Function resvg_get_object_bbox 

#[unsafe(no_mangle)]
pub extern "C" fn resvg_get_object_bbox(
    tree: *const resvg_render_tree,
    bbox: *mut resvg_rect,
) -> bool

@brief Returns an object bounding box.

This bounding box does not include objects stroke and filter regions. This is what SVG calls “absolute object bonding box”.

If you’re looking for a “complete” bounding box see #resvg_get_image_bbox

@param tree Render tree. @param bbox Image’s object bounding box. @return false if an image has no elements.