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Alternative Radio Wave Technique ?
I seem to have a problem getting the radio wave effect to only occur when an extruded bulge occurs. My question is does anyone know of another technique to create a radio wave effect that I may have a little more control over ?
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33 Replies
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What does OpenGL have to do with radio waves is what I would like to know ? My question is a question because I’m trying to get a expression going with it and another effect.
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I agree with you Christopher. Radio Waves is difficult to control. It emits a wave at the beginning even if you don’t want it.
Although I haven’t tried it, maybe using a layer with a mask would work. You could control the mask expansion in an expression. You would also need something to continue the expansion after you trigger it.
Ken Knowles
Knowles-McNiff -
I’m not sure exactly what you’re trying to accomplish, but it sounds a bit like the reverse of an effect I did a while back. I was creating a “blast wave distortion” that emanated from an on-screen event (in my case, a good football catch). I used radio-waves (or just masked circles), rotated them in 3D to match the angle of my footage, then turned them off and used their black-white values and Effects>Displacement Map to make the “shockwave” emanate from my touchdown pass.
Does that sound at all inspiring for what you’re trying to achieve?
Antifreeze Design
https://www.antifreezemotiongraphics.com -
I’m not sure exactly what you’re trying to accomplish, but it sounds a bit like the reverse of an effect I did a while back. I was creating a “blast wave distortion” that emanated from an on-screen event (in my case, a good football catch). I used radio-waves (or just masked circles), rotated them in 3D to match the angle of my footage, then turned them off and used their black-white values and Effects>Displacement Map to make the “shockwave” emanate from my touchdown pass.
Does that sound at all inspiring for what you’re trying to achieve?
This does sound inspiring, could I see an example hopefully you hit it on the nail.
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Although I haven’t tried it, maybe using a layer with a mask would work. You could control the mask expansion in an expression. You would also need something to continue the expansion after you trigger it.
They are difficult, good for radio broadcast waves, maybe a few other things but then I think you hit it’s limits. Two excellent ideas if you have some time could you show an example Ken ?
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I’ve uploaded a sample here:
https://www.antifreezedesign.com/user/cow/radialRings.mov/Let me know if you have trouble viewing it. (there’s a jpg there too)
Cheers.
-GregAntifreeze Design
https://www.antifreezemotiongraphics.com -
Greg,
That is a very cool effect. Masks and displacement map, eh? Very nice.
Ken Knowles
Knowles-McNiff -
Take a look at what Greg posted. Is that what you are looking for?
Ken Knowles
Knowles-McNiff -
Thanks. There’s a lot you can do to make the effect cool, and now that I’m looking at it, I probably abandoned radial waves for more control simply using animated masks over a solid.
Here are some refinements that are fun to play with:
1. Once you’ve got your animated solid ring, try adjusting (or animating) the width of the feathered edge. A fairly tight leading edge, and a soft trailing edge will look a lot more realistic, like the shockwave is trailing off.
2. Notice that I’ve decreased the opacity of each additional ring, to give it less and less effect as additional rings happen.
3. I’ve also added a bit of particles and lens flare/hotspot to add to the effect.
4. You could try a hint of camera jiggle/bump at the moment of impact (although this would technically only happen if the camera operator was startled, not from the wave–which hasn’t reached the camera yet)
5. If you get really crazy, you can try mapping in some animated fractal noise (turbulent wavy works great) into your ring coming off. Instead of a more or less solid ring, you get something that looks like heat distortion or trailing vapors. (Also try pre-effecting the distortion with a pucker (flo motion) at the center so that all of the “vapors” are more or less pointed toward the inital point of impact)Fun, fun!
Antifreeze Design
https://www.antifreezemotiongraphics.com -
That was a interesting wave effect. Although I need more solid waves to appear as in your which are transparent I know it can be done either way, but I don’t quite understand the foundation on how you do it ?
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