PHP | GmagickDraw line() Function

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:

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code

<?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(); 
?> 

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Output:

Program 2:

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<?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(); 
  
?> 

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Output:

Reference: http://php.net/manual/en/gmagickdraw.line.php



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