[Devel] ftmulti bug ?

[James H. Cloos Jr.]

I'm seeing a staircase effect when browsing along the weight axis in
some fonts with ftmulti.

It seems to only affect the weight axis, and only on fonts with more
entries in /BlendDesignMap than in /BlendDesignPositions.

The abberations happen every place there is an entry /BlendDesignMap.

I looks like the interpolation is being done only between the nearest
design points (presumably as it should be) but the resulting blend is
not injective, as I presume it should be.

The fonts could be buggy, but I'll have to reboot into the notebook's
dreaded legacy software to test....  

I've tested in 2.0.9, 2.1.0 and HEAD's demos w/ VER-2-1-1-RC1's lib.
All gave the same results.

-JimC