Traced Object: Using a traced object from modeller is
usually easier to line up than the clip map method. You can show the
object in wireframe and simply drag it into position and see the edges
real time.
However, the clip mapped plane can give a more accurate edge
but is difficult to line up without previewing a number of renders to view
the clip mapped edge.
Next you need your 3D object that you are adding to your scene.
If you installed the objects with L[6] then you can load smallplane.lwo
from the vehicles directory and fly it into your scene. If you don't have
the plane, any flying craft will do.
Note: I thought the UFO object has just simply been done to many
times... Anyway, load it in and place it JUST behind your island object in
the top view and scale it down if you need to match it to your current
scene and grid setting.
Notice that your island object can now block the 3D plane in behind
the real image. If you don't need to cast shadows onto the island than all
you need to do is make it have a front projection image of the background
and it will appear the same as the background but the plane can actually
fly between them.
However, you need to make sure that the color and intensity is
identical on the island object as the backgound image will be. In order to
do this you need to set the following surface parameters of the island:
COLOR: TEXTURE: Front mapping of the background image.
"Pixel Blending" OFF
"Texture Antialiasing" OFF LUMINOSITY: 100% DIFFUSE: 0%
Now you need to fly the plane from behind the island and have it bank
towards the camera and fly overhead much closer. The important part of
this composite will be the shadow on the water surface. There are two ways
to composite a shadow onto the water.