The drawLine() function is an inbuilt function in the GraphicsMagick library which is used to draw the line with specified coordinates. The function returns the true value of success.
Syntax:
drawLine( 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 libraryconst gm = require('gm').subClass({imageMagick: true});
// Import the imagegm('1.png')
// Set the color for the stroke.stroke("#000000", 20)
// Invoke drawLine function with x0 as 100,// y0 as 45, x1 as 100, y1 as 89, r0 as 50// and r1 as 40.drawLine(100, 30, 400, 80)// Process and write the image.write("drawLine1.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)
// Invoke drawLine function with// x0 as 100, y0 as 45, x1 as 100,// y1 as 200.drawLine(100, 45, 100, 200)// Invoke drawLine function with// x0 as 100, y0 as 45, x1 as 500,// y1 as 45.drawLine(100, 45, 500, 45)// Invoke drawLine function with// x0 as 500, y0 as 45, x1 as 500,// y1 as 200.drawLine(500, 45, 500, 200)// Call to drawText Function.drawText(100, 280, "GeeksforGeeks!")
// Process and write the image.write("drawLine1.png", function (err) {
if (!err) console.log('done');
}); |
Output:
Reference: