add Marching TS def file

examples/jsm/objects/MarchingCubes.d.ts

@@ -0,0 +1,73 @@
+import {
+  BufferGeometry,
+  Material,
+  ImmediateRenderObject
+} from '../../../src/Three';
+
+export class MarchingCubes extends ImmediateRenderObject {
+  constructor(resolution: number, material: Material, enableUvs?: boolean, enableColors?: boolean);
+
+  enableUvs: boolean;
+  enableColors: boolean;
+
+  resolution: number;
+
+  // parameters
+
+  isolation: number;
+
+  // size of field, 32 is pushing it in Javascript :)
+
+  size: number;
+  size2: number;
+  size3: number;
+  halfsize: number;
+
+  // deltas
+
+  delta: number;
+  yd: number;
+  zd: number;
+
+  field: Float32Array;
+  normal_cache: Float32Array;
+  palette: Float32Array;
+
+  maxCount: number;
+  count: number;
+
+  hasPositions: boolean;
+  hasNormals: boolean;
+  hasColors: boolean;
+  hasUvs: boolean;
+
+  positionArray: Float32Array;
+  normalArray: Float32Array;
+
+  uvArray: Float32Array;
+  colorArray: Float32Array;
+
+  begin(): void;
+  end(): void;
+
+  addBall( ballx: number, bally: number, ballz: number, strength: number, subtract: number, colors: any ): void;
+
+  addPlaneX( strength: number, subtract: number ): void;
+  addPlaneY( strength: number, subtract: number ): void;
+  addPlaneZ( strength: number, subtract: number ): void;
+
+  setCell ( x: number, y: number, z: number, value: number ): void;
+  getCell ( x: number, y: number, z: number ): number;
+
+  blur( intensity: number ): void;
+
+  reset(): void;
+  render( renderCallback: any ): void;
+  generateGeometry(): BufferGeometry;
+  generateBufferGeometry(): BufferGeometry;
+
+}
+
+export const edgeTable: Int32Array[];
+export const triTable: Int32Array[];
+