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Nodejs | GM motionBlur() Function
  • Last Updated : 29 Apr, 2020

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

Syntax:

motionBlur(radius, sigma, angle)

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

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

Return Value: This function returns the GraphicsMagick object.

Example 1:






// Include gm library
var 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:

Example 2:




// Include gm library
var 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:

Reference:




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