Re: [brlcad-devel] GSOC'15: NURBS Editing support

2015-04-03 Thread Christopher Sean Morrison
On Apr 3, 2015, at 10:38 AM, Nihar Mehta wrote: > I have started work on distortion of Cobb sphere. However, I am facing > difficulties: > 1. What is the command to make the shapes described in proc-db folder? The name of the source file is also the name of the command. As they are develope

[brlcad-devel] GSOC'15: NURBS Editing support

2015-04-03 Thread Nihar Mehta
I have started work on distortion of Cobb sphere. However, I am facing difficulties: 1. What is the command to make the shapes described in proc-db folder? 2. I observed that the changes (editing support) is general (applicable to all objects) and included in the rt folder, so if I am picking only

Re: [brlcad-devel] GSOC'15: NURBS Editing Support

2015-03-25 Thread Clifford Yapp
On Mon, Mar 23, 2015 at 1:56 PM, Christopher Sean Morrison wrote: > > We need very basic editing support. Grab a corner of a box and move it. > Grab an edge > and move it. Grab some point on a surface and move it. Do any of those > without > destroying the integrity and continuity of the nei

Re: [brlcad-devel] GSOC'15: NURBS Editing Support

2015-03-23 Thread Christopher Sean Morrison
Nihar, this is a lot of highly involved technical questions and not really much time to get into detail. I suggest you just research as much as possible to understand approaches and make a proposal to the best of your understanding. That said, I’m not sure any of this is answerable without kn

[brlcad-devel] GSOC'15: NURBS Editing Support

2015-03-23 Thread Nihar Mehta
1.Can we apply the following algo for trimming surfaces? In the case of NURBS a trimming operation does not change the domain of a patch, but rather identifies a region within the domain whose evaluation is skipped, creating the associated “hole.” I will use Combined loop subdivision for Surface Re

Re: [brlcad-devel] GSOC'15:NURBS EDITING SUPPORT

2015-03-20 Thread Christopher Sean Morrison
On Mar 21, 2015, at 1:39 AM, Nihar Mehta wrote: > I have following doubts in this subproject: > 1. Do we have support for converting trimmed to untrimmed curves with > T-splines? > http://www.tsplines.com/technology/WTN.pdf We do not. That is a patented technique, so we cannot even consider

[brlcad-devel] GSOC'15:NURBS EDITING SUPPORT

2015-03-20 Thread Nihar Mehta
I have following doubts in this subproject: 1. Do we have support for converting trimmed to untrimmed curves with T-splines? http://www.tsplines.com/technology/WTN.pdf 2. Can we use Dual loop algorithm for smoothening curves? http://www.scientific.net/AMR.97-101.2477 3. Does detaching curve mean