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Math equations in QTF [message #20251]

Thu, 05 March 2009 10:53

koldo
Messages: 3464
Registered: August 2008

Senior Veteran

Hello all

I would like to show math equations like this in Upp (this one is just an example):
index.php?t=getfile&id=1604&private=0

What could I do?:
- Is it possible to do it using Qtf?
- Would I have to draw it in Painter?

Best regards
Koldo

Attachment: Formula.JPG
(Size: 3.22KB, Downloaded 2686 times)

Best regards
Iñaki

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Re: Math equations in QTF [message #20264 is a reply to message #20251]

Thu, 05 March 2009 19:27

mirek
Messages: 14291
Registered: November 2005

Ultimate Member

koldo wrote on Thu, 05 March 2009 04:53

Hello all

I would like to show math equations like this in Upp (this one is just an example):
index.php?t=getfile&id=1604&private=0

What could I do?:
- Is it possible to do it using Qtf?

No. You could embbed it IMO.

Quote:

- Would I have to draw it in Painter?

Best regards
Koldo

Well, I think the correct would be to create some sort of RichObject for this...

Mirek

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Re: Math equations in QTF [message #20267 is a reply to message #20264]

Fri, 06 March 2009 09:47

koldo
Messages: 3464
Registered: August 2008

Senior Veteran

Hello luzr

From which class should I derive this "math object"?

Best regards
Koldo

Best regards
Iñaki

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Re: Math equations in QTF [message #20282 is a reply to message #20267]

Fri, 06 March 2009 18:34

mirek
Messages: 14291
Registered: November 2005

Ultimate Member

Actually, the process is a little bit different.

You need to find "binary representation" (because, after all, you will need to store such object in QTF...). Then you provide a class that "draws" such binary representation.

I recommend digging around RichText/RichImage.

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Re: Math equations in QTF [message #20283 is a reply to message #20282]

Fri, 06 March 2009 18:37

mirek
Messages: 14291
Registered: November 2005

Ultimate Member

UPDATE:

Tom has already created some simple expressions rendering, it should be in TDraw formula.h / .cpp, and in TCtrlLib.

Mirek

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Re: Math equations in QTF [message #20292 is a reply to message #20283]

Sat, 07 March 2009 00:26

koldo
Messages: 3464
Registered: August 2008

Senior Veteran

Sorry luzr

I have tried to compile TDraw and the best that I have go is this error:
error LNK2019: unresolved external symbol _WinMain@16 referenced in function ___tmainCRTStartup

The more I touch the more errors I get.

To put void AppMain() or GUI_APP_MAIN is just the same.

These files use NAMESPACE_UPP instead of using namespace Upp.

Does it sound anything to you?

Best regards
Koldo

Best regards
Iñaki

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Re: Math equations in QTF [message #20302 is a reply to message #20292]

Sat, 07 March 2009 20:59

mirek
Messages: 14291
Registered: November 2005

Ultimate Member

koldo wrote on Fri, 06 March 2009 18:26

TDraw is not the main package. It is Tom's Draw extension library.

Mirek

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Re: Math equations in QTF [message #20311 is a reply to message #20302]

Mon, 09 March 2009 09:44

koldo
Messages: 3464
Registered: August 2008

Senior Veteran

Sorry again luzr

If TDraw is not the main package, I do not know which is the right one.

If you think that TDraw is obsolete or outside actual Upp standards I can begin something based in QtfDrawing sample, so creating DrawingDraw, inserting it into a QtfRichObject and that in a qtf String.

Berst regards
Koldo

Best regards
Iñaki

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Re: Math equations in QTF [message #20605 is a reply to message #20251]

Thu, 26 March 2009 00:13

koldo
Messages: 3464
Registered: August 2008

Senior Veteran

Hello all

I have prepared a function to draw mathematical equations as this one:

index.php?t=getfile&id=1658&private=0

The function is:

Drawing DrawEquation(String str);

And the viewed sample call is:

Drawing drw = DrawEquation("integral(sqrt(cos(phi_ini^2)) + i^2 + 6, i = 1, 10)*dx = cos((27+x^2)^3.25)/(PI*R_0^2)");

It parses the String passed and builds the equation Drawing object considering upper and lower greek alphabet and easy subscripts and superscripts.

I think that now is not enough big to do a new enter in Bazaar for it. If somebody is interested in it I can include the code.

Now I use it to insert equations in Qtf through QtfRichObject and CreateDrawingObject. If somebody thinks about a better function interface proposals are accepted.

Best regards
Koldo

Attachment: Equation.JPG
(Size: 4.59KB, Downloaded 2376 times)

Best regards
Iñaki

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Re: Math equations in QTF [message #20606 is a reply to message #20605]

Thu, 26 March 2009 07:41

gridem
Messages: 45
Registered: August 2008

Member

koldo wrote on Thu, 26 March 2009 02:13

I think that now is not enough big to do a new enter in Bazaar for it. If somebody is interested in it I can include the code.

Yes, please. I'm very interesting in it. Thank you in advance.

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Re: Math equations in QTF [message #20614 is a reply to message #20606]

Thu, 26 March 2009 23:44

koldo
Messages: 3464
Registered: August 2008

Senior Veteran

Hello gridem

Here I enclose you the package.

Now the calling function is

QtfRichObject QtfEquation(String str)

so that to get it into Qtf is as simple as

GUI_APP_MAIN
{
	String qtfText;

	QtfRichObject qtEq = QtfEquation("integral(sqrt(cos(phi_ini^2)) + i^2 + 6, i = 1, 10)*dx = cos((27+x^2)^3.25)/(PI*R_0^2)");
	
	qtfText << "[R3 This is a formula in QTF:&" << qtEq;

	PromptOK(qtfText);
}

ToDo list:
- Improve appearance mainly in Linux
- Change font size
- (Perhaps) Improve expression parser

Best regards
Koldo

Attachment: QtfEquation.zip
(Size: 3.89KB, Downloaded 722 times)

Best regards
Iñaki

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Re: Math equations in QTF [message #20654 is a reply to message #20614]

Mon, 30 March 2009 11:39

gridem
Messages: 45
Registered: August 2008

Member

koldo wrote on Fri, 27 March 2009 01:44

Hello gridem

Here I enclose you the package.

Best regards
Koldo

Thank you very much! It's useful package for me.

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Re: Math equations in QTF [message #20660 is a reply to message #20251]

Mon, 30 March 2009 15:53

koldo
Messages: 3464
Registered: August 2008

Senior Veteran

Hello gridem

You are welcome. Smile

If you find any problem or any improvement oportunity please let me know.

Best regards
Koldo

Best regards
Iñaki

[Updated on: Mon, 30 March 2009 15:53]

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Re: Math equations in QTF [message #28233 is a reply to message #20660]

Tue, 24 August 2010 15:03

mdelfede
Messages: 1313
Registered: September 2007

Ultimate Contributor

Hi Koldo

I missed that one.... I think it would be a very useful addon to QTF and to UWord !
What about embedding an equation editor in word control ? maybe just an aditstring with the equation preview in real time ?

Ciao

Max

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Re: Math equations in QTF [message #28235 is a reply to message #28233]

Tue, 24 August 2010 15:54

koldo
Messages: 3464
Registered: August 2008

Senior Veteran

Hello Massimo

Now QtfEquation only renders equations (and I have to polish it a little bit Rolling Eyes

).

An equation editor is something completely different...

Best regards
Iñaki

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Re: Math equations in QTF [message #28237 is a reply to message #28235]

Tue, 24 August 2010 16:46

mdelfede
Messages: 1313
Registered: September 2007

Ultimate Contributor

koldo wrote on Tue, 24 August 2010 15:54

Hello Massimo

Now QtfEquation only renders equations (and I have to polish it a little bit Rolling Eyes

).

An equation editor is something completely different...

Hi Koldo,

I usually hated M$ equation editor, he version I used were very fancy to look but quite uncomfortable to use.
I think that something like your is better, it's quite simple to enter en equation as a string and looking its correctness in real time in a control.... IMHO a better way to edit equations.

Max

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Re: Math equations in QTF [message #28239 is a reply to message #28237]

Tue, 24 August 2010 22:13

koldo
Messages: 3464
Registered: August 2008

Senior Veteran

mdelfede wrote on Tue, 24 August 2010 16:46

koldo wrote on Tue, 24 August 2010 15:54

Hello Massimo

Now QtfEquation only renders equations (and I have to polish it a little bit Rolling Eyes

).

An equation editor is something completely different...

Hello Massimo

Your focus is very easy. Just subclassing RichObjectType and that is all.

See sample Reference/RichTextObject. You will like it...

Best regards
Iñaki

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Re: Math equations in QTF [message #28246 is a reply to message #28239]

Wed, 25 August 2010 09:14

mdelfede
Messages: 1313
Registered: September 2007

Ultimate Contributor

Thank you Koldo Smile

I'll test it on these days. Btw, I think if it works as expected I'll add to my app... Is a structural analysis app, with an UWord module too to be able to handle external stuffs, and an equation editor there would be great.

Ciao

Max

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