def bottomright_of_composite_pixel(
x, y, to_projection=coordinates.rd_projection):
topleft_x, topleft_y = topleft_of_composite_pixel(x, y)
dx, dy = settings.COMPOSITE_CELLSIZE
bottomright_x, bottomright_y = topleft_x + dx, topleft_y - dy
if to_projection is coordinates.rd_projection:
return bottomright_x, bottomright_y
return coordinates.transform(
coordinates.rd_projection, to_projection,
bottomright_x, bottomright_y)
def bottomright_of_composite_pixel(x,
y,
to_projection=coordinates.rd_projection):
topleft_x, topleft_y = topleft_of_composite_pixel(x, y)
dx, dy = settings.COMPOSITE_CELLSIZE
bottomright_x, bottomright_y = topleft_x + dx, topleft_y - dy
if to_projection is coordinates.rd_projection:
return bottomright_x, bottomright_y
return coordinates.transform(coordinates.rd_projection, to_projection,
bottomright_x, bottomright_y)
def topleft_of_composite_pixel(x, y, to_projection=coordinates.rd_projection):
"""To_projection is e.g. coordinates.google_projection."""
left, right, top, bottom = settings.COMPOSITE_EXTENT
dx, dy = settings.COMPOSITE_CELLSIZE
dy = -dy # Because top > bottom
topleft_x = left + x * dx
topleft_y = top + y * dy
if topleft_x > right - 1:
raise ValueError("x not in bounds")
if topleft_y - 1 < bottom:
raise ValueError("y not in bounds")
if to_projection is coordinates.rd_projection:
return topleft_x, topleft_y
return coordinates.transform(
coordinates.rd_projection, to_projection, topleft_x, topleft_y)
def topleft_of_composite_pixel(x, y, to_projection=coordinates.rd_projection):
"""To_projection is e.g. coordinates.google_projection."""
left, right, top, bottom = settings.COMPOSITE_EXTENT
dx, dy = settings.COMPOSITE_CELLSIZE
cells_x, cells_y = settings.COMPOSITE_CELLS
if x < 0 or x >= cells_x:
raise ValueError("x not in bounds")
if y < 0 or y >= cells_y:
raise ValueError("y not in bounds")
dy = -dy # Because top > bottom in RD
topleft_x = left + x * dx
topleft_y = top + y * dy
if to_projection is coordinates.rd_projection:
return topleft_x, topleft_y
return coordinates.transform(coordinates.rd_projection, to_projection,
topleft_x, topleft_y)