tuxpaint-devel

[Tuxpaint-devel] Comments about some magic tools

[Pere P. i C. <pe...@fo...>]

Hi all! 

Some bugs, enhancement requests and ideas:


Enhancement requests:

Folder: Can be improved if click is used to select the corner, then drag
to were he want the corner go, do some calculation about how a sheet
should be plyed to get the corner there. You also can do a rough
"preview" like flower does. Then, in mouse release, draw it.

Some maths suposing 0,0 corner having to go to 100,200:
half point between 0,0 and 100,200 = (0+100)/2,(0+200)/2 = 50,100
Here you should check if there will not be a "by zero" division, then
0x point = 0,(50 + 100*100/50) = 0,250
0y point = (100 + 50*50/100),0 = 125,0

so you end up with lines 
from 125,0 to 100,200
from 125,0 to 0,250
from 0,250 to 100,200



Black and white: Can be converted to "color and white" just picking the
color like other magic tools do. The same is valid for threshold.



Bugs:

Flower, just noticed this: if you draw a horizontal flower you don't get
leafs.

Jigsaw, works right at 800x600, but at 640x480 I get pieces cutted at
the edge, and in bigger screens, the jigsaw is covering just the 800x600
topleft portion of the image

 

An idea for new magic tools:
I've been always fascined by those animations were a plant grows from
zero, or a flower opens, or clouds running accross the sky, etc. Theese
can be implemented in two ways:

a)  A sequence of some images, starting on mouse click, showing the next
image each second and drawing the image present on mouse release.
Depending on the animations, they can be positioned on mouse click or
aligned to a edge of the draw

b)  A computed animation like some screensavers do, starting on mouse
click and ending on mouse release. Even the direction of the animation
(when possible) can be controlled on mouse drag.



Hope this helps
Pere

[Tuxpaint-devel] Comments about some magic tools

[Andrew C. <aka...@gm...>]

> Hi all!
>
> Some bugs, enhancement requests and ideas:
>
>
> Enhancement requests:
>
> Folder: Can be improved if click is used to select the corner, then drag
> to were he want the corner go, do some calculation about how a sheet
> should be plyed to get the corner there. You also can do a rough
> "preview" like flower does. Then, in mouse release, draw it.
>
> Some maths suposing 0,0 corner having to go to 100,200:
> half point between 0,0 and 100,200 = (0+100)/2,(0+200)/2 = 50,100
> Here you should check if there will not be a "by zero" division, then
> 0x point = 0,(50 + 100*100/50) = 0,250
> 0y point = (100 + 50*50/100),0 = 125,0
>
> so you end up with lines
> from 125,0 to 100,200
> from 125,0 to 0,250
> from 0,250 to 100,200
>
>
>
> Black and white: Can be converted to "color and white" just picking the
> color like other magic tools do. The same is valid for threshold.


I'm currently working on converting my current tools to the new api but
thats something ill definitely put on my list of things to do.

>
>
>
>
> Bugs:
>
> Flower, just noticed this: if you draw a horizontal flower you don't get
> leafs.
>
> Jigsaw, works right at 800x600, but at 640x480 I get pieces cutted at
> the edge, and in bigger screens, the jigsaw is covering just the 800x600
> topleft portion of the image


Ah my bad, I didnt think about people using different resolutions. After
discussing things with bill and caroline I've changed this feature to work
from a starter image instead (jigsaw_3x3.png and jigsaw_5x5.png on the cvs)
and deleted the magic tool. I've got plans for a more "artistic" jigsaw
which will take the form of a magic tool but that might be some way down the
road, so for the time being ive removed the jigsaw magic tool from the cvs
and replaced it with the starter images.


>
>
>
> An idea for new magic tools:
> I've been always fascined by those animations were a plant grows from
> zero, or a flower opens, or clouds running accross the sky, etc. Theese
> can be implemented in two ways:
>
> a)  A sequence of some images, starting on mouse click, showing the next
> image each second and drawing the image present on mouse release.
> Depending on the animations, they can be positioned on mouse click or
> aligned to a edge of the draw
>
> b)  A computed animation like some screensavers do, starting on mouse
> click and ending on mouse release. Even the direction of the animation
> (when possible) can be controlled on mouse drag.
>
>
>
> Hope this helps
> Pere
>
>
>
>
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Re: [Tuxpaint-devel] Comments about some magic tools

[Bill K. <nb...@so...>]

On Mon, Jul 14, 2008 at 06:57:02PM +0200, Pere Pujal i Carabantes wrote:
> Folder: Can be improved if click is used to select the corner, then drag
> to were he want the corner go, do some calculation about how a sheet
> should be plyed to get the corner there. You also can do a rough
> "preview" like flower does. Then, in mouse release, draw it.

Good idea!


<snip> 
> Black and white: Can be converted to "color and white" just picking the
> color like other magic tools do. The same is valid for threshold.

Also a good idea!


> Flower, just noticed this: if you draw a horizontal flower you don't get
> leafs.

That's a design issue. :)  But I guess I can add a bug report about it,
and see what we can do, some day. :)


> Jigsaw, works right at 800x600, but at 640x480 I get pieces cutted at
> the edge, and in bigger screens, the jigsaw is covering just the 800x600
> topleft portion of the image

Andrew has just gone ahead and created a pair of Jigsaw starter images.
We discussed how he could implement a Magic tool that paints the
Jigsaw pieces onto the image, similar to how Bricks works.


<snip>
> An idea for new magic tools:
> I've been always fascined by those animations were a plant grows from
> zero, or a flower opens, or clouds running accross the sky, etc. Theese
> can be implemented in two ways:
> 
> a)  A sequence of some images, starting on mouse click, showing the next
> image each second and drawing the image present on mouse release.
> Depending on the animations, they can be positioned on mouse click or
> aligned to a edge of the draw

Right now there's no way to fire off timer-based events like this
using the Magic Tool API.  Perhaps we can consider this in the future.

I think we have enough things to iron out in the meantime, though!


> b)  A computed animation like some screensavers do, starting on mouse
> click and ending on mouse release. Even the direction of the animation
> (when possible) can be controlled on mouse drag.

I'm not 100% sure I understand this one.  Have you looked at the animated
and directional brushes with the Paint and Line tools?  The cat, for example,
has different frames of it running around, and it leaves a trail of cats
that chase your mouse pointer. :)

-- 
-bill!
"Tux Paint" - free children's drawing software for Windows / Mac OS X / Linux!
Download it today!  http://www.tuxpaint.org/

Re: [Tuxpaint-devel] Comments about some magic tools

[Pere P. i C. <pe...@fo...>]

Hi!

Bill Kendrick wrote: 
> On Mon, Jul 14, 2008 at 06:57:02PM +0200, Pere Pujal i Carabantes wrote:
  
> 
> We discussed how he could implement a Magic tool that paints the
> Jigsaw pieces onto the image, similar to how Bricks works.

I think it would be better to control in a way similar as waves does: 
click or drag mouse to bottom-left to get a 2x2 puzzle, click or drag 
to upper-right to get a 5x4 one. 
Change on the intermediate states as long as you click or drag the mouse 
on the screen.
Be sure to not draw a jigsaw with _lots_ of pieces or nobody will cut it :).


> > b)  A computed animation like some screensavers do, starting on mouse
> > click and ending on mouse release. Even the direction of the animation
> > (when possible) can be controlled on mouse drag.
> >     
> 
> I'm not 100% sure I understand this one.

I mean something like the 4 or 5 first xscreensavers in this demo does:
http://www.youtube.com/watch?v=SadVTuWI6cw
They begin to draw on a part of the screen (the image on tuxpaint) and
continue filling the screen until someone stops them (mouse release on
my idea)

Supose a spiral: you start drawing at mouse click, as soon as you
compute a part of the spiral, you draw this part. The user will see the
spiral growing (like an animation), and will be able to stop the grow on
mouse release.
Even you can deform the way this spiral grows on mouse drag by atracting
the center or the spires to the new mouse position.


Yours
Pere