imagefilltoborder

(PHP 4, PHP 5)

imagefilltoborderFlood fill to specific color

Description

bool imagefilltoborder ( resource $image , int $x , int $y , int $border , int $color )

imagefilltoborder() performs a flood fill whose border color is defined by border. The starting point for the fill is x, y (top left is 0, 0) and the region is filled with color color.

Parameters

image

An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().

x

x-coordinate of start.

y

y-coordinate of start.

border

The border color. A color identifier created with imagecolorallocate().

color

The fill color. A color identifier created with imagecolorallocate().

Return Values

Returns TRUE on success or FALSE on failure.

Examples

Example #1 Filling an ellipse with a color

<?php
// Create the image handle, set the background to white
$im imagecreatetruecolor(100100);
imagefilledrectangle($im00100100imagecolorallocate($im255255255));

// Draw an ellipse to fill with a black border
imageellipse($im50505050imagecolorallocate($im000));

// Set the border and fill colors
$border imagecolorallocate($im000);
$fill imagecolorallocate($im25500);

// Fill the selection
imagefilltoborder($im5050$border$fill);

// Output and free memory
header('Content-type: image/png');
imagepng($im);
imagedestroy($im);
?>

The above example will output something similar to:

Output of example : Filling an ellipse with a color

Коментарии

Very useful to build a pseudo-sphere with a color gradient...

<?php
 $width 
300;
 
$center $width 2;
 
$colordivs 255 $center;
 
$im = @imagecreate($width$width);
 
$back_color imagecolorallocate($im203040);
 
imagefill($im00$back_color); 
 for (
$i 0$i <= $center$i++)
 {
     
$diametre $width $i;
   
$el_color imagecolorallocate($im$i $colordivs00);
   
imagearc($im$center$center$diametre$diametre0360$el_color);
   
imagefilltoborder($im$center$center$el_color$el_color);
 }
 
imagepng($im);
?>

Dark Skull Software
http://www.darkskull.net
2003-06-11 08:02:48
http://php5.kiev.ua/manual/ru/function.imagefilltoborder.html
In the example below, for those with newer GD versions, it makes more sense to replace:

imagearc($im, $center, $center, $diametre, $diametre, 0, 360, $el_color);

with:

imageellipse($im, $center, $center, $diametre, $diametre, $el_color);

This is obviously simpler.
2004-09-10 17:54:33
http://php5.kiev.ua/manual/ru/function.imagefilltoborder.html

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