Aspose.3D FOSS
Mesh

Mesh

包：: @aspose/3d (v24.12.0)

Mesh 也可以通过子路径导入获取 @aspose/3d/entities.

Mesh 是主要的多边形几何实体，位于 @aspose/3d.。它将顶点位置存储为控制点，通过顶点索引列表定义多边形面，并支持多个顶点元素数据层，例如法线和 UV 坐标。.

export class Mesh extends Geometry

Properties

A3DObject ← SceneObject ← Entity ← Geometry ← Mesh

Properties

构建一个单三角形网格，将其附加到场景中，并保存为 GLB。.

import { Scene, Vector4 } from '@aspose/3d';
import { Mesh } from '@aspose/3d/entities';

// Create the mesh and define three control points (vertices)
const mesh = new Mesh();
mesh.controlPoints.push(
  new Vector4(0, 1, 0, 1),   // apex
  new Vector4(-1, 0, 0, 1),  // bottom-left
  new Vector4(1, 0, 0, 1),   // bottom-right
);

// Define one triangular polygon using vertex indices
mesh.createPolygon(0, 1, 2);

// Attach the mesh to the scene and save (extension infers GLB format)
const scene = new Scene();
scene.rootNode.createChildNode('triangle', mesh);
scene.save('triangle.glb');
console.log(`Polygon count: ${mesh.polygonCount}`); // 1

Properties

NameTypeAccessDescription
edgesnumber[]ReadGets the edges.
polygonCountnumberReadGets the polygon count.
polygonsnumber[][]ReadGets the polygons.
deformersany[]ReadGets the deformers.
SignatureDescription
`constructor(name: stringnull, _heightMap: any, _transform: any, _triMesh: boolean
createPolygon()Adds a new polygon to the mesh
getPolygonSize(index: number) → numberReturns the number of vertices in the polygon at the given index
toMesh() → MeshReturns a Mesh instance representing the current object (identity conversion)
optimize(_vertexElements: boolean, _toleranceControlPoint: number, _toleranceNormal: number, _toleranceUV: number) → MeshNot implemented in the FOSS edition — throws at runtime. Reduces mesh complexity using vertex element flag and tolerance values for control points, normals, and UVs
doBoolean(_op: any, _a: Mesh, _transformA: any, _b: Mesh, _transformB: any) → MeshNot implemented in the FOSS edition — throws at runtime. Performs a boolean operation defined by _op on meshes _a and _b with respective transforms
isManifold() → booleanNot implemented in the FOSS edition — throws at runtime. Returns true if manifold is set.
union(_a: Mesh, _b: Mesh) → MeshNot implemented in the FOSS edition — throws at runtime. Returns a new Mesh that is the union of meshes _a and _b
difference(_a: Mesh, _b: Mesh) → MeshNot implemented in the FOSS edition — throws at runtime. Returns a new Mesh that is the difference of mesh _a minus mesh _b
intersect(_a: Mesh, _b: Mesh) → MeshNot implemented in the FOSS edition — throws at runtime.
triangulate() → MeshConverts all polygons in the mesh to triangles and returns the mesh
getBoundingBox() → anyReturns the bounding box.
getEntityRendererKey() → anyNot implemented in the FOSS edition — throws at runtime. Returns the entity renderer key.

Properties

createPolygon(…indices)

使用提供的控制点索引定义一个新的多边形面。索引必须引用中有效的位置在 controlPoints.

createPolygon(...indices: number[]): void

Properties

...indices number[]

三个或更多基于零的索引，指向 controlPoints 数组，以逆时针方向的环绕顺序。.

Properties

void

Properties 

import { Vector4 } from '@aspose/3d';
import { Mesh } from '@aspose/3d/entities';

const mesh = new Mesh();
mesh.controlPoints.push(
  new Vector4(0, 0, 0, 1),
  new Vector4(1, 0, 0, 1),
  new Vector4(1, 1, 0, 1),
  new Vector4(0, 1, 0, 1),
);
// Define a quad as two triangles, or a single quad polygon:
mesh.createPolygon(0, 1, 2, 3);
console.log(`Polygons: ${mesh.polygonCount}`); // 1

triangulate()

将此网格中的所有非三角形多边形转换为三角形。返回三角化后的网格（可能是同一实例，也可能是新实例）。.

triangulate(): Mesh

Properties

Mesh

三角化后的网格。.

Properties

const mesh = new Mesh(); mesh.controlPoints.push( new Vector4(0, 0, 0, 1), new Vector4(1, 0, 0, 1), new Vector4(1, 1, 0, 1), new Vector4(0, 1, 0, 1), ); mesh.createPolygon(0, 1, 2, 3); // quad const triangulated = mesh.triangulate(); console.log(Polygons after triangulation: ${triangulated.polygonCount}); // 2


---

### toMesh()

将网格返回为一个 `Mesh` 实例。对于 `Mesh` 对象而言，这是一种恒等操作；该方法在继承自的原始几何类型上更有意义。 `Geometry`.

```typescript
toMesh(): Mesh

Properties

Mesh

此网格实例。.

static union(a, b)

NOT IMPLEMENTED. 此方法在 API surface 中定义，但会抛出 Error('union is not implemented') 在运行时。不要在生产代码中调用它。.

对两个网格执行布尔并集。结果包含两个输入的组合体积。.

static union(a: Mesh, b: Mesh): Mesh

Properties

a Mesh

第一个网格操作数。.

b Mesh

第二个网格操作数。.

Properties

Mesh

一个表示以下并集的新的 mesh a 和 b.

Properties 

import { Mesh } from '@aspose/3d/entities';

// Assumes meshA and meshB are already populated Mesh instances
const combined = Mesh.union(meshA, meshB);
console.log(`Union polygon count: ${combined.polygonCount}`);

static difference(a, b)

NOT IMPLEMENTED. 此方法在 API surface 中定义，但会抛出 Error('difference is not implemented') 在运行时。不要在生产代码中调用它。.

执行布尔差运算，减去 mesh 的体积 b 从 mesh a.

static difference(a: Mesh, b: Mesh): Mesh

Properties

a Mesh

基础网格。.

b Mesh

要从中减去的网格 a.

Properties

Mesh

表示的新网格 a 减 b.

Properties

const result = Mesh.difference(meshA, meshB); console.log(Difference polygon count: ${result.polygonCount});


---

### static intersect(a, b)

**NOT IMPLEMENTED.** 此方法在 API 接口中已定义，但会抛出 `Error('intersect is not implemented')` 在运行时。不要在生产代码中调用它。.

对两个网格执行布尔交集。结果仅包含重叠的体积。.

```typescript
static intersect(a: Mesh, b: Mesh): Mesh

Properties

a Mesh

第一个网格操作数。.

b Mesh

第二个网格操作数。.

Properties

Mesh

表示交集的新网格 a 和 b.

Properties

const overlap = Mesh.intersect(meshA, meshB); console.log(Intersection polygon count: ${overlap.polygonCount});


---

### createElement(type, mapping?, reference?)

创建一个新的 `VertexElement` 在此网格上用于自定义每顶点属性的数据层。.

```typescript
createElement(
  type: VertexElementType,
  mapping?: MappingMode,
  reference?: ReferenceMode
): VertexElement

Properties

type VertexElementType

要创建的顶点属性类型（例如，, VertexElementType.Normal).

mapping MappingMode (可选)

元素数据如何映射到网格拓扑。默认值为 MappingMode.ControlPoint.

reference ReferenceMode (可选)

元素索引如何引用数据数组。默认值为 ReferenceMode.Direct.

Properties

VertexElement

新创建的顶点元素层。.

createElementUV(mapping, mappingMode?, referenceMode?)

在此网格上创建 UV 坐标层。.

createElementUV(
  mapping: TextureMapping,
  mappingMode?: MappingMode,
  referenceMode?: ReferenceMode
): VertexElementUV

Properties

mapping TextureMapping

要创建的 UV 通道（例如，, TextureMapping.Diffuse).

mappingMode MappingMode （可选）

UV 坐标如何映射到顶点。.

referenceMode ReferenceMode （可选）

UV 索引数据如何引用 UV 数组。.

Properties

VertexElementUV

新创建的 UV 元素图层。.

Properties 

import { Mesh } from '@aspose/3d/entities';
import { TextureMapping } from '@aspose/3d';

const mesh = new Mesh();
// ... define control points and polygons ...
const uvLayer = mesh.createElementUV(TextureMapping.Diffuse);
console.log(`UV element created: ${uvLayer !== undefined}`);
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