fix(DRACOExporter): vendor draco_encoder

package.json

@@ -34,11 +34,9 @@
     "vite": "^4.3.8"
   },
   "dependencies": {
-    "@types/draco3d": "^1.4.0",
     "@types/offscreencanvas": "^2019.6.4",
     "@types/webxr": "^0.5.2",
     "chevrotain": "^10.1.2",
-    "draco3d": "^1.4.1",
     "fflate": "^0.6.9",
     "ktx-parse": "^0.4.5",
     "mmd-parser": "^1.0.4",

src/_polyfill/draco_encoder.d.ts

@@ -0,0 +1,103 @@
+// Type definitions for draco3d 1.4
+// Project: https://github.com/google/draco#readme
+// Definitions by: Don McCurdy <https://github.com/donmccurdy>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+type TypedArray = Float32Array | Uint32Array | Uint16Array | Uint8Array | Int16Array | Int8Array
+
+export function createEncoderModule(object?: Record<string, unknown>): EncoderModule
+
+export interface BaseModule {
+  Mesh: new () => Mesh
+
+  DracoFloat32Array: new () => DracoFloat32Array
+  DracoInt8Array: new () => DracoInt8Array
+  DracoInt16Array: new () => DracoInt16Array
+  DracoInt32Array: new () => DracoInt32Array
+  DracoUInt8Array: new () => DracoUInt8Array
+  DracoUInt16Array: new () => DracoUInt16Array
+  DracoUInt32Array: new () => DracoUInt32Array
+
+  _malloc: (ptr: number) => number
+  _free: (ptr: number) => void
+  destroy: (object: unknown) => void
+
+  // Heap.
+  HEAPF32: Float32Array
+  HEAP32: Int32Array
+  HEAP16: Int16Array
+  HEAP8: Int8Array
+  HEAPU32: Uint32Array
+  HEAPU16: Uint16Array
+  HEAPU8: Uint8Array
+}
+
+export interface EncoderModule extends BaseModule {
+  Encoder: new () => Encoder
+  MeshBuilder: new () => MeshBuilder
+
+  POSITION: number
+  NORMAL: number
+  TEX_COORD: number
+  COLOR: number
+  GENERIC: number
+
+  MESH_SEQUENTIAL_ENCODING: number
+  MESH_EDGEBREAKER_ENCODING: number
+}
+
+export interface Encoder {
+  SetAttributeQuantization(attribute: number, bits: number): void
+  SetAttributeExplicitQuantization(
+    attribute: number,
+    bits: number,
+    itemSize: number,
+    origin: [number, number, number],
+    range: number,
+  ): void
+  SetSpeedOptions(encodeSpeed: number, decodeSpeed: number): void
+  SetEncodingMethod(method: number): void
+  SetTrackEncodedProperties(track: boolean): void
+  EncodeMeshToDracoBuffer(mesh: Mesh, array: DracoInt8Array): number
+  GetNumberOfEncodedPoints(): number
+  GetNumberOfEncodedFaces(): number
+}
+
+export interface DracoArray {
+  GetValue: (index: number) => number
+}
+
+// tslint:disable-next-line:no-empty-interface
+export interface DracoFloat32Array extends DracoArray {}
+// tslint:disable-next-line:no-empty-interface
+export interface DracoInt8Array extends DracoArray {}
+// tslint:disable-next-line:no-empty-interface
+export interface DracoInt16Array extends DracoArray {}
+// tslint:disable-next-line:no-empty-interface
+export interface DracoInt32Array extends DracoArray {}
+// tslint:disable-next-line:no-empty-interface
+export interface DracoUInt8Array extends DracoArray {}
+// tslint:disable-next-line:no-empty-interface
+export interface DracoUInt16Array extends DracoArray {}
+// tslint:disable-next-line:no-empty-interface
+export interface DracoUInt32Array extends DracoArray {}
+
+export interface Attribute {
+  num_components: () => number
+}
+
+export interface Mesh {
+  ptr: number
+  num_faces: () => number
+  num_points: () => number
+}
+
+export interface MeshBuilder {
+  AddFacesToMesh(mesh: Mesh, numFaces: number, faces: Uint16Array | Uint32Array): void
+  AddUInt8Attribute(mesh: Mesh, attribute: number, count: number, itemSize: number, array: TypedArray): number
+  AddInt8Attribute(mesh: Mesh, attribute: number, count: number, itemSize: number, array: TypedArray): number
+  AddUInt16Attribute(mesh: Mesh, attribute: number, count: number, itemSize: number, array: TypedArray): number
+  AddInt16Attribute(mesh: Mesh, attribute: number, count: number, itemSize: number, array: TypedArray): number
+  AddUInt32Attribute(mesh: Mesh, attribute: number, count: number, itemSize: number, array: TypedArray): number
+  AddFloatAttribute(mesh: Mesh, attribute: number, count: number, itemSize: number, array: TypedArray): number
+}

src/exporters/DRACOExporter.ts

@@ -1,5 +1,5 @@
-import type { EncoderModule } from 'draco3d'
 import { BufferGeometry, Mesh, Points } from 'three'
+import { createEncoderModule } from '../_polyfill/draco_encoder'
 
 /**
  * Export draco compressed files from threejs geometry objects.
@@ -15,8 +15,6 @@ import { BufferGeometry, Mesh, Points } from 'three'
  *  - exportNormals
  */
 
-declare const DracoEncoderModule: () => EncoderModule
-
 class DRACOExporter {
   // Encoder methods
 
@@ -52,13 +50,9 @@ class DRACOExporter {
       throw new Error('DRACOExporter: The first parameter of parse() is now an instance of Mesh or Points.')
     }
 
-    if (DracoEncoderModule === undefined) {
-      throw new Error('THREE.DRACOExporter: required the draco_encoder to work.')
-    }
-
     const geometry = object.geometry
 
-    const dracoEncoder = DracoEncoderModule()
+    const dracoEncoder = createEncoderModule()
     const encoder = new dracoEncoder.Encoder()
     let builder
     let dracoObject

yarn.lock

@@ -139,11 +139,6 @@
   resolved "https://registry.yarnpkg.com/@esbuild/win32-x64/-/win32-x64-0.17.19.tgz#8cfaf2ff603e9aabb910e9c0558c26cf32744061"
   integrity sha512-lAhycmKnVOuRYNtRtatQR1LPQf2oYCkRGkSFnseDAKPl8lu5SOsK/e1sXe5a0Pc5kHIHe6P2I/ilntNv2xf3cA==
 
-"@types/draco3d@^1.4.0":
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/@types/draco3d/-/draco3d-1.4.0.tgz#6a57c6295d69b3c69ee72a93f132763afd74c77b"
-  integrity sha512-rXFiyNFUu/sad/VWmc6xdO4GWcc55ny7cq08cxmDFcDIeNg0WXT279ZW7mug+rO51TPS2xlmMY631VKauoot7A==
-
 "@types/offscreencanvas@^2019.6.4":
   version "2019.6.4"
   resolved "https://registry.yarnpkg.com/@types/offscreencanvas/-/offscreencanvas-2019.6.4.tgz#64f6d120b53925028299c744fcdd32d2cd525963"
@@ -240,11 +235,6 @@ core-util-is@~1.0.0:
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
   integrity sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=
 
-draco3d@^1.4.1:
-  version "1.4.1"
-  resolved "https://registry.yarnpkg.com/draco3d/-/draco3d-1.4.1.tgz#2abdcf7b59caaac50f7e189aec454176c57146b2"
-  integrity sha512-9Rxonc70xiovBC+Bq1h57SNZIHzWTibU1VfIGp5z3Xx8dPtv4yT5uGhiH7P5uvJRR2jkrvHafRxR7bTANkvfpg==
-
 emoji-regex@^8.0.0:
   version "8.0.0"
   resolved "https://registry.yarnpkg.com/emoji-regex/-/emoji-regex-8.0.0.tgz#e818fd69ce5ccfcb404594f842963bf53164cc37"