Mini-challenge

jeff hammond

Perhaps I was joking, perhaps not, but what have I got to lose. I'm gettin' out my pen and paper right now.

Something smells fishy around here.

it seems simple but it's actually hard to pull off in sketchup.

just throwing it out there to see if someone comes up with something more slick than how I've been doing it.

(edit-) as in, my current method isn't very slick.

jeff hammond

@brookefox said:

Gimme a model?

you can make up your own dimensions as they're not (entirely) important.. (it's mainly about getting the parallel lines of the pink board in there like that)

[EDIT] oh wait, the width_of_ board dimension is critical but you can make that dimension up if you want.. you just have to choose what it is first then draw it..

but here's a starting model anyway..

mini__.skp

ninopiamonte

Can you give something more details about this challenge?

jeff hammond

@ninopiamonte said:

Can you give something more details about this challenge?

you mean like prizes and stuff?

this is a fairly common situation in framing when an X-brace is required.. often, you're able to just trace them onsite but other times you can't (other walls in the way etc..).. either way, it's nice if you just have the right dimensions in the first place..

another example of the same problem.. (2x4 wall frames connected by a brace)

so the the challenge is for you to show your technique (probably via screenshots, .skp, or video) showing the best way you can come up with to draw the brace board in order to obtain proper dimensions for it.

[and i'll act as the judge ]

thomthom

Still not getting it... too early in the morning - haven't had my tea yet.

pilou

My little try

jeff hammond

@unknownuser said:

My little try

[attachment=0:259w4kne]Chall.jpg[/attachment:259w4kne]

in step 2, how do you know where to draw the line ? (at which height ?)

like i said earlier, your board has to be a predetermined width…

pilou

It was made step 3

But if you want better

jeff hammond

@pbacot said:

I just draw a 2x4 and rotate it then cut with two uprights...?

doesn't work… (unless you're just sorta eyeing it into place.. but this isn't horseshoes )

that's why this is tough

pilou

It's implicit at my new version above
You have caltulated before the good rectangle for have the good result

jeff hammond

@unknownuser said:

It was made step 3

[ie--- the board is a set thickness.. it will always be the same.. the part you're measuring will constantly change depending on the gap and height (angle)..]

pbacot

I just draw a 2x4 or whatever and rotate it then cut with two uprights...? I did that today in a trellis design.

thomthom

Does it has to be drawn correct in the first place?
I was thinking, drawing the profile of the board in the correct size, extrude, rotate it, taper off the ends. - too many steps?

jeff hammond

@unknownuser said:

It's implicit at my new version above
You have caltulated before the good rectangle for have the good result

ok.. i'll try to switch up the way i'm presenting the problem..

draw this:

(notice which way the 5 units are being measured.. if i measure 5 in the place you're suggesting, my board will no longer have a width of 5.. it will be too skinny)

thomthom

This is an elaborate plugin request - right?

pbacot

Well if you had a true arc or circle you could find your exact intersection points. But there are no true circles in SU.

jeff hammond

@thomthom said:

Does it has to be drawn correct in the first place?
I was thinking, drawing the profile of the board in the correct size, extrude, rotate it, taper off the ends. - too many steps?

take as many steps as needed.. but for you, once you recognize the issue, you'll probably immediate think ruby as a means of solving it.. the way i do it is with a dynamic component.. there's a brute force method to accomplish it within sketchup itself but i'm wondering if i happen to be missing a method.. no solutions given so far will accomplish it..

[EDIT.. haha.. re:your post while i was typing this one ]
but no.. i didn't set out for it to be.. it's a pretty cool little challenge because of how simple it seems.. hopefully a plugin doesn't jump in too soon and spoil all the fun

jeff hammond

@pbacot said:

Well if you had a true arc or circle you could find your exact intersection points. But there are no true circles in SU.

right, that's the brute force method i mentioned above.. make a little arc with a thousand segments and it will work..

thomthom

@unknownuser said:

@pbacot said:

Well if you had a true arc or circle you could find your exact intersection points. But there are no true circles in SU.

right, that's the brute force method i mentioned above.. make a little arc with a thousand segments and it will work..

That sounds dangerous - most likely you'll get some minor accuracy issue somewhere ~0.00001 of whatever - something that eventually cascades into a nightmare! (thinking of all them imported AutoCAD plans I've had... x_X )

jeff hammond

@thomthom said:

@unknownuser said:

@pbacot said:

Well if you had a true arc or circle you could find your exact intersection points. But there are no true circles in SU.

right, that's the brute force method i mentioned above.. make a little arc with a thousand segments and it will work..

That sounds dangerous - most likely you'll get some minor accuracy issue somewhere ~0.00001 of whatever - something that eventually cascades into a nightmare! (thinking of all them imported AutoCAD plans I've had... x_X )

yes.. that can happen and why i eventually went with a dynamic component instead (maths)

for getting an accurate enough dimension for a framer to cut.. it's ok.. but to have something like that in a drawing where you may be inferencing etc for future parts of the drawing.. i agree, it's a no-no.. you can throw off everything else down the line..