[orx-noise] Add hash functions

orx-noise/src/commonMain/kotlin/shapes/Rectangle.kt

@@ -0,0 +1,24 @@
+package org.openrndr.extra.noise.shapes
+
+import org.openrndr.extra.noise.uhash11
+import org.openrndr.math.Vector2
+import org.openrndr.shape.Rectangle
+import kotlin.random.Random
+
+fun Rectangle.uniform(random: Random = Random.Default): Vector2 {
+    val x = random.nextDouble() * width + corner.x
+    val y = random.nextDouble() * height + corner.y
+    return Vector2(x, y)
+}
+
+fun Rectangle.hash(seed: Int, x: Int): Vector2 {
+    val ux = uhash11(seed.toUInt() + uhash11(x.toUInt()))
+    val uy = uhash11(ux + x.toUInt())
+
+    val fx = ux.toDouble() / UInt.MAX_VALUE.toDouble()
+    val fy = uy.toDouble() / UInt.MAX_VALUE.toDouble()
+
+    val x = fx * width + corner.x
+    val y = fy * height + corner.y
+    return Vector2(x, y)
+}