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Practical 6

This document discusses using a boundary fill algorithm to fill a polygon shape on a graph. It includes code to initialize graphics mode, draw a circle, and recursively call a boundaryFill4 function to change all pixels within the circle boundary to a fill color, leaving the boundary color unchanged. The main function initializes graphics, draws a circle, calls boundaryFill4 to fill it, waits, and ends the program.

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Shiv suryawanshi
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139 views1 page

Practical 6

This document discusses using a boundary fill algorithm to fill a polygon shape on a graph. It includes code to initialize graphics mode, draw a circle, and recursively call a boundaryFill4 function to change all pixels within the circle boundary to a fill color, leaving the boundary color unchanged. The main function initializes graphics, draws a circle, calls boundaryFill4 to fill it, waits, and ends the program.

Uploaded by

Shiv suryawanshi
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Practical 6:Fill Polygon using boundary fill method

#include <graphics.h>
#include<stdio.h>
#include<conio.h>
void boundaryFill4(int x, int y, int fill_color,int boundary_color)
{
if(getpixel(x, y) != boundary_color &&
getpixel(x, y) != fill_color)
{
putpixel(x, y, fill_color);
boundaryFill4(x + 1, y, fill_color, boundary_color);
boundaryFill4(x, y + 1, fill_color, boundary_color);
boundaryFill4(x - 1, y, fill_color, boundary_color);
boundaryFill4(x, y - 1, fill_color, boundary_color);
}
}
int main()
{
int gd = DETECT, gm;
initgraph(&gd, &gm, "");
int x = 250, y = 200, radius = 50;
circle(x, y, radius);
boundaryFill4(x, y, 6, 15);
delay(10000);
getch();
closegraph();
return 0;
}
Output:

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