protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
viewer.FrameMove();
viewer.FrameMoveDerived();
viewer.Render();
this.Invalidate();
}
private void SaveToPngEachFrame(int step)
{
timer1.Enabled = false;
string dest_path = @"snapshots";
Directory.CreateDirectory(dest_path);
int orig_frame_idx = viewer.FrameIndex; // backup
int frame_len = viewer.GetMaxFrameLength();
for (int frame_idx = 0; frame_idx < frame_len; frame_idx += step)
{
viewer.FrameMove(frame_idx);
viewer.Render();
viewer.SaveToPng(Path.Combine(dest_path, String.Format("{0:D3}.png", frame_idx)));
}
viewer.FrameIndex = orig_frame_idx; // restore
timer1.Enabled = true;
}