The ImagickDraw::pathLineToVerticalRelative() function is an inbuilt function in PHP which is used draw a vertical line path from the current point to the target point using relative coordinates. The target point then becomes the new current point.
Syntax:
bool ImagickDraw::pathLineToVerticalRelative( float $y )
Parameters:This function accepts a single parameter $y which holds the y-coordinate.
Return Value: This function returns TRUE on success.
Exceptions: This function throws ImagickException on error.
Below given programs illustrate the ImagickDraw::pathLineToVerticalRelative() function in PHP:
Program 1:
<?php   // Create a new imagick object $imagick = new Imagick();    // Create a image on imagick object $imagick->newImage(800, 250, 'white');    // Create a new ImagickDraw object $draw = new ImagickDraw();    // Set the stroke color $draw->setStrokeColor('blue');    // Set the stroke width $draw->setStrokeWidth(5);    // Draw line using pathLineToVerticalRelative $draw->pathStart(); $draw->pathMoveToRelative(400, 0); $draw->pathLineToVerticalRelative(1000); $draw->pathFinish();    // Render the draw commands $imagick->drawImage($draw);    // Show the output $imagick->setImageFormat('png'); header("Content-Type: image/png"); echo $imagick->getImageBlob(); ?> |
Output:
Program 2:
<?php   // Create a new imagick object $imagick = new Imagick();    // Create a image on imagick object $imagick->newImage(800, 250, 'white');    // Create a new ImagickDraw object $draw = new ImagickDraw();    $color = ['blue', 'red', 'green',       'yellow', 'orange', 'brown', 'pink'];    // Set the stroke width $draw->setStrokeWidth(5);    // Draw lines for ($x = 0; $x < 20; $x++) {     $draw->setStrokeColor($color[$x % 7]);     $draw->pathStart();     $draw->pathMoveToRelative($x * 40, 0);     $draw->pathLineToVerticalRelative(800);     $draw->pathFinish();    }    // Render the draw commands $imagick->drawImage($draw);    // Show the output $imagick->setImageFormat('png'); header("Content-Type: image/png"); echo $imagick->getImageBlob(); ?> |
Output:
Reference: https://www.php.net/manual/en/imagickdraw.pathlinetoverticalrelative.php
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