PHP | GmagickDraw line() Function

Last Updated : 29 Jan, 2019

The GmagickDraw::line() function is an inbuilt function in PHP which is used to draw a line. This function draw the line using the current stroke color, stroke opacity, and stroke width. Syntax:

public GmagickDraw::line( $sx, $sy, $ex, $ey )

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

$sx: This parameter takes the value of starting x coordinate.
$sy: This parameter takes the value of starting y coordinate.
$ex: This parameter takes the value of ending x coordinate.
$ex: his parameter takes the value of ending y coordinate.

Return Value: This function returns GmagickDraw object on success. Errors/Exceptions: This function throws GmagickException on error. Below programs illustrates the GmagickDraw::annotate() function in PHP: Program 1:

php

<?php 
   
// Create a GmagickDraw object 
$draw = new GmagickDraw();  
  
// Set the color
$draw->setFillColor('Green'); 
  
// Set the width and height of image 
$draw->setStrokeWidth(1170); 
$draw->setFontSize(72); 
   
// Function to draw line
$draw->line(20, 20, 280, 465);
 
$gmagick = new Gmagick(); 
$gmagick->newImage(500, 500, 'White'); 
$gmagick->setImageFormat("png"); 

// Use of drawimage function
$gmagick->drawImage($draw); 
 
// Display the output image 
header("Content-Type: image/png"); 
echo $gmagick->getImageBlob(); 
?>

Output:

Program 2:

php

<?php 
    
// Create a GmagickDraw object 
$draw = new GmagickDraw();  
   
// Set the color
$draw->setFillColor('Green'); 
   
// Set the width and height of image 
$draw->setStrokeWidth(1); 
 
    
// Function to draw line
for($x = 0; $x < 40; $x++) {
    $draw->line(rand(0, 100), rand(0, 60), rand(0, 500), rand(0, 500));
    $draw->line(rand(0, 100), rand(0, 60), rand(0, 500), rand(0, 500));
    $draw->line(rand(0, 100), rand(0, 60), rand(0, 500), rand(0, 500));
    $draw->line(rand(0, 100), rand(0, 60), rand(0, 500), rand(0, 500));
}

$gmagick = new Gmagick(); 
$gmagick->newImage(500, 500, 'White'); 
$gmagick->setImageFormat("png"); 
 
// Set the color
$draw->setFillColor('Black'); 
$draw->setFontSize(25); 
 
// Use of drawimage function
$gmagick->drawImage($draw); 

$gmagick->annotateImage($draw, 5, 120, 0, 
        'GeeksforGeeks: A computer science portal'); 

// Display the output image 
header("Content-Type: image/png"); 
echo $gmagick->getImageBlob(); 

?>