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[orx-noise] Add more crossfade functions

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This commit is contained in:
Edwin Jakobs
2021-09-09 10:27:56 +02:00
parent 4830cdcd6b
commit 2f3b34b4e3
1 changed files with 29 additions and 2 deletions
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31
orx-noise/src/commonMain/kotlin/Functions.kt
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@@ -21,13 +21,40 @@ fun ((Int, Double, Double) -> Vector2).gradient(epsilon: Double = 1e-6): (Int, D
dfdx + dfdy
}
fun ((Int, Double) -> Double).crossFade(
start: Double,
end: Double,
width: Double = 0.5
): (Int, Double) -> Double {
return { seed, t ->
val a = t.map(start, end, 0.0, 1.0).mod_(1.0)
val f = (a / width).coerceAtMost(1.0)
val o = this(seed, a.map(0.0, 1.0, start, end)) * f
val s = this(seed, (a + 1.0).map(0.0, 1.0, start, end) * (1.0 - f))
o + s
}
}
fun ((Int, Double, Double) -> Double).crossFade(
start: Double,
end: Double,
width: Double = 0.5
): (Int, Double, Double) -> Double {
return { seed, x, t ->
val a = t.map(start, end, 0.0, 1.0).mod_(1.0)
val f = (a / width).coerceAtMost(1.0)
val o = this(seed, x, a.map(0.0, 1.0, start, end)) * f
val s = this(seed, x, (a + 1.0).map(0.0, 1.0, start, end) * (1.0 - f))
o + s
}
}
fun ((Int, Double, Double, Double) -> Double).crossFade(
start: Double,
end: Double,
width: Double = 0.5
): (Int, Double, Double, Double) -> Double {
return { seed, x, y, z ->
val a = z.map(start, end, 0.0, 1.0).mod_(1.0)
return { seed, x, y, t ->
val a = t.map(start, end, 0.0, 1.0).mod_(1.0)
val f = (a / width).coerceAtMost(1.0)
val o = this(seed, x, y, a.map(0.0, 1.0, start, end)) * f
val s = this(seed, x, y, (a + 1.0).map(0.0, 1.0, start, end) * (1.0 - f))