分割网格

每个素材分割场景的所有网格

开发人员可能需要将场景的所有网格拆分为每个材质的几个子网格。如果已为场景指定了单个材质,则SplitMesh方法不会拆分场景的网格。开发人员现在可以使用 Aspose.3D for .NET API 来实现此目的。

下面的代码示例按材质拆分场景的所有网格。每个子网格共享相同的直接数据,并且仅在索引上有所不同。

// For complete examples and data files, please go to https://github.com/aspose-3d/Aspose.3D-for-.NET
// The path to the documents directory.
string input = RunExamples.GetDataFilePath("test.fbx");

// Load a 3D file
Scene scene = new Scene(input);
// Split all meshes
PolygonModifier.SplitMesh(scene, SplitMeshPolicy.CloneData);

// Save file
var output = RunExamples.GetOutputFilePath("test-splitted.fbx");
scene.Save(output, FileFormat.FBX7500ASCII);

通过指定材质来分割网格

Aspose.3D for .NET API 允许开发人员通过手动指定材质来拆分网格。“分割网格” 选项创建单独的对象,每个子网格将仅使用一种材质。

分割盒子的网格

此帮助主题创建了框的网格,以保持代码的全面和简短。开发人员可以按照以下帮助主题中的说明手动构建网格: 创建 3D 立方体网格。此外,一个盒子由6个平面组成,每个平面将成为一个子网格。下面的代码示例通过手动指定材质来拆分原始网格。

// For complete examples and data files, please go to https://github.com/aspose-3d/Aspose.3D-for-.NET

            // Create a mesh of box(A box is composed by 6 planes)
            Mesh box = (new Box()).ToMesh();
            // Create a material element on this mesh
            VertexElementMaterial mat = (VertexElementMaterial)box.CreateElement(VertexElementType.Material, MappingMode.Polygon, ReferenceMode.Index);
            // And specify different material index for each plane
            mat.Indices.AddRange(new int[] { 0, 1, 2, 3, 4, 5 });
            // Now split it into 6 sub meshes, we specified 6 different materials on each plane, each plane will become a sub mesh.
            // We used the CloneData policy, each plane will has the same control point information or control point-based vertex element information.
            Mesh[] planes = PolygonModifier.SplitMesh(box, SplitMeshPolicy.CloneData);

            mat.Indices.Clear();
            mat.Indices.AddRange(new int[] { 0, 0, 0, 1, 1, 1 });
            // Now split it into 2 sub meshes, first mesh will contains 0/1/2 planes, and second mesh will contains the 3/4/5th planes.
            // We used the CompactData policy, each plane will has its own control point information or control point-based vertex element information.
            planes = PolygonModifier.SplitMesh(box, SplitMeshPolicy.CompactData);