private void RenderImageThatMasksText(VideoInterpreter.VideoCapture frame, IBoundingBox invalidatedRegion)
{
frame.CopyToWriteableBitmap(BackgroundOverlayImage, invalidatedRegion);
BackgroundOverlay.Width = frame.Width;
BackgroundOverlay.Height = frame.Height;
foreach (var textLoc in TextLocations)
{
CopyBitmapToWriteableBitmap(_backgroundBitmap, BackgroundOverlayImage, textLoc.TreeNode);
}
}
public void WriteBackgroundAndRender(Tree tree)
{
VideoInterpreter.VideoCapture capture = tree["videocapture"] as VideoInterpreter.VideoCapture;
IBoundingBox invalidatedpixels = tree["invalidated"] as IBoundingBox;
//Todo: this is not working properly - returning null when there is a change...
List <Tree> contentRegionBoxes = GetContentRegionBoxes(tree);
if (invalidatedpixels != null)
{
_backgroundBitmap.Width = tree.Width;
_backgroundBitmap.Height = tree.Height;
WriteBackgroundPixels(_backgroundBitmap, contentRegionBoxes, tree);
Dispatcher.BeginInvoke(_update, capture, tree, contentRegionBoxes, tree);
}
else
{
WriteBackgroundPixels(_backgroundBitmap, contentRegionBoxes, tree);
Dispatcher.BeginInvoke(_update, capture, tree, contentRegionBoxes, null);
}
}
private void UIThreadUpdate(VideoInterpreter.VideoCapture frame, Tree root, List <Tree> textNodes, IBoundingBox invalidated)
{
SetTextBoxes(textNodes, root);
RenderImageThatMasksText(frame, invalidated);
}
