LumberJocks

Experts Needed — Strange SketchUp Behavior

  • Advertise with us

« back to Woodworking Skill Share forum

Forum topic by Rich posted 07-23-2018 09:01 PM 1139 views 0 times favorited 26 replies Add to Favorites Watch
View Rich's profile

Rich

4555 posts in 1008 days


07-23-2018 09:01 PM

Topic tags/keywords: question

I have one I can’t figure out. I’m doing a Follow Me on a path on the surface of an object. When the path is a rectangle, it works as expected, but if it’s a circle, the result seems backwards.

Here is the before and after for the Follow Me on the rectangle. The shape is just a triangle, so I expect something along the lines of a raised panel, and that’s what I get.

But when the path is a circle, look what happens. It’s as if the Follow Me uses the shape flipped horizontally.

I can repeat it again and again, so there must be a reason for it but I can’t figure it out.

Any ideas?

-- Knowledge is not skill. Knowledge plus ten thousand times is skill. -- Shinichi Suzuki


26 replies so far

View JADobson's profile

JADobson

1443 posts in 2530 days


#1 posted 07-23-2018 09:17 PM

This is just a guess but what happens if you put the point of the triangle on the follow me line rather than the 90 degree corner? Does that change anything?

-- No craft is very far from the line beyond which is magic. -- Lord Dunsany — Instagram @grailwoodworks

View Rich's profile

Rich

4555 posts in 1008 days


#2 posted 07-23-2018 09:26 PM


This is just a guess but what happens if you put the point of the triangle on the follow me line rather than the 90 degree corner? Does that change anything?

- JADobson

Yes, it results in the raised panel look then. But what I don’t get is why on one it’s following the interior of the surface like I expect, but on the circle it’s following along the outside of the selected area. In both cases I have the surface and perimeter selected.

Centrifugal force, maybe? lol

-- Knowledge is not skill. Knowledge plus ten thousand times is skill. -- Shinichi Suzuki

View TungOil's profile

TungOil

1273 posts in 914 days


#3 posted 07-23-2018 10:20 PM

Gremlins

-- The optimist says "the glass is half full". The pessimist says "the glass is half empty". The engineer says "the glass is twice as big as it needs to be"

View lew's profile

lew

12806 posts in 4174 days


#4 posted 07-24-2018 06:56 PM

I think it has to do with the way the profile has to be drawn perpendicular to the path.

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View Rich's profile

Rich

4555 posts in 1008 days


#5 posted 07-24-2018 07:43 PM

Good point. The profile is parallel to the face of the object and the guide line is at an angle. I’ll try drawing the guide line first and referencing the circle to it.

Thanks for jumping in. This is pretty much just an academic exercise at this point, but it frustrates me when something seems inconsistent like that. I’ll let you know what happens.

-- Knowledge is not skill. Knowledge plus ten thousand times is skill. -- Shinichi Suzuki

View 000's profile

000

2859 posts in 1318 days


#6 posted 07-24-2018 07:46 PM

I replicated it with the triangle parallel to the face and it seemed to work for me.
(With both the guide line angled, and straight)

I’ve never actually tried it like that before. Learn something new all the time.

View 000's profile

000

2859 posts in 1318 days


#7 posted 07-24-2018 07:57 PM

I normally turn on x-ray and draw the triangle right on the circle. Though you have to hide the side, or zoom inside the box, to select the triangle with the follow me tool.

View 000's profile

000

2859 posts in 1318 days


#8 posted 07-24-2018 08:03 PM

Or, you can draw the box half thick, (to the bottom of your triangle).
Draw the circle and push/pull the circle up to the finished height.

Scale the top of the circle to the width of your triangle.

Then push/pull the top of your box to the top of your circle. viola!

So many ways to accomplish different tasks,
I love Sketchup!

View Rich's profile

Rich

4555 posts in 1008 days


#9 posted 07-24-2018 08:32 PM


So many ways to accomplish different tasks,
I love Sketchup!

- jbay

You’re definitely good at it. BTW, I know you make use of materials quite a bit. I found a great site recently with thousands of hi-res seamless textures. You can register for free and download low and medium resolution files, but for 12 euros a year (around $14) you can get the hi-res versions. Definitely worth it IMO.

https://www.sketchuptextureclub.com

-- Knowledge is not skill. Knowledge plus ten thousand times is skill. -- Shinichi Suzuki

View Rich's profile

Rich

4555 posts in 1008 days


#10 posted 07-24-2018 08:41 PM


I think it has to do with the way the profile has to be drawn perpendicular to the path.

- lew

I didn’t make any progress with that. I drew the profile parallel to the front face, pulled a guide line off the left edge and drew a circle tangent to it. I wound up with the profile oriented correctly, but following a much wider perimeter than the circle. Weird. Who knows what goes on down in the bowels of SketchUp. I developed software for 40 years and SketchUp still never ceases to amaze me.

Oh well, like I said it’s just an academic exercise. I’m pretty sure I’ll never be drawing circular raised panels anyway.

-- Knowledge is not skill. Knowledge plus ten thousand times is skill. -- Shinichi Suzuki

View 000's profile

000

2859 posts in 1318 days


#11 posted 07-25-2018 01:44 AM


I found a great site recently with thousands of hi-res seamless textures.

https://www.sketchuptextureclub.com

- Rich

Thanks, I’ll check it out.

I was replicating your circle again. This time I used the guide line and went off of one of the sections of the circle that was two lines away from the side, giving me more of an angle (triangle drawn parallel to face) and it gave me the same thing you were getting. So I can only think it is the angle of attack that is causing it.

Do you know about dividing a line?

View Rich's profile

Rich

4555 posts in 1008 days


#12 posted 07-25-2018 01:57 AM


Do you know about dividing a line?

- jbay

I don’t think so. I’m at a point where I can model pretty much anything I want to build. I’m working on getting up to speed on dynamic components. I modeled the mesquite side table in my project list right down to the glue blocks and animated the drawer. That was fun.

Tell me about dividing lines.

Oh, and do you use any rendering tools? I downloaded Twilight Render since it’s free but haven’t gotten much into it yet.

Also, I found a great automated dovetail plugin. It was posted here, but I don’t think the author is active on LJ since his posts about his plugin are about all he’s posted. It’s simple to use, free and has all of the features I need. In fact, I had first drawn my dovetails on my table drawer and when I found his plugin, I used it next to mine and they were identical.

http://seanregan.com/sketchup/dovetail/

-- Knowledge is not skill. Knowledge plus ten thousand times is skill. -- Shinichi Suzuki

View 000's profile

000

2859 posts in 1318 days


#13 posted 07-25-2018 02:16 AM

Dividing a line will smooth out your circle.
Draw a circle, select it, right click, select divide in the box.
Red dots will show up, move your curser around the circle and it will show you how many segments it is dividing the line into, When you get the number of segments you want just click. It will also give you the length of each segment as your moving the curser around the circle.
The only draw back is once you divide a line you have to select each segment of the circle.
Maybe someone can tell me how to turn the divided line back into one line, IDK how.

This is great for figuring equal lengths on a straight line also.


It’s hard to see in the picture but after you divide a line, go to “styles” under “edit” check the “endpoints” box
and it will show you the divisions on the line. when you are done uncheck the endpoint box and viola…

Play around with it, if you have any problems figuring it out, let me know.

View Rich's profile

Rich

4555 posts in 1008 days


#14 posted 07-25-2018 03:17 AM


Play around with it, if you have any problems figuring it out, let me know.

- jbay

I got it. That’s pretty easy. I’d been using guide lines to do the same thing, but that’s a lot better.

I watched a video that showed the difference between a 12-sided polygon and a circle modeled with 12 segments, pulled up into 3D, and how they may look the same but they behave differently. It’s one of those things I’ll have to watch a few more times before it sinks in completely.

-- Knowledge is not skill. Knowledge plus ten thousand times is skill. -- Shinichi Suzuki

View woodbutcherbynight's profile

woodbutcherbynight

5966 posts in 2828 days


#15 posted 07-25-2018 04:08 AM

I just draw my stuff on a piece of paper and use a ruler.

Just saying…......

ROFL

-- Live to tell the stories, they sound better that way.

showing 1 through 15 of 26 replies

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com