Index: binaries/data/mods/public/maps/random/rmgen/painter/PerlinPainter.js
===================================================================
--- /dev/null
+++ binaries/data/mods/public/maps/random/rmgen/painter/PerlinPainter.js
@@ -0,0 +1,44 @@
+/**
+ * Perlin noise painter.
+ * @param {number} iterations - Must be > 0. The higher the more detailed the noise.
+ * @param {number} scale - A value > 1 zooms in and < 1 zooms out the noise.
+ * @param {number} multiplier - Range (0,1). Frequency reduction after each iteration.
+ * @param {boolean} type - ELEVATION_MODIFY or ELEVATION_SET.
+ * @param {number} verticalScale - Vertical scale of the values height.
+ * @param {number} positive - If true height will be posititve, if false can be both.
+ * @param {number} baseHeight - Initial height if type == ELEVATION_SET.
+ */
+class PerlinPainter
+{
+	constructor(iterations = 3, scale = 5, multiplier = 0.75, type = ELEVATION_MODIFY, verticalScale = 1, positive = true, baseHeight = 0)
+	{
+		this.iterations = iterations;
+		this.scale = scale;
+		this.multiplier = multiplier;
+		this.type = type;
+		this.positive = positive;
+		this.verticalScale = verticalScale;
+		this.positive = positive;
+		this.baseHeight = baseHeight;
+	}
+
+	paint(area)
+	{
+		for (let point of area.getPoints())
+		{
+			let height = perlinNoise(point, this.iterations, this.scale, this.multiplier);
+
+			if (this.positive)
+				height = height / 2 + 0.5;
+
+			height *= this.verticalScale;
+
+			if (this.type == ELEVATION_SET)
+				height += this.baseHeight;
+			else
+				height += g_Map.getHeight(point);
+
+			g_Map.setHeight(point, height);
+		}
+	}
+}