PhocPropertyEaser

Eases properties of a given object.

Based on the given easing function the PhocPropertyEaser will ease the specified float properties of the target object based on the progress set via progress across the unit interval [0.0, 1.0].

If an object has properties a and b that should be eased in the intervals [-1.0,1.0] and [10.0, 100.0] respectively the invocation would look like:

PhocPropertyEaser easer = phoc_property_easer_new (G_OBJECT (object));
phoc_property_easer_set_props (easer, "a", -1.0, 1.0, "b", 0.0, 100.0, NULL);

which sets up the properties to their initial values. Changing progress then updates the properties according to the given easing function. E.g. with PHOC_EASING_NONE (plain linear interpolation)

phoc_property_easer_set_progress (easer, 0.5);

would set object.a == 0.0 and object.b == 50.0.

The eased properties must be of type float or int. If the tracked object goes away the easing stops. No ref is held on the object.