Hello John,
Just two questions:
What do you mean by: "I used the bounding sphere center to recenter the
assembly".??
And how did you set the initial size of the bounding sphere?
Thank you.
Bruno
----- Original Message -----
From: Snavely, John A <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, July 27, 2000 11:48 PM
Subject: Re: [JAVA3D] How to determine correct scale factor
> I'm not sure if this applies... but here's what I did.
> Once I loaded up all the object files that made up the assembly and packed
> them into a branchgroup, I used the bounding sphere center to recenter the
> assembly. Then I used the radius of the bounding sphere to scale
everything
> to within a sphere of radius 1. I aimed my view platform at the result and
> it worked!
> Hope this helps!
> ~John
>
> -----Original Message-----
> From: Bruno Sousa Caiado [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, July 26, 2000 2:18 PM
> To: [EMAIL PROTECTED]
> Subject: Re: [JAVA3D] How to determine correct scale factor
>
>
> Hello,
>
> I had the same exact problem when i started working with J3D..
> After loosing alot of time and pacience looking for the j3d API solution
for
> this problem, which i never found, i gave up and come up with the
following
> solution:
>
> When i�m building my objects( QuadArrays, TriangleArrays, etc) i keep
track
> of the maximum value that appears in the object i�m going to draw. For
> example if i�m going to draw a triangle whose vertices are:
> (1,1,1)
> (1,1,1)
> (1000,1000,1000)
>
> i keep track of the value max=1000 and then i use it to scale the
> object...
>
> what u have to do, like i did, is come up with a mathematical formula
to
> apply to the max value to find the correct scale value....
>
> Hope it helps.
> Good luck and good work
>
>
> ----- Original Message -----
> From: Rajamiyer Ravichandran <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Tuesday, July 25, 2000 9:17 PM
> Subject: [JAVA3D] How to determine correct scale factor
>
>
> > Hi All,
> > I have difficulty in setting the correct scale factor
> > for the top level TransformGroup of my scene graph. My
> > 3D models have different sizes and shapes. Knowing the
> > current size of the model, how can determine the scale
> > factor so that, the model will just fit in the
> > canvas3d. I believe there must be some relationship
> > between the model extents and the screen size so that
> > the scale factor can be computed. I am using
> > PARALLEL_PROJECTION.
> >
> >
> >
> > __________________________________________________
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>
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>
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>
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