CLASS

MeshData

public class MeshData

Contains 3D mesh data for rendering and visualization.

MeshData provides access to 3D mesh geometry including vertices, indices, normals, and texture coordinates.

Overview

MeshData includes:

• Vertices: 3D position data for mesh geometry
• Indices: The triangles that make up the mesh
• Normals: Surface normal vectors for the vertices, commonly used for lighting calculations (only available for live meshing)
• UVs: Texture coordinates for the vertices, used for mapping textures to the mesh (only available for mesh downloader)

Example Usage

let (status, meshData) = meshDownloader.downloadMesh(meshId: meshId)
if status.isOk() {
    print("Mesh vertices: \(meshData.vertices.count)")
    print("Mesh triangles: \(meshData.indices.count / 3)")

    // Convert to SceneKit geometry for rendering
    if let geometry = meshData.toSCNGeometry() {
        let node = SCNNode(geometry: geometry)
        sceneView.scene.rootNode.addChildNode(node)
    }
}

Memory Management

Mesh data is backed by native memory that is automatically managed. The data remains valid as long as the MeshData instance exists.

Properties

verticesPtr

public let verticesPtr: UnsafeBufferPointer\<Float\>

Pointer to the vertices data. Array of 3 floats per vertex.

uvsPtr

public let uvsPtr: UnsafeBufferPointer\<Float\>?

Pointer to the UVs data. Array of 2 floats per UV.

indicesPtr

public let indicesPtr: UnsafeBufferPointer\<UInt32\>

Pointer to the indices data. Array of 3 indices per triangle.

normalsPtr

public let normalsPtr: UnsafeBufferPointer\<Float\>?

Pointer to the normals data. Array of 3 floats per normal. Only available for live meshing.

Methods

init(fromC:owner:)

public init(fromC cMeshData: ARDK_MeshData, owner: ResourceOwner? = nil)

toSCNGeometry(material:)

public func toSCNGeometry(material: SCNMaterial? = nil) -> SCNGeometry?

Creates a SceneKit geometry from this mesh chunk's vertex positions, normals and triangle indices.

• Parameter material: Optional material to apply to the resulting geometry.
• Returns: SCNGeometry representing the mesh.

Parameters

Name	Description
material	Optional material to apply to the resulting geometry.