resize the sprites by dragging the corner

Hi, I would like to resize the sprites in game by dragging the corner of the sprite while maintaining its proportions, as you do in the editor by holding down Shift, does anyone know how to do it?

I did an example like this for someone, you can scale the sprite there.

I think this will show you the way.

File c3p

I did an example like this for someone, you can scale the sprite there.

I think this will show you the way.

File c3p

Thank you very much, it's not exactly how I wanted but it's a good start to work on it, I ask you one thing, at the moment when I release the touch the object remains enlarged, when I go to change the size again but it goes back to how it was originally to start editing from how I left it, do you know how this could be resolved? I can't find a way to see the actual scale value of the sprite, or to pass it into a variable to keep it stored

You can check the sprite properties (.ImageHeight) and (.Height) to see how much the width has been increased, and you can do the same with the height. The rest is math.

I can't seem to open the link so I have no idea if this is similar or not, but here is one way to do it.

dropbox.com/scl/fi/igcw9hcfb9uy3esjxsga7/aspect_resize_handles.capx

Absolutely Epic! Thanks so much R0J0hound!

Like I said it's perfect, but I tried to understand the code and I couldn't, could you explain to me what's happening? It's probably a question of mathematics that I don't know?

Sure.

When dragging a handle it limits the motion to be along a line.

Line equation:

Y=slope*(x-x0)+y0

Slope calculation uses the ratio of height to width.

Slope = changeInY/changeInX = originalHeight/originalWidth

The slope of the line should be negative for two of the points so I did

(int(mid(“2002”,self.iid,1))-1)

But either of these would be the same

((Self.iid=0 | self.iid=3)?1:-1)

(int((Self.iid+1)/2)%2*2-1)

Basically converting the index 0-3 to a negative or positive in a specified way.

0123 -> 0110 -> 1,-1,-1,1

The handles are laid out like this:

0-1
 /
2-3

//make a family with the handles

var slope=0

handle: on drag start
pick family instance 3-handle.iid
-- set slope to (sprite.y-family.y)/(sprite.x-family.x)

handle is dragging
pick family instance 3-handle.iid
-- handle: set y to slope*(self.x-family.x)+family.y
-- sprite: set size to abs(handle.x-family.x), abs(handle.y-family.y)
-- sprite: set position to (handle.x+family.x)/2, (handle.y+family.y)/2

pick handle instance 0
handle is not dragging
-- set pos to sprite.bboxLeft, sprite.bboxTop

pick handle instance 1
handle is not dragging
-- set pos to sprite.bboxRight, sprite.bboxTop

pick handle instance 2
handle is not dragging
-- set pos to sprite.bboxLeft, sprite.bboxBottom

pick handle instance 3
handle is not dragging
-- set pos to sprite.bboxRight, sprite.bboxBottom

I opted to just have it work without flipping or mirroring. Hence the abs. One solution could be to record the sign of the width and height of the sprite into variable and apply that again when setting the sign. There may be a more compact way to do it though.

Ok I did it, thank you very much!