2.5 KiB

Czysty Bezpośredni odnośnik Wina Historia

Description

Web Based implementation of SquiggleDraw algorithm, originally implemented by Gregg Wygonik.

The online version of this project takes a picture from your webcam and turns it into plotter-drawable, laser-engravable SVG file.

Here's an example of output image generated with this tool:

And here's a video my plotter that uses this tool:

Installation and running

Clone or download this repo, then run this command to get all dependencies installed locally:

npm install

Then, run this command to watch for changes and to launch the HTML page in the browser:

npm run dev

Algorithm

The algorithm processes the image in the following way:

Retrieve photo as an array of pixels IMAGE
Set desired number of horizontal lines as LINE_COUNT
Set desired number of vertical spacing as SPACING
Set desired line amplitude as AMPLITUDE
Set desired line rotation frequency as FREQUENCY
For y :=0 to image height step image height / LINE_COUNT do
	Set startx := 0
	Set starty := y
	Create a set of coordinates as [startx, starty]
	For x := 1 to image width step SPACING do
		Get brightness br of the current pixel as average of r,g,b values
		Set r := (255 - br) / LINE_COUNT * AMPLITUDE
		Set a := (255 - br) / FREQUENCY
		Create a set of coordinates as [x, y + Math.sin(a) * r]
Pass the resulting array of coordinates to rendering application

Using the output images

The output SVG file generated with this tool can be uploaded to SVG -> GCODE (or similar) converter in order to be plotted on a pen plotter or engraved on a laser cutter.

Roadmap and todo list

Ability to use image URL for input
Ability to save settings in local storage as presets (and reuse them later)
Ability to switch the squiggle mode (not just horizontal lines): spirals, vertical lines, loops, etc
Ability to go back to the previous images from your current "session"
Fix bug with the video size when the paper size is modified during video being on

If you want to implement any of these or contribute - please create an issue and feel free to submit a PR, I would appreciate that.

License

MIT license

2.5 KiB Czysty Bezpośredni odnośnik Wina Historia