GSoC 2014: Introduction

Hello everyone,

I am Priyanka Kapoor pursuing B.Tech IT from Guru Nanak Dev Engg. College, Ludhiana. I have been working on LibreCAD from past one year. I also try my hands changing the source code of LibreCAD to add new shapes like a flower of circles, synchronizing the text boxes of dimension dialog box. I explained the work on my blog also. I am keen interested in C++ and Qt. I have good knowledge of making / designing User interface in Qt.

As for my project, I am interested in "SmartSnape" project. This project needs a logic that will convert the units entered by user to unit used in LibreCAD. I am writing my proposal and I will post by today evening.

I heartily congratulate LibreCAD for being part of GSoC 2014. Looking forward for your guidance and support in project.

Regards,

Priyanka
(Blog)

Hi priyanka,

jasleen once reported "flower" entities, very interesting addons.

As we are talking about creating a new LibreCAD engine now. I'm wondering whether your new architecture is designed with a new engine in mind.

For snapping, make sure we have smart constraints which are missing in LibreCAD. For example, snap to perpendicular, etc.

Please talk to us more on IRC for new ideas.

Thanks,

dxli

priyanka wrote

Hello everyone,

I am Priyanka Kapoor pursuing B.Tech IT from Guru Nanak Dev Engg. College, Ludhiana. I have been working on LibreCAD from past one year. I also try my hands changing the source code of LibreCAD to add new shapes like a flower of circles, synchronizing the text boxes of dimension dialog box. I explained the work on my blog also. I am keen interested in C++ and Qt. I have good knowledge of making / designing User interface in Qt.

As for my project, I am interested in "SmartSnape" project. This project needs a logic that will convert the units entered by user to unit used in LibreCAD. I am writing my proposal and I will post by today evening.

I heartily congratulate LibreCAD for being part of GSoC 2014. Looking forward for your guidance and support in project.

Regards,

Priyanka
(Blog)

There is a confusion going on. Project Idea list was showing two projects with different names but same description.
I was proposing for Supporting Multiple Measuring units in LibreCAD. I thought you gave SmartSnape as short name to this project. So I wrote there SmartSnape.
Supporting Multiple Measuring units will be  sort of library file, which can be easily included in new engine.

Am I on right track now? Please do respond/point out if I am wrong at some place regarding this project.

Hey Priyanka,

this morning I got notified that the description was changed so I changed it to the right description back again.

I think you want to propose on the project : Support for multiple units upon data entry.

let me know if that was right,
Have you been on our IRC channel? #librecad@freenode.org

Ries

On Fri, Mar 21, 2014 at 12:20 AM, R. van Twisk [via LibreCAD]
<[hidden email]> wrote:
> Hey Priyanka,
>
> this morning I got notified that the description was changed so I changed it
> to the right description back again.
>
> I think you want to propose on the project : Support for multiple units upon
> data entry.

Yes I want to propose on this project.

> let me know if that was right,
> Have you been on our IRC channel? #[hidden email]

Yes, with name priyanka. I used to ask questions on IRC one year back
with this name. I will be there from
now onwards.

> Ries
>
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> To unsubscribe from GSoC 2014: Introduction, click here.
> NAML



--
Priyanka Kapoor
priyankacool10.wordpress.com
Linux User Group, Ludhiana

muparser actually supports units in input:

http://muparser.beltoforion.de/mup_features.html

I feel you may consider expanding the muparser usage/features in LC. Are there any good alternative for muparser?

Maybe not so relevant? can we enable python binding, either use python binding for math or command line interface.

Dli,

On Fri, Mar 21, 2014 at 5:24 AM, dxli [via LibreCAD]
<[hidden email]> wrote:
> muparser actually supports units in input:
>
> http://muparser.beltoforion.de/mup_features.html
>
> I feel you may consider expanding the muparser usage/features in LC.

dxli, what if we pre-parse the expression  before passing it to muparser?
We just need a pre-parser, all the rest will go same as doing currently.

>Are there any good alternative for muparser?
>
> Maybe not so relevant? can we enable python binding, either use python
> binding for math or command line interface.

I don't think that we need much of mathematical calculations for this
project. muparser is more than enough. It supports strings, and we can
do pre-parse the string easily before passing to muparser.

We just need to design a grammer for user input and parsing it to unit
used in LibreCAD.
What are your views in this?



--
Priyanka Kapoor
priyankacool10.wordpress.com
Linux User Group, Ludhiana

Please review my proposal.
http://brlcad.org/wiki/User:Priyanka_kapoor



--
Priyanka Kapoor
priyankacool10.wordpress.com
Linux User Group, Ludhiana

Jasleen never shared "flower" source code, do you mind sending a pull request to my github master branch:

github.com:dxli/LibreCAD.git

Thanks!

On Fri, Apr 4, 2014 at 4:42 PM, dxli [via LibreCAD]
<[hidden email]> wrote:
> Jasleen never shared "flower" source code, do you mind sending a pull
> request to my github master branch:
>
> github.com:dxli/LibreCAD.git

dxli, I just tweaked the code of circle to make a flower pattern, and
it is not a new feature, just a couple of lines.
You can see that here:
http://priyankacool10.wordpress.com/2013/03/31/changing-functionality-of-circle-in-librecad/



--
Priyanka Kapoor
priyankacool10.wordpress.com
Linux User Group, Ludhiana

@dxli,
In continuation to yesterday's discussion on IRC, I implemented that
flower with the icon on Toolbar.
Here are the screenshots.

http://www.picpaste.com/flo1-RRsqe7uQ.png
http://www.picpaste.com/flo2-jq0II9Ma.png







--
Priyanka Kapoor
priyankacool10.wordpress.com
Linux User Group, Ludhiana

modified a little bit

petal calculation needs to be updated as well:

void RS_ActionDrawCircle::trigger() {
    RS_PreviewActionInterface::trigger();
    deletePreview();

    //    RS_Circle* circle = new RS_Circle(container, data);
    QList<RS_AtomicEntity*> lists;
    RS_Circle* flower= new RS_Circle(container, data); // circle in center
    lists<<flower;
    //        flower->setLayerToActive();
    //        flower->setPenToActive();
    //        container->addEntity(flower);
    static int petal=3; //remember previous # petals
    int i = petal; // ASK THE USER (integer)
    double offset=2.*data.radius*sin(M_PI/petal);
    while (i--)
    {
        flower = new RS_Circle(*flower);
        // x + 2 2 pi/t = pi/2 + pi/t , // first offset direction is Pi/2 + Pi/petal
        // x= pi/t( -4 + t/2 + 1), (2 + 2i)
        // (t/2 -3 + (t -i)*2) p/t
        if(i==petal-1)
            flower->move(RS_Vector(data.radius, 0.));
        else
            flower->move(RS_Vector(((petal -i)*2 + 0.5*petal - 3.)*M_PI/petal)*offset);
        lists<<flower;
    }
    for(RS_AtomicEntity* c: lists){
        c->setLayerToActive();
        c->setPenToActive();
        container->addEntity(c);
    }

    if (document!=NULL) {
        document->startUndoCycle();
        for(RS_AtomicEntity* c: lists){
            document->addUndoable(c);
        }
        document->endUndoCycle();
    }

    // upd. undo list:

    graphicView->redraw(RS2::RedrawDrawing);
    graphicView->moveRelativeZero(data.center);

    setStatus(SetCenter);
    reset();

    //increase # of petals for the subsequent session
    petal++;
    if(petal>=20) petal=3;

//    RS_DEBUG->print("RS_ActionDrawCircle::trigger(): circle added: %d",
//                    circle->getId());
}

Here is the pull request:
https://github.com/dxli/LibreCAD/pull/10

On Mon, Apr 7, 2014 at 8:32 AM, Priyanka Kapoor
<[hidden email]> wrote:
> dxli, its working great :) Your mathematics is fantastic.
> I can send you pull request now.



--
Priyanka Kapoor
priyankacool10.wordpress.com
Linux User Group, Ludhiana