PHP Manual»GD and Image Funzioni»imagefilledpolygon

imagefilledpolygon

(PHP 4, PHP 5, PHP 7, PHP 8)

imagefilledpolygon — Draw a filled polygon

Descrizione

Signature as of PHP 8.0.0 (not supported with named arguments)

function imagefilledpolygon(GdImage $image, array $points, int $color): bool

Alternative signature (deprecated as of PHP 8.1.0)

function imagefilledpolygon(
    GdImage $image,
    array $points,
    int $num_points,
    int $color
): bool

imagefilledpolygon() creates a filled polygon in the given image.

Elenco dei parametri

image

Una risorsa immagine, restituita da una delle funzioni di creazione immagine, come imagecreatetruecolor().

points

An array containing the x and y coordinates of the polygons vertices consecutively.

num_points

Total number of points (vertices), which must be at least 3.

If this parameter is omitted as per the second signature, points must have an even number of elements, and num_points is assumed to be count($points)/2.

color

A color identifier created with imagecolorallocate().

Valori restituiti

Restituisce true in caso di successo, false in caso di fallimento.

Log delle modifiche

Versione	Descrizione
8.1.0	The parameter `num_points` has been deprecated.
8.0.0	`image` expects a GdImage instance now; previously, a valid `gd` resource was expected.

Esempi

Example #1 imagefilledpolygon() example

<?php
// set up array of points for polygon
$values = array(
            40,  50,  // Point 1 (x, y)
            20,  240, // Point 2 (x, y)
            60,  60,  // Point 3 (x, y)
            240, 20,  // Point 4 (x, y)
            50,  40,  // Point 5 (x, y)
            10,  10   // Point 6 (x, y)
            );

// create image
$image = imagecreatetruecolor(250, 250);

// allocate colors
$bg   = imagecolorallocate($image, 0, 0, 0);
$blue = imagecolorallocate($image, 0, 0, 255);

// fill the background
imagefilledrectangle($image, 0, 0, 249, 249, $bg);

// draw a polygon
imagefilledpolygon($image, $values, $blue);

// flush image
header('Content-type: image/png');
imagepng($image);
?>

Il precedente esempio visualizzerà qualcosa simile a:

Output of example : imagefilledpolygon()

Vedere anche:

imagepolygon() - Draws a polygon