[Cuis-dev] [Ann] Changes for VectorGraphics

Juan Vuletich juan at jvuletich.org
Sun Aug 9 06:39:09 PDT 2020

Hi Hilaire,

On 8/8/2020 4:17 PM, Hilaire Fernandes via Cuis-dev wrote:
> Le 07/08/2020 à 02:38, Juan Vuletich via Cuis-dev a écrit :
>>> - Looking at Clock morph source, it looks you can make your origin 
>>> point whatever you want, is it that ?
>> Yep. Today 0 at 0 is the center of rotation, but we could make that more 
>> flexible.
> I wrongly expressed myself. Look at the drawOn: method of ClocklMorph, 
> I understand line drawing starting at 0 at 0 is the center of the morph 
> area. While it isued to be at the top left corner of the morph area.

Yes and no. The good part is that the area is defined by the morph 
itself. Consider this example:

Morph subclass: #BezierExample01
     instanceVariableNames: ''
     classVariableNames: ''
     poolDictionaries: ''
     category: 'VectorGraphics-Experiments'!

drawOn: aCanvas
     aCanvas strokeWidth: 40 color: (Color black alpha: 0.7) do: [
         aCanvas cubicBezier: {-100 at 50. 150 at 300. 300 at 400. 300 at 100} ]

That's all it is needed! Try it. The morph, in its @drawOn: method, 
decides what space it uses. The position of 0 at 0 is a consequence of 
where the morph decides to draw itself in its own coordinate system. The 
framework handles all damage repair and coordinates conversions for you.

>>> - With my Polygon Morph, I still have the same issue I described in 
>>> my previous sources (see attached cs)
>> Oh, yes. Now I got it. Fixed too.
> Did you commit? Because the issue is still there.

Cuis will not modify any code without you telling it to. So you need to 
load all the updated code in your image.

Be sure to:
- Pull the repo
- Install all the numbered updates to the base image (World / Changes / 
Install New Updates is usually enough, but if your folder structure is 
not the recommended in the docs, I can't be sure all updates will be 
loaded. Same if changes you made to your image modify this behavior)
- Re install any packages that might have changed. VectorGraphics is now 
at v1.169. You can check this near the start of the 
VectorGraphics.pock.st file (it is human legible text in standard chunk 
format). To see what version you have loaded, World / Open / Installed 
Packages. The way to reinstall a package is to point at it in the 
FileList, and  click on [Install Package].

Hope this helps.

> Hilaire
> -- 
> GNU Dr. Geo
> http://drgeo.eu


Juan Vuletich

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