Scratch

Snowdrift wrote:

Why not cloud-variables with a [report] button on them?

Or just a report a website system would work.

Magnie wrote:

GeonoTRON2000 wrote:

Here's a semi-creepy image I made in ScratchPaint:

Code:

long-code

I would suggest using this: http://en.wikipedia.org/wiki/Run-length_encoding. 

Can you give an example, say the long code is in the message variable?
EDIT: I mean of how to implement it, since I have no idea...

Last edited by GeonoTRON2000 (2012-12-09 00:03:50)

Magnie wrote:

GeonoTRON2000 wrote:

Magnie wrote:

I would suggest using this: http://en.wikipedia.org/wiki/Run-length_encoding. 

Can you give an example, say the long code is in the message variable?
EDIT: I mean of how to implement it, since I have no idea...

Basically you would implement it the same way as with how you already have done it. But it would check the number, then the type of color and then stamp the number of times the number variable would hold.

This would be the compressed version of your code:

Code:

314 F 1 2 93 F 4 2 89 F 9 2 84 F 3 2 8 F 8 2 74 F 3 2 17 F 1 2 74 F 1 2 20 F 2 2 71 F 2 2 15 F 3 2 4 F 1 2 69 F 2 2 6 F 1 2 8 F 4 2 5 F 1 2 68 F 1 2 6 F 4 2 4 F 4 2 1 F 2 2 5 F 1 2 66 F 2 2 5 F 2 2 1 F 2 2 4 F 1 2 5 F 1 2 6 F 1 2 65 F 1 2 5 F 2 2 3 F 1 2 4 F 1 2 5 F 1 2 7 F 1 2 64 F 1 2 5 F 1 2 4 F 1 2 4 F 1 2 5 F 1 2 7 F 1 2 64 F 1 2 5 F 1 2 4 F 1 2 4 F 1 2 5 F 1 2 8 F 1 2 62 F 2 2 5 F 1 2 4 F 1 2 4 F 1 2 5 F 1 2 8 F 1 2 62 F 1 2 6 F 1 2 4 F 1 2 4 F 2 2 3 F 2 2 8 F 1 2 62 F 1 2 6 F 2 2 3 F 1 2 4 F 4 2 1 F 1 2 10 F 1 2 61 F 1 2 7 F 5 2 7 F 3 2 10 F 1 2 60 F 2 2 32 F 1 2 60 F 1 2 33 F 1 2 60 F 1 2 24 F 1 2 8 F 1 2 59 F 2 2 3 F 22 2 8 F 1 2 59 F 1 2 3 F 4 2 1 F 1 2 3 F 1 2 5 F 1 2 2 F 1 2 3 F 1 2 8 F 1 2 59 F 1 2 5 F 1 2 2 F 1 2 3 F 1 2 5 F 1 2 2 F 1 2 3 F 1 2 8 F 1 2 59 F 1 2 5 F 2 2 1 F 1 2 3 F 1 2 5 F 1 2 3 F 1 2 2 F 1 2 8 F 1 2 59 F 1 2 6 F 3 2 3 F 1 2 5 F 1 2 3 F 1 2 2 F 1 2 7 F 2 2 60 F 1 2 6 F 3 2 1 F 2 2 5 F 1 2 3 F 1 2 2 F 1 2 7 F 1 2 61 F 1 2 8 F 4 2 5 F 1 2 2 F 2 2 2 F 1 2 7 F 1 2 61 F 2 2 10 F 5 2 1 F 1 2 2 F 2 2 1 F 2 2 6 F 2 2 62 F 2 2 14 F 8 2 6 F 2 2 64 F 2 2 18 F 2 2 6 F 2 2 67 F 1 2 23 F 3 2 69 F 1 2 20 F 3 2 72 F 5 2 11 F 5 2 78 F 13 2 11 F 3 4 8 F 1 4 83 F 1 4 1 F 1 4 8 F 1 4 83 F 1 4 1 F 2 4 7 F 1 4 83 F 1 4 2 F 1 4 7 F 1 4 72 F 2 4 9 F 1 4 1 F 2 4 7 F 1 4 10 F 2 4 36 F 3 4 21 F 2 4 3 F 1 4 5 F 3 4 8 F 1 4 5 F 1 4 3 F 3 4 29 F 1 4 5 F 2 4 1 F 2 4 4 F 2 4 1 F 1 4 9 F 1 4 1 F 2 4 2 F 3 4 5 F 4 4 3 F 11 4 2 F 5 4

So the first number would be how many times to stamp the color 'F' (I think that's either white or a blank space). Then it would stamp the 2 once, 'F' 93 times, etc.

The problem is delimiting, since Scratch doesn't have a split function or regular expression support (you could use ^(([0-9+]) ([0-9A-Za-z]))+$.)  I'm stumped, but if anyone else has a suggestion, feel free to suggest.

nXIII wrote:

GeonoTRON2000 wrote:

The problem is delimiting, since Scratch doesn't have a split function or regular expression support (you could use ^(([0-9+]) ([0-9A-Za-z]))+$.)  I'm stumped, but if anyone else has a suggestion, feel free to suggest.

That regular expression would validate the data. It would not split it into tokens. (The three captures would be 1) the last pair 2) the number of the last pair and 3) the symbol of the last pair.) In Scratch, you can just go through and add each word (separated by spaces) to a list, and do whatever you want with the list.

EDIT: That particular regular expression wouldn't even correctly validate the data, as it checks for a single character (either a digit or a plus sign) followed by a space followed by another single character, and expects no spaces between pairs. Try this one: /^\d+\s+[\da-f](?:\s+\d+\s+[\da-f])*$/i

If you intake the data as a string, how would you decode it, though?

nXIII wrote:

GeonoTRON2000 wrote:

If you intake the data as a string, how would you decode it, though?

I just told you. You iterate through the string and keep track of the current word, and when you hit a space or the end of the string you add the current word to the list and set it to an empty string.

I wrote:

In Scratch, you can just go through and add each word (separated by spaces) to a list, and do whatever you want with the list.

Got it.  Thanks!

GeonoTRON2000 wrote:

nXIII wrote:

GeonoTRON2000 wrote:

If you intake the data as a string, how would you decode it, though?

I just told you. You iterate through the string and keep track of the current word, and when you hit a space or the end of the string you add the current word to the list and set it to an empty string.

I wrote:

In Scratch, you can just go through and add each word (separated by spaces) to a list, and do whatever you want with the list.

Got it.  Thanks!

What we could add is the ability to choose the size of you image, so the code length could be come a variable opposed to always bieng the size of the screen. For example:
1/6 of the screen: Limit the length of the code to X (Variable)
1/4 of the screen: limit the length of the code to Y (Variable)
Etc.

I've implemented run-length decoding on this project, so now I just have to figure out a way to successfully encode data (I tried before, but it failed epically.)

EDIT: encoding successful, have fun with CompressedPaint

Last edited by GeonoTRON2000 (2012-12-09 14:55:16)

GeonoTRON2000 wrote:

I've implemented run-length decoding on this project, so now I just have to figure out a way to successfully encode data (I tried before, but it failed epically.)

EDIT: encoding successful, have fun with CompressedPaint

Great! What do you think we should name the collab

Cloud variables are only per-project, so cloud variables would only be able to be accessed by the project it belongs to.

jji7skyline wrote:

Cloud variables are only per-project, so cloud variables would only be able to be accessed by the project it belongs to.

And one of my solutions was that you could use an ask block that asks for your web page code and then it'll save it to a cloud list.

Bumpy bump

GeonoTRON2000 wrote:

If we expand upon this, we could figure out a way to make a kind of Bit Art, but with multiple colors, and cloud variables, all in scratch...

Three cloud lists. x, y, color.