[Magick-bugs] SVG font-size bug (resolution)

[Thomas.Stegemann at materna.de]

Hello,

in svg with resolutions other than 72.0 dpi text is transformed twice:

In RenderFreetype FT_Vector_Transform and FT_Glyph_Transform is called.
In FT_Glyph_Transform FT_Vector_Transform is called, too.

When I remove the call of FT_Vector_Transform in RenderFreetype the text is rendered as expected.


file: magick\annotate.c
function: RenderFreetype
>    FT_Vector_Transform(&glyph.origin,&affine);
>    (void) FT_Glyph_Transform(glyph.image,&affine,&glyph.origin);

file: ttf\src\base\ftglyph.c:
function:  FT_Glyph_Transform
>          FT_Vector_Transform( &glyph->advance, matrix );


Can you check that?

Best regards 
Thomas Stegemann



> 
> the SVG just contains two lines of text:
> 
> <?xml version="1.0" encoding="ISO-8859-1"  standalone="no"?>
> <svg encoding="ISO-8859-1"  width="82.55mm" height="203mm" 
> text-rendering="optimizeLegibility">
> <text x="0mm" y="10mm" style="font-size: 16.0pt">Line 1</text>
> <text x="0mm" y="20mm" style="font-size: 16.0pt">Line 2</text>
> </svg>
> 
> with the command 
> > convert -density 72 c:\test.svg c:\test_72.jpg
> I get the two lines of text as expected.
> 
> with the command 
> > convert -density 200 c:\test.svg c:\test_200.jpg
> I get the two lines but the characters are bigger than 
> expected. The two lines overlap.
> 
> with the command 
> > convert -density 36 c:\test.svg c:\test_36.jpg
> I get the two lines but the characters are smaller than expected.
>  
> 
>