Tizen Native API
3.0
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Alpha functions are used in animations to specify the rate of change of the animation parameter over time. More...
Public Types | |
enum | BuiltinFunction |
Enumeration for built-in alpha functions. More... | |
enum | Mode |
Enumeration for all possible functioning modes for the alpha function. More... | |
Public Member Functions | |
AlphaFunction () | |
Default constructor. Creates an alpha function object with the default built-in alpha function. | |
AlphaFunction (BuiltinFunction function) | |
Constructor. Creates an alpha function object with the built-in alpha function passed as a parameter to the constructor. | |
AlphaFunction (AlphaFunctionPrototype function) | |
Constructor. Creates an alpha function object using a pointer to an alpha function passed as a parameter to the constructor. | |
AlphaFunction (const Dali::Vector2 &controlPoint0, const Dali::Vector2 &controlPoint1) | |
Constructor. | |
Vector4 | GetBezierControlPoints () const |
Returns the control points of the alpha function. | |
AlphaFunctionPrototype | GetCustomFunction () const |
Returns the pointer to the custom function. | |
BuiltinFunction | GetBuiltinFunction () const |
Returns the built-in function used by the alpha function. | |
Mode | GetMode () const |
Returns the functioning mode of the alpha function. |
Detailed Description
Alpha functions are used in animations to specify the rate of change of the animation parameter over time.
Understanding an animation as a parametric function over time, the alpha function is applied to the parameter of the animation before computing the final animation value.
- Since:
- 2.4, DALi version 1.0.0
Member Enumeration Documentation
Enumeration for built-in alpha functions.
- Since:
- 2.4, DALi version 1.0.0
- Enumerator:
Enumeration for all possible functioning modes for the alpha function.
- Since:
- 2.4, DALi version 1.0.0
Constructor & Destructor Documentation
Default constructor. Creates an alpha function object with the default built-in alpha function.
- Since:
- 2.4, DALi version 1.0.0
- Returns:
- The alpha function
Dali::AlphaFunction::AlphaFunction | ( | BuiltinFunction | function | ) |
Constructor. Creates an alpha function object with the built-in alpha function passed as a parameter to the constructor.
- Since:
- 2.4, DALi version 1.0.0
- Parameters:
-
[in] function One of the built-in alpha functions
- Returns:
- The alpha function
Constructor. Creates an alpha function object using a pointer to an alpha function passed as a parameter to the constructor.
- Since:
- 2.4, DALi version 1.0.0
- Parameters:
-
[in] function A pointer to an alpha function
- Returns:
- The alpha function
Dali::AlphaFunction::AlphaFunction | ( | const Dali::Vector2 & | controlPoint0, |
const Dali::Vector2 & | controlPoint1 | ||
) |
Constructor.
Creates a bezier alpha function. The bezier will have the first point at (0,0) and the end point at (1,1).
- Since:
- 2.4, DALi version 1.0.0
- Parameters:
-
[in] controlPoint0 A Vector2 which will be used as the first control point of the curve [in] controlPoint1 A Vector2 which will be used as the second control point of the curve
- Returns:
- The alpha function
- Note:
- The x components of the control points will be clamped to the range [0,1] to prevent non monotonic curves.
Member Function Documentation
Returns the control points of the alpha function.
- Since:
- 2.4, DALi version 1.0.0
- Returns:
- Vector4 containing the two control points of the curve (xy for the first point and zw for the second)
Returns the built-in function used by the alpha function.
- Since:
- 2.4, DALi version 1.0.0
- Returns:
- One of the built-in alpha functions. In case no built-in function has been specified, it will return AlphaFunction::DEFAULT
Returns the pointer to the custom function.
- Since:
- 2.4, DALi version 1.0.0
- Returns:
- A pointer to a custom alpha function, or
0
if not defined
Mode Dali::AlphaFunction::GetMode | ( | ) | const |
Returns the functioning mode of the alpha function.
- Since:
- 2.4, DALi version 1.0.0
- Returns:
- The functioning mode of the alpha function