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Using the Ambient Occlusion glow to create an energy animation

From: CINEMA 4D: Rendering Motion Graphics for After Effects

Video: Using the Ambient Occlusion glow to create an energy animation

Just before our phone reveals in the animation we want to create the effect and the impression on the user that the pistons are pumping energy into the platform. In order to do that we need to create a reveal on these pistons that's a little bit different than the reveal that we used for the stadium effect. And so we've already got our reveal layer, but what we need to do is adjust the keyframes and tweak it just a little bit to get the effect we're looking for. So what I am going to do is go to the Glow Reveal that's on the Stadium_ao PRE layer. I am going to select that layer and then hit U on the keyboard to bring up the keyframes.

Using the Ambient Occlusion glow to create an energy animation

Just before our phone reveals in the animation we want to create the effect and the impression on the user that the pistons are pumping energy into the platform. In order to do that we need to create a reveal on these pistons that's a little bit different than the reveal that we used for the stadium effect. And so we've already got our reveal layer, but what we need to do is adjust the keyframes and tweak it just a little bit to get the effect we're looking for. So what I am going to do is go to the Glow Reveal that's on the Stadium_ao PRE layer. I am going to select that layer and then hit U on the keyboard to bring up the keyframes.

And then I am going to solo out the Stadium_ao PRE. That's going to give me much better feedback when I am scrubbing through this animation. And so I am going to back up in time to about here and just before the phone reveals, that's where I want the piston energy to peak, just before the phone comes out of the platform. But I can't see that energy and that's because of how the Glow Reveal is working. First thing I am going to do is kill all the keyframes on this Glow Reveal. And you notice it's the Glow Reveal for the Stadium_ao layer, not the other Glow Reveal.

So now what I can do is scrub backwards and forwards in time. You can see my glow is gone all the way through that process. So right around here is where I want it to be revealed, so really all I need to do is reverse this matte here. In order to do that, if I go to the Stadium_ao PRE layer and go to the Track Matte pulldown and I select this and go Alpha Inverted Matte, now I can see the glow. I could see the glow every place except on the platform and that's pretty much how I want it. So that's the point in time where I want the glow to be revealed. I am going to set X Rotation keyframe and a Scale keyframe for that object at that moment in time.

Now that's my ending point for the glow. So let's back up in time to about the point where we want the energy to start coming in. So I back up. You can see my glow fading out? I don't really want it to fade out, and that's happening because there is an Opacity keyframe on the Stadium_ao PRE layer. So if I select that and hit U on the keyboard, you can see there's my Opacity. I am going to kill the stopwatch on that and bring the Opacity up to 100%. Then right about the time where I want it to come in, it's going to be somewhere in this range here, about frame 19 or so.

That's pretty good! I don't want my glow to be seen before then so I'll just truncate that layer by dragging it over to that point in time. You notice I didn't shift the whole layer. I just dragged the in point over. Now, what I can do is take my Glow Reveal and I need to do two things. It needs to expand outward and it also needs to rotate a bit. So I am going to start off with the expansion. So I'll take the Scale and scale it way up, so somewhere in the 300% range. Then I am going to rotate it up in the position back to 0.

As you can see we're doing reverse of what we had before. So I am going to do it to just about there. So -43 or so ought to do the trick. You can see as I scrub forward in time, here comes that pulse energy right in, and you can see that pistons have the illusion that they're now pumping energy into that stand. I want the rotation to happen a little bit sooner. So I am going to bring that down, move that keyframe over here to about frame 23 or so. So what that's going to do is give us the illusion that the Glow Reveal is actually dropping into position first and then scaling inward towards the platform.

So now as I look at this, what I am looking for is sort of the pacing on that. And as I scrub through the animation I can see that right about here where this keyframe is, I really want to have more of the actual pistons be revealed. And so I am going to take the scale and scale it down just a bit so that I can see more of that piston glow. That way they have not as far to travel to that 0 point here. Then the other thing I am going to do is just where the phone emerges I am going to set that scale to be 0.

What that's going to do for me is make sure that I am not accidentally hiding any of the glow anywhere. So now it's going to drop into position and then hit its mark and then disappear completely. So now my entire glow is being revealed just the way I want it to. So as you can see the piston energy reveal that we used is quite a bit different than the stadium energy reveal that we used earlier. But what it does for us is it gives us the illusion that the pistons are pumping energy in that platform and that's going to cause that phone explosion to feel that much more intense.

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This video is part of

Image for CINEMA 4D: Rendering Motion Graphics for After Effects
 
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  1. 5m 48s
    1. Welcome
      57s
    2. Using the exercise files
      50s
    3. Essential plug-ins
      4m 1s
  2. 51m 44s
    1. Essential render settings
      6m 24s
    2. Setting up an object buffer list
      6m 17s
    3. Creating object buffer tags
      10m 48s
    4. Setting up multi-pass image layers
      5m 37s
    5. Creating an external compositing tag
      1m 47s
    6. Creating render passes using the Render Elements plug-in
      9m 39s
    7. Using Render Elements to optimize render passes
      5m 12s
    8. Batch rendering
      6m 0s
  3. 31m 33s
    1. Importing files and organizing an After Effects project
      6m 58s
    2. Creating a 3D object precomp
      3m 15s
    3. Attaching a video layer to a 3D object
      8m 17s
    4. Compositing 3D text
      2m 47s
    5. Compositing a dynamic 3D background
      4m 23s
    6. Setting markers for major events
      5m 53s
  4. 39m 46s
    1. Adding the Star Glow effect to a layer
      4m 32s
    2. Creating a glow on the stadium background
      5m 56s
    3. Revealing the background glow using a 3D layer mask
      7m 19s
    4. Creating a glow using the Ambient Occlusion pass
      6m 9s
    5. Using the Ambient Occlusion glow to create an energy animation
      4m 25s
    6. Creating a stadium light effect using object buffers
      4m 38s
    7. Adding flash bulbs with the CC Light Rays effect
      6m 47s
  5. 53m 16s
    1. Creating the phone reveal
      5m 10s
    2. Creating the phone reveal glow
      7m 49s
    3. Creating the phone reveal beams
      7m 17s
    4. Colorizing the energy beams
      6m 21s
    5. Creating the energy burst
      10m 19s
    6. Using Trapcode Particular to add sparks to the phone reveal
      10m 53s
    7. Creating the phone screen video
      5m 27s
  6. 15m 37s
    1. Creating the type glows
      9m 36s
    2. Adding the type glint
      6m 1s
  7. 34m 33s
    1. Creating a camera shake effect using precomps
      8m 12s
    2. Adding depth of field with the Lens Blur effect
      8m 14s
    3. Transitioning to full-screen video
      8m 17s
    4. Using the ReelSmart Motion Blur effect
      4m 17s
    5. Putting together the final comp
      5m 33s
  8. 1m 25s
    1. Next Steps
      1m 25s

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