| Since | 17.5 |
int usd_attriblen(<stage>stage, string primpath, string name)
int usd_attriblen(<stage>stage, string primpath, string name, float timecode)
This function returns the length of a given attribute.
For array attributes it is the length of the array, and for non-array attributes the length is 1.
<stage>
When running in the context of a node (such as a wrangle LOP), this argument can be an integer representing the input number (starting at 0) to read the stage from. The integer is equivalent to the string form referencing a particular input, e.g., “opinput:0”.
You can also use this argument to refer to a USD file (e.g., “/path/to/file.usd”), or to another LOP node’s cooked stage using the op: as the path prefix (e.g., “op:/stage/lop_node”).
primpath
The path to the primitive.
name
Attribute name.
timecode
The USD time code at which to evaluate the attribute. A USD time code roughly corresponds to a frame in Houdini. If not given, the time code corresponding to the current frame is used.
Returns
The length of the array attribute, or 1 if the attribute is not an array. Use usd_isarray if you want to check whether the attribute is an array.
Examples ¶
// Get the array length of an attribute on the cube primitive. int length = usd_attriblen(0, "/geo/cube", "attribute_name");
| See also | |
| usd | |
| usd_attrib |