Trans RINA, Vol 153, Part C1, Intl J Marine Design, Jul - Dec 2011
manifests itself in the dramatic reduction in the size and weight of products such as mobile phones as well as the very existence of home computers. There are of course real physical limits to this development:
Electrical signals cannot travel faster than light, limiting the size of a machine (light travels approximately one foot in a nanosecond - the cycle time of a 1GHz machine)
Etched components and connections cannot be much smaller than the wavelength radiation used to do the etching
of the
There are several more 18-month cycles to go before these limits are reached. Most experts, including Moore himself, expect Moore's Law to be valid until around 2017.
6. OCEAN GENERATION TECHNIQUES
Historically the only possible ways to create an ocean within a 3d CAD package were to either create a flat plane that reflected everything like chrome. Or create curved lines simulating wave patterns on four sides then tile this surface to create an ocean. This is fine for low angled shots but shots from higher up or animation show the sea to be symmetrical and repeated. As technology
has progressed and advanced algorithms have been
written there are now a lot more realistic ways to generate an ocean surface:
Simple square plane rendered using a tiled bump map. This is very effective but is difficult to animate and requires more render time due to the displacement texture in the shader. Import a static ocean mesh
from plug in
programs such as Realflow or Houdini that use special python scripts to generate these meshes to look natural and to require the least amount of polygons for rendering.
Import or create a realistic animated ocean mesh. Creating such a mesh is relatively simple and can be achieved in a matter of hours. The problem of large render times comes when large bodies of water are created such as oceans as the computer has to calculate the movement for the whole area. There are ways to reduce the time by altering the movement and meshing i.e. Having the polygons reduced the further away from the camera with the ocean beyond a certain distance just a flat plane surface going to the horizon line.
Figure.1: Rendered image of stationary superyacht
C-42
©2011: The Royal Institution of Naval Architects
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