September 2015 - Pharo-users

Re: [Pharo-users] Dr Geo: A point needs to be animated over a preexisting object?

by Hilaire

I should write again, to avoid confusion, there are two ways for programming in Dr. Geo: - Dr. Geo script: with Dr. Geo UI helpers you design a Dr. Geo script class and code its behaviour. Script instance(s) is/are plugged in an existing geometric model. Script arguments are math objects selected from the model. The script can do calculus and return it for other use in the model, or it can change objects attribute (both style or math model). - Dr. Geo Smalltalk sketch are sketch entirely programmed with the dedicated Dr. Geo API. It gives access to unique object and helpers as the plugged point defined with block closure (i.e. the one use on the recursive sequence examples), the plotter, the rulers. Adding new one is in the reach of the user. Hilaire Le 22/09/2015 10:15, Hilaire a Ã©crit : > Hi, > > What is the exact relation between blue and black points? I guess it > depends on the samples. > You can build a script to constraint the black point depending on the > blue point and the direction, then embed this script on your Dr. Geo sketch. > > However, Dr. Geo Smalltalk sketch[1] fit better your needs, for several > reasons: > > 1. you can import your data samples (100 or 1000 samples, up to you), > 2. do the necessary interpolation calculus from these samples > 3. build up the model using Dr. Geo Smalltalk API > 4. animate with the specific #do: and #update: messages from the API > > Check for documentation[2]. French version is more up to date for Dr. > Geo scripting however in your case Dr. Geo Smalltalk sketch is well > documented in the English documentation, thanks to Edward Cherlin > contribution. > > You can watch Dr. Geo TV[3] on the programming topic. I hope to produce > more step by step video tutorials on Dr. Geo programming, as the recent > ones I announced here a few days ago. However the documentation comes > with several examples easy to understand and the whole API is described. > > Hilaire > > [1] http://drgeo.olympe.in/doc/en/drgeo010.html > [2] http://www.drgeo.eu/community/documentation > [3] http://www.drgeo.eu/screenshot-video > > Le 22/09/2015 04:05, Offray Vladimir Luna CÃ¡rdenas a Ã©crit : >> Hi again, >> > -- Dr. Geo http://drgeo.eu http://google.com/+DrgeoEu

Sept. 22, 2015

Re: [Pharo-users] Dr Geo: A point needs to be animated over a preexisting object?

by Hilaire

Hi, What is the exact relation between blue and black points? I guess it depends on the samples. You can build a script to constraint the black point depending on the blue point and the direction, then embed this script on your Dr. Geo sketch. However, Dr. Geo Smalltalk sketch[1] fit better your needs, for several reasons: 1. you can import your data samples (100 or 1000 samples, up to you), 2. do the necessary interpolation calculus from these samples 3. build up the model using Dr. Geo Smalltalk API 4. animate with the specific #do: and #update: messages from the API Check for documentation[2]. French version is more up to date for Dr. Geo scripting however in your case Dr. Geo Smalltalk sketch is well documented in the English documentation, thanks to Edward Cherlin contribution. You can watch Dr. Geo TV[3] on the programming topic. I hope to produce more step by step video tutorials on Dr. Geo programming, as the recent ones I announced here a few days ago. However the documentation comes with several examples easy to understand and the whole API is described. Hilaire [1] http://drgeo.olympe.in/doc/en/drgeo010.html [2] http://www.drgeo.eu/community/documentation [3] http://www.drgeo.eu/screenshot-video Le 22/09/2015 04:05, Offray Vladimir Luna CÃ¡rdenas a Ã©crit : > Hi again, > -- Dr. Geo http://drgeo.eu http://google.com/+DrgeoEu

Sept. 22, 2015

Re: [Pharo-users] A keyboard controlled code editor, how difficult would that be?

by phil＠highoctane.be

One needed feature: drag and drop a protocol on a column... Or a full class. Opens one protocol per column. I found myself trying :-) Phil On Mon, Sep 21, 2015 at 9:20 PM, Tudor Girba <tudor(a)tudorgirba.com> wrote: > Very nice experiment. Please, do keep this up. > > Cheers, > Doru > > On Mon, Sep 21, 2015 at 8:57 PM, Stephan Eggermont <stephan(a)stack.nl> > wrote: > >> When experienced (non-smalltalk) developers come to Pharo, they often >> complain about the (perceived) lack of keyboard control. Spotter has made >> it easy to open new browsers and inspectors, but navigating between all the >> open windows is still mostly done with the mouse. >> >> What would happen if we create an state-full interface, showing code as >> cards, and explicitly switch between navigating and editing? >> >> https://vimeo.com/139960287 >> >> Drag some methods to the code panel, click on it and start editing. >> Esc switches between navigation and editing, when navigating switches >> enter between the collapsed and expanded view of a card. The arrow keys >> select other cards, and using shift a card can be moved. >> >> How much code do we need for that? Well, the prototype fits in 6 columns >> on an UHD screen. >> >> Gofer it >> smalltalkhubUser: 'StephanEggermont' project: 'Documentation'; >> configurationOf: 'NewUI'; >> load. >> >> CodePanel new openInWindowLabeled: 'CodePanel' >> >> What needs fixing: navigating over empty columns. >> >> Stephan >> >> >> > > > -- > www.tudorgirba.com > > "Every thing has its own flow" >

Sept. 22, 2015

Re: [Pharo-users] A keyboard controlled code editor, how difficult would that be?

by phil＠highoctane.be

Hi Stephan, I made it work nicer with the dark theme. [image: Inline image 1] I used a it to do that, and faced a couple issues: - there was a MNU popping up for some selected thing, I implemented the missing thing by copying it from workspace and it went smooth, autocompletion working. - the cards aren't picking up changes done elsewhere, nor are they saving the contents back to the system. Ah, I wanted to use it for a lot of coding already! Peter is right, no more picking around when focusing on one interaction. - I'd love being able to move to the class of the selected card There is a lot of good stuff in this thing, please push forward! I've put the code in: http://www.smalltalkhub.com/#!/~philippeback/HOExtras/packages/NewUI Phil On Mon, Sep 21, 2015 at 8:57 PM, Stephan Eggermont <stephan(a)stack.nl> wrote: > When experienced (non-smalltalk) developers come to Pharo, they often > complain about the (perceived) lack of keyboard control. Spotter has made > it easy to open new browsers and inspectors, but navigating between all the > open windows is still mostly done with the mouse. > > What would happen if we create an state-full interface, showing code as > cards, and explicitly switch between navigating and editing? > > https://vimeo.com/139960287 > > Drag some methods to the code panel, click on it and start editing. > Esc switches between navigation and editing, when navigating switches > enter between the collapsed and expanded view of a card. The arrow keys > select other cards, and using shift a card can be moved. > > How much code do we need for that? Well, the prototype fits in 6 columns > on an UHD screen. > > Gofer it > smalltalkhubUser: 'StephanEggermont' project: 'Documentation'; > configurationOf: 'NewUI'; > load. > > CodePanel new openInWindowLabeled: 'CodePanel' > > What needs fixing: navigating over empty columns. > > Stephan > > > >

Sept. 22, 2015

Re: [Pharo-users] Exploring Pier

by Stephan Eggermont

On 21-09-15 23:44, Jimmie Houchin wrote: > Hello, > > I am interested in learning to use Pier. I browsed the mailing list to > learn about current status and documentation. It seems to be pretty > quiet on the mailing lists. > > There seems to be some activity on Smalltalkhub on Pier3. > > I am interested to see how well supported Pier is (is going to be). > > And if Pier is still active in the community. Is there any current > documentation and where? > > Thanks for any help and opinions regarding Pier and its current and > future situation. We run a few pier sites, one of which uses bootstrap. The configuration of pier needs updating to no longer track the (incompatible) changes in pillar. Apart from that it is very stable. Not all of the add-ons are up to date. We run the sites so, that they monitor a package cache directory and load newer versions of the site automatically, so we can just do a git push to update. Stephan

Sept. 22, 2015

Re: [Pharo-users] Mathex first release is out.

by Julien Delplanque

On 21/09/15 15:40, Damien Cassou wrote: > Julien Delplanque <julien(a)tamere.eu> writes: > >> - Greek letters are defined as globals: Alpha, Beta, ... > > instead of "polluting" the global namespace, you might want to let your > users write: > > #alpha asMathex > Yep but I think the notation is nicer with '(Alpha index: $i) equal: Beta' than with '(#alpha asMathex index: $i) equal: #beta asMathex' and also lighter... But ok there is the cost of polluting globals... >> * Have a preview of the compiled LaTeX code using pdflatex > > you launch pdflatex from Pharo? Does it work on Windows? How do you know > when pdflatex is finished compiling? How do you get the exit status of > pdflatex? > > Pillar wanted the same. But we only managed to let Pillar generate a > bash script that must be executed to launch pdflatex. > Yes I launch pdflatex from Pharo using OSProcess and for now it is very weak, the call to pdflatex block the vm until pdflatex finished its job. The exit status is not checked yet. I will try to enhance it for the next release. The enhancement consist in: - Create the pdf asynchronously (with a little animation in GT-Spotter till the preview is ready). - To check the compilation status, I think I will use a regex to verify the output of pdflatex. Julien

Sept. 22, 2015

Re: [Pharo-users] Exploring Pier

by Damien Cassou

Hi, Jimmie Houchin <jlhouchin(a)gmail.com> writes: > I am interested in learning to use Pier. I browsed the mailing list to > learn about current status and documentation. It seems to be pretty > quiet on the mailing lists. > > There seems to be some activity on Smalltalkhub on Pier3. Pillar, the document model and parser of Pier is alive. I need help but the project is definitely not dead as we use it for all books we are writing. The rest of Pier, mainly the web interface, looks rather dead for me as well. Why are you interested in Pier? We might help you find other projects that could suit your needs. -- Damien Cassou http://damiencassou.seasidehosting.st "Success is the ability to go from one failure to another without losing enthusiasm." --Winston Churchill

Sept. 22, 2015

Re: [Pharo-users] A keyboard controlled code editor, how difficult would that be?

by Stephan Eggermont

On 22-09-15 02:21, Peter UhnÃ¡k wrote: > Couple notes: > 1. The theme is not respected. (Also it's 2:15 AM here ;) Yep,a real hard-coded prototype. I'll at least pick up the text, focus and background colors. > 2. When method is reformatted, or code added the height doesn't change -- I > would expect it to adapt automatically Here is a workaround: <Esc> <Enter> <Enter> <Esc> :) And there are also no updates from system changes. Stephan

Sept. 22, 2015

Re: [Pharo-users] Exploring Pier

by HernÃ¡n Morales Durand

I don't know the answer but I am really interested to read it. HernÃ¡n 2015-09-21 18:44 GMT-03:00 Jimmie Houchin <jlhouchin(a)gmail.com>: > Hello, > > I am interested in learning to use Pier. I browsed the mailing list to > learn about current status and documentation. It seems to be pretty quiet > on the mailing lists. > > There seems to be some activity on Smalltalkhub on Pier3. > > I am interested to see how well supported Pier is (is going to be). > > And if Pier is still active in the community. Is there any current > documentation and where? > > Thanks for any help and opinions regarding Pier and its current and future > situation. > > Jimmie > >

Sept. 22, 2015

Re: [Pharo-users] Dr Geo: A point needs to be animated over a preexisting object?

by Offray Vladimir Luna CÃ¡rdenas

Hi again, My students (who are school teachers) and me are testing alternative approaches: they with geogebra and I with DrGeo. What I'm doing is something like this (please open the attached file). The points A, B, C, and D are data points taken from the real experiment. The ruler below with the big blue dot is for simulating the time. The dotted line is an ideal model of the movement and the big black dot is a mobile put on it. Now the idea is to bind the movement of the time (blue dot) to the movement of the mobile (black dot) so blue dot and black dot share the x coordinate. I will like to have two options: manual and automatic. In the first one the time ruler is handed by the user, in the second one is incremented by the computer without user intervention. Any pointer on how to start with this will be greatly appreciated (I have seen animation examples, but they seem far advanced compared to what we need). Cheers, Offray On 21/09/15 20:13, Offray Vladimir Luna CÃ¡rdenas wrote: > Hi, > > Here comes again. Sorry I send it from a wrong address. > > > -------- Forwarded Message -------- > Subject: Dr Geo: A point needs to be animated over a preexisting object? > Date: Mon, 21 Sep 2015 20:09:29 -0500 > From: Offray Vladimir Luna CÃ¡rdenas <offray.luna(a)mutabit.com> > To: Any question about pharo is welcome <pharo-users(a)lists.pharo.org> > > > > Hi, > > Some of my students are exploring modeling as a tool to understand > physical phenomena. In particular they're working on uniform movement. > The idea is to take data from a lab experiment on uniform movement and > plot it on a geometrical program and then use animation to reproduce > the lab movement inside the plotting to see if they can get the > analitycal expression which models the movement. The bridge between > experimental data and the analytical expression is animation as a way > to validate, reconstruct models. We're considering geogebra and DrGeo > for this. I'm more familiar with smalltalk that with javascript, but > the question we're facing is how to animate a point following a vector > direction but going beyond it. > > Considering the following figure: > > > > So the idea is that A, B, C and D are points in a position versus time > graph taken from the real lab experiment. "p" is a point which will > follow the trajectory of the vector "u", which has the same direction > of the segment that goes from A to B (it can be even overlapped) and > is animated describing the red trajectory going for p to p' (which has > the same x value of D, but a different y value). A way to do it will > be put and invisible line that passing from A to B (and beyond) and > make the point "p" move on it, but we're wondering if there is a way > to just give vector direction and magnitude and make the point move, > without creating an explicit line before. > > Seems that nor geogebra or DrGeo can deal with animating a free object > following a (vectorial described) trajectory. > Is this possible? > > Cheers, > > Offray > >

Sept. 22, 2015