Join EJ Hassenfratz for an in-depth discussion in this video Animating the turbines using the Time effector, part of Mograph Techniques: Creating a Sports Bumper.
With our scene filled with elements we modeled and textured, it's now time to start animating. So, let's go ahead and start with our turbine element here. Zoom in on that. So we got our turbine element right here. And if you look at our Cloner options, you can see we have this Offset parameter here. And if I scrub through this, you can see that that's actually animating the turbine blades the way that we would want it to actually animate. So, let's zero that out. And let's just record some keyframes, so we can animate that Offset parameter.
Let's make our project only 150 frames. And at frame zero, let's create a keyframe for the Offset. And then at frame 150, let's change the Offset to 520 and hit another keyframe. Now, let's go to our timeline and right now by default. Let's find our turbine Offset here. You can see we have this ease-in and ease-out. We want the turbine to have a constant speed throughout our animation. So I'm going to select both these keyframes and change the Spline interpolation to Linear.
So now it's a constant speed our entire animation. So now if I hit Play, you can see that our turbine is now spinning, and that's by just keyframing that Offset in our Cloner. Now for the rest of the elements in our scene that we'll animate, we're going to animate using a different method that doesn't require keyframes. I'm talking about the Flower Spline Panels here, and the Profile Spline Panels. So here's the Flower Spline Panels right here. Zoom in on this guy. So, I also want to have these slightly rotating just to give a little bit more movement to our scene.
And since it's made with a Cloner, we can use Effectors to animate this. And now I'm going to use a Time Effector. Now a Time Effector changes an object's parameters over time. So in this case we're going to use a Time Effector to change our object's rotation over time. So with our Flower Spline Panel selected, we're going to go to MoGraph > Time Effector and right now it has a rotation value of 90 mdh. And if I hit Play, you can see that that is rotating our panels over time.
No keyframes needed at all. So, say we wanted this to rotate even faster, we could just increase the angle of rotation. You can see that that's speeding it up even more over time. But for right now, let's just use 90 as our value that we'll use here. So, let's say you want this Profile Spline Panel to rotate the opposite direction and slower. So, let's go all the way down to the other end of our scene here, where our Profile Spline Panels are. Here they are. Right here. So, this is our Profile Spline Panel.
Now I'm going to use that same Time Effector. If I apply it, you can see that that's also rotating our panels down on this end of the scene. But the nice thing about the Time Effector is we have this time strength here. So if I wanted it to go slower and also rotate in the opposite direction. I can just put a negative value in here, and it will rotate counterclockwise. So you can see if it's a positive, it's rotating clockwise.
Negative value, rotating counterclockwise. And since it's at 20% strength, it's rotating at one fifth the speed of our turbine. So we have one Time Effector animating both elements. And just adjusting the strength on this other object to have it apply a different animation using that same Effector. So since all of our objects are driven by this one Time Effector, I can easily just overall increase the speed of all the objects in our scene. Or just slow them down. And I have full control over everything I animated with the Time Effector right here.
But we'll keep that at 90. So Time Effectors are a great way to animate objects without any keyframes.
- Modeling 3D elements with NURBs
- Animating with the Shader Effector
- Importing artwork from Illustrator with ArtSmart2 and Extruding
- Creating and applying textures
- Adding camera movement
- Lighting the scene
- Compositing in After Effects
- Adding optical flares and motion blur