Type Alias ProgressCallback 

pub type ProgressCallback = Box<dyn Fn(&Progress) -> bool + Send>;

Callback invoked on every processed frame to report progress.

The closure receives a Progress reference and must return true to continue processing or false to request cancellation. When false is returned, Pipeline::run stops at the next frame boundary and returns PipelineError::Cancelled.

Aliased Type

pub struct ProgressCallback(/* private fields */);