SkiaSharp.SceneGraph

Controls invalidation tracking for scene graph animations.

This class is used with Skottie animations to track which regions of the scene graph need to be redrawn. Call before seeking/ticking an animation, then afterward to capture the invalidated bounds.

Creates a new instance of .

Begins an invalidation tracking session.

Call this method before seeking or ticking an animation to start tracking invalidated regions. Call when finished.

Gets the bounding rectangle encompassing all invalidated regions.

The accumulated bounds of all invalidated areas since the last or construction.

Releases the native resources associated with this object.

Ends an invalidation tracking session.

Call this method after seeking or ticking an animation to finalize the invalidated region tracking. The property will contain the accumulated invalidated area. The local-space rectangle to mark as invalidated. The transformation matrix to apply to the rectangle.

Marks a rectangular region as invalidated.

The rectangle is transformed by the specified matrix before being added to the accumulated invalidated bounds.

Clears all accumulated invalidation state.

After calling this method, will return an empty rectangle until new regions are invalidated.