Add noise preview

src/app/previews/NormalNoise.ts

@@ -0,0 +1,32 @@
+import { DataModel } from '@mcschema/core'
+import { NoiseParameters, NormalNoise, Random } from 'deepslate'
+import type { VersionId } from '../Schemas'
+
+export type NoiseOptions = {
+	offset: [number, number],
+	scale: number,
+	seed: bigint,
+	version: VersionId,
+}
+
+export function normalNoise(state: any, img: ImageData, options: NoiseOptions) {
+	const random = new Random(options.seed)
+	const params = NoiseParameters.fromJson(DataModel.unwrapLists(state))
+	const noise = new NormalNoise(random, params)
+
+	const ox = -options.offset[0] - 100
+	const oz = -options.offset[1] - 100
+	const data = img.data
+	for (let x = 0; x < 256; x += 1) {
+		for (let y = 0; y < 256; y += 1) {
+			const i = x * 4 + y * 4 * 256
+			const xx = (x + ox) * options.scale
+			const yy = (y + oz) * options.scale
+			const color = (noise.sample(xx, yy, 0) + 1) * 128
+			data[i] = color
+			data[i + 1] = color
+			data[i + 2] = color
+			data[i + 3] = 255
+		}
+	}
+}

src/app/previews/index.ts

@@ -1,3 +1,4 @@
 export * from './BiomeSource'
 export * from './Decorator'
 export * from './NoiseSettings'
+export * from './NormalNoise'