ImagickDraw::ellipse

(PECL imagick 2, PECL imagick 3)

ImagickDraw::ellipse — Dibuja una elipse en la imagen

Descripción

public ImagickDraw::ellipse(
    float $ox,
    float $oy,
    float $rx,
    float $ry,
    float $start,
    float $end
): bool

Advertencia

Esta función no está documentada actualmente, solamente se encuentra disponible la lista de parámetros.

Dibuja una elipse en la imagen.

Parámetros

ox
oy
rx
ry
start
end

Valores devueltos

No devuelve ningún valor.

Ejemplos

Ejemplo #1 Ejemplo de ImagickDraw::ellipse()

<?php
function ellipse($strokeColor, $fillColor, $backgroundColor) {

    $draw = new \ImagickDraw();
    $draw->setStrokeColor($strokeColor);
    $draw->setFillColor($fillColor);

    $draw->setStrokeWidth(2);
    $draw->setFontSize(72);

    $draw->ellipse(125, 70, 100, 50, 0, 360);
    $draw->ellipse(350, 70, 100, 50, 0, 315);

    $draw->push();
    $draw->translate(125, 250);
    $draw->rotate(30);
    $draw->ellipse(0, 0, 100, 50, 0, 360);
    $draw->pop();

    $draw->push();
    $draw->translate(350, 250);
    $draw->rotate(30);
    $draw->ellipse(0, 0, 100, 50, 0, 315);
    $draw->pop();

    $imagick = new \Imagick();
    $imagick->newImage(500, 500, $backgroundColor);
    $imagick->setImageFormat("png");

    $imagick->drawImage($draw);

    header("Content-Type: image/png");
    echo $imagick->getImageBlob();
}

?>

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User Contributed Notes 1 note

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Axeia ¶

15 years ago


<?php

/**

 * Please note that if you use a stroke. ( Imagick::setStrokeWidth( 2 ) ) the

 * stroke is drawn outside the ellipse dimensions. 

 *

 * @param float $ox - Offset X, distance from the center of the ellipse till the left border of the image

 * @param float $oy - Offset Y, distance from the center of the ellipse till the top of the image

 * @param float $rx - X radius

 * @param float $ry - Y radius

 * @param float float $start - Starting angle in degrees.

 * @param float float $end - End angle in degrees.

 *

 */

ImagickDraw::ellipse( float $ox  , float $oy  , float $rx  , float $ry  , float $start  , float $end  );

?>



Example of drawing a full ellipse (from 0, 360) and outputting it as a PNG.

Do note, that this is  by default anti-aliased unlike the GD functions which only support it on lines that aren't on a transparent background.

<?php

$width =  200;

$height = 100;

$border = 2;



$img = new Imagick();

$img->newImage( $width, $height, new ImagickPixel( 'transparent' ) );



$draw = new ImagickDraw();

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

$draw->setStrokeWidth( 2 );

$draw->setFillColor( new ImagickPixel( 'transparent' ) );

//Substract the border from the radius so it doesn't fall outside the screen.

$draw->ellipse( $width/2, $height/2, ($width/2)-$border, ($height/2)-$border, 0, 360 );

$img->drawImage( $draw );

$img->setImageFormat( "png" );



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

echo $img;

?>

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