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🕸Fergus Duniho wrote on Sat, Dec 14 02:04 PM UTC in reply to H. G. Muller from 07:19 AM:

You lost me. What is this 'font size' you are referring to?

Ultimate Paint, Paint.net, and Inkscape all have the feature of letting me enter text in a specific font and size.

Is this because you have the orthodox set as font (TTF), and try to produce other images as individual .svg files?

Yes

Font sizes are typically referred to in 'point' units, which is not the same as pixels.

By taking a screenshot with Ultimate Paint and doing some comparisons, I determined that Ultimate Paint does measure font size in points. Using the same screenshot with Paint.net, I determined that it also measures it in points. So when I'm referring to a 37 font size or a 40 font size, I mean 37pt and 40pt, which explains why I could not use font sizes closer to 50 for something that should fit within a 50x50 area. Inkscape gave me the choice of units, and I chose pixels. So, when I was using a font size of 1000 in a 1000x1000 image, I meant 1000 pixels.

I don't know how the various point sizes correspont to pixels; this must be glyph-dependent, at least for the width in proportional fonts.

Looking into the conversion from points to pixels, I have found out that a point is 4/3 of a pixel. So, the 40pt size I've been using is a 53 1/3 pixel size, and 37pt is a 49 1/3 pixel size. This would explain why the SVGs with a font size matching their height and width have a 37pt font size when reduced to 50x50. Without bearing this in mind, all I originally did was confirm that all the characters I was using in the Chess Magnetic font were smaller than 50x50 at a font size of 40.

SVG images have an intrinsic size, but it is often ignored by the software rendering it. I think the Alfaerie SVGs are 2048x2048, but including them as image on a HTML page without size instructions renders them as 150x150.

In my experience, a browser will try to try to draw them at full size when there are no size instructions.

In making the Magnetic and Motif SVGs I started from individual SVG images from the GitHub pychess repository, not from the font.

As the first person to make Magnetic and Motif piece images for use in games, I used the font, and when I made new ones, I still used the font. In making SVGs, I painted over all the outlines and inner areas, then used a text editor to delete reference to the font, as keeping the font reference was causing some issues.


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