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<div class="moz-cite-prefix">John,<br>
<br>
In Maya and Blender extrusions are used all of the time in
modeling. Once the extrusion is created, it is immediately
converted to a quad mesh. Animations are done on the quad mesh.
The quad mesh is what is saved and exported.<br>
<br>
Leonard Daly<br>
<br>
<br>
<br>
<br>
</div>
<blockquote
cite="mid:1F6A6501-8C7E-4F6C-8007-BD0437284EA2@gmail.com"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
Maybe just show an example of an IndexedFaceSet which is an
extrusion of a circle with 3 spline points, with the “bend”
animated from 90 to 180 degrees.
<div class=""><br class="">
<div class="">It’s okay to use Blender or Maya, I’d just like to
see what the results look like.</div>
<div class=""><br class="">
</div>
<div class="">John</div>
<div class="">
<div>
<blockquote type="cite" class="">
<div class="">On Jan 26, 2016, at 8:01 PM, John Carlson
<<a moz-do-not-send="true"
href="mailto:yottzumm@gmail.com" class="">yottzumm@gmail.com</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252" class="">
<div style="word-wrap: break-word; -webkit-nbsp-mode:
space; -webkit-line-break: after-white-space;"
class="">So how do you propose to animate
IndexedFaceSets in a declarative or VRMLscript or
JavaScript manner if they are Extrusions? Can we see
an example? If the developer has to do it, can we
help them?
<div class=""><br class="">
</div>
<div class="">John<br class="">
<div class="">
<blockquote type="cite" class="">
<div class="">On Jan 26, 2016, at 6:58 PM,
Leonard Daly <<a moz-do-not-send="true"
href="mailto:Leonard.Daly@realism.com"
class="">Leonard.Daly@realism.com</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div class="moz-cite-prefix"
style="font-family: Helvetica; font-size:
12px; font-style: normal; font-variant:
normal; font-weight: normal; letter-spacing:
normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none;
white-space: normal; widows: auto;
word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);">On
1/26/2016 3:21 PM, John Carlson wrote:<br
class="">
</div>
<blockquote
cite="mid:DB8D08AE-E79F-4AF0-9F94-1E3A31C9153E@gmail.com"
type="cite" style="font-family: Helvetica;
font-size: 12px; font-style: normal;
font-variant: normal; font-weight: normal;
letter-spacing: normal; orphans: auto;
text-align: start; text-indent: 0px;
text-transform: none; white-space: normal;
widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);"
class="">Leonard, I think you forget that
Extrusion splines etc. can be animated. If
Maya can export an Extrusion animation to
X3D V4.0 and your new elements can handle
animation of it, I think we are fine.</blockquote>
<br style="font-family: Helvetica; font-size:
12px; font-style: normal; font-variant:
normal; font-weight: normal; letter-spacing:
normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none;
white-space: normal; widows: auto;
word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);"
class="">
<span style="font-family: Helvetica;
font-size: 12px; font-style: normal;
font-variant: normal; font-weight: normal;
letter-spacing: normal; orphans: auto;
text-align: start; text-indent: 0px;
text-transform: none; white-space: normal;
widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); float:
none; display: inline !important;" class="">In
Maya and Blender, extrusions are converted
to IndexedFaceSets. These can be animated
through the usual mechanisms in those
applications. The results are typically
stored in a FBX file. Unfortunately, the FBX
format is not open and not too conducive to
importing in a browser. Autodesk provides a
C++ and Python API for accessing the file.</span><br
style="font-family: Helvetica; font-size:
12px; font-style: normal; font-variant:
normal; font-weight: normal; letter-spacing:
normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none;
white-space: normal; widows: auto;
word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);"
class="">
<br style="font-family: Helvetica; font-size:
12px; font-style: normal; font-variant:
normal; font-weight: normal; letter-spacing:
normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none;
white-space: normal; widows: auto;
word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);"
class="">
<span style="font-family: Helvetica;
font-size: 12px; font-style: normal;
font-variant: normal; font-weight: normal;
letter-spacing: normal; orphans: auto;
text-align: start; text-indent: 0px;
text-transform: none; white-space: normal;
widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); float:
none; display: inline !important;" class="">Extrusions
are just a convenience node for creating a
constrained IndexedFaceSet. I am working on
exactly how X3D fits in the process chain
from modeling tools to display. The goal is
that X3D is an declarative archivable format
that has a browser-based run time. The goal
is to not reduce the display capability of
X3D in that chain; however, not all of the
functionality of X3D V3.3 is necessary to
remain in the node definitions to make that
happen.<span class="Apple-converted-space"> </span></span><br
style="font-family: Helvetica; font-size:
12px; font-style: normal; font-variant:
normal; font-weight: normal; letter-spacing:
normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none;
white-space: normal; widows: auto;
word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);"
class="">
<br style="font-family: Helvetica; font-size:
12px; font-style: normal; font-variant:
normal; font-weight: normal; letter-spacing:
normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none;
white-space: normal; widows: auto;
word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);"
class="">
<span style="font-family: Helvetica;
font-size: 12px; font-style: normal;
font-variant: normal; font-weight: normal;
letter-spacing: normal; orphans: auto;
text-align: start; text-indent: 0px;
text-transform: none; white-space: normal;
widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); float:
none; display: inline !important;" class="">Animation
of the spline and cross-sections of an
extrusion is much easier for the developer,
but puts a much greater load on the run-time
as it needs to re-triangulate the result on
each animation.</span><br
style="font-family: Helvetica; font-size:
12px; font-style: normal; font-variant:
normal; font-weight: normal; letter-spacing:
normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none;
white-space: normal; widows: auto;
word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);"
class="">
<br style="font-family: Helvetica; font-size:
12px; font-style: normal; font-variant:
normal; font-weight: normal; letter-spacing:
normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none;
white-space: normal; widows: auto;
word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);"
class="">
<br style="font-family: Helvetica; font-size:
12px; font-style: normal; font-variant:
normal; font-weight: normal; letter-spacing:
normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none;
white-space: normal; widows: auto;
word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);"
class="">
<span style="font-family: Helvetica;
font-size: 12px; font-style: normal;
font-variant: normal; font-weight: normal;
letter-spacing: normal; orphans: auto;
text-align: start; text-indent: 0px;
text-transform: none; white-space: normal;
widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); float:
none; display: inline !important;" class="">Leonard
Daly</span><br style="font-family:
Helvetica; font-size: 12px; font-style:
normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; orphans:
auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal;
widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);"
class="">
<br style="font-family: Helvetica; font-size:
12px; font-style: normal; font-variant:
normal; font-weight: normal; letter-spacing:
normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none;
white-space: normal; widows: auto;
word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);"
class="">
<br style="font-family: Helvetica; font-size:
12px; font-style: normal; font-variant:
normal; font-weight: normal; letter-spacing:
normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none;
white-space: normal; widows: auto;
word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);"
class="">
<br style="font-family: Helvetica; font-size:
12px; font-style: normal; font-variant:
normal; font-weight: normal; letter-spacing:
normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none;
white-space: normal; widows: auto;
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class="">
<br style="font-family: Helvetica; font-size:
12px; font-style: normal; font-variant:
normal; font-weight: normal; letter-spacing:
normal; orphans: auto; text-align: start;
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white-space: normal; widows: auto;
word-spacing: 0px;
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background-color: rgb(255, 255, 255);"
class="">
<br style="font-family: Helvetica; font-size:
12px; font-style: normal; font-variant:
normal; font-weight: normal; letter-spacing:
normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none;
white-space: normal; widows: auto;
word-spacing: 0px;
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background-color: rgb(255, 255, 255);"
class="">
<blockquote
cite="mid:DB8D08AE-E79F-4AF0-9F94-1E3A31C9153E@gmail.com"
type="cite" style="font-family: Helvetica;
font-size: 12px; font-style: normal;
font-variant: normal; font-weight: normal;
letter-spacing: normal; orphans: auto;
text-align: start; text-indent: 0px;
text-transform: none; white-space: normal;
widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);"
class="">
<div class=""><br class="">
</div>
<div class="">John<br class="">
<div class="">
<blockquote type="cite" class="">
<div class="">On Jan 26, 2016, at 1:47
PM, Leonard Daly <<a
moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:Leonard.Daly@realism.com"><a class="moz-txt-link-abbreviated" href="mailto:Leonard.Daly@realism.com">Leonard.Daly@realism.com</a></a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div class="moz-cite-prefix"
style="font-family: Helvetica;
font-size: 12px; font-style:
normal; font-variant: normal;
font-weight: normal;
letter-spacing: normal; orphans:
auto; text-align: start;
text-indent: 0px; text-transform:
none; white-space: normal; widows:
auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255,
255);">I would like to ask the
question very differently. My
question is not to ignore the
importance of getting the
definition correct for X3D <=
V3.3.<br class="">
<br class="">
<br class="">
Most (>95%) 3D modeling is done
with a tool. In non-CAD
environment, the tools is almost
certainly Maya or Blender. Both of
those tools have extrusions built
in to their interface. I imagine
CAD tools are similar. With so
many tools providing graphical
extrusion editors, and some of the
tools being open-source (at least
Blender);<br class="">
<br class="">
Do we need an extrusion node in V4
to support content developed for
V4+?<span
class="Apple-converted-space"> </span><br
class="">
<br class="">
<br class="">
Leonard Daly<br class="">
<br class="">
<br class="">
<br class="">
On 1/26/2016 7:15 AM, Alekseyev,
Vsevolod (NIH/NIAID) [E] wrote:<br
class="">
</div>
<blockquote
cite="mid:CC1C444FB9E32940BA18B288E9CAB83C213F30FC@msgb05.nih.gov"
type="cite" class=""
style="font-family: Helvetica;
font-size: 12px; font-style:
normal; font-variant: normal;
font-weight: normal;
letter-spacing: normal; orphans:
auto; text-align: start;
text-indent: 0px; text-transform:
none; white-space: normal; widows:
auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255,
255);">
<div class="" style="direction:
ltr; font-family: Tahoma;
font-size: 10pt;">Hi X3D
community,
<div class=""><br class="">
</div>
<div class="">I've tried and
failed twice to explain the
problems with the definition
of the Extrusion node. So
here's a tl;dr version:</div>
<div class=""><br class="">
</div>
<div class="">Dear authors of
the X3D standard, please take
a careful look at the standard
and answer me:</div>
<div class=""><br class="">
</div>
<div class="">1) When the spine
goes (0,0,0)-(0,-1,0), what is
the CSP?</div>
<div class="">Note: all answers
but one will render one of the
reference models in the Savage
archive invalid.</div>
<div class=""><br class="">
</div>
<div class="">2) When the spine
goes <span class=""
style="font-size:
13.3333px;">(0,0,0)-(0,1,0)-(0,0,0),
what is the CSP?</span></div>
<div class=""><span class=""
style="font-size:
13.3333px;"><br class="">
</span></div>
<div class=""><span class=""
style="font-size:
13.3333px;">3) When the
spine goes (0,0,0)-(1,1,0)-</span><span
class="" style="font-size:
13.3333px;">(1,1,0)-</span><span
class="" style="font-size:
13.3333px;">(1,1,0)-(2,0,0),
what is the CSP for the
three middle points?</span></div>
</div>
<br class="">
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background-color: rgb(255, 255,
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class="Apple-converted-space"> </span><br
class="">
<font
class="tahoma,arial,helvetica
san serif" color="#333366"><font
class="" size="+1"><b class="">Leonard
Daly</b></font><br class="">
3D Systems & Cloud
Consultant<br class="">
X3D Co-Chair on Sabbatical<br
class="">
LA ACM SIGGRAPH Chair<br
class="">
President, Daly Realism -<span
class="Apple-converted-space"> </span><i
class="">Creating the Future</i></font></div>
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class="">
<br style="font-family: Helvetica; font-size:
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class="">
<div class="moz-signature" style="font-family:
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normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; orphans:
auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal;
widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);">--<span
class="Apple-converted-space"> </span><br
class="">
<font class="tahoma,arial,helvetica san
serif" color="#333366"><font class=""
size="+1"><b class="">Leonard Daly</b></font><br
class="">
3D Systems & Cloud Consultant<br
class="">
X3D Co-Chair on Sabbatical<br class="">
LA ACM SIGGRAPH Chair<br class="">
President, Daly Realism -<span
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<div class="moz-signature">-- <br>
<font class="tahoma,arial,helvetica san serif" color="#333366">
<font size="+1"><b>Leonard Daly</b></font><br>
3D Systems & Cloud Consultant<br>
X3D Co-Chair on Sabbatical<br>
LA ACM SIGGRAPH Chair<br>
President, Daly Realism - <i>Creating the Future</i>
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