Animations and Effects: Creating Transformations

EFL provides the following animation functionalities: Ecore animators, Elementary transitions, Edje animations, and Evas Map animations.

The first option for creating animations with EFL is to use Ecore animators. To create an Ecore animation, you must first determine the duration of the animation, and then define a callback function that performs the animation with that duration.

You can also create animations using Elementary transitions. Elementary transitions allow you to apply various transition effects, such as translation and rotation, to Evas objects. Elementary transitions are mostly based on Ecore animators, but provide some transition methods at a higher level of abstraction. Elementary transitions provide a simpler way of animating objects than Ecore animators or Edje animations.

A third option for animating objects is to use Edje animations, which are based on a simple principle: transitioning from one state to another. To animate an object with Edje, you have to first define the start and end states of the animation, and then transition the object from the start state to the end state.

Finally, Evas Map animations allow you to apply transformations to all types of objects by way of UV mapping. In UV mapping, you map points in the source object to 3D space positions in the target object. This allows for rotation, perspective, scale, and other transformation effects, depending on the map. In addition, each map point can carry a multiplier color, which, if properly calculated, can be used to apply 3D shading effects on the target object.

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