def smoothscale(surface, size, dest_surface=None):
""" smoothscale(Surface, (width, height), DestSurface = None) -> Surface
scale a surface to an arbitrary size smoothly
"""
width, height = size
if width < 0 or height < 0:
raise ValueError("Cannot scale to negative size")
c_surf = surface._c_surface
bpp = c_surf.format.BytesPerPixel
if bpp < 3 or bpp > 4:
raise ValueError("Only 24-bit or 32-bit surfaces can be"
" smoothly scaled")
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 (width * bpp + 3) // 4 > new_surf.pitch:
raise ValueError("SDL Error: destination surface pitch not"
" 4-byte aligned.")
if width and height:
with locked(new_surf):
with locked(c_surf):
if c_surf.w == width and c_surf.h == height:
# Non-scaling case, so just copy the correct pixels
c_pitch = c_surf.pitch
n_pitch = new_surf.pitch
srcpixels = ffi.cast('uint8_t*', c_surf.pixels)
destpixels = ffi.cast('uint8_t*', new_surf.pixels)
step = width * bpp
for y in range(0, height):
offset_n = y * n_pitch
offset_c = y * c_pitch
destpixels[offset_n:offset_n +
step] = srcpixels[offset_c:offset_c + step]
else:
sdl.scalesmooth(c_surf, new_surf)
if dest_surface:
return dest_surface
return Surface._from_sdl_surface(new_surf)
def smoothscale(surface, size, dest_surface=None):
""" smoothscale(Surface, (width, height), DestSurface = None) -> Surface
scale a surface to an arbitrary size smoothly
"""
width, height = size
if width < 0 or height < 0:
raise ValueError("Cannot scale to negative size")
c_surf = surface._c_surface
bpp = c_surf.format.BytesPerPixel
if bpp < 3 or bpp > 4:
raise ValueError("Only 24-bit or 32-bit surfaces can be"
" smoothly scaled")
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 (width * bpp + 3) // 4 > new_surf.pitch:
raise ValueError("SDL Error: destination surface pitch not"
" 4-byte aligned.")
if width and height:
with locked(new_surf):
with locked(c_surf):
if c_surf.w == width and c_surf.h == height:
# Non-scaling case, so just copy the correct pixels
c_pitch = c_surf.pitch
n_pitch = new_surf.pitch
srcpixels = ffi.cast('uint8_t*', c_surf.pixels)
destpixels = ffi.cast('uint8_t*', new_surf.pixels)
step = width * bpp
for y in range(0, height):
offset_n = y * n_pitch
offset_c = y * c_pitch
destpixels[offset_n:offset_n + step] = srcpixels[offset_c:offset_c + step]
else:
sdl.scalesmooth(c_surf, new_surf)
if dest_surface:
return dest_surface
return Surface._from_sdl_surface(new_surf)
def smoothscale(surface, size, dest_surface=None):
""" smoothscale(Surface, (width, height), DestSurface = None) -> Surface
scale a surface to an arbitrary size smoothly
"""
width, height = size
if width < 0 or height < 0:
raise ValueError("Cannot scale to negative size")
c_surf = surface._c_surface
bpp = c_surf.format.BytesPerPixel
if bpp < 3 or bpp > 4:
raise ValueError("Only 24-bit or 32-bit surfaces can be"
" smoothly scaled")
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 (width * bpp + 3) // 4 > new_surf.pitch:
raise ValueError("SDL Error: destination surface pitch not"
" 4-byte aligned.")
if width and height:
with locked(new_surf):
with locked(c_surf):
if c_surf.w == width and c_surf.h == height:
pitch = c_surf.pitch
# Trivial case
srcpixels = ffi.cast('uint8_t*', c_surf.pixels)
destpixels = ffi.cast('uint8_t*', new_surf.pixels)
destpixels[0:height * pitch] = srcpixels[0:height * pitch]
else:
sdl.scalesmooth(c_surf, new_surf)
if dest_surface:
return dest_surface
return Surface._from_sdl_surface(new_surf)
def smoothscale(surface, size, dest_surface=None):
""" smoothscale(Surface, (width, height), DestSurface = None) -> Surface
scale a surface to an arbitrary size smoothly
"""
width, height = size
if width < 0 or height < 0:
raise ValueError("Cannot scale to negative size")
c_surf = surface._c_surface
bpp = c_surf.format.BytesPerPixel
if bpp < 3 or bpp > 4:
raise ValueError("Only 24-bit or 32-bit surfaces can be"
" smoothly scaled")
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 (width * bpp + 3) // 4 > new_surf.pitch:
raise ValueError("SDL Error: destination surface pitch not"
" 4-byte aligned.")
if width and height:
with locked(new_surf):
with locked(c_surf):
if c_surf.w == width and c_surf.h == height:
pitch = c_surf.pitch
# Trivial case
srcpixels = ffi.cast('uint8_t*', c_surf.pixels)
destpixels = ffi.cast('uint8_t*', new_surf.pixels)
destpixels[0:height * pitch] = srcpixels[0:height * pitch]
else:
sdl.scalesmooth(c_surf, new_surf)
if dest_surface:
return dest_surface
return Surface._from_sdl_surface(new_surf)
