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

.. function:: warp._src.lang.volume_world_to_index(id: uint64, xyz: vec3f) -> vec3f

   .. hlist::
      :columns: 8

      * Kernel
      * Python
      * Differentiable

   Transform the point ``xyz`` from world space to the volume's index space (voxel coordinates)
   using the inverse of the volume's affine index-to-world transform.
   
   Applies the full affine map, including translation; the result may be passed as the ``uvw``
   argument of the volume sampling built-ins such as :func:`~warp.volume_sample`. For direction
   vectors, use :func:`~warp.volume_world_to_index_dir` instead.
   
   :param id: The ``id`` of a :class:`warp.Volume`.
   :param xyz: Point in world space.
   
   :returns: The transformed point in index space with ``float32`` precision.
   
   See :func:`~warp.volume_index_to_world` for a usage example.

.. function:: warp._src.lang.volume_world_to_index(id: uint64, xyz: vec3d) -> vec3d
   :noindex:

   .. hlist::
      :columns: 8

      * Kernel
      * Python
      * Differentiable

   Transform the point ``xyz`` from world space to the volume's index space (voxel coordinates)
   using the inverse of the volume's affine index-to-world transform (float64 precision).
   
   The ``float64`` overload of :func:`~warp.volume_world_to_index`. Behavior and usage match the
   default ``float32`` overload; see it for details and a usage example.