User manual DIGITAL ANARCHY PSUNAMI

[. . . ] PSUNAMI WHAT IS PSUNAMI? Digital Anarchy Psunami is a plug-in for Adobe After Effects 4. 0 or later, which simulates photorealistic oceans and skies. Psunami creates the illusion of real water and air by modeling the true physics of large-body water and atmospheric systems. This is accomplished by creating a genuine 3D environment within After Effects, with polygonal modeling, geometric displacement mapping, a 3D animatable camera, animatable light sources, and raytracing with reflections and texture mapping. Within this environment, you can fully animate the camera in three dimensions, precisely control waves and swells in the ocean surface, simulate haze and rainbows in the atmosphere, and animate two "suns" at once, for fine lighting control. [. . . ] Since each channel in an image in After Effects contains a full range of 256 values, only one channel of your image can be used for displacement. Use DISPLACE ON to set which channel of your image map will be used for displacement. Since displacement mapping with different channels of a full-color image can give widely varying results, it's a good idea to experiment with various DISPLACE ON options when testing a displacement map. Note that Psunami always uses the transparency information in your image's alpha channel when displacing on color channels. In other words, if you have an image of text with a white alpha in the shape of the text and the rest of the alpha black, Psunami will knock out the background of your image before extracting the selected channel for displacement. For example, if there wasn't an alpha channel in the image we're going to use for displacement, the black background would render as a flat depressed area all around the text. 36 PSUNAMI IMAGE MAPS Red Green Blue Alpha 37 IMAGE MAPS PSUNAMI Luminance Lightness Hue Saturation Luminance is the brightness component of your image map. Psunami calculates the luminance value of a pixel by averaging the three red, green and blue values of the pixel together to generate the brightness of the pixel. Lightness is similar to luminance, but is generated using a different method; the lightness value of a pixel is calculated by finding the average value between the brightest and darkest of the three color values in the pixel. HLS, or the Hue/Lightness/Saturation color system, defines color as a position on a color wheel. Hue is the angle of the position of the color point on the wheel relative to 0 degrees. HLS defines saturation as the linear distance of a point on the color wheel from the center of the wheel. As you can see, Hue and Saturation generally do not produce satisfactory displacement mapping, and Red, Green, and Blue rarely produce positive displacement. In most cases, you'll get the best results from the Alpha, Luminance, or Lightness DISPLACE ON options. You can view the Luminance, Lightness, Hue, and Saturation color components in Grayscale (Icons) RENDER MODE, by the way. 38 PSUNAMI IMAGE MAPS Displace Intensity DISPLACE INTENSITY sets the amount of displacement your map will produce. A value of 0 causes no displacement; higher displacement values will produce a higher average displacement. The image on the left shows a Displace + Texture On image map, displacing on the alpha channel with a DISPLACE INTENSITY value of 2. The image on the right shows a DISPLACE INTENSITY value of 10. Negative displacement values invert the normal displacement order, so that light pixels push the mesh down and dark pixels push the mesh up. The image below shows the same displacement map with a value of ­5. You can animate this value to have a logo rise out the sea, for example. 39 IMAGE MAPS PSUNAMI Center X (M), Center Y (M) CENTER X and CENTER Y let you set the position of your image map, in meters, on the ocean surface, relative to the center of the ocean grayscale map seen in the Grayscale RENDER MODES. When you're looking at the ocean surface in Grayscale (Icons) RENDER MODE, the image map's x position is along the left/right axis, and the y position is along the up/down axis. The image below left shows an image map with a CENTER X value of 50 meters and a CENTER Y value of 0. CENTER X and Y values are relative to the center of the grayscale image. Positive X values will position your image map to the right or east of the center of the grayscale image; negative X values will position your image map to the left or west of the center of the grayscale image. [. . . ] Except as stated above, this agreement does not grant you any intellectual property rights in the Software. You may not rent, lease, sublicense or lend the Software, Documentation, or Product Videos. You may, however, transfer all your rights to use the Software to another person or legal entity provided that you transfer this Agreement, the Software, including all copies, updates, and prior versions, all Documentation, and Product Videos to such person or entity and that you retain no copies. 4. If this package contains, or, in connection with the acquisition of the Software contained in this package you receive, two or more operating environment versions (e. g. , Macintosh® or WindowsTM), and/or otherwise you receive two or more copies of the Software, the total aggregate number of computers on which all versions of the Software are used may not exceed one except under the conditions stated above. [. . . ]