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<div class="moz-cite-prefix">Hi Utkarsh,<br>
<br>
two ways you can save space and improve the utility of the color
scale editor for pseudo color and volume rendering.<br>
<br>
1) combine the opacity widget and the color scale widget. still
use two curves, but stack the opacity curve ontop of the color
scale. I think it would also be very useful to display a histogram
of the active scalar plotted using the LUT colors in the new
widget. That would replace the rectangular plot of the color scale
that's currently in use.<br>
<br>
2) add a "mirror scale" option. This would flip the colors in the
active LUT. It's quite useful at times to flip the color scale on
certain LUT's depending how the scalar values in a given dataset
are distributed and according to which features in the data you're
trying to visualize. Currently to do this we have to create a new
LUT which adds to the already long list of LUTs. Adding this
feature will let us acheive the desired result while reducing the
number of LUT's in the list.<br>
<br>
Also, with the current color scale widget it's pretty difficult to
interactively manipulate LUT's with many color points (eg when 256
colors are explicitly specified). The control points are too close
together to select and they way it's implemented now you'd need to
move surrounding control points as well. <br>
<br>
3) limit the number of control points used by the widget. The
default max number of control points used by the widget would be
something reasonable like 16 but the user could increase if
desired via a qt spin control. The active control points in the
widget would be evenly spaced across the scale and during
interaction as the user moves the visible control points the
widget would handle linearly re-interpolating the position of the
hidden control points automatically.<br>
<br>
here's what those features would like:<br>
<img src="cid:part1.01080503.08080908@gmail.com" alt=""><br>
<br>
I'd also vote for fixing the bugs:<br>
<br>
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charset=ISO-8859-1">
<a class="moz-txt-link-freetext" href="http://paraview.org/Bug/view.php?id=14094">http://paraview.org/Bug/view.php?id=14094</a><br>
<a class="moz-txt-link-freetext" href="http://paraview.org/Bug/view.php?id=14093">http://paraview.org/Bug/view.php?id=14093</a><br>
<a class="moz-txt-link-freetext" href="http://paraview.org/Bug/view.php?id=14092">http://paraview.org/Bug/view.php?id=14092</a><br>
<a href="http://paraview.org/Bug/view.php?id=14091">http://paraview.org/Bug/view.php?id=14091</a><br>
<br>
admittedly this is a lot of work! but since you asked I thought
now would be the time to bring it up.<br>
<br>
Burlen<br>
<br>
On 07/09/2013 02:51 PM, Utkarsh Ayachit wrote:<br>
</div>
<blockquote
cite="mid:CADHSJjA2sie73-tRZdTi46Zq7WNDWzh9-rEg-BPeTkqpqVzNHQ@mail.gmail.com"
type="cite">
<pre wrap="">Alan (et. al),
As I was working on the fixing log-scaling with color-scale editor, I
figured it might be worthwhile to revisit the UI for the color scale
editor.
Attached is a *partial* mockup. The basic idea is to make the dialog
adopt the style used by the "Properties" panel i.e. become a (possibly
dockable) property sheet with default and advanced properties, that
can be searched, just like the "Properties" panel.
To keep the panel from becoming really long, we could move the
properties for the "Scalar Bar" into a a separate panel. That panel
can be made accessible (besides the usual toolbar/menu) by simply
double-clicking on the scalar bar in the 3D view.
Thoughts?
Utkarsh
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