Node.js GM charcoal() Function
The charcoal() function is an inbuilt function in the GraphicsMagick library which is used to add a charcoal filter to the image. The function returns the true value of success.
Syntax:
charcoal( factor )
Parameters: This function accepts a single parameter which is mentioned above and described below:
- factor: This parameter stores the value of the charcoal factor which is to be applied to the image.
Return Value: This function returns the Gmagick charcoal image.
Original Image:
Example 1:
javascript
// Include gm library const gm = require('gm'); // Import the image gm('1.png') // Invoke Charcoal function // with charcoal factor as 12 .charcoal(4) // Process and Write the image .write("charcoal1.png", function (err) { if (!err) console.log('done'); }) |
Output:
Example 2:
javascript
// Include gm library const gm = require('gm'); // Import the image gm('1.png') // Set stroke color .stroke("#fe1232") // Set fill color .fill("#1200ff") / Draw Rectangle using drawRectangle function.drawRectangle(10, 2, 130, 30, 1, 2) //Invoke Charcoal function as factor 3 .charcoal(3) // Process and Write the image .write("charcoal2.png", function (err) { if (!err) console.log('done'); }) |
Output:
Reference:
- http://www.graphicsmagick.org/GraphicsMagick.html#details-charcoal
- https://www.npmjs.com/package/gm
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