Here the topic for the GPC Wrapper plugin (original name: GPC Plugin // Original topic: Плагин для операций с многоугольниками)

GPC is the General Polygon Clipper library developed by The University of Manchester (GPC site: http://www.cs.man.ac.uk/~toby/gpc/)

Plugin UI languages:

PLEASE REPORT IN THIS TOPIC ANY ISSUE.


Best regards,

w3b5urf3r

• requirements: SMath Studio from 0.96.4875 to 0.96.4884 or latest Nigthly build, .Net Framework 2.0;
  
• installation:
  - SMath Studio Stable: unzip and copy the GPC Wrapper.7z content inside the SMath plugins folder (f.e. C:\Program Files (x86)\SMath\SMath Studio\plugins);
  - SMath Studio Nigthly Build: download the plugin from the gallery;
  
• sources: if you want to see the plugin sources look in the SVN repository.
  
• languages: multilanguage UI is a work in progress.

UPDATES:

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GPC Test.7z (3 КиБ) скачан 130 раз(а).

I had installed a earlier GPC wrapper version with extended functions. Updating via extension manager created a crash. When I removed the old plugin directory, installation was flawless. However, I saw, that the extended functions were gone (and so were the error messages on startup due to missing
translations).

Could there be a stability problem with updating plugins, when the old version has functions that are not present in the new one? I could imagine that updating on the fly could lead to names pointing to nowhere and might cause a crash.

Wrote

I had installed a earlier GPC wrapper version with extended functions. Updating via extension manager created a crash. When I removed the old plugin directory, installation was flawless. However, I saw, that the extended functions were gone (and so were the error messages on startup due to missing
translations).

Could there be a stability problem with updating plugins, when the old version has functions that are not present in the new one? I could imagine that updating on the fly could lead to names pointing to nowhere and might cause a crash.

I don't understand... Have you updated an old GPC plugin with the latest on the gallery? Or do you have made some changes in the %APPDATA% folder using the Dropbox beta?

Wrote

I don't understand... Have you updated an old GPC plugin with the latest on the gallery? Or do you have made some changes in the %APPDATA% folder using the Dropbox beta?

I cannot reproduce the situation completely.

I had the dropbox version installed by manually exchanging the dll in the appdata plugin folder, which was created via extension manager.
The extension manager version was older than the current one, because yesterday the extension manager offered update (may have been there for quite a while,
This is based on the assumption, that the extension manager just compares the version numbers in the config files or subdir names in order to find out update candidates. Thus the extension manager would not be aware of alien dlls in the subdirs.

I just checked yesterday the online gallery). Also, the dropbox version was not the current one, because it caused error messages related to string translations.

When performing that offered update, the crash occured. After removing the complete directory and re-installing from extension manager, the error messages were gone as were the extended GPC functions.

I now revisited the dropbox files and again exchanged the dll manually. Now the extended functions are available including german translations (no more error messages).

I expect the crash to happen again, as soon the extension manager finds a new version and tries to update, except if the update contains all extended functions. In order to verify, you cound provide a dummy update. We would just check that updates can safely remove functions from plugins. This, however might be a very rare situation and not be worth the debugging effort.

Now I understand

The Extensions Manager is a feature "in progress", so something may be not implemented well (f.e. like in this case, external interferences )

Actually the way to avoid these issues is to delete the plugin folder from the %appdata% folder and then to use the SMath "plugin" folder to make the test; in this case the official plugin is not shown in the gallery, and SMath doesn't crashes


Davide

Hi Ioan,

Wrote

Do you means that this two plugin places are equal effect alternatives ?

C:\Program Files\SMath\SMath Studio\plugins
C:\Users\Ioan\AppData\Roaming\SMath\extensions\plugins

There are several differences, f.e. the 2nd is the "master" and the 1st is the "slave" when there are 2 plugins with the same guid... I use the first for development of plugins, the second for the regular use.

Wrote

In my mind, the second position is a regular Windows treatment, even I prefer the user control from the first alternative.

I agree with you

Wrote

Are they - the plugins - hidden also in a third place ? I feel - yes !?

I think not

The plugin GPC Wrapper seems it does not work with build 7219
(Could not find the "Void" method)



sergio

Thank you Sergio, I will look at it as soon as I can.

What about closing the polygon ?

Jean,
the plugin provided for the double chance (as can be seen in the upper left of my screenshot) but at the moment with the updated smath version (7219), does not work.

sergio

Wrote

The plugin GPC Wrapper seems it does not work with build 7219

Fixed for latest available Nightly Build (0.99.7250)