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Website Programming in PHP / MYSQL
imagepolygon
(PHP 4, PHP 5)
imagepolygon — Draws a polygon
Description
bool imagepolygon
( resource $image
, array $points
, int $num_points
, int $color
)
imagepolygon() creates a polygon in the given image .
Parameters
- image
-
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
- points
-
An array containing the polygon's vertices, i.e. points[0] = x0, points[1] = y0, points[2] = x1, points[3] = y1, etc.
- num_points
-
Total number of points (vertices)
- color
-
A color identifier created with imagecolorallocate()
Return Values
Returns TRUE on success or FALSE on failure.
Examples
Example #1 imagepolygon() example
<?php
// create a blank image
$image = imagecreatetruecolor(400, 300);
// fill the background color
$bg = imagecolorallocate($image, 0, 0, 0);
// choose a color for the polygon
$col_poly = imagecolorallocate($image, 255, 255, 255);
// draw the polygon
imagepolygon($image, array (
0, 0,
100, 200,
300, 200
),
3,
$col_poly);
// output the picture
header("Content-type: image/png");
imagepng($image);
?>
The above example will output something similar to:
