diyigepinbao.c

计算机图形学

#include "graphics.h"
#include "math.h"
#include "mem.h"

#define pi 3.1415926
typedef struct {
            int x;
            int y;
            int z;
            int color;
            } point1;
typedef struct {
            float x;
            float y;
            float z;
            int color;
            } point2;

void crossx(point1 *pot1,point1 *pot2,float n,float x)
{ int i;
  for(i=0;i<=n-1;i++)
  {  pot2[i].y= cos(x)*pot1[i].y-sin(x)*pot1[i].z;
     pot2[i].z= sin(x)*pot1[i].y+cos(x)*pot1[i].z;
     pot2[i].x=pot1[i].x;
     pot2[i].color=pot1[i].color;

   }

}
void crossy(point1 * pot1,point1 * pot2,float n,float x)
{ int i;
  for(i=0;i<=n-1;i++)
  {pot2[i].x=cos(x)* pot1[i].x+sin(x)*pot1[i].z;
   pot2[i].z=-sin(x)*pot1[i].x+cos(x)*pot1[i].z;
   pot2[i].y=pot1[i].y;
   pot2[i].color=pot1[i].color;
   }
}
void crossz(point1 * pot1,point1 * pot2,float n,float x)
{ int i;
  for(i=0;i<=n-1;i++)
   {pot2[i].x=(int)(cos(x)*pot1[i].x-sin(x)*pot1[i].y);
    pot2[i].y=(int)(sin(x)*pot1[i].x+cos(x)*pot1[i].y);
    pot2[i].z=pot1[i].z;
    pot2[i].color=pot1[i].color;
   }
}


generate1(float x,float y,float z,int m,int n,int color)
{

int i,j,t;point1 pot[2500],pot1[3009],pot2[2500],pot3[5000];
      for(i=0;i<=49;i++)
      for(j=0;j<=49;j++)
      {

          pot3[i*50+j].x=i-25;
          pot3[i*50+j].y=j-25;
          pot3[i*50+j].z=25;
          pot3[i*50+j].color=1;
      }


     for(i=0;i<=254;i++)
     {
          pot3[i+2499].x=i-120;
          pot3[i+2499].y=i-120;
          pot3[i+2499].z=25;
          pot3[i+2499].color=1;
      }

      for(i=0;i<=254;i++)
     {
          pot3[i+2755].x=-i+120;
          pot3[i+2755].y=i-120;
          pot3[i+2755].z=25;
          pot3[i+2755].color=1;
      }
      crossx(pot3,pot1,3009,x);
      crossy(pot1,pot1,3009,y);
      crossz(pot1,pot1,3009,z);

      for(i=0;i<=3009;i++)



      {
       putpixel( pot1[i].x+200+m,pot1[i].y+200+n,color);
      }


}


void main()
{
int driver=DETECT,mode;
float x=0,y=0,z=0; int m=0,n=0,a=5,b=5;
registerbgidriver(EGAVGA_driver);
initgraph(&driver,&mode,"\\tc");
initgraph(&driver,&mode,"\\tc");


while(!kbhit())

{ x+=pi/30;y+=pi/30;
         m+=a;n+=b;
  if(x==pi) {x=y=z=0; }
   if((m==435)&&(a==5))a=-5;
  if((m==-200)&&(a==-5))a=5;

  if((n==210)&&(b==5))b=-5;
  if((n==-180)&&(b==-5))b=5;

   generate1(x,y,z,m,n,4);
   delay(1000);
   generate1(x,y,z,m,n,0);}
   getch();

closegraph();
}