3D Transformations, Translation, Rotation, Scaling

The Below program are for 3D Transformations. This is a part of Mumbai University MCA Colleges Computer Graphics CG MCA Sem 2

3D Translation:

#include<stdio.h>

#include<conio.h>

#include<graphics.h>

#include<math.h>

int maxx,maxy,midx,midy;

void axis()

{

getch();

cleardevice();

line(midx,0,midx,maxy);

line(0,midy,maxx,midy);

}

void main()

{

int x,y,z,o,x1,x2,y1,y2;

int gd=DETECT,gm;

detectgraph(&gd,&gm);

initgraph(&gd,&gm,"c:\\tc\\bgi");

//setfillstyle(0,getmaxcolor());

maxx=getmaxx();

maxy=getmaxy();

midx=maxx/2;

midy=maxy/2;

axis();

bar3d(midx+50,midy-100,midx+60,midy-90,10,1);

printf("Enter translation factor");

scanf("%d%d",&x,&y);

//axis();

printf("After translation:");

bar3d(midx+x+50,midy-(y+100),midx+x+60,midy-(y+90),10,1);

getch();

closegraph();

}

3D Scaling:

#include<stdio.h>

#include<conio.h>

#include<graphics.h>

#include<math.h>

int maxx,maxy,midx,midy;

void axis()

{

getch();

cleardevice();

line(midx,0,midx,maxy);

line(0,midy,maxx,midy);

}

void main()

{

int x,y,z,o,x1,x2,y1,y2;

int gd=DETECT,gm;

detectgraph(&gd,&gm);

initgraph(&gd,&gm,"c:\\tc\\bgi");

//setfillstyle(0,getmaxcolor());

maxx=getmaxx();

maxy=getmaxy();

midx=maxx/2;

midy=maxy/2;

axis();

bar3d(midx+50,midy-100,midx+60,midy-90,5,1);

printf("Enter scaling factors");

scanf("%d%d%d", &x,&y,&z);

//axis();

printf("After scaling");

bar3d(midx+(x*50),midy-(y*100),midx+(x*60),midy-(y*90),5*z,1);

//axis();

getch();

closegraph();

}

3D Rotation:

#include<stdio.h>

#include<conio.h>

#include<graphics.h>

#include<math.h>

int maxx,maxy,midx,midy;

void axis()

{

getch();

cleardevice();

line(midx,0,midx,maxy);

line(0,midy,maxx,midy);

}

void main()

{

int x,y,z,o,x1,x2,y1,y2;

int gd=DETECT,gm;

detectgraph(&gd,&gm);

initgraph(&gd,&gm,"c:\\tc\\bgi");

//setfillstyle(0,getmaxcolor());

maxx=getmaxx();

maxy=getmaxy();

midx=maxx/2;

midy=maxy/2;

axis();

bar3d(midx+50,midy-100,midx+60,midy-90,5,1);

printf("Enter rotating angle");

scanf("%d",&o);

 x1=50*cos(o*3.14/180)-100*sin(o*3.14/180);

 y1=50*sin(o*3.14/180)+100*cos(o*3.14/180);

 x2=60*cos(o*3.14/180)-90*sin(o*3.14/180);

 y2=60*sin(o*3.14/180)+90*cos(o*3.14/180);

 axis();

printf("After rotation about z axis");

bar3d(midx+x1,midy-y1,midx+x2,midy-y2,5,1);

axis();

printf("After rotation  about x axis");

bar3d(midx+50,midy-x1,midx+60,midy-x2,5,1);

axis();

printf("After rotation about yaxis");

bar3d(midx+x1,midy-100,midx+x2,midy-90,5,1);

getch();

closegraph();

}

Hope this Program is useful to you in some sense or other. Keep on following this blog for more Mumbai University MCA College Programs. Happy Programming and Studying.