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[orx-easing] convert orx-easing

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This commit is contained in:
Edwin Jakobs
2021-06-29 13:36:39 +02:00
parent 874d49779f
commit 7360b64def
4 changed files with 105 additions and 32 deletions
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19
orx-easing/src/main/kotlin/Easing.kt → orx-easing/src/commonMain/kotlin/Easing.kt
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@@ -1,9 +1,6 @@
package org.openrndr.extras.easing
import kotlin.math.cos
import kotlin.math.pow
import kotlin.math.sin
import kotlin.math.sqrt
import kotlin.math.*
typealias EasingFunction = (Double, Double, Double, Double) -> Double
@@ -167,7 +164,7 @@ fun easeElasticIn(t: Double, b: Double, c: Double, d: Double): Double {
val p = d * .3
val s = p / 4
td -= 1.0
return -(c * 2.0.pow(10 * (td)) * sin((td * d - s) * (2 * Math.PI) / p)) + b
return -(c * 2.0.pow(10 * (td)) * sin((td * d - s) * (2 * PI) / p)) + b
}
}
@@ -182,9 +179,9 @@ fun easeElasticInOut(t: Double, b: Double, c: Double, d: Double): Double {
val s = p / 4
val td3 = td2 - 1.0
return if (td2 < 1) {
-.5 * (c * 2.0.pow(10 * (td3)) * sin((td3 - s) * (2 * Math.PI) / p)) + b
-.5 * (c * 2.0.pow(10 * (td3)) * sin((td3 - s) * (2 * PI) / p)) + b
} else {
c * 2.0.pow(-10 * (td3) * sin(td3 - s) * (2 * Math.PI) / p) * .5 + c + b
c * 2.0.pow(-10 * (td3) * sin(td3 - s) * (2 * PI) / p) * .5 + c + b
}
}
@@ -197,7 +194,7 @@ fun easeElasticOut(t: Double, b: Double, c: Double, d: Double): Double {
return b + c
val p = d * .3
val s = p / 4
return c * 2.0.pow(-10 * td) * sin((td * d - s) * (2 * Math.PI) / p) + c + b
return c * 2.0.pow(-10 * td) * sin((td * d - s) * (2 * PI) / p) + c + b
}
// -- expo
@@ -279,13 +276,13 @@ fun easeQuintOut(t: Double, b: Double, c: Double, d: Double): Double {
// -- sine
fun easeSineIn(t: Double, b: Double = 0.0, c: Double = 1.0, d: Double = 1.0): Double =
-c * cos(t / d * (Math.PI / 2)) + c + b
-c * cos(t / d * (PI / 2)) + c + b
fun easeSineOut(t: Double, b: Double = 0.0, c: Double = 1.0, d: Double = 1.0): Double =
c * sin(t / d * (Math.PI / 2)) + b
c * sin(t / d * (PI / 2)) + b
fun easeSineInOut(t: Double, b: Double, c: Double, d: Double): Double =
-c / 2 * (cos(Math.PI * t / d) - 1) + b
-c / 2 * (cos(PI * t / d) - 1) + b
enum class Easing(val function: EasingFunction) {