Creates a Primitive to visualize well-known vector vertex attributes: normal, tangent, and bitangent. Normal is red; tangent is green; and bitangent is blue. If an attribute is not present, it is not drawn.
Name Type Description
options Object Object with the following properties:
Name Type Default Description
geometry Geometry The Geometry instance with the attribute.
length Number 10000.0 optional The length of each line segment in meters. This can be negative to point the vector in the opposite direction.
modelMatrix Matrix4 Matrix4.IDENTITY optional The model matrix that transforms to transform the geometry from model to world coordinates.
A new Primitive instance with geometry for the vectors.
   geometry : instance.geometry,
   length : 100000.0,
   modelMatrix : instance.modelMatrix