DeleD Community Edition

Jeroen · Posted: Tue May 10, 2005 7:19 pm Post subject: CSG Proof of Concept

Hi there,

Just wanted to let you all know about the implementation of CSG routines in DeleD. I've written a technical design and created a environment to test it. I'm using a wall-like cube with a cylinder to test the union, intersection and subtraction (carve) operators. All polygons have unique colors to see how they line up. Here are the initial results:

I'm happy to report that this proof of concept is a fact. Smile

There's still lots of things to do, like designing a GUI, removing memoryleaks, getting uv-coords into the whole thing, importing all of it into DeleD itself etc etc. But... this is a good start. Smile

granada · Posted: Tue May 10, 2005 7:56 pm Post subject:

Great news jeroen Very Happy

dave
_________________
AMD Phenom(tm)IIx6 1090t Processor 3.20 GHS
8.00 GB memory
Windows 7 64 bit
Nvida Geforce GTX 580

dirkk · Member Joined: 09 Aug 2004 Posts: 238 Location: Germany

very, very cool!

Jim Coe · Posted: Tue May 10, 2005 8:43 pm Post subject:

Great progress! Is the test object quads and tris or only tris? If quads, i wonder how the difference mesh (and eventual UV mapping) will hold up after conversion to all tris (as required by .mesh and some other formats)?

This is going to be great.
_________________
-jc

Jeroen · Posted: Tue May 10, 2005 8:54 pm Post subject:

The test objects are made of quads. After applying CSG, most quads are split resulting in tris and multisided polygons. I still have to get UV coords into all this meaning that when a polygon gets split, I need to calculate new UV coords for all material-layers as used by the polygon. So lots of work to be done yet... Wink

granada · Posted: Wed May 11, 2005 5:32 am Post subject:

I still think i will use inset & extrude,a lot less polys Wink

(but a great adition to DeleD Very Happy

)

dave
_________________
AMD Phenom(tm)IIx6 1090t Processor 3.20 GHS
8.00 GB memory
Windows 7 64 bit
Nvida Geforce GTX 580

Jeroen · Posted: Wed May 11, 2005 7:08 am Post subject:

granada · Posted: Wed May 11, 2005 8:09 am Post subject:

louis · Member Joined: 25 Mar 2005 Posts: 53

Superb.

Looking forward to it.
cheers

Edwin · Posted: Wed May 11, 2005 6:36 pm Post subject:

It's looking great Jeroen! Very Happy

Jeroen · Posted: Mon May 16, 2005 4:24 pm Post subject:

I've imported my CSG routines into DeleD, implemented a userinterface (right under the Low Polygon commands) and got the whole thing working now. Here's a wall-like cube with 2 cubes and a cylinder subtracted from it + another cube united with it. Smile

I still have to work on a number of things but sofar it's looking promising. Very Happy

Btw, the whole geometry was made in less than a minute. Dave, are you up to a challenge? Wink

granada · Posted: Mon May 16, 2005 6:17 pm Post subject:

dave
_________________
AMD Phenom(tm)IIx6 1090t Processor 3.20 GHS
8.00 GB memory
Windows 7 64 bit
Nvida Geforce GTX 580

dirkk · Member Joined: 09 Aug 2004 Posts: 238 Location: Germany

louis · Member Joined: 25 Mar 2005 Posts: 53

I notice that this is implemented in DeledPRO 1.22 in the screenshot.
Is this going to be a PRO only feature ?

cheers

Jeroen · Posted: Tue May 17, 2005 9:16 am Post subject:

Union = LITE
Union, Subtract, Intersect = PRO Smile