Type Method

geometrySourceWithNormals:count:

Creates a geometry source from an array of normal vectors.

Declaration

+ (instancetype)geometrySourceWithNormals:(const SCNVector3 *)normals count:(NSInteger)count;

Parameters

normals

An array of three-component vectors, each of which represents a surface normal for the geometry source.

count

The number of normal vectors.

Return Value

A new geometry source whose SCNGeometrySource property is SCNGeometrySourceSemanticNormal.

Discussion

SceneKit converts this data to its own format to optimize rendering performance. To read the converted data, examine the properties of the created SCNGeometrySource object.

To create a custom SCNGeometry object from the geometry source, use the geometryWithSources:elements: method.

See Also

Creating Geometry Sources

+ geometrySourceWithVertices:count:

Creates a geometry source from an array of vertex positions.

+ geometrySourceWithTextureCoordinates:count:

Creates a geometry source from an array of texture coordinate points.