Beginners May 2007

beginners@lists.squeakfoundation.org

52 participants
48 discussions

Squeasource.com project access right
by Hilaire Fernandes 04 May '07

04 May '07

Within *one* Squeaksource project, it is possible to have different class packages. Is it possible to assign different access right rule to these packages? I only found how to assign globally the access right rule to the whole squeaksource project. Hilaire

2 5

[Newbies]Imagesfiles in Squeak
by Rob Van Pamel 04 May '07

04 May '07

Hello If i want to use some images to embed them into my application. (Form fromFileNamed: 'test.jpg') asMorph openInWorld This works, but how can I specify that he searches in a subdirectory. I don't want to use an absolute path but a relative path. Thanx in advantage Rob Van Pamel

3 4

PolygonMorph intersection
by Jerome Peace 04 May '07

04 May '07

PolygonMorph intersection Hi Sudheendra Hangal, You can work with the morphs shadows. First pass, check if the boundries intersect. If they don't then your done. Else get a form the size of the boundry intersection. In it draw the shadows of each morph s.t. only the double shadow shows. Then check to see if the form is all white. If it is not then the morphs intersect. Obviously if one morph is a rectangle you just have to see if the others shadow falls on the boundry. To track down how to do this in a workspace type shadowForm select it and type Cmd-m (for implementers) This will give you a browser with all the definitions of the method in the system. You might be interested in looking at the code I wrote for puzzleboards: http://209.143.91.36/super/634 Puzzleboards The index to that and other pieces of code are at: http://209.143.91.36/super/637 Goodies from Jerome Peace The site is bob's superswiki. I haven't look at that code recently so let me know if it works or if you have problems. I am pretty sure the project won't be loadable. Too much has changed and projects are very sensitive. The changeset is what I think I was claiming would work in 3.8 and 3.9. Let me know how you get on. Yours in curiosity and service, --Jerome Peace *** > > Thanks, Jerome - have filed the issue in Mantis. > > I'm looking for the easiest way to figure out if > polygon A is contained > inside polygon B. > > One way to do this is by checking if polygon A > intersects any segments of B > and any one of A's vertices lies inside B. > is there a better way ? > > Thanks, > > -sgh *** __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

1 0

Re: PolygonMorph intersection
by S Hangal 03 May '07

03 May '07

Thanks, Jerome - have filed the issue in Mantis. I'm looking for the easiest way to figure out if polygon A is contained inside polygon B. One way to do this is by checking if polygon A intersects any segments of B and any one of A's vertices lies inside B. is there a better way ? Thanks, -sgh > Date: Wed, 2 May 2007 21:48:23 -0700 (PDT) > From: Jerome Peace <peace_the_dreamer(a)yahoo.com> > Subject: [Newbies] Re: PolygonMorph intersection > To: "beginners(a)lists.squeakfoundation.org" > <beginners(a)lists.squeakfoundation.org> > Message-ID: <437189.72874.qm(a)web50310.mail.re2.yahoo.com> > Content-Type: text/plain; charset=iso-8859-1 > > PolygonMorph intersection > > > Hi Sudheendra Hangal, > > You have actually found a very good bug. > > In investigating I found that the method for Polygon > did not exist in 3.8. > > The author of the version in 3.9 is > > nk 4/27/2003 16:15 PolygonMorph intersects: {geometry} > > nk is Ned Konz who created the connector package. > > In building the 3.9 release the release team added > pieces of the the Connectors package. > And while they did as best they could they missed a > piece. > > The PolygonMorph>>intersects: methods calls super > intersects: . None of the classes above PolygonMorph > defines the intersects: method. Thus the error > message. > > Simply finding the bug make you a winner in what I > call the Game of Mantis. > > see: > http://wiki.squeak.org/squeak/5915 > Game of Mantis > > The best place for this info would be to start a > Mantis report. > (You can get a mantis acct freely and easily). > > A good place to start is: > > http://bugs.squeak.org/my_view_page.php > > Mantis provides a patient persistent way to focus on > an issue. > I use it to accumulate data on a problem until a > solution can be found. > It provides a place to: > > * alert the community to a problem; > * accumulate facts and clues from the analysis; > * publish preposed solutions and get feedback; > * get solutions harvested and included into the main > stream. > > The above is from: > http://wiki.squeak.org/squeak/5912 > Mantis FAQ and Tips > > Again thanks for your sharp eyes and easy to follow > recipe for the bug. > > Yours in curiosity and service, --Jerome Peace > > > >

2 1

Re: PolygonMorph intersection
by Jerome Peace 03 May '07

03 May '07

PolygonMorph intersection Hi Sudheendra Hangal, You have actually found a very good bug. In investigating I found that the method for Polygon did not exist in 3.8. The author of the version in 3.9 is nk 4/27/2003 16:15 PolygonMorph intersects: {geometry} nk is Ned Konz who created the connector package. In building the 3.9 release the release team added pieces of the the Connectors package. And while they did as best they could they missed a piece. The PolygonMorph>>intersects: methods calls super intersects: . None of the classes above PolygonMorph defines the intersects: method. Thus the error message. Simply finding the bug make you a winner in what I call the Game of Mantis. see: http://wiki.squeak.org/squeak/5915 Game of Mantis The best place for this info would be to start a Mantis report. (You can get a mantis acct freely and easily). A good place to start is: http://bugs.squeak.org/my_view_page.php Mantis provides a patient persistent way to focus on an issue. I use it to accumulate data on a problem until a solution can be found. It provides a place to: * alert the community to a problem; * accumulate facts and clues from the analysis; * publish preposed solutions and get feedback; * get solutions harvested and included into the main stream. The above is from: http://wiki.squeak.org/squeak/5912 Mantis FAQ and Tips Again thanks for your sharp eyes and easy to follow recipe for the bug. Yours in curiosity and service, --Jerome Peace *** > > > > [Newbies] Fwd: PolygonMorph intersection > Sudheendra Hangal hangal at cs.stanford.edu > Wed May 2 11:06:56 UTC 2007 > > Hello, > I am using Squeak-3.9-final-7067.image on win-xp. > > I create a polygon using: > p := PolygonMorph new. > p vertices: {0 at 0. 0 at 200. 200 at 200} color: Color > black borderWidth: 2 > borderColor: Color green. > > My original goal is to check if a line segment L is > completely contained > within this polygon p. Since the System browser shows > that PolygonMorph has > an intersects: aRectangle message, I thought I would > create a rectangle with > the original and corner as the end points of L and use > it to query > intersects. > > However any attempt to use the intersects: aRectangle > method in > PolygonMorph, e.g. > > r := Rectangle new. > r setOrigin: 150 at 0 corner: 175 at 25. > p intersects: r > returns a message not understood. > > Am I doing something fundamentally wrong ? > > I can probably work around, but I would like to know > why a method documented > in > the system browser does not work as expected. > thanks, > > sgh *** __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

1 0

PolygonMorph intersection
by S Hangal 02 May '07

02 May '07

Hello, I am using Squeak-3.9-final-7067.image on win-xp. I create a polygon using: p := PolygonMorph new. p vertices: {0@0. 0@200. 200@200} color: Color black borderWidth: 2 borderColor: Color green. My original goal is to check if a line segment L is completely contained within this polygon p. Since the System browser shows that PolygonMorph has an intersects: aRectangle message, I thought I would create a rectangle with the original and corner as the end points of L and use it to query intersects. However any attempt to use the intersects: aRectangle method in PolygonMorph, e.g. r := Rectangle new. r setOrigin: 150@0 corner: 175@25. p intersects: r returns a message not understood. Am I doing something fundamentally wrong ? I can probably work around, but I would like to know why a method documented in the system browser does not work as expected. thanks, sgh

3 2

Testing for message excistance
by Mispunt 01 May '07

01 May '07

Hi people, I there a way to run a test to be sure that a message exists in a class? I am working on some peace of code that just run a message of a unknown class, so it is possible that this message doesn't exist and fire an error. Greetings, Mispunt

3 3

saving image automatically
by Norbert Hartl 01 May '07

01 May '07

Hi, I'm trying to save an image under a different name. I have a image I'm working with (e.g. VNC enabled) and I like to create a derived image under a different name. I use MySetup>>deploy RFBServer doStopServer. SmalltalkImage current closeSourceFiles. SmalltalkImage current saveChangesInFileNamed: 'base-deploy.changes'. SmalltalkImage current saveImageInFileNamed: 'base-deploy.image'. SmalltalkImage current snapshot: false andQuit: true I can still use my working image but if I try to start the base-deploy.image it quits immediately. I tried different settings but the result is similar. Every time I save and quit the image from a method or a doit I get this result. But if I just use SmalltalkImage current snapshot: true andQuit: true in the workspace everything is fine. Norbert

3 6

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

Beginners May 2007