def ProjectJSONDecoder(json_obj):
if 'bbox' in json_obj:
bbox = json_obj['bbox']
json_obj['bbox'] = BoundingBox2D(minx=bbox[0],
miny=bbox[1],
maxx=bbox[2],
maxy=bbox[3])
return json_obj
def get_bbox_from_grid_spec(center_x: float, center_y: float, cell_size: Tuple[float, float],
cols: int, rows: int) -> BoundingBox2D:
"""Returns a tuple of 4 coordinates for the edges of the domain
given the center point of the domain, grid-cell resolution,
and the number of domain columns and rows.
"""
half_width = cell_size[0] * cols / 2
half_height = cell_size[1] * rows / 2
return BoundingBox2D(minx=center_x - half_width,
maxx=center_x + half_width,
miny=center_y - half_height,
maxy=center_y + half_height)
def get_parent_bbox_from_child_grid_spec(
child_center_x: float, child_center_y: float, child_cell_size: Tuple[float,float],
child_cols: int, child_rows: int, child_parent_res_ratio: int,
parent_left_padding: int, parent_right_padding: int,
parent_bottom_padding: int, parent_top_padding: int) -> BoundingBox2D:
"""Returns a tuple of 4 coordinates for the edges of the parent domain."""
child_bbox = get_bbox_from_grid_spec(child_center_x, child_center_y,
child_cell_size, child_cols, child_rows)
parent_cell_size_x = child_cell_size[0] * child_parent_res_ratio
parent_cell_size_y = child_cell_size[1] * child_parent_res_ratio
parent_min_x = child_bbox.minx - parent_cell_size_x * parent_left_padding
parent_min_y = child_bbox.miny - parent_cell_size_y * parent_bottom_padding
parent_max_x = child_bbox.maxx + parent_cell_size_x * parent_right_padding
parent_max_y = child_bbox.maxy + parent_cell_size_y * parent_top_padding
return BoundingBox2D(minx=parent_min_x, maxx=parent_max_x, miny=parent_min_y, maxy=parent_max_y)