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The output of the Merge3D node used to assemble those planes into a scene is then fed to a UV Map node, which in conjunction with a Camera3D node correctly projects all of these planes into 3D space so they appear as they would through that camera in the scene. Prior to this UVMap projection, you can see the planes arranged in space at left, where each plane has the scene texture mapped to it.
At right is the image after the UVMap projection, where you can see that the scene once again looks “normal,” with the exception of a car-shaped hole introduced to the scene.
Five planes positioning a street scene in 3D space in preparation for UV Projection (left), and the UV Map node being used to project these planes so they appear as through a camera in the scene (right)
However, this is now a 3D scene, ready for a digital car to be placed within it, receiving reflections and lighting and casting shadows into the scene as if it were there.
The new 3D scene casting reflections and lighting onto a 3D car, and receiving shadows caused by the car
Geometry
There are five nodes used for creating geometry in Fusion. These nodes can be used for a variety of purposes. For instance, the Image Plane 3D is primarily used to place image clips into a 3D scene, while the Shapes node can add additional building elements to a 3D set, and Text 3D can add three- dimensional motion graphics for title sequences and commercials. Although each node is covered in more detail in the “3D Nodes” chapter, a summary of the 3D creation nodes is provided below.
The Cube 3D creates a cube with six inputs that allow mapping of different textures to each of the cube’s faces.
The Image Plane 3D is the basic node used to place a 2D image into a 3D scene with an automatically scaled plane.