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| #include <graphics.h>
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
#include <math.h>
int x0=340,y0=220,x,y,xt,yt,xxt,yyt,xx,yy,k;
float fi=0,s;
int pyr[8][3],
v[8][3]={{240,320,1},{240,160,1},{400,160,1},{400,320,1},{280,280,1},{280,120,1},{440,120,1},{440,280,1}};
float tmp[8][3];
float r[8][3],tt[8][3];
int t[8][3];
int rect[8];
void recta(int i,int j,int k,int l)
{rect[0]=pyr[i][0];
rect[1]=pyr[i][1];
rect[2]=pyr[j][0];
rect[3]=pyr[j][1];
rect[4]=pyr[k][0];
rect[5]=pyr[k][1];
rect[6]=pyr[l][0];
rect[7]=pyr[l][1];
}
void draw(void)
{moveto(pyr[0][0],pyr[0][1]);
lineto(pyr[1][0],pyr[1][1]);
lineto(pyr[2][0],pyr[2][1]);
lineto(pyr[3][0],pyr[3][1]);
lineto(pyr[0][0],pyr[0][1]);
lineto(pyr[4][0],pyr[4][1]);
lineto(pyr[5][0],pyr[5][1]);
lineto(pyr[6][0],pyr[6][1]);
lineto(pyr[7][0],pyr[7][1]);
lineto(pyr[4][0],pyr[4][1]);
moveto(pyr[1][0],pyr[1][1]);
lineto(pyr[5][0],pyr[5][1]);
moveto(pyr[2][0],pyr[2][1]);
lineto(pyr[6][0],pyr[6][1]);
moveto(pyr[3][0],pyr[3][1]);
lineto(pyr[7][0],pyr[7][1]);
//raskraska
setfillstyle(2,11);
recta(0,1,2,3);
fillpoly(4,rect);
setfillstyle(5,11);
recta(1,5,6,2);
fillpoly(4,rect);
setfillstyle(4,11);
recta(2,6,7,3);
fillpoly(4,rect);
}
void matrix_r(float fi)
{r[0][0]=cos(fi);
r[0][1]=sin(fi);
r[0][2]=0;
r[1][0]=-sin(fi);
r[1][1]=cos(fi);
r[1][2]=0;
r[2][0]=0;
r[2][1]=0;
r[2][2]=1;
}
void matrix_t(int x,int y)
{int i,j;
for(i=0;i<=2;i++)
for(j=0;j<=2;j++)
if (i==j) t[i][j]=1;
else t[i][j]=0;
t[2][0]=x;
t[2][1]=y;
}
void main(void)
{int gdriver = DETECT, gmode, errorcode,i,j,c;
char msg[80];
initgraph(&gdriver,&gmode,"");
errorcode=graphresult();
if (errorcode !=grOk)
{printf("Graphics error:%s\n",grapherrormsg(errorcode));
printf("Press any key to halt:");
getch();exit(1);
}
settextstyle(0,HORIZ_DIR,2);
setcolor(4);
outtextxy(10,445,"\x01a \x01b esc ");
setcolor(11);
settextstyle(1,HORIZ_DIR,4);
outtextxy(10,430,"-right -left -end");
setviewport(50,50,getmaxx()-50,getmaxx()-50,1);
for(i=0;i<=7;i++)
for(k=0;k<=2;k++)
pyr[i][k]=v[i][k];
draw();
do
{c=getch();
switch(c)
{case 77: fi-=0.15;
break;
case 75: fi+=0.15;
break;
}
matrix_r(fi);
matrix_t(-x0,-y0);
for(i=0;i<=2;i++)
for(k=0;k<=2;k++)
{s=0;
for(j=0;j<=2;j++)
s=s+t[i][j]*r[k][j];
tt[i][k]=s;}
for(i=0;i<=7;i++)
for(k=0;k<=2;k++)
{s=0;
for(j=0;j<=2;j++)
s=s+v[i][j]*tt[j][k];
tmp[i][k]=s;}
matrix_t(x0,y0);
for(i=0;i<=7;i++)
for(k=0;k<=2;k++)
{s=0;
for(j=0;j<=2;j++)
s=s+tmp[i][j]*t[j][k];
pyr[i][k]=s;}
clearviewport();
//stiranie okna
draw();
}while(c!=27);
closegraph();
} |
