[x3d-public] Extrusions, take 3, Replacement with Cylinders, Cobweb needs to be updated in X3D Edit.
Leonard Daly
Leonard.Daly at realism.com
Thu Feb 18 19:58:37 PST 2016
On 2/14/2016 9:03 PM, John Carlson wrote:
> 1. I am beginning to see the wisdom of this approach. What happens
> when one’s points get large with scripts? I took a slightly different
> approach and got good results. Note that I had to double instance the
> points to get the spheres to appear at all.
> http://coderextreme.net/arc.x3d
>
>
> I am not sure why? Anyone?
>
>
> 2. Don, Cobweb needs to be updated in X3D-Edit.
>
>
> 3. Leonard, can you render this in X3DOM? I’m curious to know how to
> do this with Inline’s and not Proto’s.
Simple answer is No. The PROTOs use Scripts. There are no scripts in X3DOM.
That does not mean it cannot be done. You have 4 sphere's randomly
moving in a region. You have connected three of them to a "central" hub.
The most difficult part is maintaining the connection between the
spheres. Using a transform on a cylinder is really messy because you
need to scale, rotate, and translation the center of each cylinder for
each animation frame.
A better way to go might be to modify the existing IndexedLineSet node
to produce a line with a width. Then you are just transforming the end
points of a 2-point line. Note that if you arrange the Transforms
properly the "hub" sphere is always at the origin of the hierarchy that
contains the 4 spheres and cylinders.
<all of the old messages clipped out...>
--
*Leonard Daly*
3D Systems & Cloud Consultant
X3D Co-Chair on Sabbatical
LA ACM SIGGRAPH Chair
President, Daly Realism - /Creating the Future/
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