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Drawing 3d motion path

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bryanfordney

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Drawing 3d motion path

PostMon Feb 04, 2019 4:46 pm

Hi there, I'm attempting to animate an object traveling through 3D space, and I would like to have it follow a path.

In AE terms, I could achieve this by animating the object from point A to point B, and then adding points inbetween those in order to shape a curve. Then, set those inbetween keyframes to "Rove Across Time", which makes a keyframe behave more like a point on a path. It is not locked to any actual time; its time is interpolated automatically between keyframes A and B. This allows you to draw a motion path while controlling the actual speed of the animation with only the first and last key, and not all the inbetween keys.

Is there some way to achieve a similar result in Fusion? To create a 3d path of motion, but without all the little points along the path being tied down to specific frames in the timeline?

Thanks!
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Sander de Regt

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Re: Drawing 3d motion path

PostMon Feb 04, 2019 5:31 pm

I don't know if it is what you mean, but you can display the 3D motion path inside the viewport and add/delete/move points right in the viewer as well.

The x/y/z values of these paths can be adjusted/drawn inside the spline editor.
Sander de Regt

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bryanfordney

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Re: Drawing 3d motion path

PostMon Feb 04, 2019 6:31 pm

I see that I can drag this mid-point keyframe around, but is there any way to make a smooth curve, spatially, not temporally?

Sorry, that isn't very clear. I suppose what I am asking is, can you make a 3d spline (like a 1D mesh) and have something follow that spline through space at a constant rate?
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xunile

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Re: Drawing 3d motion path

PostMon Feb 04, 2019 7:02 pm

bryanfordney wrote:I see that I can drag this mid-point keyframe around, but is there any way to make a smooth curve, spatially, not temporally?

Sorry, that isn't very clear. I suppose what I am asking is, can you make a 3d spline (like a 1D mesh) and have something follow that spline through space at a constant rate?



Right click on the middle point of the path, and choose "Offset 3D Path>Smooth".
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Sander de Regt

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Re: Drawing 3d motion path

PostMon Feb 04, 2019 7:51 pm

Well, technically as soon as you put your 2d path in space it becomes 3d by default.
Like I said the 1d (as you call it) presentation of these points can be found in the spline editor.
But maybe I just don't understand what you're trying to achieve.
Sander de Regt

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