Graphics Programs Reference
In-Depth Information
The images that are used to create VR panoramas are highly distorted.
Therefore, the hotspots and direction arrows could not be added in
later in Photoshop because they would have to show exactly the same
distortion as the VR panorama image. It was therefore decided to model
these elements directly in 3D and to place them around each camera in
the position that they should be in the final panorama (see Figure 10.13).
To make things easier, each of these 3D elements had the LookAtMe
constraint applied. This means that they would always face square to the
camera, whatever be the camera's position. The Planes Look modifier was
also used: This is a part of the Itoosoft Forest Pro plug-in covered in the
following stage.
FiG 10.13 Placing the 3D hotspots
and direction arrows.
Stage 13: Adding the Vegetation
Objective : To increase the realism of the project. The height of the
vegetation also needed to be shown.
Data : Photos of trees and plants.
Tools : 3D Studio Max and Itoosoft Forest Pro plug-in.
Adding true 3D vegetation greatly increases rendering time. It was therefore
decided to use simple rectangular polygons oriented toward the camera.
These polygons had a tree or bush texture applied to them. These textures
also had an alpha channel applied to them in the material's Opacity Map field.
This knocked out the background of the texture, leaving only the vegetation
on a transparent background.
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