vector usd_pointinstance_getbbox_min(<stage>stage, string primpath, int instance_index, string purpose)
Computes the smallest position of the bounding box for the instance geometry.
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".
The path to the primitive.
The index of the instance whose bounding box to return.
The primitive’s purpose for which to return the bounding box minimum (e.g., "render").
The minimum position of the instance’s bounding box.
// Get the min of the first instance's boundsng box. vector min = usd_pointinstance_getbbox_min(0, "/src/instanced_spheres", 0, "render");