EVALUATION_CURVE_TYPE enumeration
The EVALUATION_CURVE_TYPE enumeration describes how a property should change over time. This value is entered in the XML initialization file and is used only as a tool to help the transform calculate a numeric value for a specific time.
Syntax
typedef enum eEVALUATION_CURVE_TYPE {
StepEvaluation = 0,
LinearEvaluation = 1,
SquareEvaluation = 2,
InverseSquareEvaluation = 3,
SineEvaluation = 4
} EVALUATION_CURVE_TYPE;
Constants
-
StepEvaluation
-
Specifies that the value remains unchanged between time points and the value changes instantaneously from one value to the next at a time point.
-
LinearEvaluation
-
A straight line between time points.
-
SquareEvaluation
-
A curve where the value between time points increases with the square of the time.
-
InverseSquareEvaluation
-
A curve where the value between time points is the inverse of the square of the time.
-
SineEvaluation
-
A sinusoidal curve between time points.
Remarks
A transition or effect can have only a single curve associated with it.
Requirements
| Minimum supported client |
Windows Vista [desktop apps only] |
| Minimum supported server |
Windows Server 2008 [desktop apps only] |
| Header |
|