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ImagickDraw::pathLineToRelative

(PECL imagick 2, PECL imagick 3)

ImagickDraw::pathLineToRelativeDraws a line path

Description

public ImagickDraw::pathLineToRelative(float \$x, float \$y): bool
Warning

This function is currently not documented; only its argument list is available.

Draws a line path from the current point to the given coordinate using relative coordinates. The coordinate then becomes the new current point.

Parameters

x

starting x coordinate

y

starting y coordinate

Return Values

No value is returned.

Axeia
12 years ago
Hope this of help of anything, I had one hell of a time to draw a simple pie slice, where in GD2 is very easily done with the 'arc' function.. this is a bit harder to do in imagick.

The degrees are a mess, seems like the path, arc and ellipse functions all use a different system.. utterly confusing.
Code below should at least be of help in understanding how it works.

For an example of the output, please see:
http://www.imagebam.com/image/8e0ca432393602
<?php

function getPointOnCircumference( \$widthOfCircle, \$heightOfCircle, \$degrees, \$x = 0, \$y = 0 )
{
return array(

'x' => \$x + (\$widthOfCircle/2)  * sin( deg2rad( \$degrees ) ),

'y' => \$y + (\$heightOfCircle/2) * cos( deg2rad( \$degrees ) )
);
}

\$width  = 200;

\$height = 200;

\$border = 2;

\$x = \$width / 2;

\$y = \$height / 2;

\$im = new Imagick();

\$im->newImage( \$width, \$height, "orange", "png" );

\$draw = new ImagickDraw();

\$draw->setFillColor( 'lime' );

\$draw->setStrokeColor( new ImagickPixel( 'black' ) );

\$draw->setStrokeWidth( 2 );

\$draw->arc( 0, 0, (\$width-\$border), (\$height-\$border), 270, 360  ); //270 till 360 degrees

\$im->DrawImage( \$draw );

\$draw2 = new ImagickDraw();

\$draw2->setFillColor( 'red' );

\$draw2->setStrokeColor( new ImagickPixel( 'black' ) );

\$draw2->setStrokeWidth( 2 );

\$draw2->ellipse( 100, 100, \$x-\$border, \$y-\$border, 0, 90 );         //0 till 90 degrees

\$im->DrawImage( \$draw2 );

\$draw3 = new ImagickDraw();

\$draw3->setFillColor( 'navy' );

\$draw3->setStrokeColor( new ImagickPixel( 'white' ) );

\$draw3->setStrokeWidth( 2 );

\$draw3->pathStart();

\$degrees90  = getPointOnCircumference( \$width-2*\$border,\$height-2*\$border, 360  );

\$degrees180 = getPointOnCircumference( \$width-2*\$border,\$height-2*\$border, 270 );

\$draw3->pathMoveToRelative( \$x, \$y ); //Move 'pencil' to middle of image.

\$draw3->pathLineToRelative\$degrees90['x'],  \$degrees90['y'] );

\$draw3->pathEllipticArcRelative( \$width-\$border, \$height-\$border, 0, false, true, \$degrees180['x'], \$degrees180['y']-\$y+\$border );

\$draw3->pathClose();

\$im->DrawImage( \$draw3 ); 