setFlipX and setFlipY

alexzheng

I played with setMatrix,and found that is an awesome function.
It can make some handy functions in other game engine,such as setFlipX and setFlipY.

here is my code snippet:

local bitmap = Bitmap.new(Texture.new("bird.png"))
bitmap:setPosition(140, 220)
bitmap:setAnchorPoint(0.5, 0.5)
stage:addChild(bitmap)

matrix = Matrix.new()
--matrix:setM11(-1) ---flipy
matrix:setM22(-1) --flipx
matrix:setTx(bitmap:getX())

matrix:setTy(bitmap:getY())

bitmap:setMatrix(matrix)

alexzheng

It would be better to use setFlip direct from Sprite in next version for Convenience )

alexzheng

However I got a little confused.
to setFlipY, I thought ty should be 0,since only x needs to change.

atilim

setMatrix is flexible. you can also do skew effects with it.

For the flip, you can use setScaleX(-1) and setScaleY(-1)