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FloatEvaluator
open class FloatEvaluator : TypeEvaluator<Number!>
This evaluator can be used to perform type interpolation between float values.
Summary
| Public methods |
| open Float! |
This function returns the result of linearly interpolating the start and end values, with fraction representing the proportion between the start and end values.
|
Public constructors
FloatEvaluator
FloatEvaluator()
Public methods
evaluate
open fun evaluate(
fraction: Float,
startValue: Number!,
endValue: Number!
): Float!
This function returns the result of linearly interpolating the start and end values, with fraction representing the proportion between the start and end values. The calculation is a simple parametric calculation: result = x0 + t * (x1 - x0), where x0 is startValue, x1 is endValue, and t is fraction.
| Parameters |
fraction |
Float: The fraction from the starting to the ending values |
startValue |
Number!: The start value; should be of type float or Float |
endValue |
Number!: The end value; should be of type float or Float |
| Return |
Float! |
A linear interpolation between the start and end values, given the fraction parameter. |
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Last updated 2025-02-10 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-02-10 UTC."],[],[],null,["# FloatEvaluator\n\nAdded in [API level 11](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)\n\nFloatEvaluator\n==============\n\n*** ** * ** ***\n\nKotlin \\|[Java](/reference/android/animation/FloatEvaluator \"View this page in Java\") \n\n```\nopen class FloatEvaluator : TypeEvaluator\u003cNumber!\u003e\n```\n\n|---|---------------------------------------|\n| [kotlin.Any](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html) ||\n| ↳ | [android.animation.FloatEvaluator](#) |\n\nThis evaluator can be used to perform type interpolation between `float` values.\n\nSummary\n-------\n\n| Public constructors ||\n|------------------------------------------------|---|\n| [FloatEvaluator](#FloatEvaluator())`()` \u003cbr /\u003e |\n\n| Public methods ||\n|--------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| open [Float](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-float/index.html)! | [evaluate](#evaluate(kotlin.Float,%20kotlin.Number,%20kotlin.Number))`(`fraction:` `[Float](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-float/index.html)`, `startValue:` `[Number](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-number/index.html)!`, `endValue:` `[Number](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-number/index.html)!`)` This function returns the result of linearly interpolating the start and end values, with `fraction` representing the proportion between the start and end values. |\n\nPublic constructors\n-------------------\n\n### FloatEvaluator\n\n```\nFloatEvaluator()\n```\n\nPublic methods\n--------------\n\n### evaluate\n\nAdded in [API level 14](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nopen fun evaluate(\n fraction: Float, \n startValue: Number!, \n endValue: Number!\n): Float!\n```\n\nThis function returns the result of linearly interpolating the start and end values, with `fraction` representing the proportion between the start and end values. The calculation is a simple parametric calculation: `result = x0 + t * (x1 - x0)`, where `x0` is `startValue`, `x1` is `endValue`, and `t` is `fraction`.\n\n| Parameters ||\n|--------------|------------------------------------------------------------------------------------------------------------------------------------------|\n| `fraction` | [Float](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-float/index.html): The fraction from the starting to the ending values |\n| `startValue` | [Number](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-number/index.html)!: The start value; should be of type `float` or `Float` |\n| `endValue` | [Number](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-number/index.html)!: The end value; should be of type `float` or `Float` |\n\n| Return ||\n|---------------------------------------------------------------------------------|------------------------------------------------------------------------------------------|\n| [Float](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-float/index.html)! | A linear interpolation between the start and end values, given the `fraction` parameter. |"]]
