# alyyousuf7/Weaver

Weaving algorithm based on work by Petros Vrellis
Processing
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Frame.pde
Layer.pde
Lenna.jpg
Lenna_Black.jpg
Lenna_Blue.jpg
Lenna_Red.jpg
Lenna_Yellow.jpg
Line.pde
WeaveConfig.pde
Weaver.pde
ali.jpg
example.pde Sep 30, 2019

# Weaver

The idea is to take an image and come up with data to weave it using a single thread on a circular rim.

Basically this: A picture is worth a thousand words.

## Basic algorithm

This piece of software requires 3 inputs from the user:

• A picture to be drawn
• Total points/nails on a circular rim, `P`
• Total lines to be drawn, `L`

All three inputs are crucial on how the final result is going to look. The program does the following:

1. Converts the color picture to grayscale.
2. The picture is then cropped to a square.
3. Places a virtual circular rim with `P` equidistant points on it.
4. Takes the first point (`p = 0`) as the starting point.
5. Finds the next point `p'` to draw a line from point `p` by finding the highest intensity line.
• The intensity of a line is calculated by adding up the all the pixel values of a line from `p` to `p'`.
6. A new line is drawn from `p` to `p'` on the circular rim.
7. The original image is modified such that the pixels under the line from `p` to `p'` are lightened* so that the same line is not drawn next time.
8. `p'` is set as the new starting point `p` and then the steps from `5` is repeated until `L` lines are drawn.

* The amount by which a line should be lightened can also be configured.

## How to run?

• You'll need to download Processing. It's available for Windows / Mac / Linux.
• Open up `Weaver.pde` using Processing.
• Hit `Run` or press `CTRL+R` to execute the application.
• Click anywhere on the application to start processing.
• Click again to pause.
• After the process is complete, a text file will be generated. This file contains the positions of each point where the thread should be knitted next.

Note: Those of you who are downloading the repository as .zip file, you must rename the folder `Weaver-master` to `Weaver` before opening on Processing.

## Configuration

The `setup()` function in `Weaver.pde` chooses one of the example configurations. Check the `example.pde` to modify the configuration of each example.

## Credits

Kudos to i-make-robots for originally writting this algorithm.

I changed it a little bit to clean up the code, improve GUI and add some extra features.

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