TransformToGlobal doesn't care about the center

[csiz]

I found a minor bug in Drawable

Code: [Select]

Sprite aaa;
aaa.SetImage(Imagini.SnakeTale);//40|40 image
aaa.SetCenter(20,20);
aaa.SetPosition(0,0);
cout<<aaa.TransformToGlobal(Vector2f(0,0)).x;//outputs -20

Shouldn't that output 0 ?

[Laurent]

First of all, TransformToXxx functions can't return a wrong result as they simply use the same matrix which is used to draw the object.

The output is correct, SetPosition sets the position of the center of the sprite. So, your new center (20, 20) will map to (0, 0) and (0, 0) will map to (-20, -20).

[csiz]

I thought it should be relative to the center, oh well I'll go around it

[Laurent]

I thought it should be relative to the center

You mean, the input point?
The input point is in local coordinate, which means it doesn't depend on any transformation applied to the object (including moving its center).

[csiz]

Aaaaa now it makes sense  :idea:  Sorry for bothering  :oops: