& Construction
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Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
& Manufacturing
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Professional CAD/CAM tools built on Inventor and AutoCAD
Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
Professional CAD/CAM tools built on Inventor and AutoCAD
Transcript
00:00
So, I'm going to animate the opening of this trunk and have a look at how we can ease the motion in and out of the keyframes.
00:08
I'll use the Menu Set Keyframe tool to start with because in the options here, it shows us the tangent types,
00:15
and this is what we can use to ease the motion.
00:18
So, I'll start with the default value of Smooth and set the keyframe for 0.
00:23
And then at frame 30, I'll rotate the trunk so that it's open.
00:29
And now even if I use the Context Set Keyframe tool here, it's still referring to the main menu settings.
00:37
So, we get a pretty constant motion for the trunk opening.
00:41
So, if I take a look at the parameters here, and I'll just delete my static actions, make it easier to see
00:47
this Tangent setting is available on each keyframe, and I can change that if I want to.
00:52
So, let's try Flat, for example, on this one, and I'll do the same on this one.
00:57
Now the tangent types make a very subtle difference, so let's look at them side by side.
01:04
The Smooth in fact, gives the same result as a Linear when there's only two keyframes, and you get a completely constant motion.
01:11
Whereas the Flat tangent has eased in with a slow start and a slow end to the motion.
01:19
So, the difference between Linear and Smooth becomes clear when we set more than two keyframes.
01:24
So, this time, I'm going to use the Set Keyframe At tool.
01:28
And this has exactly the same setups for the Tangent Type, and I'll keep it simple by just choosing Linear to start with.
01:36
And this tool allows me to type in a series of keyframes, so I'm just going to do a Start and an End in that position.
01:43
And then if I rotate that to the open position, I can use the Set Keyframe again.
01:49
And I'll set it to, say, 30 and 50, to just hold it up at the top.
01:53
And you can see it's set the four keyframes there.
01:56
So that then opens, holds, and closes.
02:04
So, if we take a look at how the different tangent settings would affect that motion,
02:08
you can see it's a fairly subtle difference.
02:12
But if we take some snapshots, then the linear and the flat are as we would expect,
02:18
and the smooth gives a nice result, but it has this bounce at the top because it's fitting a Bezier curve through those four key points.
Video transcript
00:00
So, I'm going to animate the opening of this trunk and have a look at how we can ease the motion in and out of the keyframes.
00:08
I'll use the Menu Set Keyframe tool to start with because in the options here, it shows us the tangent types,
00:15
and this is what we can use to ease the motion.
00:18
So, I'll start with the default value of Smooth and set the keyframe for 0.
00:23
And then at frame 30, I'll rotate the trunk so that it's open.
00:29
And now even if I use the Context Set Keyframe tool here, it's still referring to the main menu settings.
00:37
So, we get a pretty constant motion for the trunk opening.
00:41
So, if I take a look at the parameters here, and I'll just delete my static actions, make it easier to see
00:47
this Tangent setting is available on each keyframe, and I can change that if I want to.
00:52
So, let's try Flat, for example, on this one, and I'll do the same on this one.
00:57
Now the tangent types make a very subtle difference, so let's look at them side by side.
01:04
The Smooth in fact, gives the same result as a Linear when there's only two keyframes, and you get a completely constant motion.
01:11
Whereas the Flat tangent has eased in with a slow start and a slow end to the motion.
01:19
So, the difference between Linear and Smooth becomes clear when we set more than two keyframes.
01:24
So, this time, I'm going to use the Set Keyframe At tool.
01:28
And this has exactly the same setups for the Tangent Type, and I'll keep it simple by just choosing Linear to start with.
01:36
And this tool allows me to type in a series of keyframes, so I'm just going to do a Start and an End in that position.
01:43
And then if I rotate that to the open position, I can use the Set Keyframe again.
01:49
And I'll set it to, say, 30 and 50, to just hold it up at the top.
01:53
And you can see it's set the four keyframes there.
01:56
So that then opens, holds, and closes.
02:04
So, if we take a look at how the different tangent settings would affect that motion,
02:08
you can see it's a fairly subtle difference.
02:12
But if we take some snapshots, then the linear and the flat are as we would expect,
02:18
and the smooth gives a nice result, but it has this bounce at the top because it's fitting a Bezier curve through those four key points.
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