Node.js GM motionBlur() Function

The motionBlur() function is an inbuilt function in the GraphicsMagick library which is used to apply the motion blur effect using a Gaussian convolution kernel with a configurable radius, sigma, and angle. The function returns the true value of success.

Syntax: 

motionBlur(radius, sigma, angle)

Parameters: This function accepts three parameters which are mentioned above and described below:  

• radius: This parameter is used to specify the value of the radius.
• sigma: This parameter is used to specify the value of the sigma.   
• angle: This parameter is used to specify the value of the angle in radians.

Return Value: This function returns the GraphicsMagick object.

Example 1:  

Javascript

// Include gm library
const gm = require('gm');

// Import the image
gm('1.png')

// Invoke borderColor() function
// and set border color to green
.borderColor('Green')

// Invoke resize function
.border(10,30)

// Invoke motionblur function
.motionBlur(10,30,30)

// Process and Write the image
.write("motionblur1.png", function (err) {
    if (!err) console.log('done');
});

Output:

Output1

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)

// Call to drawText Function
.drawText(100, 280, "GeeksforGeeks!")

// Invoke borderColor() function
// and set border color to green
.borderColor("Green")

// Invoke border function
.border(62,32)

// Invoke motionBlur() function
.motionBlur(10,10,10)

// Process and write the image
.write("motionblur2.png", function (err) {
    if (!err) console.log('done');
});

Output:

References:  

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