CODEWITHSUNDEEP
actionscript-3
HITMAN
HITMAN

Reputation: 548

AS3-What's the difference between "rotation" and "rotationZ"?

Both of them, do the same. so, are they completely same as each other or there is difference?

Upvotes: 0

Views: 137

Answers (1)

Aaron Beall
Aaron Beall

Reputation: 52183

Conceptually they are the same, but there is some difference to be aware of.

Display objects can either be 2d (transform.matrix) or 3d (transform.matrix3D), but not both. The rotation property reflects rotation of the matrix or matrix3D, while rotationZ explicitly represents rotation around the Z axis of the matrix3D property. The difference here is that if you set rotationZ it will, like all 3d properties (z, rotationX, etc), convert the display object to 3d (transform.matrix3D) even if no other 3d properties are set. For example:

var sprite:Sprite = new Sprite();

sprite.rotation = 50;
trace(sprite.transform.matrix); // [object Matrix]
trace(sprite.transform.matrix3D) // null

sprite.rotationZ = 50;
trace(sprite.transform.matrix); // null
trace(sprite.transform.matrix3D) // [object Matrix3D]

This is notable because the 3d rendering (transform.matrix3D) does introduce some blurring due to the way 3d is projected onto 2d, while 2d rendering (transform.matrix) does not.

So, if you aren't going to use any other 3d properties, stick to rotation. If you are going to use other 3d properties, using rotationZ makes more sense.

Other than that, they are the same. ;)

Hope that helps.

Upvotes: 2

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