private static void CreateMapFromPoints(List <Position> points, Settings settings)
{
points = points.Select(LocationUtils.ToMercator).ToList();
var boundingBox = LocationUtils.GetBoundingBox(points);
var mapper = Tiler.RenderMap(boundingBox, settings.VideoConfig.Width, settings.VideoConfig.Height);
points = mapper.GetPixels(points).ToList();
points = points.SkipTooClose(8).ToList();
points = points.SmoothLineChaikin(settings.SofteningSettings);
mapper.Save(Path.Combine(settings.OutputDirectory, "empty-map.png"));
var writer = new AviWriter(Path.Combine(settings.OutputDirectory, "map.avi"))
{
FramesPerSecond = settings.VideoConfig.Framerate,
EmitIndex1 = true
};
IAviVideoStream stream = new NullVideoStream(settings.VideoConfig.Width, settings.VideoConfig.Height);
if (settings.VideoConfig.ProduceVideo)
{
var encoder = new MotionJpegVideoEncoderWpf(settings.VideoConfig.Width, settings.VideoConfig.Height, 70);
stream = writer.AddEncodingVideoStream(encoder, true, settings.VideoConfig.Width, settings.VideoConfig.Height);
stream.Width = settings.VideoConfig.Width;
stream.Height = settings.VideoConfig.Height;
}
double lengthSeconds = settings.VideoConfig.VideoDuration.TotalSeconds;
double totalDistanceMeters = 0;
double yieldFrame = Math.Max(1, (points.Count / (lengthSeconds * settings.VideoConfig.Framerate)));
double nextFrame = 1;
int wroteFrames = 0;
for (int i = 1; i < points.Count; i++)
{
var previousPoint = mapper.FromPixelsToMercator(points[i - 1]);
var currentPoint = mapper.FromPixelsToMercator(points[i]);
totalDistanceMeters += previousPoint.DistanceMeters(currentPoint);
if (mapper.IsStashed)
{
mapper.StashPop();
}
mapper.DrawLine(points[i - 1], points[i]);
if (settings.DisplayDistance || settings.DisplayDateTime)
{
mapper.Stash();
}
if (settings.DisplayDistance)
{
mapper.WriteText(string.Format("{0:0}km", totalDistanceMeters / 1000));
}
if (settings.DisplayDateTime)
{
// mapper.WriteText(points[i].Time.ToString(), settings.VideoConfig.Height - 200);
Position positionWgs84 = currentPoint.GetWgs84();
var ianaTz = TimeZoneLookup.GetTimeZone(positionWgs84.Latitude, positionWgs84.Longitude).Result;
TimeSpan offset = TimeZoneConverter.TZConvert.GetTimeZoneInfo(ianaTz).GetUtcOffset(points[i].Time);
mapper.WriteText(points[i].Time.ToUniversalTime().Add(offset).ToString("MM/dd hh tt"), settings.VideoConfig.Height - 100);
}
if (i >= nextFrame)
{
byte[] frameData = mapper.GetBitmap();
stream.WriteFrame(true, frameData, 0, frameData.Length);
wroteFrames++;
nextFrame += yieldFrame;
}
}
if (mapper.IsStashed)
{
mapper.StashPop();
}
byte[] lastFrameData = mapper.GetBitmap();
stream.WriteFrame(true, lastFrameData, 0, lastFrameData.Length);
writer.Close();
// DrawBoundingBox(boundingBox, mapper);
string path = Path.Combine(settings.OutputDirectory, "complete-map.png");
mapper.Save(path);
Console.WriteLine("Wrote frames: {0}, points.Count={1}, yieldFrame={2}, path={3}", wroteFrames, points.Count, yieldFrame, path);
}