/// <summary>
/// generate multiple frames of the cursor (|) based on a loop iterations
/// </summary>
/// <param name="writer">VideoFileWriter (open) for adding the frames</param>
/// <param name="sentence">Sentence object with the empty and full cursor png images</param>
/// <param name="interations">number of iterations 2 iterations equal to half a second frame</param>
private void SetCursorBlink(VideoFileWriter writer, Sentences sentence, int interations)
{
var emptyCursor = sentence.CursorEmpty;
var fullCursor = sentence.CursorFull;
for (int i = 0; i < interations; i++)
{
writer.WriteVideoFrame(LoadImageToMemory(emptyCursor.FullName));
writer.WriteVideoFrame(LoadImageToMemory(emptyCursor.FullName));
writer.WriteVideoFrame(LoadImageToMemory(fullCursor.FullName));
writer.WriteVideoFrame(LoadImageToMemory(fullCursor.FullName));
}
}
/// <summary>
/// generate multiple frames of the cursor (|) based on a loop iterations
/// </summary>
/// <param name="writer">VideoFileWriter (open) for adding the frames</param>
/// <param name="sentence">Sentence object with the empty and full cursor png images</param>
/// <param name="interations">number of iterations 2 iterations equal to half a second frame</param>
private void SetCursorBlink(AnimatedGifEncoder writer, Sentences sentence, int interations)
{
var emptyCursor = sentence.CursorEmpty;
var fullCursor = sentence.CursorFull;
for (int i = 0; i < interations; i++)
{
var emptyCursorFrame = new Bitmap(emptyCursor.FullName);
writer.AddFrame(emptyCursorFrame);
writer.AddFrame(emptyCursorFrame);
var fullCursorFrame = new Bitmap(fullCursor.FullName);
writer.AddFrame(fullCursorFrame);
writer.AddFrame(fullCursorFrame);
}
}
public IEnumerable <Sentences> GetSentences()
{
var di = new DirectoryInfo(_path);
var images = di.GetFiles().Where(c => c.Extension == ".png").Select(v => new { SentenceId = v.Name.Split('-')[0], Info = v });
var grouped = images.GroupBy(b => b.SentenceId);
var list = new List <Sentences>();
foreach (var item in grouped)
{
var sentence = new Sentences();
sentence.SentenceNumber = item.Key;
sentence.CursorFull = item.Where(b => b.Info.Name.Contains("cursorFull")).SingleOrDefault().Info;
sentence.CursorEmpty = item.Where(b => b.Info.Name.Contains("cursorEmpty")).SingleOrDefault().Info;
sentence.SentenceFile = item.Where(b => !b.Info.Name.Contains("cursor")).Select(b => b.Info)
.OrderBy(b => int.Parse(Path.GetFileNameWithoutExtension(b.Name.Split('-')[1])));
list.Add(sentence);
}
return(list);
}
/// <summary>
/// Generate a typly gif
/// </summary>
public void MakeGif()
{
string gifName = _path + "\\typly.gif";
AnimatedGifEncoder e = new AnimatedGifEncoder();
e.Start(gifName);
e.SetFrameRate(12);
e.SetRepeat(0); //-1:no repeat,0:always repeat
var images = GetSentences();
Sentences currentSentence = null;
foreach (var item in images)
{
if (currentSentence != null && item.SentenceNumber != currentSentence.SentenceNumber)
{
foreach (var reversedImage in currentSentence.SentenceFile.Reverse())
{
e.AddFrame(new Bitmap(reversedImage.FullName));
}
}
foreach (var image in item.SentenceFile)
{
e.AddFrame(new Bitmap(image.FullName));
}
SetCursorBlink(e, item, 2);
currentSentence = item;
}
//add last frame of cursor blinking for 2 seconds
var twoCursors = images.Last();
SetCursorBlink(e, twoCursors, 6);
e.Finish();
}
/// <summary>
/// Generate a .mp4 typly video
/// </summary>
/// <param name="framesPerSecond"></param>
public void MakeVideo(int framesPerSecond = 10)
{
VideoFileWriter writer = new VideoFileWriter();
writer.Open(_path + "\\typly.mp4", _width, _height, framesPerSecond, VideoCodec.MPEG4, 1000000);
var images = GetSentences().ToList();
Sentences currentSentence = null;
foreach (var item in images)
{
if (currentSentence != null && item.SentenceNumber != currentSentence.SentenceNumber)
{
foreach (var reversedImage in currentSentence.SentenceFile.Reverse())
{
writer.WriteVideoFrame(LoadImageToMemory(reversedImage.FullName));
}
}
foreach (var image in item.SentenceFile)
{
writer.WriteVideoFrame(LoadImageToMemory(image.FullName));
}
SetCursorBlink(writer, item, 2);
currentSentence = item;
}
//add last frame of cursor blinking for 2 seconds
var twoCursors = images.Last();
SetCursorBlink(writer, twoCursors, 6);
writer.Close();
}