![cinema 4d user buttons cinema 4d user buttons](https://i.pinimg.com/originals/10/68/10/1068100d8012dc2faf9347a8098bf831.jpg)
So I'm gonna go ahead and make a few tweaks to this and we'll come back once I've got it into a happy place. So it's also useful to note that you can turn that on. So if I choose Command + D and go to my Project Settings, go to Key Interpolation and choose this overdub mode, check that on, that should stop our F-curves from resetting themselves once we make changes. And that can be quite frustrating and a bit of a waste of time as well. So back in F-curve mode on the Y-axis, you can see that I had to keep fixing this point. You could actually just change that value so it comes in a bit closer and just set a new keyframe. And one thing we could do is use the zed value to make sure we've got our first keyframes selected. Move this back, and you can see we're actually getting some more points on the spline here. Now, we can just modify the interpolation. You can also select a couple of keyframes and just frame the selected ones as well. So I just come back into F-curve mode here, just frame that up a bit. Now I can just move those back closer to that first keyframe. And if I move my mouse up into the top part here, you can see the icon change. And what I want to do is just select and drag a selection, a little box, around all the little keyframes I'd like to move. And we can just use these buttons here as well to zoom out. So, an easy way to do that is to come back into key mode. So, what can we do to fix that? As we saw in the first movie, we can actually change the speed by bringing the keyframes closer. And we'll play it back and just see if we're getting any improvement. I'm just gonna work my way along using one to move the timeline. So let's just go through, break the handles, move these up, just try and get a sense of what's going on. And now, because they're broken, we don't have to hold the Shift key every single time. So we probably want this all to come down, bounce, and then bounce off quite sharply like so. So we can use the Shift key to just drag one handle and affect that. So we probably want a different interpolation between these points. And all I've done, just like with splines which we just learned about, we can just select a point and grab a handle and move it around like so. So let's start by manipulating some of these handles. You can see that gray line there which is our original motion path. But as soon as we start manipulating points, and if I just zoom in and you can move using one and zoom in using two, it might be quite hard to see. Now, we won't be able to see anything cause it looks exactly like our F-curve at the moment. So if we come to the F-curve menu here and choose Make Snapshot, Create Snapshot 1, and then we will say View Snapshot 1. One thing that can be useful when working with F-curves is to create a snapshot of where you were and you can see what kind of progress you've made. And we can see we're getting a sense of that motion if we just follow it down. So, the F-curve represents the interpolation between the keys. We'll just scale this down a bit so that we can see what we're doing. Tab to go into F-curve mode, and just once again, highlight the Y position. You can switch back to the standard view and press Shift + F3, get up your timeline.
![cinema 4d user buttons cinema 4d user buttons](https://i.ytimg.com/vi/ktBt4IfDZQ0/maxresdefault.jpg)
Another way of working would be to switch to the animate view and then you can get your timeline and your view here and it's all in one setup. There's no point in having that extra data there if we don't need to use it. You know what? Because the X is doing nothing, we can just delete that track. And the zed is doing something as well which we'll look at later. And also look at the X which should not be doing anything because it isn't traveling from side to side.
![cinema 4d user buttons cinema 4d user buttons](https://static.packt-cdn.com/products/9781849696166/graphics/6166OT_02_05.jpg)
So what I'm really interested in is the Y position for the most part. And this is where we want to be, F-curve mode.
Cinema 4d user buttons movie#
It can definitely be frustrating if you haven't quite got the hang of them, but hopefully after you've watched this movie you'll be totally fine with them.
![cinema 4d user buttons cinema 4d user buttons](https://www.rodenburg-verlag.de/wp-content/uploads/2017/01/Sitzen.jpg)
What we want to do now is manipulate the keyframes we've created using F-curves. And we have a ball bouncing down some stairs. This is where we left off in the previous movie.