@polygonjs/polygonjs/src/engine/operations/sop/Tetrahedralize.ts

node-based WebGL 3D engine https://polygonjs.com

// import {BaseSopOperation} from './_Base';
// import {CoreGroup} from '../../../core/geometry/Group';
// import {DefaultOperationParams} from '../../../core/operations/_Base';
// // import {bunnyMesh} from '../../../core/softBody/Bunny';
// import {Object3D, Mesh} from 'three';
// import {tetrahedralize,TET_CREATION_STAGES} from '../../../core/geometry/modules/tet/utils/tetrahedralize';
// import {ObjectType} from '../../../core/geometry/Constant';
// import {MeshWithBVHGeometry,ThreeMeshBVHHelper} from '../../../core/geometry/bvh/ThreeMeshBVHHelper';
// import {logBlueBg} from '../../../core/logger/Console';
// // import { BufferGeometryWithBVH } from '../../../core/geometry/bvh/three-mesh-bvh';
// // function _makeBunny() {
// // 	const geometry = new BufferGeometry();
// // 	const pos = new Float32Array(bunnyMesh.verts);
// // 	geometry.setAttribute('position', new BufferAttribute(pos, 3));
// // 	geometry.setIndex(bunnyMesh.tetSurfaceTriIds);
// // 	geometry.computeVertexNormals();

// // 	return geometry;
// // }

// interface TetrahedralizeSopParams extends DefaultOperationParams {
// 	resolution: number;
// 	minQualityExp: number;
// 	// oneFacePerTet: boolean;
// 	// tetScale: number;
// 	stage: number;
// 	subStage: number;
// 	// removeOutsideTets: boolean;
// }

// export class TetrahedralizeSopOperation extends BaseSopOperation {
// 	static override readonly DEFAULT_PARAMS: TetrahedralizeSopParams = {
// 		resolution: 10,
// 		minQualityExp: -3,
// 		// oneFacePerTet: true,
// 		// tetScale: 0.8,
// 		stage: 0,
// 		subStage: 0,
// 		// removeOutsideTets: false,
// 	};
// 	static override type(): Readonly<'tetrahedralize'> {
// 		return 'tetrahedralize';
// 	}

// 	override cook(inputCoreGroups: CoreGroup[], params: TetrahedralizeSopParams) {
// 		const coreGroup = inputCoreGroups[0];
// 		const objects = coreGroup.threejsObjectsWithGeo() as Mesh[];
// 		const newObjects: Object3D[] = [];

// 		const stage = TET_CREATION_STAGES[params.stage];
// 		logBlueBg(`****************** tetrahedralize START (${stage})`);

// 		for (let object of objects) {
// 			// const geometry = _makeBunny();
// 			// const object = this.createObject(geometry, ObjectType.MESH);
// 			this._tetrahedralize(object ,params)

// 		}
// 		logBlueBg(`****************** tetrahedralize END (${stage})`);

// 		return this.createCoreGroupFromObjects(newObjects);
// 	}

// 	private _tetrahedralize(mesh: Mesh, params: TetrahedralizeSopParams) {
// 		ThreeMeshBVHHelper.assignDefaultBVHIfNone(mesh);

// 		const tetGeometry = tetrahedralize({
// 			mesh:mesh as MeshWithBVHGeometry,
// 			// resolution: params.resolution,
// 			minQuality: Math.pow(10.0, params.minQualityExp),
// 			// oneFacePerTet: params.oneFacePerTet,
// 			// scale: params.tetScale,
// 			//
// 			stage: TET_CREATION_STAGES[stage],
// 			subStage: params.subStage,
// 			// removeOutsideTets: params.removeOutsideTets,
// 		});
// 		const objectType = params.stage == 0 ? ObjectType.POINTS : ObjectType.MESH;
// 		newObjects.push(this.createObject(tetGeometry, objectType));
// 	}
// }