[Papervision3D] Procedurally generated models

[Pete Hobson]

Indeed.  Looking through the ASE import code i think it assumes one  
material per scene at the moment? I was assuming when Collada import  
is more mature, it would handle multiple objects with a material  
each,  and i would take my guide from how this is implemented...  I  
guess doing it manually though I can store my materials in a static  
reference for my class and then ensure each is only added the once -  
not sure how a generic add would handle duplicate materials...

Really looking forward to child objects BTW - would be nice to blast  
those gifs into showers of cubes ;)


On 5 Jan 2007, at 13:50, John Grden wrote:

> dood that's cool!  LOL, what a great idea
>
> as for the materials thought - that's very interesting.  Jake was  
> just telling me how to some shade spoofing with 8 different  
> versions of the xwing map I did.  Based on rotation, one of the 8  
> would be used on the model.
>
> My thought is, I like having the materials for an object stored  
> WITH the object
>
> On 1/5/07, Pete Hobson < pete at 99lives.co.uk> wrote:
> Hi All,
>
> As I dont have any 3d modeling experiance at all, right now im  
> particularly interested  in procedurally generated models such as  
> the PaperPlane example included in the last release.
>
> I've made a little (very un-optimized) class which iterates over a  
> bitmap, and creates colored cubes for each pixel, not useful in  
> itself but cetainly good for understanding how models are  
> represented in P3D.
> demo - http://www.freesome.com/flobs/papervision3Dextrude1.swf
> class - http://www.freesome.com/flobs/Sprite3D.as
>
>  A couple of questions from this experiment...
>
> 1) Materials.  At the moment each pixel is represented by a cube  
> with six materials (varying shades of the pixel color - until we  
> have lights).  I store each of these generated materials, then have  
> a method to push all these materials into the scene.  Question -  
> would it make sense to add a "materials" array to DisplayObject3D  
> which would automatically be added to the scene when the object is  
> added?
>
> 2) Glitches.  At certain rotations the join marks of the individual  
> cubes are visible - i'm guessing this is as im not sharing vertices  
> between adjacent cubes - this is intentional as once we have child- 
> objects i want to be able to manipulate each cube seperatly - is  
> there any way round the glitch other than having a separate shared  
> vertex version for when all cubes are in their default position?
>
> Great stuff everyone - the most fun i've had alone in my office for  
> years ;)
>
>
> Pete
>
>
>
>
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> -- 
> [  JPG  ]
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Pete Hobson
Interaction Developer
pete at 99lives.co.uk
+44 208 123 6974



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