topic Re: WC object. in Libraries & objects

WC object.

JGoode — Mon, 25 Sep 2017 12:55:44 GMT

I am trying to create a WC object (or a few of them). I cannot figure out the best way to create it. The main issue is the actual bowl of the WC. Is using SEO's the way to go? Due to the curves of the WC it makes it tricky? What is the best way of creating this object? Complete GDL, model using morphs/slabs/etc? Any guidance is appreciated. It doesn't need to be parametric it just needs to look better than average and have a relatively low polycount. Thanks very much.

Re: WC object.

Erwin Edel — Mon, 25 Sep 2017 13:03:46 GMT

You might be able to find some 3D models online that you can convert to morph and then object.

A series of morphs that you merge into one at the end would probably be the easiest way to model. In so far as modelling a complex shape is easy.

Re: WC object.

Piotr Dobrowolski — Mon, 25 Sep 2017 15:38:21 GMT

The seo is the worst decision - performance wise.
The cutpoly etc is far better, but direct modeling is the fastest.
I made a test doing this: https://bimobject.com/en-us/komandor/product/komandorunipanels
The perforated panels when doing the perforation with SEO were unusable...cutpoly better, but the holes made in prism definition were the fastest.

Best Regards,
Piotr

Re: WC object.

JGoode — Fri, 29 Sep 2017 13:35:14 GMT

Piotr wrote:
The seo is the worst decision - performance wise.
The cutpoly etc is far better, but direct modeling is the fastest.
I made a test doing this: https://bimobject.com/en-us/komandor/product/komandorunipanels
The perforated panels when doing the perforation with SEO were unusable...cutpoly better, but the holes made in prism definition were the fastest.

Best Regards,
Piotr

I shall look into working with 'cutpoly'. What is the best way to create curved surfaces, obviously WC's are not square. ?

Re: WC object.

Piotr Dobrowolski — Fri, 29 Sep 2017 17:13:09 GMT

You can save the morph to gdl.
The object will be bigger but performing better than the morph itself.

If You wish to have a small object with nurbs inside to get either slow or fast object in one - the fastest way is to import the nurbs from Rhino. (AC>=20)

Best Regards,
Piotr

Re: WC object.

JGoode — Mon, 02 Oct 2017 13:03:39 GMT

Piotr wrote:
You can save the morph to gdl.
The object will be bigger but performing better than the morph itself.

If You wish to have a small object with nurbs inside to get either slow or fast object in one - the fastest way is to import the nurbs from Rhino. (AC>=20)

Best Regards,
Piotr

Thanks for the help. The main issue I am having is actually modelling the object with accurate curves. The morph tool is clearly the best option for modelling, but it seems as though there is no easy way to create accurate curves that aren't using the revolve tool. The revolve tool doesn't give me what I want so I can't use it.

Re: WC object.

Piotr Dobrowolski — Mon, 02 Oct 2017 21:04:25 GMT

If You are familiar with Rhino - You can do this by using the nubs based on splines - they will go to AC GDL script (AC>=20) with the ability to get the accuracy slider as well.

Best Regards,
Piotr

Re: WC object.

Barry Kelly — Tue, 03 Oct 2017 07:39:11 GMT

It just depends how accurate you want to be.
The attached image is just MULed cones, cylinders and prisms.
If you want something a little more realistic then yes MORPHs are the way to go.
Or go to 3D Warehouse or other model sites and import one of those.
You can even find some in native Archicad GDL objects.

https://specify.caroma.com.au/bim-library-landing/archicad

Or model in other software that is better at doing this type of thing and import them in.

Barry.

Re: WC object.

JGoode — Tue, 03 Oct 2017 09:31:13 GMT

Barry wrote:
It just depends how accurate you want to be.
The attached image is just MULed cones, cylinders and prisms.
If you want something a little more realistic then yes MORPHs are the way to go.
Or go to 3D Warehouse or other model sites and import one of those.
You can even find some in native Archicad GDL objects.

https://specify.caroma.com.au/bim-library-landing/archicad

Or model in other software that is better at doing this type of thing and import them in.

Barry.

This is a basin that i'm currently working on. Same thing applies, I can't work out the correct method of using the morph tool to produce the best results.

Re: WC object.

Barry Kelly — Tue, 03 Oct 2017 09:44:39 GMT

That looks pretty good to me.
The morph tool is not that easy to use for things like this.
If symmetrical I often model half, mirror a copy and combine.

More often than not I find a 3D model, import it and turn it into a morph, clean it up if necessary then save as an object.

The Caroma objects are quite good and in fact they have used a lot of REVOLVE commands from memory.

Barry.

Re: WC object.

JGoode — Tue, 03 Oct 2017 10:01:05 GMT

Barry wrote:
That looks pretty good to me.
The morph tool is not that easy to use for things like this.
If symmetrical I often model half, mirror a copy and combine.

More often than not I find a 3D model, import it and turn it into a morph, clean it up if necessary then save as an object.

The Caroma objects are quite good and in fact they have used a lot of REVOLVE commands from memory.

Barry.

The problem is the polycount, which is over 2000, which is just way to high for something that will be used several times in a project. I don't know if it would be possible to produce similar results with a lower polycount. All of the objects that I need are downloadable as gsm's from the manufacturers website but they are just too high poly.

Re: WC object.

David Maudlin — Tue, 03 Oct 2017 12:11:57 GMT

JGoode wrote:
The problem is the polycount, which is over 2000, which is just way to high for something that will be used several times in a project. I don't know if it would be possible to produce similar results with a lower polycount. All of the objects that I need are downloadable as gsm's from the manufacturers website but they are just too high poly.

If the Object is converted to Morph, use the Morph command Modify Segmentation > Fewer Segments to get to the sweet spot between appearance and polygon count.

David

Re: WC object.

JGoode — Tue, 03 Oct 2017 13:31:57 GMT

David wrote:
JGoode wrote:
The problem is the polycount, which is over 2000, which is just way to high for something that will be used several times in a project. I don't know if it would be possible to produce similar results with a lower polycount. All of the objects that I need are downloadable as gsm's from the manufacturers website but they are just too high poly.
If the Object is converted to Morph, use the Morph command Modify Segmentation > Fewer Segments to get to the sweet spot between appearance and polygon count.

David

Where can I find the Modify Segmentation command?

edit: Found it. What an excellent tip. I never knew it existed. It has made my life much much easier Thanks very much

Re: WC object.

Barry Kelly — Wed, 04 Oct 2017 01:20:20 GMT

Use the modify segmentation with caution.
There will be a point when it will reduce by only a few polygons but will give you an unsatisfactory 3D model.
Always keep a copy of a morph before you edit it - sometimes it is much easier to start again than to try and undo what went wrong.

Don't worry about the 2000 polygon count too much.
Even the basin attached which is one REVOLVE command only with RESOL of 36 has over 1500 polygons.

Barry.

Re: WC object.

Barry Kelly — Wed, 04 Oct 2017 01:27:43 GMT

This is the same bowl converted to a morph.
Same polygon count (1586).
The one on the right was modified with fewer segments.
Only reduced it by 140 polygons but as you can see the 3D is already corrupting.

Barry.

Re: WC object.

JGoode — Wed, 04 Oct 2017 09:14:04 GMT

Barry wrote:
This is the same bowl converted to a morph.
Same polygon count (1586).
The one on the right was modified with fewer segments.
Only reduced it by 140 polygons but as you can see the 3D is already corrupting.

Barry.

I've noticed the drop in quality of object. I have managed to maintain close to the same quality of object with half the amount of polygons. Seems to have worked a treat for me so far.