[Cuis-dev] Fix for VectorCanvas>>#image:at:

[Luciano Notarfrancesco]

Oh, that’s great, using subpixel antialiasing just solved the problem!
Thanks!

I’ll try NeoEuler. It would be nice to have fallback fonts too… some math
glyphs are missing in DejaVu… but it’s not a big deal. Another minor
aesthetic problem is that the syntax highlighter sometimes gets confused
with the output of printIt, perhaps would be better to not apply syntax
highlighting to the output, or to have the option to “lock” the output text
in some printOn: methods so that the syntax highlighter doesn’t change it
(perhaps a new attribute? not sure if this makes sense). Also sometimes the
underscores are not converted to arrows in a workspace, perhaps this is
related to the syntax highlighter getting confused.

Thanks!
Luciano

On Thu, 1 Jun 2023 at 17:42 Juan Vuletich <juan at cuis.st> wrote:

> Hi Luciano,
>
> On 5/30/2023 9:06 AM, Luciano Notarfrancesco via Cuis-dev wrote:
>
> BTW, in case anyone is curious, here is how matrices look when printing
> them on a workspace with cmd-p. I draw matrices over the binary field in a
> special way (first screenshot), and I scale them down if they are too big.
> I did this because it was hard to make matrices look good when printing
> them as text, so instead I draw them on a form and embed the form when
> printing them. I only do this with matrices, they are especially
> problematic when printing because they print with more than one line, they
> are the only objects in my system that need more than one line for
> printing. When I printed them as text with more than one line, printing a
> list of matrices (for example an array of matrices, as in the example where
> I print a basis of a vector space in the screenshots) they would look
> horrible. Now a list of matrices is printed in a single line as expected,
> and the point size of the enclosing parentheses is adjusted automatically
> (I have messages Stream>>#withParentheses:, #withBrackets:,
> #withAngleBrackets:, etc, that do this automatically).
>
>
> It looks beautiful!
>
> I still have two little problems that I might want to tweak:
> 1) the parentheses are too thick, setting the point size is not the right
> thing to do, maybe we need a new text attribute for scaling text without
> changing the point size?;
>
>
> The easiest solution is to use a different font, just for the parentheses.
> For example, NeoEuler parentheses are much lighter at large point sizes.
>
> 2) matrices inside matrices loose the transparent background, the
> background becomes black, as you see in the example in the second
> screenshot.
>
>
> I guess this should be fixable. If you can prepare an image with such
> example for me to play with, I'll give it a try. For example (not sure if
> related) VectorEngine can do blending over translucent backgrounds, but
> only if subpixel sampling is used. I know, there is no relation between
> these two features... But I wanted to keep options to a small number, and
> usually we only use cheaper whole pixel AA and cheaper alpha blending that
> can't blend over translucent backgrounds. So, maybe just using the SubPixel
> engine solves this problem, or I'll be happy to take a look.
>
>
> On Tue, May 30, 2023 at 7:27 PM Luciano Notarfrancesco <luchiano at gmail.com>
> wrote:
>
>> This change set fixes a little bug in VectorCanvas that cames up when
>> using the canvas to draw text with images on a form (outside morphic). I do
>> this to draw matrices, and when drawing a matrix whose coefficients are
>> also matrices this came up. The fix is simply checking that the world is
>> not nil.
>>
>
> Integrated and at GitHub. Thanks!
>
> Cheers,
>
> --
> Juan Vuletichcuis.stgithub.com/jvuletichresearchgate.net/profile/Juan-Vuletichindependent.academia.edu/JuanVuletichpatents.justia.com/inventor/juan-manuel-vuletichlinkedin.com/in/juan-vuletich-75611b3twitter.com/JuanVuletich
>
>
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