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[orx-noise] Add tools for functional composition

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This commit is contained in:
Edwin Jakobs
2021-07-25 22:36:07 +02:00
parent c388cbe7e2
commit 454affbdfd
15 changed files with 532 additions and 74 deletions
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13
orx-noise/src/commonMain/kotlin/SimplexNoise2D.kt
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@@ -8,6 +8,8 @@ private const val G2 = (3.0 - SQRT3) / 6.0
fun simplex(seed: Int, position: Vector2): Double = simplex(seed, position.x, position.y)
//fun simplex2D(seed:Int, x:Double, y:Double) = simplex(seed, x, y)
fun simplex(seed: Int, x: Double, y: Double): Double {
var t = (x + y) * F2
val i = (x + t).fastFloor()
@@ -63,5 +65,12 @@ fun simplex(seed: Int, x: Double, y: Double): Double {
return 50.0 * (n0 + n1 + n2)
}
fun Vector2.Companion.simplex(seed: Int, x: Double): Vector2 = Vector2(simplex(seed, x, 0.0, 0.0, 0.0),
simplex(seed, 0.0, x + 31.3383, 0.0, 0.0))
val simplex1D: (Int, Double) -> Double = ::simplex
val simplex2D: (Int, Double, Double) -> Double = ::simplex
val simplex3D: (Int, Double, Double, Double) -> Double = ::simplex
val simplex4D: (Int, Double, Double, Double) -> Double = ::simplex
fun Vector2.Companion.simplex(seed: Int, x: Double): Vector2 = Vector2(
simplex(seed, x, 0.0, 0.0, 0.0),
simplex(seed, 0.0, x + 31.3383, 0.0, 0.0)
)