https://github.com/wickdchromosome/flood_fill_png

Essentially the bucket fill tool from MS paint (recursive flood fill algorithm implementation)
https://github.com/wickdchromosome/flood_fill_png

c educational examples floodfill

Last synced: 26 days ago
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Essentially the bucket fill tool from MS paint (recursive flood fill algorithm implementation)

• Host: GitHub
• URL: https://github.com/wickdchromosome/flood_fill_png
• Owner: wickdChromosome
• Created: 2020-09-20T22:21:04.000Z (about 4 years ago)
• Default Branch: master
• Last Pushed: 2020-09-21T02:43:30.000Z (about 4 years ago)
• Last Synced: 2024-03-12T15:29:08.812Z (8 months ago)
• Topics: c, educational, examples, floodfill
• Language: C
• Homepage:
• Size: 31.3 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Simple recursive flood fill algorithm implementation

## What the algorithm looks like in action







## Introduction

This was made based on the wikipedia page on the flood fill algorithm: https://en.wikipedia.org/wiki/Flood_fill

## Compilation

If you have gcc and libpng-dev installed, you can compile the code by doing:

```

./compile.sh 

```

If you are on Debian, you can install libpng by doing:

```

sudo apt install libpng-dev

```

## Example

This is an implementation of the recursive version of the flood fill algorithm, so

it is only feasible for usage with smaller images. __test_img.png__ is a test file you can use.

For example, using the test image, you can do:

```

./flood_fill_png test_img.png 60 70 255 255 255 255 0 255 255 150 example_out.png

```

Which turns the test image from:







To:







## General usage

```

flood_fill_png            

```

Where:

 - *png_in* : Input png image

 - *x_root* : X coordinate to start filling from

 - *y_root* : Y coordinate to start filling from

 - *R* : Red value of target color to replace

 - *G* : Green value of target color to replace

 - *B* : Blue value of target color to replace

 - *A* : Transparency value of target color to replace

 - *R_target* : Red value to replace target color with

 - *G_target* : Green value to replace target color with

 - *B_target* : Blue value to replace target color with

 - *A_target* : Transparency value to replace target color with

 - *png_out* : Output file name