Node.js GM drawCircle() Function

The drawCircle() function is an inbuilt function in the GraphicsMagick library which is used to draw Circles with specified coordinates. The function returns the true value of success.

Syntax:

drawCircle( x0, y0, x1, y1 )

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

x0: This parameter stores the x-coordinate value of the initial point.
y0: This parameter stores the y-coordinate value of the initial point.
x1: This parameter stores the x-coordinate value of the final point.
y1: This parameter stores the y-coordinate value of the final point.

Return Value: This function returns the GraphicsMagick object.

Original Image:

Example 1:

javascript

// Include gm library
const gm = require('gm').subClass({imageMagick: true});
 
// Import the image
gm('1.png')
 
// set the color for the stroke
.stroke("#ffffff")
 
// Invoke drawCircle function with
// x0 as 30, y0 as 45, x1 as 300
// and y1 as 89
.drawCircle(30, 45, 300, 89)
 
// Process and write the image
.write("drawCircle1.png", function (err) {
    if (!err) console.log('done');
});

Output:

Example 2:

javascript

// Include gm library
const gm = require('gm');
 
// Import the image
gm(600, 300, 'white')
 
// Set the color for the stroke
.stroke("green", 3)
 
// Set the font
.font("Helvetica.ttf", 60)
 
// Invoke drawCircle function with
// x0 as 10, y0 as 145, x1 as 200
// and y1 as 199
.drawCircle(10, 145, 200, 199)
 
// Call to drawText Function
.drawText(100, 280, "w3wiki!")
 
// Process and write the image
.write("drawCircle1.png", function (err) {
    if (!err) console.log('done');
});

Output:

Reference:

http://www.graphicsmagick.org/GraphicsMagick.html#details-draw
https://www.npmjs.com/package/gm

javascript

javascript

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