Page 142 - DCAP313_LAB_ON_COMPUTER_GRAPHICS

Lab on Computer Graphics

Notes {
case ‘1’:
printf("
Enter Scaling Ratio:- ");
printf("
Sx:- ");
scanf("%f",&Sx);
printf(" Sy:- ");
scanf("%f",&Sy);
for(i=0;i<3;i++)
{
Matrix[i][0]=Matrix[i][0]*Sx;
Matrix[i][1]=Matrix[i][1]*Sy;
}
goto Menu;
case ‘2’:
printf(" Enter Translation [Relative]:- ");
printf(" Tx:- ");
scanf("%f",&Sx);
printf(" Ty:- ");
scanf("%f",&Sy);
Matrix[2][0]=Matrix[2][0]+Sx;
Matrix[2][1]=Matrix[2][1]+Sy;
goto Menu;
case ‘3’:
printf("
Enter Rotation Angle [Degree]:- ");
scanf("%f",&Sx);
Sx=(Sx*3.14)/180;
Cos=cos(Sx);
Sin=sin(Sx);
for(i=0;i<=2;i++)
{
temp=Matrix[i][0]*Cos–Matrix[i][1]*Sin;
Matrix[i][1]=Matrix[i][0]*Sin+Matrix[i][1]*Cos;
Matrix[i][0]=temp;
}
goto Menu;
case ‘4’:
Matrix[1][1]=Matrix[1][1]*–1;
printf("

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