warp.volume\_index\_to\_world\_dir
==================================

.. function:: warp._src.lang.volume_index_to_world_dir(id: uint64, uvw: vec3f) -> vec3f

   .. hlist::
      :columns: 8

      * Kernel
      * Python
      * Differentiable

   Transform the direction ``uvw`` from the volume's index space to world space using the linear
   part of the volume's affine transform.
   
   For positions, use :func:`~warp.volume_index_to_world` instead.
   
   :param id: The ``id`` of a :class:`warp.Volume`.
   :param uvw: Direction in index space.
   
   :returns: The transformed direction in world space with ``float32`` precision. Translation is not
             applied, and the vector is not renormalized, so a scaling transform changes its length.
   
   See :func:`~warp.volume_index_to_world` for a usage example.

.. function:: warp._src.lang.volume_index_to_world_dir(id: uint64, uvw: vec3d) -> vec3d
   :noindex:

   .. hlist::
      :columns: 8

      * Kernel
      * Python
      * Differentiable

   Transform the direction ``uvw`` from the volume's index space to world space using the linear
   part of the volume's affine transform (float64 precision).
   
   The ``float64`` overload of :func:`~warp.volume_index_to_world_dir`. Behavior and usage match
   the default ``float32`` overload; see it for details and a usage example.