Function `try_find_smaller_bounds`

pub fn try_find_smaller_bounds(current_bounds: IntegerBounds, pixel_at: impl Fn(Vec2<usize>) -> bool) -> Option<IntegerBounds>

Return the smallest bounding rectangle including all pixels that satisfy the predicate. Worst case: Fully transparent image, visits each pixel once. Best case: Fully opaque image, visits two pixels. Returns None if the image is fully transparent. Returns [(0,0), size] if the image is fully opaque. Designed to be cache-friendly linear search. Optimized for row-major image vectors.