Class ARPlaneMeshGenerators

Generator methods for ARPlane mesh geometery.

Inheritance
Object
ARPlaneMeshGenerators
Inherited Members
Namespace: UnityEngine.XR.ARFoundation
Syntax
public static class ARPlaneMeshGenerators
Remarks

These static class provides ways to generate different parts of plane geometry, such as vertices, indices, normals, and UVs. You can use these methods to build an ARPlane Mesh object.

Methods

GenerateIndices(List<Int32>, List<Vector3>, Single)

Generates a List of indices from the given parameters, forming a triangle fan. The convexPolygon is assumed to be convex.

Declaration
public static bool GenerateIndices(List<int> indices, List<Vector3> convexPolygon, float areaTolerance = 1E-06F)
Parameters
Type Name Description
List<Int32> indices

The List to write results to.
List<Vector3> convexPolygon

The vertices of the plane's boundary, in plane-space.
Single areaTolerance

If any triangle in the generated mesh is less than this, then the entire mesh is ignored.
Returns
Type Description
Boolean

True if the indices were generated, False if a triangle whose area is less than areaTolerance is found.
Remarks

convexPolygon is not checked for its convexness. Concave polygons will produce incorrect results.

GenerateMesh(Mesh, Pose, NativeArray<Vector2>, Single)

Generates a Mesh from the given parameters. The convexPolygon is assumed to be convex.

Declaration
public static bool GenerateMesh(Mesh mesh, Pose pose, NativeArray<Vector2> convexPolygon, float areaTolerance = 1E-06F)
Parameters
Type Name Description
Mesh mesh

The Mesh to write results to.
Pose pose

The session-space pose of the mesh.
NativeArray<Vector2> convexPolygon

The vertices of the plane's boundary, in plane-space.
Single areaTolerance

If any triangle in the generated mesh is less than this, then the entire mesh is ignored. This handles an edge case which prevents degenerate or very small triangles. Units are meters-squared.
Returns
Type Description
Boolean

True if the mesh was generated, False otherwise. The mesh might fail to generate if it is not a valid polygon (too few vertices) or if it contains degenerate triangles (area smaller than areaTolerance).
Remarks

convexPolygon is not checked for its convexness. Concave polygons will produce incorrect results.

GenerateUvs(List<Vector2>, Pose, List<Vector3>)

Generates a List of UVs from the given parameters.

Declaration
public static void GenerateUvs(List<Vector2> Uvs, Pose pose, List<Vector3> vertices)
Parameters
Type Name Description
List<Vector2> Uvs

The List to write results to.
Pose pose

The session-space pose of the mesh.
List<Vector3> vertices

The vertices of the plane's boundary, in plane-space.