Extrude weirdness

[wgreenlee1]

Originally posted by sporktine
lo there, can anyone clear up the extrude surface tool for me? i'm experiencing a weird thing where if i make a simple line with the ep line tool (set to 1 for hard corners) then make a profile line, then set the extrude tool to polygons, the extrude goes all wonky. i have no idea what is going on at this point. anyone have any ideas?

What do you mean by "profile line"?

Do you want to scale the extrusion and extrude at the same time?

Ive never done it that way but are you selecting them in the proper order?

[sporktine]

what i'm trying make is the bumper from a pool table. i'm basically making a square line using four clicks of the ep tool, on setting 1, then making a kindof triangular line, much smaller, to use for the extrusion. theoretically, it should extrude around the square line, resulting in what looks like a pool table bumper. problem is it looks a lot different. lemme see if i can get you some screens...

hmmm and i discovered the problem. it seems that if your profile curve is not at the beginning of your path curve, the results are a bit strange. sorry if i wasted anyone's time.

[misterdi]

Yea, surface->extrude in Maya has way to many option.

But what I usually do to make thing easier,
1. Move your profile curve to the start point of the path curve, you can use snap to curve to make sure it is on the path.
2. Orient your profile curve so it is perpendicular to the path curve direction at start point (usually I'll throw in a tangency constraint and delete it afterward).
3. Do the extrusion.

This workflow will give you more predictable result, but of course if you familiar with all of the option in surface->extrude this step is not necessary.

Best regards,

[wgreenlee1]

Originally posted by misterdi
Yea, surface->extrude in Maya has way to many option.

But what I usually do to make thing easier,
1. Move your profile curve to the start point of the path curve, you can use snap to curve to make sure it is on the path.
2. Orient your profile curve so it is perpendicular to the path curve direction at start point (usually I'll throw in a tangency constraint and delete it afterward).
3. Do the extrusion.

This workflow will give you more predictable result, but of course if you familiar with all of the option in surface->extrude this step is not necessary.

Best regards,


Thats sounds cool....didnt know that.
Could you show a basic set up with the profile curve,where it should be sitting?

[misterdi]

I'm not good in explaining things, but here is screen snapshot of the workflow.

Actually it was written as a MEL script so you don't do it manually.

The idea is to help my student understanding all the option with extrusion, but at the same time help them to do their assignment easily.

I have to put as several message since this forum doesn't allow me to put bigger than 20Kb files.

Best regards,

[misterdi]

This is what happened when I use default setting on extrusion.

Not bad as an abstract thingy, but that's not what I want

[misterdi]

So, I move the profile curve to the start point of path curve using curve snapping.

[misterdi]

But orientation is still not perpendicular to the path curve, so I use tangency constraint to fix the orientation.

[misterdi]

And as the last step I do surface->extrude with default setting as tube.

And I got what I want.

[wgreenlee1]

Thanks misterdi,I thought he was refering to extrudeing polys and useing a path and profile curve....
Thats what threw me....
He is just setting the extruded path with polys enabled.

Sorry for the confusion.:banghead:

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