Exemplo n.º 1
0
def scale(surface, size, dest_surface=None):
    """ scale(Surface, (width, height), DestSurface = None) -> Surface
    resize to new resolution
    """
    width, height = size
    if width < 0 or height < 0:
        raise ValueError("Cannot scale to negative size")

    c_surf = surface._c_surface

    if dest_surface is None:
        new_surf = new_surface_from_surface(c_surf, width, height)
    else:
        new_surf = dest_surface._c_surface

    if new_surf.w != width or new_surf.h != height:
        raise ValueError("Destination surface not the given width or height.")

    if c_surf.format.BytesPerPixel != new_surf.format.BytesPerPixel:
        raise ValueError(
            "Source and destination surfaces need the same format.")

    if width and height:
        with locked(new_surf):
            with locked(c_surf):
                sdl.stretch(c_surf, new_surf)

    return Surface._from_sdl_surface(new_surf)
Exemplo n.º 2
0
def scale(surface, size, dest_surface=None):
    """ scale(Surface, (width, height), DestSurface = None) -> Surface
    resize to new resolution
    """
    width, height = size
    if width < 0 or height < 0:
        raise ValueError("Cannot scale to negative size")

    c_surf = surface._c_surface

    if dest_surface is None:
        new_surf = new_surface_from_surface(c_surf, width, height)
    else:
        new_surf = dest_surface._c_surface

    if new_surf.w != width or new_surf.h != height:
        raise ValueError("Destination surface not the given width or height.")

    if c_surf.format.BytesPerPixel != new_surf.format.BytesPerPixel:
        raise ValueError(
            "Source and destination surfaces need the same format.")

    if width and height:
        with locked(new_surf):
            with locked(c_surf):
                sdl.stretch(c_surf, new_surf)

    return Surface._from_sdl_surface(new_surf)
Exemplo n.º 3
0
    if dest_surface is None:
        new_surf = new_surface_from_surface(c_surf, width, height)
    else:
        new_surf = dest_surface._c_surface

    if new_surf.w != width or new_surf.h != height:
        raise ValueError("Destination surface not the given width or height.")

    if c_surf.format.BytesPerPixel != new_surf.format.BytesPerPixel:
        raise ValueError(
            "Source and destination surfaces need the same format.")

    if width and height:
        with locked(new_surf):
            with locked(c_surf):
                sdl.stretch(c_surf, new_surf)

    return Surface._from_sdl_surface(new_surf)


def rotozoom(surface, angle, scale):
    """ rotozoom(Surface, angle, scale) -> Surface
    filtered scale and rotation
    """
    raise NotImplementedError


def scale2x(surface, dest_surface=None):
    """ scale2x(Surface, DestSurface = None) -> Surface
    specialized image doubler
    """