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204 Chapter 5: Creating Geometry
Star t Time—
The frame number where the ringwave
appears, and beg ins to g row if you choose Grow
and Stay or Cyclic Growth.
Grow T ime—The number of frames after Start
Timetheringwavetakestoreachfullsize.Grow
Time is available only if Grow and Stay or Cyclic
Growth is chosen.
End T ime—The frame number after which the
ringwave disappears.
Outer Edge Breakup group
Use these settings to change the shape of the
ringwave’s outer edge.
Tip: For effects like shock waves, the ringwave
typically has little or no breakup on the outer edge
but relatively massive breakup on the inner edge.
On—Turns on breakup of the outer edge. The
remaining parameters in this group are active only
when this is on. Default=off.
Major Cycles—Sets the number of m ajor waves
around the outer edge.
Width Flux—Sets the size of the major waves,
expressed as a percentage of the unmodulated
width.
Cr a w l Ti m e —Sets the number of f rames each
major wave takes to move around the outer
circumference of the RingWave.
Minor Cycles—Sets the number of random-sized
smaller waves in each m ajor cycle.
Width Flux—Sets the average size of the
smaller waves, expressed as a percent age of the
unmodulated width.
Cr a w l Ti m e —Sets the number of frames each minor
wavetakestomoveacrossitsrespectivemajor
wave.
Inner Edge Breakup group
Use these settings to change the shape of the
ringwave’s inner edge.
On—Turns on the breakup of the inner edge. The
remaining parameters in this group are ac t ive only
when this is on. Default=on.
Major Cycles—Sets the number of major waves
around the inner edge.
Width Flux—Sets the size of the major waves,
expressed as a percentage of the unmo dulated
width.
Cr a w l Ti m e —Sets the number of frames each
major wave takes to move around the inner
circumference of the RingWave.
Minor Cycles—Sets the number of random-sized
smallerwavesineachmajorcycle.
Width Flux—Sets the average size of the
smaller waves, expressed as a percentage of the
unmodulated width.
Cr a w l Ti m e—Sets the number of frames each minor
wavetakestomoveacrossitsrespectivemajor
wave.
Note: Negative values in the Crawl Time parameters
change the direction of the wave. To produce
interference patterns, use Crawl Time settings
of opposite sign for major and minor waves, but
similar Width Flux and Cycles settings.
Tip: To produce the best "random" results, use
prime numbers for major and minor cycles that
differ by a multiple of two to four. For example, a
majorwaveof11or17cyclesusingawidthflux
of 50 combined with a minor wa v e of 23 or 31
cycles w ith a width flux of 10 to 20 makes a nice
random-app earing edge.
Texture Coordinates—Sets up the required
coordinates for applying mapped ma terials to the
object. Default=on.