Node.js GM stroke() Function

Last Updated : 30 Mar, 2023

The stroke() function is an inbuilt function in the GraphicsMagick library which is used to set the color and width of the stroke used to draw object outlines.

Syntax:

stroke( color, width )

Parameters: This function accepts two parameters as mentioned above and described below:

color: This parameter stores the color of the stroke.
width: This is an optional parameter that stores the width of the object.

Return Value: This function returns the GraphicsMagick object with the image added.

Original Image:

Example 1:

javascript

// Include gm library
const gm = require('gm');
 
// Import the image
gm('1.png')
 
// Set stroke color and siz
.stroke("#fe1232", 5)
 
// Set fill color
.fill("#56f864")
 
// Draw Circle using drawCircle function
.drawCircle(120, 50, 100, 60).stroke()
 
// Process and Write the image
.write("1a.png", function (err) {
    if (!err) console.log('done');
});

Output:

Original Image:

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)
 
// Process and Write the image
.write("1a.png", function (err) {
    if (!err) console.log('done');
});