On Fri, Aug 28, 2015 at 4:53 PM, Nigel Tao wrote:
After that, most changes should be mechanical, such as:
- truetype.Font.Kerning becomes truetype.Font.Kern.
- truetype.NoHinting becomes font.HintingNone.
- Some values (like a font scale and an advance width) changes from
int32 to fixed.Int26_6, a common type for sub-pixel measurements. (The
golang.org/x font packages can't depend on
- Similarly, raster.Point becomes fixed.Point26_6.
I forgot to mention that some scales have changed:

- A fixed.Point26_6 is, as its name suggests, a 26.6 fixed point. The
old raster.Point was 24.8, not 26.6. The rationale for the change is
at https://github.com/golang/go/issues/11906

- The maximum alpha value for a raster.Painter has changed from
1<<32-1 to 1<<16-1, to be consistent with the image/color package in
the standard library.

These are relatively low level concepts, so if you're changing from
the code.google.com version to the github.com version, you probably
won't notice the difference (for example, changing freetype.Pt(10, 10)
to fixed.P(10, 10) will work fine). But there is a difference.

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postedAug 28, '15 at 6:53a
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