IMAGESETPIXEL(3) 1 IMAGESETPIXEL(3)
imagesetpixel - Set a single pixel
SYNOPSIS
bool imagesetpixel (resource $image, int $x, int $y, int $color)
DESCRIPTION
imagesetpixel(3) draws a pixel at the specified coordinate.
PARAMETERS
o $
image -An image resource, returned by one of the image creation functions, such as imagecreatetruecolor(3).
o $x
- x-coordinate.
o $y
- y-coordinate.
o $color
- A color identifier created with imagecolorallocate(3).
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
imagesetpixel(3) example
A random drawing that ends with a regular picture.
<?php
$x = 200;
$y = 200;
$gd = imagecreatetruecolor($x, $y);
$corners[0] = array('x' => 100, 'y' => 10);
$corners[1] = array('x' => 0, 'y' => 190);
$corners[2] = array('x' => 200, 'y' => 190);
$red = imagecolorallocate($gd, 255, 0, 0);
for ($i = 0; $i < 100000; $i++) {
imagesetpixel($gd, round($x),round($y), $red);
$a = rand(0, 2);
$x = ($x + $corners[$a]['x']) / 2;
$y = ($y + $corners[$a]['y']) / 2;
}
header('Content-Type: image/png');
imagepng($gd);
?>
The above example will output something similar to:[NOT DISPLAYABLE MEDIA]Output of example : imagesetpixel()
SEE ALSO
imagecreatetruecolor(3), imagecolorallocate(3), imagecolorat(3).
PHP Documentation Group IMAGESETPIXEL(3)
