QGraphicsItemAnimation is a class in the Qt framework that can be used to animate QGraphicsItems. QGraphicsItems are graphical objects that can be added to a QGraphicsScene and displayed on a QGraphicsView.
QGraphicsItemAnimation allows you to create animations that change the position, rotation, and opacity of a QGraphicsItem over time. You can also specify easing curves to control the speed and acceleration of the animation.
To use QGraphicsItemAnimation, you first need to create an instance of the class and set the target QGraphicsItem that you want to animate. You then create QPropertyAnimations for each property that you want to animate and add them to the QGraphicsItemAnimation.
Here’s an example of how to use QGraphicsItemAnimation to animate the position of a QGraphicsItem:
animation = QGraphicsItemAnimation()
animation.setItem(item) # item is the QGraphicsItem being animated
x_animation = QPropertyAnimation(item, b"pos")
x_animation.setKeyValueAt(0, QPointF(0, 0))
x_animation.setKeyValueAt(1, QPointF(100, 0))
x_animation.setDuration(1000)
animation.addAnimation(x_animation)
animation.start()
This code animates the X position of the QGraphicsItem from (0, 0) to (100, 0) over the course of 1 second. The animation is started by calling the start() method on the QGraphicsItemAnimation.
QGraphicsItemAnimation provides a powerful and flexible way to add animations to your QGraphicsItems in Qt.
