Re: [pygame] Mask problem

2010/8/23 jug <jug@xxxxxxxxxxxxxx>

"mask.outline(): Returns a list of points of the outline of the first object it comes across in a Mask" (docs)
-> this method gives you all points that build the outline of an object on the mask. Thus, all these
points are set on the mask. If you want to print all pixels of the mask, you need to loop over the size:

w, h = mask.get_size()
for x in xrange(w):
....for y in xrange(h):
........print mask.get_at(x,y),
....print #(optional)

Julian

Hi all:

I have missunderstand something from masks, this is my problem:

I have a program that rounds frames in a minimum rects and saves the coordinates of them in a file, that way I know where, in a picture, are the frames of a animation and can get them easily.

I took all the frames of an animation in this way (been an animation the secuence of images of p.e. a spaceship images turning in Y-axis to go left or rigth in X-axis)

# Gets all the frames of a animation from the image
def __getFrameImages__(self, image, imagesIndexInY, coords):
indexes = coords.getCoordsInY(imagesIndexInY) # This works fine, the images are getted and drawed well
for index in indexes: # Only to show that I get many subsurfaces from a big surface (a .bmp file)
self.images += [image.subsurface(index)]

After take all images I make masks for each image that way:

# Makes masks for all the frames
def __makeMasks__(self):
for image in self.images:
mask = pygame.mask.from_surface(image, consts.MAGENTA)
temp = "" # LOG
for x in mask.outline(): # LOG
temp += `mask.get_at(x)` # LOG
print `temp` #LOG
self.masks += [mask]

been consts.MAGENTA = 0xFF00FF the key color of the image.

Well, when running it, the output are allways that way:

'111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111'

So I undestand that, been no 0's, the mask is all the rect... so I'm doing something wrong, any ideas?
--
Nota: Tildes omitidas para evitar incompatibilidades.

:wq