PHP | ImagickDraw setStrokeLineJoin() Function

Last Updated : 10 Oct, 2021

The ImagickDraw::setStrokeLineJoin() function is an inbuilt function in PHP that is used to specify the shape to be used at the corners of paths when they are stroked.

Syntax:

bool ImagickDraw::setStrokeLineJoin( $linejoin )

Parameters: This function accepts a single parameter $linejoin which is used to hold the value of line join as integer type.

LINEJOIN constants:

imagick::LINEJOIN_UNDEFINED (integer)
imagick::LINEJOIN_MITER (integer)
imagick::LINEJOIN_ROUND (integer)
imagick::LINEJOIN_BEVEL (integer)

Return Value: This function does not return any value.

Below programs illustrate the ImagickDraw::setStrokeLineJoin() function in PHP:

Program 1:

PHP

<?php

// require_once('path/vendor/autoload.php');

// Create an ImagickDraw object to draw into.
$draw = new \ImagickDraw();

// Set the stroke opacity
$draw->setStrokeOpacity(1);

// Set the stroke color
$draw->setStrokeColor('Black');

// Set the stroke opacity
$draw->setStrokeOpacity(0.8);

//Set the stroke width
$draw->setStrokeWidth(10);

// Set Stroke Line Join Parameters
$draw->setStrokeLineJoin(Imagick::LINEJOIN_ROUND);

// Set the image filled color 
$draw->setFillColor('lightgreen');
    
// Set the Stroke Miter Limit 
$draw->setStrokeMiterLimit(40 * 12);
$points = [
        ['x' => 50 * 6, 'y' => 10 * 5],
        ['x' => 20 * 7, 'y' => 30 * 5], 
        ['x' => 60 * 8, 'y' => 50 * 5], 
        ['x' => 70 * 3, 'y' => 15 * 5],
    ];

// Draw the polygon
$draw->polygon($points);

// Create new Imagick object 
$image = new \Imagick();

// Set the dimension of image
$image->newImage(500, 300, 'white');

// Set the image format
$image->setImageFormat("png");

// Draw the image
$image->drawImage($draw);
header("Content-Type: image/png");

// Display the image
echo $image->getImageBlob();
?>

Output:

Program 2:

PHP

<?php

// Create an ImagickDraw object
$draw = new ImagickDraw();

// Set the Stroke Width
$draw->setStrokeWidth(1);

// Set the Stroke Color
$draw->setStrokeColor('black');
    
// Set the image filled color
$draw->setFillColor('yellow');

// Set the Stroke Width
$draw->setStrokeWidth(20);

// Declare the offset variable
$offset = 220;

$lineJoinStyle = [
        \Imagick::LINEJOIN_MITER,
        \Imagick::LINEJOIN_ROUND,
        \Imagick::LINEJOIN_BEVEL,
        ];

for ($x = 0; $x < count($lineJoinStyle); $x++) {
     $draw->setStrokeLineJoin($lineJoinStyle[$x]);
    $points = [
            ['x' => 40 * 5, 'y' => 10 * 5 + $x * $offset],
            ['x' => 20 * 5, 'y' => 20 * 5 + $x * $offset],
            ['x' => 70 * 5, 'y' => 50 * 5 + $x * $offset],
            ['x' => 40 * 5, 'y' => 10 * 5 + $x * $offset],
        ];

// Draw the polygon
$draw->polyline($points);
}

// Create new Imagick object 
$image = new \Imagick();

// Set the image dimensions
$image->newImage(500, 700, 'white');

// Set the image format
$image->setImageFormat("png");

// Draw the image
$image->drawImage($draw);
header("Content-Type: image/png");

// Display the image
echo $image->getImageBlob();
?>