Hello,
I 'd like to turn around a sprite object, so I use a new Matrix (-1, 0, 0, 1, sprite.x, sprite.y) to do this.
But by Xscaling -1 it turnalso from the width of the Object.
Explanation : My Sprite is at 0,0 with width of 100. when I use my matrix it’s again at pos 0,0, but with width -100.
You can say that it’s easy, you just have to add the sprite.width to the sprite.x in the matrix transform, but as my objects are ruled with a Timer object, it’ll add 100 at each tick of clock…So the object will move itself at each tick of clock…
Anyone you have a good idea to submit ?..oh, and for some ‘technical reasons’ the sprites must stay at (0,0) in the librairy and not at (-50,0)…yes it would be too easy 
Forgot to tell :
the invert() Matrix method isn’t good for me because I don’t have a way to tell the x & y coordinates to the function, if I use Invert(), it’ll place the sprite at (0,0) on the stage