Co robi setTranslateX, getTranslateY

Question

Posiadam obiekt Node z javeFx2.2 i jest funkcja getX, getY, ale też getTranslateX, getTranslateY.

czym sie roznia te metody?  

Wiem ze wykorzystuje sie to do animacji ruchu, ale nie do końca wiem jak to działa.

Answer 1

Ustawiasz przesunięcie na osi x obiektu względem punktu początkowego za pomocą setTranslateX natomiast getTranslateX zwraca ci to przesunięcie. https://docs.oracle.com/javase/8/javafx/api/javafx/scene/Node.html

A translation transformation is one which shifts the origin of the node's coordinate space along either the x or y axis. For example, if you create a Rectangle which is drawn at the origin (x=0, y=0) and has a width of 100 and a height of 50, and then apply a Translate with a shift of 10 along the x axis (x=10), then the rectangle will appear drawn at (x=10, y=0) and remain 100 points wide and 50 tall. Note that the origin was shifted, not the x variable of the rectangle.

A common node transform is a translation by an integer distance, most often used to lay out nodes on the stage. Such integer translations maintain the device pixel mapping so that local coordinates that are integers still map to the cracks between pixels.