Relevant to the musical applications of cellular automata, this is a patch that controls a bank of 128 oscillators based on the on-off state of a row of cells in a Jitter matrix that is generated by some very simple rules of a cellular automaton.
The OpenGL object jit.gl.gridshape allows you to create and render standard 3D geometrical shapes (cube, sphere, cone, etc.). It creates those shapes using a number of polygons attached together on a grid, thus its name. To make those objects look a bit more interesting—either more realistic or more unusual—you can apply a texture to the surface of the object. The visual content of the texture comes from a 2D image matrix (e.g., jit.matrix) which then gets wrapped around the object's surface.
This example shows how to create and render a 3D shape in OpenGL. You can read about the meaning of some of the different attributes in Jitter Tutorial 33: Polygon Modes, Colors, and Blending and in the Max reference manual listing of common attributes and messages of Jitter GL objects.
To jump immediately to a new location in a movie, you can send the frame message to jit.movie (or jit.qt.movie). To crossfade to a new location, instead of a jump cut, you need to be playing the video twice, and crossfade from the current video to the second video, after which you can stop playing the first video. To do that again, you can just reverse the process: start the first video at the new location, crossfade back to the first video, and stop playing the second one.
You can make a crossfade between two videos or betwen two sounds by multiplying the amplitude of one of them by values going progressively from 1 to 0 while you multiply the other by values going progressively from 0 to 1. In this example, we use a slider object that outputs values from 0 to 1 to control the volume of two movie soundtracks, using the vol attribute of jit.qt.movie (or jit.movie).
One method of subtitling a video is shown in the example "Write subtitles onto a video". That shows hot to use the jit.lcd object in Jitter, and add its output to that of a jit.movie object. Another method is to render both video and text in GL using the jit.gl.videoplane and jit.gl.text objects.
You can use the gettime message to ask jit.qt.movie for a report of its video's current time location (in QuickTime time units). The report comes out of the right outlet of jit.qt.movie as the word time followed by the current time.