RectEvaluator
class RectEvaluator : TypeEvaluator
This evaluator can be used to perform type interpolation between Rect values.
Summary
Public constructors |
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Construct a RectEvaluator that returns a new Rect on every evaluate call. |
RectEvaluator(reuseRect: Rect)Constructs a RectEvaluator that modifies and returns |
Public functions |
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Rect |
This function returns the result of linearly interpolating the start and end Rect values, with |
Public constructors
RectEvaluator
RectEvaluator()
Construct a RectEvaluator that returns a new Rect on every evaluate call. To avoid creating an object for each evaluate call, RectEvaluator should be used whenever possible.
RectEvaluator
RectEvaluator(reuseRect: Rect)
Constructs a RectEvaluator that modifies and returns reuseRect in evaluate calls. The value returned from evaluate should not be cached because it will change over time as the object is reused on each call.
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reuseRect: Rect |
A Rect to be modified and returned by evaluate. |
Public functions
evaluate
fun evaluate(fraction: Float, startValue: Rect, endValue: Rect): Rect
This function returns the result of linearly interpolating the start and end Rect values, with fraction representing the proportion between the start and end values. The calculation is a simple parametric calculation on each of the separate components in the Rect objects (left, top, right, and bottom).
If RectEvaluator was used to construct this RectEvaluator, the object returned will be the reuseRect passed into the constructor.
| Parameters | |
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fraction: Float |
The fraction from the starting to the ending values |
startValue: Rect |
The start Rect |
endValue: Rect |
The end Rect |
| Returns | |
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Rect |
A linear interpolation between the start and end values, given the |