70 lines
1.9 KiB

.. index:: Geometry Nodes; Raycast
.. _bpy.types.GeometryNodeRaycast:
Raycast Node
.. figure:: /images/node-types_GeometryNodeRaycast.webp
:align: center
:alt: Raycast node.
The *Raycast* node intersects rays from one geometry onto another. The source geometry is defined by
the context of the node that the *Raycast* node is connected to.
Each ray computes hit points on the target mesh and outputs normals, distances
and any surface attribute specified.
Target Geometry
Geometry that rays are tested against.
An optional field input evaluated on the *Target Geometry* that will be interpolated at the hit points.
The resulting values are outputted with the *Attribute* output.
Source Position
The position from where to start each ray. By default, this is the same as
if the :doc:`/modeling/geometry_nodes/geometry/read/position` was connected.
Ray Direction
Direction of each ray from the starting position.
The field is evaluated on the geometry from the context of the field evaluation, not the *Target Geometry*.
Ray Length
Maximum distance a ray can travel before being considered "no hit".
How attributes of the target mesh are mapped to the attribute values on the result geometry.
Vertex and corner attributes are interpolated smoothly, with a bilinear function.
Choose the value of the closest vertex without interpolating.
Is Hit
Boolean output that is true for each ray which has hit the *Target Geometry*.
Hit Position
The location of the intersection point with the target mesh.
Hit Normal
The surface :term:`Normal` vector at the hit location.
Hit Distance
The distance from the ray origin to the *Hit Position*.
Interpolated values of the *Attribute* input sampled at the *Hit Position*.