<type> vertexattrib(<geometry>geometry, string attribute_name, int linear_vertex_index, int &success)
<type>[] vertexattrib(<geometry>geometry, string attribute_name, int linear_vertex_index, int &success)
Unlike vertex, this function does not have a version that takes a primitive number and primitive vertex number. If you have a primitive number and primitive vertex number, you can convert them into a linear index using vertexindex.
<geometry>
When running in the context of a node (such as a wrangle SOP), this argument can be an integer representing the input number (starting at 0) to read the geometry from.
Alternatively, the argument can be a string specifying a geometry file (for example, a .bgeo
) to read from. When running inside Houdini, this can be an op:/path/to/sop
reference.
attribute_name
The name of the attribute (or intrinsic) to read.
linear_vertex_index
A linear index into the list of all vertices. If you have a primitive number and primitive vertex number, you can convert them into a linear index using vertexindex.
success
The function overwrites this variable with 1
if the attribute exists and was read successfully, or 0
otherwise.
Returns
The value of the given attribute on the given point number.
attrib |
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vertex |
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