Graphics Programs
30
zDDA Line Drawing Algorithm #include<stdio.h> #include<conio.h> #include<graphics.h> #include<ctype.h> #include<math.h> #include<stdlib.h> void draw(int x1,int y1,int x2,int y2); void main() { int x1,y1,x2,y2; int gdriver=DETECT,gmode,gerror; initgraph(&gdriver,&gmode,”c:\\tc\\bgi:”); printf(“\n Enter the x and y value for starting point:\n”); scanf(“%d%d”,&x1,&y1); printf(“\n Enter the x and y value for ending point:\n”); scanf(“%d%d”,&x2,&y2); printf(“\n The Line is shown below: \n”); draw(x1,y1,x2,y2); getch(); }
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Transcript of Graphics Programs
DDA Line Drawing Algorithm
zDDA Line Drawing Algorithm
#include
#include
#include
#include
#include
#include
void draw(int x1,int y1,int x2,int y2);
void main()
{
int x1,y1,x2,y2;
int gdriver=DETECT,gmode,gerror;
initgraph(&gdriver,&gmode,c:\\tc\\bgi:);
printf(\n Enter the x and y value for starting point:\n);
scanf(%d%d,&x1,&y1);
printf(\n Enter the x and y value for ending point:\n);
scanf(%d%d,&x2,&y2);
printf(\n The Line is shown below: \n);
draw(x1,y1,x2,y2);
getch();
}
void draw(int x1,int y1,int x2,int y2)
{
float x,y,xinc,yinc,dx,dy;
int k;
int step;
dx=x2-x1;
dy=y2-y1;
if(abs(dx)>abs(dy))
step=abs(dx);
else
step=abs(dy);
xinc=dx/step;
yinc=dy/step;
x=x1;
y=y1;
putpixel(x,y,1);
for(k=1;k= startangle && thetax){if(dendangle){temp=startangle;startangle=endangle;endangle=temp;}MidPointcircle(xc,yc,radius);xstart=xc+radius*cos(PI/180*startangle);ystart=yc-radius*sin(PI/180*startangle);xend=xc+radius*cos(PI/180*endangle);yend=yc-radius*sin(PI/180*endangle);line(xc,yc,xstart,ystart);line(xc,yc,xend,yend);getch();break;case 3: printf("\n Enter the center:");scanf("%d %d",&xc,&yc);printf("\n Enter the radius:");scanf("%d",&radius);printf("\n Enter the startangle:");scanf("%f",&startangle);printf("\n Enter the endangle:");scanf("%f",&endangle);cleardevice();if(startangle>endangle){temp=startangle;startangle=endangle;endangle=temp;}MidPointcircle(xc,yc,radius);getch();break; case 4: closegraph();}}while(choice!=4);
}
Mid-Point Circle Algorithm
More HYPERLINK "http://i.thiyagaraaj.com/tutorials/computer-graphics/basic-drawing-techniques/-midpoint-circle-algorithm" Information
#include#include#include
void main(){
int gd=DETECT,gm;int x,y,r;voidDrawcircle(int,int,int);printf("Enter the Mid points and Radious:");scanf("%d%d%d",&x,&y,&r);initgraph(&gd,&gm,"");Drawcircle(x,y,r);getch();closegraph();
}void Drawcircle(int x1,int y1,int r){
int x=0,y=r,p=1-r;void cliplot(int,int,int,int);cliplot(x1,y1,x,y);while(x
