No Easy way to flip a sprite?

[cycomachead]

Am I missing something?

Is there no command to either flip a sprite (x or y axis) via a command block OR using the costume editor?

If not, I think it would be great if one of the Berkeley students could work on this because it's a PERFECT teaching exercise. :)

[kach]

Erm. I'm technically responsible for the paint editor one.

[jmoenig]

Scratch and Snap let you flip costumes by setting the sprite's rotation mode to "only face left/right". To accomplish this the Costume constructor has a method named "flipped()" - in line 5270 of objects.js. This method returns a copy of the costume that is mirrored along a vertical axis. Since we don't yet expose costumes as first-class members in Snap there is not yet a block for this. But - as the function is already there - it is trivial to add one. :)

[cycomachead]

Oh cool, thanks! :)

Would it make the most sense to add this as an option to the current
graphics effects block or to create a new one? (Though that seems like
clutter, IMO.)

Michael Ball
http://www.michaelballphoto.com
Photos & iPhone Apps!

On Tue, Jan 28, 2014 at 11:26 PM, Jens Mönig notifications@github.comwrote:

Scratch and Snap let you flip costumes by setting the sprite's rotation
mode to "only face left/right/. To accomplish this the Costume constructor
has a method named "flipped()" - in line 5270 of objects.js. This method
returns a copy of the costume that is mirrored along a vertical axis. Since
we don't yet expose costumes as first-class members in Snap there is not
yet a block for this. But - as the function is already there - it is
trivial to add one. :)

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/314#issuecomment-33562005
.

[brianharvey]

The left-right button is okay for rotation around the vertical axis, although sometimes I want to change the costume permanently because the picture I clipped from Google Images faces left and so if I use it as a costume the sprite moves backwards from the way it's facing. But none of this lets us flip around the horizontal axis.

With respect to the block question, I think that flipping in the Paint Editor is a permanent change to the underlying costume, but flipping programmatically is indeed a graphics effect.

[larsemil]

👍 to brianharvey

[kach]

#470

[cycomachead]

I'm going to close this since costume editing is what a lot of people like to use. :)

(Though, eventually, a temporary/programatic solution would be great.)