Hi
(Cross-posted to the Pharo mailing list because that's what I'm using primarily but I'm also interested in packages that work in Squeak) I'm working with some simple math equations and am looking for a nicer way to display them. Is there any existing work that I might be able to re-use/build upon? For instance, given this equation, (1+2/3)*4 I would like to see it displayed like the Equation Editor in Microsoft Word or the equations in a Mathematica notebook. See attached screenshots: I'm not looking for anything fancy. Something simple to get me started would be helpful as well. I looked briefly at Dr. Geo but I don't think it supports displaying equations in that manner. Thanks! -- Nick |
I use Lyx on top of LaTeX, then export to image which can be imported into Squeak. All very manual. I recall seeing where someone was piping through LaTeX to do the job on the fly. I should think that would produce a print file easily, a bit harder to make a little illustration for on-screen, interactive use. Gary Dunn On Sep 11, 2011 4:43 AM, "Nick Chen" <[hidden email]> wrote: |
See http://www.squeaksource.com/LatexMorph.
LatextMorph is a typesetter engine that converts LaTeX snippets into Images. It can be made to work in real time by scripting a Text object to modify its input field. It was written primarily for middle school students using Linux desktops. If you are using it on Wintel or Mac, it may need additional work in terms of writing the glue code for MicTeX. Subbu On Sunday 11 Sep 2011 9:57:33 PM Gary Dunn wrote: > I use Lyx on top of LaTeX, then export to image which can be imported into > Squeak. All very manual. I recall seeing where someone was piping through > LaTeX to do the job on the fly. I should think that would produce a print > file easily, a bit harder to make a little illustration for on-screen, > interactive use. > > Gary Dunn > Open Slate Project > http://openslate.org > > On Sep 11, 2011 4:43 AM, "Nick Chen" <[hidden email]> wrote: > > Hi > > (Cross-posted to the > http://forum.world.st/Simple-math-editor-typesetter-td3805250.html Pharo > mailing list because that's what I'm using primarily > but I'm also interested in packages that work in Squeak) > > I'm working with some simple math equations and am looking for a nicer way > to > display them. Is there any existing work that I might be able to > re-use/build > upon? > > For instance, given this equation, (1+2/3)*4 I would like to see it > displayed > like the Equation Editor in Microsoft Word or the equations in a > Mathematica notebook. See attached screenshots: > > http://forum.world.st/file/n3805256/word.png > > http://forum.world.st/file/n3805256/mathematica.png > > I'm not looking for anything fancy. Something simple to get me started > would be helpful as well. > > I looked briefly at Dr. Geo but I don't think it supports displaying > equations in that > manner. > > Thanks! > > -- > Nick > > -- > View this message in context: > http://forum.world.st/Simple-math-editor-typesetter-tp3805256p3805256.html > Sent from the Squeak - Dev mailing list archive at Nabble.com. |
In reply to this post by Gary Dunn-2
I add a commercial software where I could do this.
The idea is to have a tree representing the expression (1+2/3)*4 Assuming your infix expression used usual mathematical precedence, you have a tree MultiplyExpression( AddExpression( 1 , DivideExpression( 2 , 3 ) ) , 4) Then you can have a printer of the tree using the visitor pattern. This way, you can have code generation output (C, Matlab etc...) of your mathematical expression, LaTeX being just one special case, and Morph composition just another one. As long as you do not deal with page layout, the composition is quite straight forward... MorphComposer>>visitDivideExpression: aDivideExpression numeratorMorph := aDivideExpression numerator iterateFromVisitor: self. denominatorMorph := aDivideExpression denominator iterateFromVisitor: self. fractionBar := (numeratorMorph width max: denominatorMorph width) + self extraWidth. some more code to create a composite morph with correct alignment... Nicolas 2011/9/11 Gary Dunn <[hidden email]>: > I use Lyx on top of LaTeX, then export to image which can be imported into > Squeak. All very manual. I recall seeing where someone was piping through > LaTeX to do the job on the fly. I should think that would produce a print > file easily, a bit harder to make a little illustration for on-screen, > interactive use. > > Gary Dunn > Open Slate Project > http://openslate.org > > On Sep 11, 2011 4:43 AM, "Nick Chen" <[hidden email]> wrote: > > Hi > > (Cross-posted to the > http://forum.world.st/Simple-math-editor-typesetter-td3805250.html Pharo > mailing list because that's what I'm using primarily > but I'm also interested in packages that work in Squeak) > > I'm working with some simple math equations and am looking for a nicer way > to > display them. Is there any existing work that I might be able to > re-use/build > upon? > > For instance, given this equation, (1+2/3)*4 I would like to see it > displayed > like the Equation Editor in Microsoft Word or the equations in a Mathematica > notebook. See attached screenshots: > > http://forum.world.st/file/n3805256/word.png > > http://forum.world.st/file/n3805256/mathematica.png > > I'm not looking for anything fancy. Something simple to get me started would > be helpful as well. > > I looked briefly at Dr. Geo but I don't think it supports displaying > equations in that > manner. > > Thanks! > > -- > Nick > > -- > View this message in context: > http://forum.world.st/Simple-math-editor-typesetter-tp3805256p3805256.html > Sent from the Squeak - Dev mailing list archive at Nabble.com. > > > > > |
2011/9/11 Nicolas Cellier <[hidden email]>:
> I add a commercial software where I could do this. s/I add/I had/ > The idea is to have a tree representing the expression > > (1+2/3)*4 > > Assuming your infix expression used usual mathematical precedence, > you have a tree MultiplyExpression( AddExpression( 1 , > DivideExpression( 2 , 3 ) ) , 4) > > Then you can have a printer of the tree using the visitor pattern. > This way, you can have code generation output (C, Matlab etc...) of > your mathematical expression, LaTeX being just one special case, and > Morph composition just another one. > As long as you do not deal with page layout, the composition is quite > straight forward... > > MorphComposer>>visitDivideExpression: aDivideExpression > numeratorMorph := aDivideExpression numerator iterateFromVisitor: self. > denominatorMorph := aDivideExpression denominator iterateFromVisitor: self. > fractionBar := (numeratorMorph width max: denominatorMorph width) > + self extraWidth. > some more code to create a composite morph with correct alignment... > > Nicolas > > 2011/9/11 Gary Dunn <[hidden email]>: >> I use Lyx on top of LaTeX, then export to image which can be imported into >> Squeak. All very manual. I recall seeing where someone was piping through >> LaTeX to do the job on the fly. I should think that would produce a print >> file easily, a bit harder to make a little illustration for on-screen, >> interactive use. >> >> Gary Dunn >> Open Slate Project >> http://openslate.org >> >> On Sep 11, 2011 4:43 AM, "Nick Chen" <[hidden email]> wrote: >> >> Hi >> >> (Cross-posted to the >> http://forum.world.st/Simple-math-editor-typesetter-td3805250.html Pharo >> mailing list because that's what I'm using primarily >> but I'm also interested in packages that work in Squeak) >> >> I'm working with some simple math equations and am looking for a nicer way >> to >> display them. Is there any existing work that I might be able to >> re-use/build >> upon? >> >> For instance, given this equation, (1+2/3)*4 I would like to see it >> displayed >> like the Equation Editor in Microsoft Word or the equations in a Mathematica >> notebook. See attached screenshots: >> >> http://forum.world.st/file/n3805256/word.png >> >> http://forum.world.st/file/n3805256/mathematica.png >> >> I'm not looking for anything fancy. Something simple to get me started would >> be helpful as well. >> >> I looked briefly at Dr. Geo but I don't think it supports displaying >> equations in that >> manner. >> >> Thanks! >> >> -- >> Nick >> >> -- >> View this message in context: >> http://forum.world.st/Simple-math-editor-typesetter-tp3805256p3805256.html >> Sent from the Squeak - Dev mailing list archive at Nabble.com. >> >> >> >> >> > |
Yes, I would like it to display using Morphs so that I can have more options for
interactivity e.g. editing and drag-and-drop. I already have a parser implemented; this whole thing is part of a bigger project and I'm working on the display part currently. The Visitor pattern would be used to do the projection into Morphic. You mentioned "MorphComposer". Was that part of your original software? Would you happen to know if there are existing Morphic objects that I could re-use or would I need to create my own from scratch. I looked at the tiles in Scratch/Etoys and I would like something more "pretty". Thanks! -- Nick
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