The recolor() function is an inbuilt function in the GraphicsMagick library which is used to apply a color translation matrix to the image channels. The function returns the true value of success.
Syntax:
recolor( matrix )
Parameters: This function accepts a single parameter as mentioned above and described below:
- Matrix: This parameter is used to specify the value as a string of a matrix which is decoded as a color transformation matrix.
Return Value: This function returns the GraphicsMagick object.
Example 1:
javascript
// Include gm libraryconst gm = require('gm');
// Import the imagegm('1.png')
// Invoke recolor function.recolor('4 0 0, 0 6 0, 9 0 1')
// Process and Write the image.write("recolor1.png", function (err) {
if (!err) console.log('done');
}); |
Output:
Example 2:
javascript
// Include gm libraryconst gm = require('gm');
// Import the imagegm(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 recolor function.recolor('10 0 0, 2 6 0, 9 0 5')
// Process and write the image.write("recolor2.png", function (err) {
if (!err) console.log('done');
}); |
Output:
Reference: