warp.transform\_identity
========================

.. currentmodule:: warp._src.lang

.. function:: transform_identity(dtype: Float = ...) -> transformf

   .. wp-function-tags::
      :kernel: true
      :python: true
      :differentiable: false

   Construct an identity transform with zero translation and identity rotation.
   
   The result is neutral under composition and leaves points and vectors unchanged. Unlike a
   zero-argument :func:`~warp.transformation`, it contains a valid rotation quaternion.
   
   :param dtype: Scalar type of the components. Defaults to ``float32``.
   
   :returns: The identity transformation.
   
   .. rubric:: Example
   
   .. testcode::
   
       @wp.kernel
       def reset(out: wp.array[wp.transform]):
           i = wp.tid()
           out[i] = wp.transform_identity()
   
       out = wp.empty(2, dtype=wp.transform)
       wp.launch(reset, dim=out.shape, outputs=[out])
       print(out.numpy())
   
   .. testoutput::
   
       [[0. 0. 0. 0. 0. 0. 1.]
        [0. 0. 0. 0. 0. 0. 1.]]