Question

scan conversion of line code using parametric equations in computer graphics. code of c programming?​

Answer 1

Answer:

Code for Program to draw a line using Parametric equations in C++ Programming

# include <iostream.h>

# include <graphics.h>

# include <conio.h>

# include <math.h>

void show_screen( );

void parametric_line(constint,constint,constint,constint);

int main( )

{

int driver=VGA;

int mode=VGAHI;

int x_1=0;

int y_1=0;

int x_2=0;

int y_2=0;

do

{

show_screen( );

gotoxy(8,10);

cout<<"Coordinates of Point-I (x1,y1) :";

gotoxy(8,11);

cout<<"ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ";

gotoxy(12,13);

cout<<"Enter the value of x1 = ";

cin>>x_1;

gotoxy(12,14);

cout<<"Enter the value of y1 = ";

cin>>y_1;

gotoxy(8,18);

cout<<"Coordinates of Point-II (x2,y2) :";

gotoxy(8,19);

cout<<"ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ";

gotoxy(12,21);

cout<<"Enter the value of x2 = ";

cin>>x_2;

gotoxy(12,22);

cout<<"Enter the value of y2 = ";

cin>>y_2;

initgraph(&driver,&mode,"..\\Bgi");

setcolor(15);

parametric_line(x_1,y_1,x_2,y_2);

setcolor(15);

outtextxy(110,460,"Press <Enter> to continue or any other key to exit.");

int key=int(getch( ));

if(key!=13)

break;

}

while(1);

return 0;

}

/*************************************************************************///------------------------- parametric_line( ) ------------------------///*************************************************************************/void parametric_line(constint x_1,constint y_1,

constint x_2,constint y_2)

{

int color=getcolor( );

float x=x_1;

float y=y_1;

float u=0;

float dx=(x_2-x_1);

float dy=(y_2-y_1);

do

{

putpixel((int)(x+0.5),(int)(y+0.5),color);

u+=0.001;

x=(x_1+(u*dx));

y=(y_1+(u*dy));

}

while(u<=1);

}

/*************************************************************************///-------------------------- show_screen( ) ---------------------------///*************************************************************************/void show_screen( )

{

restorecrtmode( );

textmode(C4350);

cprintf("\n********************************************************************************");

cprintf("***************************- -****************************");

cprintf("*--------------------------- ");

textbackground(1);

cprintf(" Parametric Equation ");

textbackground(8);

cprintf(" ----------------------------*");

cprintf("*-*************************- -**************************-*");

cprintf("*-****************************************************************************-*");

for(int count=0;count<42;count++)

cprintf("*-* *-*");

gotoxy(1,46);

cprintf("*-****************************************************************************-*");

cprintf("*------------------------------------------------------------------------------*");

cprintf("********************************************************************************");

gotoxy(1,2)