An Autodrawer for Paint 3D created using Node.js and Robot.js. A recreation of my Python Autodrawer for Paint 3D but now using Node.

Sections:

• Requirements
• Setting up
  • config.json
  • positionsLocation / Positions
  • Values
  • Installing dependencies
  • Building
• Usage
• FAQ
• License

• Windows 10 or 11
• Microsoft Paint 3D
• Node.js

Before starting, it's necessary to set up some values which the drawer will rely upon.

config.json holds the main parameters for the program. It is located at the root folder. The default values should look like this:

{
    "useDefaultPositions": false,
    "useDefaultValues": false,
    "delayFactor": 1,
    "imageLocation": "../res/test4.png",
    "positionsLocation": "../res/positions.json",
    "valuesLocation": "../res/values.json"
}

• "useDefaultPositions" and "useDefaultValues": determines if the default values (located inside "src/json") are going to be used instead of "positionsLocation" and "valuesLocation". The default positions are based on my monitor's resolution (1920x1080) and a 4000x3000 canvas. It might work well if you have the same resolution and canvas size as me.
• "delayFactor": determines the sleep multiplier. Inside the code, there is the "sleep" method, which takes a time in milliseconds as argument. This value is multiplied by this "delayFactor".
• "imageLocation": path to the image. It is recommended to use an absolute path.
• "positionsLocation": path to the positions file. This file holds the coordinates that will be used to interact with Paint 3D's UI.
• "valuesLocation": path to the values file. This file holds the values that will be used to set Paint 3D's tools.

It is also necessary to set up the "positions.json" file, a file which holds the coordinates that will be used to interact with Paint 3D's UI. The default values - as stated previously - are based on my 1920x1080 monitor and 4000x3000 canvas. Each point is based of the XY screen's position of the Paint 3D's element. Documentation for every point is available here.

values.json is the file that holds values which will be set on Paint 3D. The default values file should look like this:

{
    "zoom": 25,
    "brushSize": 7,
    "brushOpacity": 75,
    "tool": "graphitepencil"
}

• "zoom": amount of zoom that will be set.
• "brushSize": thickness of the tool.
• "brushOpacity": opacity of the tool.
• "tool": tool which will be used. Available options are: "marker", "watercolor", "pixelpencil", "graphitepencil" and "crayon".

Open the terminal at the root folder then type npm i. All the dependencies will be downloaded and installed.

Open the terminal at the root folder then type npm run build. The project will be built to the "dist" directory.

Once the project is built, open the terminal at the root folder and type npm start to execute the program. Then maximizes Paint 3D and let the drawer do its job.

Q: Is there any hotkey to stop the drawer?

• R: Sadly I couldn't implement this feature. I tried to use some global keyboard listeners but no one succeeded.

Q: Will there ever be a GUI version of this drawer?

• R: That's my current plan right now. I will try to use this piece of code to build a desktop app using Electron

Feel free to do whatever you want with this code :)