I *did* create the images with Gimp, and they do have transparent
backgrounds. (Did you view the image link I posted?)
I have used colorkeys in the past, but the problem here is that there are
semi-transparent (not fully opaque) pixels in the images (again see the
image I linked to), and when you draw these images to newly created surfaces
(ie new = pygame.Surface(); new.blit(loadedimage)) the pixels are no longer
transparent. Hence why I need to create surfaces with completely transparent
backgrounds, instead of the default black.
Here's my code for reference:
import os
import pygame
from pygame.locals import *
IMAGE_CACHE = {}
def load_image(filename):
if filename not in IMAGE_CACHE:
img = pygame.image.load(os.path.join("data",
filename)).convert_alpha()
IMAGE_CACHE[filename] = img
return IMAGE_CACHE[filename]
def load_strip(filename, width):
imgs = []
img = load_image(filename)
for x in range(img.get_width()/width):
*i = pygame.Surface((width, img.get_height()))***
*i.blit(img, (-x*width, 0))*
imgs.append(i)
return imgs
Cheers,
On Thu, Aug 20, 2009 at 9:05 PM, Henrique Nakashima <
[email protected]> wrote:
> Transparency is often a problem because image editors and viewers not
> always display the same sorts of transparency.
>
> To create a transparent background, load it from an image with
> transparency. Png supports it, but not all png editors do. I managed to get
> transparency done by using GIMP (http://www.gimp.org/). In this editor,
> you need to add a transparency channel to the image, select the part that
> you want to be transparent and delete it (with the Delete key). This usually
> does the trick, but people more experient with image editing might have
> better ways.
>
> Pygame can also do transparency by using color keys, which means defining a
> specific RGB color that will represent transparent pixel. In your example,
> that would be white (0, 0, 0). Use
> http://www.pygame.org/docs/ref/surface.html#Surface.set_colorkey for this
> kind of transparency.
>
>
> On Thu, Aug 20, 2009 at 22:46, pymike <[email protected]> wrote:
>
>> Hi,
>>
>> I have a function that loads image
>> strips<http://pymike.pynguins.com/downloads/player-run.png>and returns the
>> images in lists. To do this, I create new surfaces and blit
>> the strips to them at an offset.
>>
>> My question is: Is there a way to create surfaces with transparent
>> backgrounds? The images have quite a bit of semi-transparent pixels in them,
>> so I can't use colorkeys.
>>
>> Thanks,
>>
>> --
>> - pymike
>>
>
>
--
- pymike
