> Also I am wondering about a little drawing issue I have - I want to scale a > freetype bitmap up and draw a larger version of it (useful for illustrations > for rasterization issues...) but it seems that cairo always anti-alias the > edges at the original resolution, and I haven't figured out how to turn it > off yet. > Let's say, I have rendered a glyph to a 24x24 grid in FreeType, and want to > draw that in cairo to 480 x 480 . I'd like cairo to render at the destination > resolution - i.e. do whatever at the 1-pixel boundary in 480x480, but it > seems that it is doing it in the original grid, which blows up to be extra > blurry at ~20 pixels wide in 480x480. Here is how it looks (the corner S is > original resolution drawn as is): > > http://htl10.users.sourceforge.net/tmp/S.png > > This is from a word-in-progress rewrite of freetype-py's > glyph-alpha/glyph-monochrome examples which uses numpy and matplotlib, to > using pycairo for drawing.
Possibly you want to do cairo_patter_set_filter(source, CAIRO_FILTER_BEST) or CAIRO_FILTER_NEAREST (the difference is that BEST will actually antialias the boundaries between the pixels which looks nicer if the image is rotated or scaled by a non-integer). _______________________________________________ Freetype-devel mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/freetype-devel
