#include "AnimatedGif.h"

using namespace ci;
using namespace ci::app;
using namespace std;

void AnimatedGif::init( ci::DataSourceRef filePath, int frameRate ){
	if( filePath ){
		load( filePath );
	}
	mFrameRate = frameRate;
	mCurrentFrame = 0;
}

void AnimatedGif::load( ci::DataSourceRef filePath ){
	ci::ImageSource::Options options;
	options.index( 0 );
	
	ImageSourceRef img = loadImage( filePath, options );
	int count = img->getCount();
	
	for( int i = 0; i < count; ++i ) {
		SurfaceRef frame = Surface::create( loadImage( filePath, options ) );
		mGifFrames.push_back( frame );
		options.index( options.getIndex() + 1 );
	}
}

void AnimatedGif::update()
{
	if( getElapsedFrames() % int( float( getFrameRate() ) / float( mFrameRate ) ) == 0 ){
		mCurrentFrameTexture = gl::Texture::create( *mGifFrames[mCurrentFrame] );
		mCurrentFrame++;
		mCurrentFrame %= mGifFrames.size();
	}
}