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Ko‘rinmas sirtlarni tanlash, Robеrts, z-bufеr, tartiblash, Appеl, -varnok algoritmlari Ishdan maqsad
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| bet | 5/6 | | Sana | 31.10.2023 | | Hajmi | 91.52 Kb. | | #91258 |
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#include
#include
#include
#include
#include
typedef float vek3[4];
typedef float vek8[9];
typedef float mat38[9][4];
typedef float mat28[9][3];
typedef int mat28i[9][3];
double alpha = 3.1415/4;
double l_kabine = 1/2.;
double d = 100;
vek3 z1;
mat38 kk3;
mat38 kk4;
mat28 kk2;
mat28i kk2i;
int ii,ff;
float ffi;
void initkub3( mat38 &k)
{
k[1][1]=0; k[1][2]=0; k[1][3]=0;
k[2][1]=d; k[2][2]=0; k[2][3]=0;
k[3][1]=0; k[3][2]=d; k[3][3]=0;
k[4][1]=0; k[4][2]=0; k[4][3]=d;
k[5][1]=d; k[5][2]=d; k[5][3]=0;
k[6][1]=0; k[6][2]=d; k[6][3]=d;
k[7][1]=d; k[7][2]=0; k[7][3]=d;
k[8][1]=d; k[8][2]=d; k[8][3]=d;
}
void kabine(mat38 m3, mat28 &m2)
{
int i;
for ( i=1; i<=8; i++)
{
m2[i][1] = m3[i][1] + l_kabine * sin(alpha) * m3[i][3];
m2[i][2] = m3[i][2] + l_kabine * cos(alpha) * m3[i][3];
}
}
void realtoint(mat28 m2, mat28i &m2i)
{
int i,j;
for(j=1; j<=8;j++)
for(i=1; i<=2;i++)
m2i[j][i]=int(m2[j][i]);
}
void lineside(vek3 z,mat38 k3,mat28i k2i,int n1,int n2,int n3,int n4)
{
if (((((k3[n3][2]-k3[n1][2])*(k3[n2][3]-k3[n1][3]))-
((k3[n3][3]-k3[n1][3])*(k3[n2][2]-k3[n1][2])))*z[1]-
(((k3[n3][1]-k3[n1][1])*(k3[n2][3]-k3[n1][3]))-
((k3[n2][1]-k3[n1][1])*(k3[n3][3]-k3[n1][3])))*z[2]+
(((k3[n3][1]-k3[n1][1])*(k3[n2][2]-k3[n1][2]))-
((k3[n2][1]-k3[n1][1])*(k3[n3][2]-k3[n1][2])))*z[3])<0 )
{
setcolor(15);
line(k2i[n1][1],k2i[n1][2],k2i[n2][1],k2i[n2][2]);
line(k2i[n2][1],k2i[n2][2],k2i[n3][1],k2i[n3][2]);
line(k2i[n3][1],k2i[n3][2],k2i[n4][1],k2i[n4][2]);
line(k2i[n4][1],k2i[n4][2],k2i[n1][1],k2i[n1][2]);
}
}
int main()
{ float ffi;
int gd=0,gm;
initgraph(&gd,&gm,"c:\\borlandc\\bgi");
z1[1]=l_kabine*sin(alpha);
z1[2]=l_kabine*cos(alpha);
z1[3]=-1;
initkub3(kk3);
for(ff=0;ff<=360;ff++)
{
for(ii=1;ii<=8;ii++)
{cleardevice();
ffi=ff*3.14/180.;
kk4[ii][1]=kk3[ii][1]+200;
kk4[ii][2]=cos(ffi)*kk3[ii][2]-sin(ffi)*kk3[ii][3]+200;
kk4[ii][3]=sin(ffi)*kk3[ii][2]+cos(ffi)*kk3[ii][3]+200;
kabine(kk4,kk2);
realtoint(kk2,kk2i);
lineside(z1,kk4,kk2i,1,2,5,3);
lineside(z1,kk4,kk2i,1,3,6,4);
lineside(z1,kk4,kk2i,1,4,7,2);
lineside(z1,kk4,kk2i,7,8,5,2);
lineside(z1,kk4,kk2i,5,8,6,3);
lineside(z1,kk4,kk2i,6,8,7,4);
delay(10);
}} getch();
return 0;}
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