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