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# tfg.rendering.camera.orthographic.ray

Computes the 3d ray for a 2d point (the z component of the ray is 1).

tfg.rendering.camera.orthographic.ray(
point_2d,
name=None
)

Defined in rendering/camera/orthographic.py.

Computes the 3d ray $$(r_x, r_y, 1)$$ for a 2d point $$(x', y')$$ on the image plane. For an orthographic camera the rays are constant over the image plane with

$$\begin{matrix} r_x = 0, & r_y = 0, & z = 1. \end{matrix}$$

#### Args:

• point_2d: A tensor of shape [A1, ..., An, 2], where the last dimension represents a 2d point.
• name: A name for this op that defaults to "orthographic_ray".

#### Returns:

A tensor of shape [A1, ..., An, 3], where the last dimension represents a 3d ray.

#### Raises:

• ValueError: If the shape of point_2d is not supported.