public async Task<List<WriteableBitmap>> Animate(int renderWidth, int renderHeight, TimeSpan length, ProgressToken token, ParameterBinding start, ParameterBinding end)
{
const int parallelism = 1; // TODO change _lastRot variables so animations can be rendered in parallel
var totalFrames = (int)length.TotalSeconds*AnimationFps;
var frames = new List<WriteableBitmap>();
for (var frame = 0; frame < totalFrames; frame += parallelism)
{
var frameBindings = Enumerable.Range(frame, parallelism).Select(i => start.Interpolate(end, i, totalFrames));
var renderTasks = frameBindings.Select(b => RenderAsync(renderWidth, renderHeight, b, null));
var rendered = await Task.WhenAll(renderTasks);
frames.AddRange(rendered);
if (token != null)
{
token.Value = (int)((float)frame / totalFrames * 100);
}
}
return frames;
}
