PHP | ImagickDraw polyline() Function

Last Updated : 30 Aug, 2019

The ImagickDraw::polyline() function is an inbuilt function in Imagick library of PHP which is used to draw a polyline using the current stroke, stroke width, and fill color or texture, using the specified array of coordinates. Syntax:

bool ImagickDraw::polyline( $coordinates )

Parameters: This function accepts a single parameter $coordinates which is used to hold the coordinates of the point as an array. Return Value: This function returns True on success. Below programs illustrates the ImagickDraw::polyline() function in PHP: Program 1:

php

<?php

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

// Set Stroke Opacity
$draw->setStrokeOpacity(1);

// Set Stroke Color
$draw->setStrokeColor('green');

// Set Fill Color
$draw->setFillColor('red');

// Set Stroke Width
$draw->setStrokeWidth(5);

// Define the points at which lines to be draw
$points = [
        ['x' => 40 * 5, 'y' => 10 * 5],
        ['x' => 20 * 5, 'y' => 20 * 5],
        ['x' => 70 * 5, 'y' => 50 * 5],
        ['x' => 60 * 5, 'y' => 15 * 5]
    ];

// Call Polyline Function
$draw->polyline($points);

// Create an Imagick Object
$image = new Imagick();

// Create new Image
$image->newImage(500, 300, 'white');

// Set Image Format
$image->setImageFormat("png");

// Draw Image
$image->drawImage($draw);

header("Content-Type: image/png");

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

Output:

Program 2:

php

<?php

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

// Set Stroke Opacity
$draw->setStrokeOpacity(1);

// Set Stroke Color
$draw->setStrokeColor('Black');

// Set Fill Color
$draw->setFillColor('Green');

// Set Stroke Width
$draw->setStrokeWidth(3);

// Define the points at which lines to be draw
$points = [
        ['x' => 40 * 5, 'y' => 10 * 5],
        ['x' => 20 * 5, 'y' => 20 * 5],
        ['x' => 70 * 5, 'y' => 50 * 5],
        ['x' => 40 * 5, 'y' => 10 * 5]
    ];

// Set the Font Size 
$draw->setFontSize(50); 
  
// Set the font family 
$draw->setFontFamily('Ubuntu-Mono'); 
  
// Set the text to be added 
$draw->annotation(30, 40, "GeeksForGeeks"); 

// Call Polyline Function
$draw->polyline($points);

// Create an Imagick Object
$image = new Imagick();

// Create new Image
$image->newImage(500, 300, 'white');

// Set Image Format
$image->setImageFormat("png");

// Draw Image
$image->drawImage($draw);

header("Content-Type: image/png");

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