PointFEvaluator
class PointFEvaluator : TypeEvaluator
This evaluator can be used to perform type interpolation between PointF values.
Summary
Public constructors |
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Construct a PointFEvaluator that returns a new PointF on every evaluate call. |
PointFEvaluator(reuse: PointF)Constructs a PointFEvaluator that modifies and returns |
Public functions |
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PointF |
This function returns the result of linearly interpolating the start and end PointF values, with |
Public constructors
PointFEvaluator
PointFEvaluator()
Construct a PointFEvaluator that returns a new PointF on every evaluate call. To avoid creating an object for each evaluate call, PointFEvaluator should be used whenever possible.
PointFEvaluator
PointFEvaluator(reuse: PointF)
Constructs a PointFEvaluator that modifies and returns reuse 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.
| Parameters | |
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reuse: PointF |
A PointF to be modified and returned by evaluate. |
Public functions
evaluate
fun evaluate(fraction: Float, startValue: PointF, endValue: PointF): PointF
This function returns the result of linearly interpolating the start and end PointF 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 PointF objects (x, y).
If PointFEvaluator was used to construct this PointFEvaluator, the object returned will be the reuse passed into the constructor.
| Parameters | |
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fraction: Float |
The fraction from the starting to the ending values |
startValue: PointF |
The start PointF |
endValue: PointF |
The end PointF |
| Returns | |
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PointF |
A linear interpolation between the start and end values, given the |