<?php
/**
* This example shows a background on frame 1, followed by images of a running dog (Moki) with a transparent background on the other frames.
*
* Note! This technique has an important shortcoming: when looping, the background will be shown by its own, each new loop.
* It is not possible to start looping _after_ the background has been drawn.
* This means that if the dog was running at a fixed position, you would see a flash of background every 10th frame.
*
* The image of the running dog was taken from http://almirah.deviantart.com/art/Moki-Run-Cycle-174572876
*/
use movemegif\domain\FileImageCanvas;
use movemegif\GifBuilder;
// just for debugging
error_reporting(E_ALL);
ini_set('display_errors', 1);
// include movemegif's namespace
require_once __DIR__ . '/../php/autoloader.php';
$builder = new GifBuilder(320, 180);
$builder->setRepeat();
// background image
$builder->addFrame()
->setCanvas(new FileImageCanvas(__DIR__ . '/moki/landscape.jpg'));
// dogs runs from left to the right
$imageIndex = 0;
for ($x = -140; $x <= 310; $x += 10) {
$builder->addFrame()
// load single frame from GIF file, and autodetect transparency color
->setCanvas(new FileImageCanvas(__DIR__ . '/moki/' . $imageIndex . '.gif'))
// number of 1/100 seconds per frame
->setDuration(8)
// position this frame on the bottom half of the image
->setTop(60)->setLeft($x)
// when done painting one frame of the dog, restore the state to just before the dog was drawn
->setDisposalToOverwriteWithPreviousFrame()
;
// next dog image
if (++$imageIndex == 10) {
$imageIndex = 0;
}
}
$builder->output('moki.gif');
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