Try adding "stretch x" and "stretch y" options to the "size" blocks

Following up on the great work in https://github.com/LLK/scratch-vm/issues/249 on designing and prototyping an effect that scales a sprite on each axis, @carljbowman and I have a new proposal:

It could fit nicely as menu options in the “set size” and “change size” blocks.

This is a better fit than applying it as a graphic effect. Stretching is closely related to size, and it naturally defaults to 100 (for no change), much like size (while graphic effects default to 0 for no effect).

So the proposed blocks would be:

[ Change [size / stretch x / stretch y] by [10] ] [ Set [size / stretch x / stretch y] to [100] % ]

[TheLogFather]

I’ve wondered in the past if an alternative to “stretch” might be some kind of “aspect ratio” block? – That would avoid confusion that could come about when stretching in both X & Y, as well as its ‘operational overlap’ with the “size” block.

It would also avoid potential confusion over use of “X” and “Y” (i.e. in “stretch X” and “stretch Y”) when a sprite is rotated such that its (original) X axis is no longer coincident with the X axis on screen (I’m assuming that stretching operations would be applied to the costume before rotation…)

[ZenithRogue]

What if each corner (of the rectangular field the image occupies) could be independently modeled? This would probably fit better as an extension, but would allow you to do some really color stuff.