I’m trying to make an animation of an cylinder wich extrudes its z-value along a curve-path (arc-shaped), so in frame 1 the tube is still flat, and in it’s last frame the tube is as ‘long’ as the path and has the same shape as the path. Which constraint do I need to use? Follow path, or stretch to? I don’t seem to find the right solution, can anyone help me with this?
Neither. You can annimate the Curve Path, either with RVK’s (Shapes in 2.4), a Lattice, or with an Armature.
So you can’t animate a BevOb?
I used the BevOb to extrude an BezierCircle along a Path, but now I want this BezierCircle to extrude along this path in a time-span. This can not be done? Thanx for your help so far.
Maybe you can use Curve deform, with a plane parented to a path. Then try Loc IPO to move along the path and a Size IPO to extrude your mesh.
Yes, that’s exactly what I want to do! (I mean the ribbon effect)
I’m gonna try that! Thanx!
Actually, It can be done much easier :-? , by using the BevOb en the TaperOb, although I find the TaperOb a bit weird, you actually animate the TaperOb curve with vertex IPO’s. But it worked for me!
Thanx for the tutorial link (it was very useful!)
Hi there again, I’m almost there.
As I explained earlier, I’m using a curve-path with a circle as a BevOb and an animated line as TaperOb. This TaperOb is like an horizontal line with a smal vertical line in frame 1, in the last frame the vertical line is stretch out all over the horizontal line, so it becomes like a sort rectangle, (hard to discribe without attachment) well that’s going wonderfull, but in frame 1 there’s still a very thin line visible of the curve-path (also in rendering), that shouldn’t be there. How can I solve this, has it got something to do with the TaperOb?
Never mind, I got it, all the horizontal vertices of the TaperOb should have a z value of 0 (local)
Lots has happened since I was here. I was suggesting that you just animate the original Path Curve, but good to see you sorted it out.