FMX.Types.TAnimationType
Delphi
TAnimationType = (&In, Out, InOut);
C++
enum class DECLSPEC_DENUM TAnimationType : unsigned int { In, Out, InOut };
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| enum | public | FMX.Types.pas FMX.Types.hpp |
FMX.Types | FMX.Types |
Description
The type of the AnimationType property of an animation.
Determines how the interpolation of an animation is applied. Use TAnimationType to specify how the value of a property changes from its starting value to its ending value (StopValue). Imagine the graph of the quadratic function: y = x**2. The slope of the graph is zero at x = 0. That means that y changes very slowly near x = 0. As x increases, the slope gets steeper and steeper, meaning that y is changing faster and faster. x represents time in the animation, and y is the value of the property being animated.
With a TAnimationType of In and a TInterpolationType of Quadratic, the value of the property that this animation is applied to (PropertyName) changes slowly near the starting point (equivalent to the quadradic function at x = 0). With a TAnimationType of Out, change is slow near the endpoint. For a TAnimationType of InOut, change is slow at both ends. The curve is mirrored about the center point and meets in the middle.
For a visual demonstration, see the AttachTAnimation (Delphi) code example.
TAnimationType can take one of the following values:
| Value | Meaning |
|---|---|
|
In |
The curve that applies to the TInterpolationType for this animation starts at the starting value of the property animated. |
|
Out |
The curve that applies to the TInterpolationType for this animation starts at the ending value of the property animated and proceeds backwards to the starting value. |
|
InOut |
The curve that applies to the TInterpolationType for this animation starts at both the starting value and the ending value of the property animated and meets at the center point. |