Scratch

JTxt wrote:

If Scratch 2.0 is built with Flash, (which I believe it is) it would likely be easy to have alpha channel images... (many transparency levels.)  But it would need a more powerful image editor... And it raises issues like:
Is a sprite touching even if it touches with almost invisible part of the costume?  (It's easy to accidentally leave behind almost invisible parts when erasing.)

And there's performance/bandwidth issues...

It takes more time to draw alpha channel images, and it adds up fast with projects with many or large sprites, with games that are supposed to run fast. And the files can be much larger.

But yes, I think it would be cool.   

ALSO,  Flash 10 / flex 3.2 has 3d acceleration!  (Can use your computer's 3d card to draw images, and alpha transparencies fast.)

It may be possible to draw scratch sprites that way.  Which would be FAST.  (They don't have to use the 3d capabilities, but it would also be fast to scale and rotate sprites, and it will look smooth.)

Here's an example:
http://polygeek.com/1508_flex_flash-10- … components
http://opensource.adobe.com/wiki/displa … ts+Support

Last edited by JTxt (2010-07-21 11:02:37)

mariobrosrule wrote:

Huh? isnt that the same as ghost????

Sort-of, but no.  As explained above, ghost only changes the transparency for the whole image.

Scratch costumes only have one "color" for transparency now, so the edges of costumes look pixelated (ragged, not smooth.) a part of the image is either completely see-through, or not at all.... which is not realistic for many object like glass or smoke.

An alpha channel with the images allow for many "colors" for transparencies. 

So it can draw object like glass and smoke more realistically: you can see through a little on parts... and all the way through on other parts.

Last edited by JTxt (2010-07-21 11:35:03)

MyHFC wrote:

coolstuff wrote:

Yep, that's definitely something I want. I think it should have been added at the beginning, but now is better than never!

Think of the projects we could create    I'm curious, though, how this would affect colour sensing - would the sensing neglect transparency, always considering it a solid colour? Or would it be consider what's behind it as a part of the colour sensing?

It would neglect the transparency. It would make it not transparent

That might be a little confusing, though either way would be confusing (because with transparencies the colour would vary so much, but without it the colour sensing doesn't exactly match up with what's on the screen). Personally, I'd like the former.

It's happened to me too and somthing that glows (like alien glow on cooltext.com) turns into a blob of that color.

I support!

I support! I've needed this at times.

Well with colour sensing, it should sense every colour in the pixel. So if a sprite was a red square and a diffrent sprite was a blue square, and they both had complete transparency of 50% then the colour sensor picks up red and blue.


And stamping? How would it work?

I don't get what you mean...

coolstuff wrote:

MyHFC wrote:

coolstuff wrote:

Yep, that's definitely something I want. I think it should have been added at the beginning, but now is better than never!

Think of the projects we could create    I'm curious, though, how this would affect colour sensing - would the sensing neglect transparency, always considering it a solid colour? Or would it be consider what's behind it as a part of the colour sensing?

It would neglect the transparency. It would make it not transparent

That might be a little confusing, though either way would be confusing (because with transparencies the colour would vary so much, but without it the colour sensing doesn't exactly match up with what's on the screen). Personally, I'd like the former.

yeah i agree it is a bit confusing like the neglect<set{confusing  }to( 10
but that's kinda cool' i don't relly about the rest would color fish eye mosaic ect
do any thing

fg123 wrote:

Did someone post this for scratch suggest yet?

I'm out of votes.

pomaranian wrote:

how do u get ghost effect? :p i dont know how

To get the ghost effect, you go to the "looks" section, and find the blocks that say "change [color v] effect by (  )" and "set [color v] effect to". To get the ghost effect, simply click on the dropdown arrow, and select "ghost" from the list 

You know, this really is a great suggestion... It can make way for antialiasing, which will mean smoother sprites for everyone! I believe I suggested that some time ago, but I appear to have lost the topic