Re: [Factor-talk] images: new words to handle sprites and extract parts of an image

[John Benediktsson]

We welcome all contributions!  It's alright if you want to put these words
into a new vocabulary in extra and then migrate them somewhere else after
you get a sense of how useful they are.  Or if you feel they fit somewhere
in particular, by all means send a pull request!

You might want to check out Papier, which is a sprite-based game that is
kinda a fun example of some Factor GL stuff:

https://github.com/jckarter/papier

Should run on 0.97 and latest code:

"/path/to/papier" add-vocab-root

"papier" run



On Sun, Nov 29, 2015 at 8:48 AM, Sankaranarayanan Viswanathan <
rationalrev...@gmail.com> wrote:

> Hi,
>
> For a small game that I was making in order to get accustomed to factor,
> I needed to load textures from a sprite sheet. Basically, I wanted to
> take an image and split it into pieces of fixed dimensions. I wasn't
> able to find words to help me there (may be there are and I am unaware).
> So I ended up introducing a few new words:
>
> new-image-like: create a new empty image having properties of an
> existing image but with modified dimensions
>
> image-part: extract a part of an image into a separate image
>
> generate-sprite-sheet: given an image, produce a sequence of images
> having fixed width and heights
>
> These new words can be seen implemented here:
>
> https://github.com/rationalrevolt/factor-practice/blob/master/images/sprites/sprites.factor
>
> A small test program using these words is present here:
>
> https://github.com/rationalrevolt/factor-practice/blob/master/sprite-test/sprite-test.factor
>
> If these are useful, could someone recommend a vocabulary that could
> contain them? The words new-image-like and image-part could reside in
> the images vocab. I'm not sure where the generate-sprite-sheet word
> could fit in or if it is sufficiently useful to include.
>
> Thanks,
> Sankar
>
>
>
> --
> ___
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> Factor-talk@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/factor-talk
>
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Re: [Factor-talk] images: new words to handle sprites and extract parts of an image

[Joe Groff]

I don't believe I ever implemented atlases in that demo. I did write a
quick and dirty atlas generator in extra/images/atlas you might be able to
start with:

http://docs.factorcode.org/content/vocab-images.atlas.html

On Monday, November 30, 2015, John Benediktsson  wrote:

> We welcome all contributions!  It's alright if you want to put these words
> into a new vocabulary in extra and then migrate them somewhere else after
> you get a sense of how useful they are.  Or if you feel they fit somewhere
> in particular, by all means send a pull request!
>
> You might want to check out Papier, which is a sprite-based game that is
> kinda a fun example of some Factor GL stuff:
>
> https://github.com/jckarter/papier
>
> Should run on 0.97 and latest code:
>
> "/path/to/papier" add-vocab-root
>
> "papier" run
>
>
>
> On Sun, Nov 29, 2015 at 8:48 AM, Sankaranarayanan Viswanathan <
> rationalrev...@gmail.com
> > wrote:
>
>> Hi,
>>
>> For a small game that I was making in order to get accustomed to factor,
>> I needed to load textures from a sprite sheet. Basically, I wanted to
>> take an image and split it into pieces of fixed dimensions. I wasn't
>> able to find words to help me there (may be there are and I am unaware).
>> So I ended up introducing a few new words:
>>
>> new-image-like: create a new empty image having properties of an
>> existing image but with modified dimensions
>>
>> image-part: extract a part of an image into a separate image
>>
>> generate-sprite-sheet: given an image, produce a sequence of images
>> having fixed width and heights
>>
>> These new words can be seen implemented here:
>>
>> https://github.com/rationalrevolt/factor-practice/blob/master/images/sprites/sprites.factor
>>
>> A small test program using these words is present here:
>>
>> https://github.com/rationalrevolt/factor-practice/blob/master/sprite-test/sprite-test.factor
>>
>> If these are useful, could someone recommend a vocabulary that could
>> contain them? The words new-image-like and image-part could reside in
>> the images vocab. I'm not sure where the generate-sprite-sheet word
>> could fit in or if it is sufficiently useful to include.
>>
>> Thanks,
>> Sankar
>>
>>
>>
>> --
>> ___
>> Factor-talk mailing list
>> Factor-talk@lists.sourceforge.net
>> 
>> https://lists.sourceforge.net/lists/listinfo/factor-talk
>>
>
>
--
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Use one codebase in this all-in-one HTML5 development environment.
Design, debug & build mobile apps & 2D/3D high-impact games for multiple OSs.
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Re: [Factor-talk] images: new words to handle sprites and extract parts of an image

[Björn Lindqvist]

Perhaps you can add it to some of the vocabs in the images.*
hierarchy? I think images.tesselation or images.processing would be
suitable. Also see the tesselate word, if I'm not mistaken it does the
same thing as your generate-sprite-sheet word. But there is nothing
like your image-part and new-image-like words afaict, so those would
be useful. But maybe you should rename image-part to crop-image?
Cutting a smaller image from an existing one is a cropping operation.

> For a small game that I was making in order to get accustomed to factor,
> I needed to load textures from a sprite sheet. Basically, I wanted to
> take an image and split it into pieces of fixed dimensions. I wasn't
> able to find words to help me there (may be there are and I am unaware).
> So I ended up introducing a few new words:
>
> new-image-like: create a new empty image having properties of an
> existing image but with modified dimensions
>
> image-part: extract a part of an image into a separate image
>
> generate-sprite-sheet: given an image, produce a sequence of images
> having fixed width and heights
>
> These new words can be seen implemented here:
> https://github.com/rationalrevolt/factor-practice/blob/master/images/sprites/sprites.factor
>
> A small test program using these words is present here:
> https://github.com/rationalrevolt/factor-practice/blob/master/sprite-test/sprite-test.factor
>
> If these are useful, could someone recommend a vocabulary that could
> contain them? The words new-image-like and image-part could reside in
> the images vocab. I'm not sure where the generate-sprite-sheet word
> could fit in or if it is sufficiently useful to include.



-- 
mvh/best regards Björn Lindqvist

--
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Give your users amazing mobile app experiences with Intel(R) XDK.
Use one codebase in this all-in-one HTML5 development environment.
Design, debug & build mobile apps & 2D/3D high-impact games for multiple OSs.
http://pubads.g.doubleclick.net/gampad/clk?id=254741911=/4140
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