Page 153 - DCAP313_LAB_ON_COMPUTER_GRAPHICS

Unit 9: Translation

newy=y1-yoffset; Notes
move_object(x1,y1,x2,y2,newx,newy);
y1-=yoffset;
y2-=yoffset;
break;
caseALT_X:
caseESC:
caseCR:
closegraph();
exit(0);
}
}
}

9.1 2–Dimensional Translation in C program

Translation is an easy directly line movement of the object in x and y direction. Transformation
is refer to transform from one location to another location depends upon their transformation
it is classified the Scaling, Shearing, Reflection and Rotation see the source code in C coding.
Program
#include <stdio.h>
#include <stdlib.h>
#include<graphics.h>
#include<conio.h>
#include<math.h>
void draw2d(int,int [],int [],int,int);
void main()
{
int gd = DETECT, gm;
int x[20], y[20], tx=0, ty=0, i, fs;
initgraph(&gd, &gm,”“);
printf(“No of sides:”);
scanf(“%d”, &fs);
printf(“Co-ordinates :”);
for(i=0;i<fs;i++)
{
printf(“(x%d,y%d)”, i, i);
scanf(“%d%d”, &x[i], &y[i]);
}
draw2d(fs, x, y, tx, ty);
printf(“translation (x, y):”);
scanf(“%d%d”, &tx, &ty);

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