

    
    

     
	int x,y,py;
     
    
   

    

     

    
    

     
	int gdriver=DETECT,gmode;
     
    
   

    

     

    
    

     
	initgraph(&gdriver,&gmode,"c:\\tc");
     
    
   

    

     

    
    

     
	cleardevice();
     
    
   

    

     

    
    

     
	setbkcolor(9);
     
    
   

    

     

    
    

     
	setcolor(14);
     
    
   

    

     

    
    

     
	outtextxy(80,3,"This program show the Sandhill picture.");
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
	for(py=20;py<=380;py+=3)
     
    
   

    

     

    
    

     

      	{
     
    
   

    

     

    
    

     

      		c=(py-20)*4*PI/360;
     
    
   

    

     

    
    

     

      		b=PI*cos(c);
     
    
   

    

     

    
    

     
		for(a=0;a<=6*PI;a+=PI/7)
     
    
   

    

     

    
    

     

      		{
     
    
   

    

     

    
    

     

      			x=600/(6*PI)*a+20;
     
    
   

    

     

    
    

     

      			y=10*sin(a+cos(a)*PI-b)*cos(c)+py;
     
    
   

    

     

    
    

     
			if(a==0)
     
    
   

    

     

    
    

     
				moveto(x,y);
     
    
   

    

     

    
    

     
			else
     
    
   

    

     

    
    

     
				lineto(x,y);
     
    
   

    

     

    
    

     

      		}
     
    
   

    

     

    
    

     

      	}
     
    
   

    

     

    
    

     
	outtextxy(80,460,"Press any key to quit...");
     
    
   

    

     

    
    

     
	getch();
     
    
   

    

     

    
    

     
	closegraph();
     
    
   

    

     

    
    

     

      }
     
    
  
 

文章来源: blog.csdn.net，作者：程序员编程指南，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/weixin_41055260/article/details/124665171