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Edwin Jakobs
2019-01-26 21:24:58 +01:00
parent a3385abee0
commit 149a7fd183
42 changed files with 2758 additions and 2291 deletions
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50
orx-noise/src/main/kotlin/PerlinNoise2D.kt
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@@ -1,26 +1,26 @@
package org.openrndr.extra.noise
fun perlinLinear(seed: Int, x: Double, y: Double) = perlin(seed, x, y, ::linear)
fun perlinQuintic(seed: Int, x: Double, y: Double) = perlin(seed, x, y, ::quintic)
fun perlinHermite(seed: Int, x: Double, y: Double) = perlin(seed, x, y, ::hermite)
private fun perlin(seed: Int, x: Double, y: Double, interpolator: (Double) -> Double): Double {
val x0 = x.fastFloor()
val y0 = y.fastFloor()
val x1 = x0 + 1
val y1 = y0 + 1
val xs = interpolator(x - x0)
val ys = interpolator(y - y0)
val xd0 = x - x0
val yd0 = y - y0
val xd1 = xd0 - 1
val yd1 = yd0 - 1
val xf0 = lerp(gradCoord2D(seed, x0, y0, xd0, yd0), gradCoord2D(seed, x1, y0, xd1, yd0), xs)
val xf1 = lerp(gradCoord2D(seed, x0, y1, xd0, yd1), gradCoord2D(seed, x1, y1, xd1, yd1), xs)
return lerp(xf0, xf1, ys)
package org.openrndr.extra.noise
fun perlinLinear(seed: Int, x: Double, y: Double) = perlin(seed, x, y, ::linear)
fun perlinQuintic(seed: Int, x: Double, y: Double) = perlin(seed, x, y, ::quintic)
fun perlinHermite(seed: Int, x: Double, y: Double) = perlin(seed, x, y, ::hermite)
private fun perlin(seed: Int, x: Double, y: Double, interpolator: (Double) -> Double): Double {
val x0 = x.fastFloor()
val y0 = y.fastFloor()
val x1 = x0 + 1
val y1 = y0 + 1
val xs = interpolator(x - x0)
val ys = interpolator(y - y0)
val xd0 = x - x0
val yd0 = y - y0
val xd1 = xd0 - 1
val yd1 = yd0 - 1
val xf0 = lerp(gradCoord2D(seed, x0, y0, xd0, yd0), gradCoord2D(seed, x1, y0, xd1, yd0), xs)
val xf1 = lerp(gradCoord2D(seed, x0, y1, xd0, yd1), gradCoord2D(seed, x1, y1, xd1, yd1), xs)
return lerp(xf0, xf1, ys)
}