What is PhpDig?
PhpDig is a PHP MySQL based
Web Spider & Search Engine.

imagefilledpolygon
Prev	XXV. GD Functions	Next

imagefilledpolygon

Name

imagefilledpolygon — Creates a filled poygon.

Synopsis

int imagefilledpolygon(image, points, vertices, color); int image: Image identifier array points: Array of points int vertices: Number of vertices int color: Specified color

Returns

TRUE on success

Description

Creates a filled polygon. The array specifying the drawing coordinates must contain both the x and y coordinates of each point in the polygon. For example, array(100,100,125,125,150,150,200,200,100,100) would mean that the first point is at 10,100, the second at 125,125, and so on. The polygon must have at least three vertices for the function to work; a good way to determine the number of vertices is to count the array using count() and divide by two. A point is made up of two values. If you used user input to assign the polygon points, you can use the modulus operator (%) to determine whether an even number of values were given. Use imagepolygon() if you want to create an unfilled polygon.

Example

Example 418. Draw a red filled polygon

header("Content-type: image/png");
$im = imagecreate(200, 200);
$green = imagecolorallocate($im, 0, 255, 0);
$red = imagecolorallocate($im, 255, 0, 0);
$points = array(100, 10, 150, 50, 160, 80, 10, 150, 100, 10);
$vertices = count($points) / 2;
imagefilledpolygon($im, $points, $vertices, $red);
imagepng($im);
imagedestroy($im);

Prev	Home	Next
imagefill	Up	imagefilledrectangle

PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.