Re: [pygame] freetype + unusual font format: What am I doing wrong?

[Lenard Lindstrom <len-l@xxxxxxxxx>]

Okay, setting the resolution to 45 corrects the sizes:

pygame.freetype.init(resolution=45)

Python 2.7.3
pygame 1.9.2a0
pygame.freetype 2.4.10
radon.bdf 12
radon.bdf 13
radon-wide.bdf 12
radon-wide.bdf 13
c64.bdf 8
c64d.bdf 16

I don't know why this is the case. Explicit bitmap font support is not 
built into the freetype module, so is untested.  It is something I 
intended, but have not got around too. Sorry.

Lenard Lindstrom.

On 13-10-05 03:07 PM, Lenard Lindstrom wrote:
> Hi,
>
> I don't know what exactly you are looking for. The BDF fonts are 
> bitmap fonts, so do not scale. Each font supports only a few specifc 
> sizes.
>
> Freetype works in point size, which is not pixel size. Point size is 
> supposed to represent the size as viewed. By default it assumes there 
> are 72 points to an inch. So a point size of 10 should give around 7 
> characters per inch. However, the pitch value of 72 points per inch is 
> a builtin constant; it is not calculated from the actual screen 
> resolution. So actual font size will vary with the monitor used.
>
> The freetype version of pygame.font.init() is just 
> pygame.freetype.init(). It takes a 'resolution' keyword argument that 
> sets the default pitch used in rendering. I suppose setting the pitch 
> to the screen resolution, in pixels per inch, makes the point size 
> equal pixel size. The pygame.freetype.Font type allows pitch to be set 
> individually for each Font instance. It is this pitch twiddling which 
> allows pygame.freetype.Font to mimic how pygame.font.Font handles the 
> default Pygame font, which is scaled differently from other fonts.
>
> Lenard Lindstom
>
> On 13-10-05 01:48 PM, Jason Marshall wrote:
> > Maybe my understanding of size is wrong...
> > http://www.freetype.org/freetype2/docs/ft2faq.html#other-size
> >
> > ------------------------------------------------------------------------
> > *From:* Jason Marshall <jmm0@xxxxxxxxx>
> > *To:* "pygame-users@xxxxxxxx" <pygame-users@xxxxxxxx>
> > *Sent:* Saturday, October 5, 2013 2:41 PM
> > *Subject:* Re: [pygame] freetype + unusual font format: What am I 
> > doing wrong?
> >
> > Lenard,
> >
> > Sorry, updating to pygame-1.9.2a0-12de2da43ecb.win32-py3.3.msi didn't 
> > help.
> >
> > By passing a different (wrong) size, I was able to get freetype to 
> > render some fonts but not others. I made a webpage with the only 
> > documentation that I have found, some demo code that can render from 
> > some BDF fonts, and a screenshot:
> > http://www.marshallworkshop.com/pygame/freetype-bug/
> >
> > I suspect that there's a mistake in the documentation for 
> > instantiating the pygame.freetype.Font class. If I follow the 
> > documentation and pass it the font name, style and size, I get an 
> > error.  If I just pass only the font name and a certain (wrong) size, 
> > it sometimes renders.
> >
> > Jason
> >
> >
> > ------------------------------------------------------------------------
> > *From:* Lenard Lindstrom <len-l@xxxxxxxxx>
> > *To:* pygame-users@xxxxxxxx
> > *Sent:* Friday, October 4, 2013 1:21 PM
> > *Subject:* Re: [pygame] freetype + unusual font format: What am I 
> > doing wrong?
> >
> > Hi Jason,
> >
> > This sounds like issue #144, unable to render text.
> > <https://bitbucket.org/pygame/pygame/issue/144/unable-to-render-text>
> > The issue #144 fix is included in an updated 32bit Windows installer
> > added to the downloads page
> > <https://bitbucket.org/pygame/pygame/issue/144/unable-to-render-text>
> > earlier this week: pygame-1.9.2a0-12de2da43ecb.win32-py3.3.msi
> > <https://bitbucket.org/pygame/pygame/downloads/pygame-1.9.2a0-12de2da43ecb.win32-py3.3.msi>. 
> >
> > I have taken to adding a changeset identifier to the file name so
> > tracking installer versions will be easer.
> >
> > Lenard Lindstrom
> >
> > On 13-10-04 05:50 AM, Jason Marshall wrote:
> > > I would like to use the freetype module to render text from a BDF font
> > > file, but I am getting a vague error. I am using the 8x8 font from
> > > this site:
> > > http://beej.us/c64bdf/c64bdf/c64.bdf
> > >
> > > >>>import os
> > > >>>os.environ["PYGAME_FREETYPE"] = "1"
> > > >>>import pygame
> > > >>> pygame.font
> > > <module 'pygame.ftfont' from
> > > 'C:\\Python33\\lib\\site-packages\\pygame\\ftfont.py'>
> > > >>> import pygame.freetype
> > > >>> pygame.freetype.init()
> > > >>> c64 = 
> > pygame.freetype.Font(r'C:\Users\marshalls\Downloads\c64.bdf', 8)
> > > >>> s = c64.render('TEST', pygame.Color('white'), 
> > pygame.Color('blue'))
> > > Traceback (most recent call last):
> > >  File "<stdin>", line 1, in <module>
> > > SystemError: error return without exception set
> > > >>>
> > >
> > > Can somebody spot what I am doing wrong?
> > >
> > > I am using a recent build of pygame 1.9.2pre and Python 3.3 (32-bit)
> > > on Windows.
> > >
> > > Thanks,
> > > Jason