On Wed, Feb 11, 2009 at 10:17 AM, Joao S. O. Bueno <gwid...@mpc.com.br> wrote:
> Hi,
> I am aware that it is a work in progress --
> just to let you know (Alexia and others) - the changes in the two commits
> dated 10-feb-2009 got things a lot worse and less natural for me than it was
> before.
> I am nto complainign, I know a lot of tunning is getting in, and I am writing
> this just for feedback while you adjust it.
> Now, I f I paint slowly, the brush will suddenly reverse its angle - Also, if
> I mark the direction x angle dynamic, the painting angle does nto feel
> natural, and it felt before - at least when I use a brush that is oriented
> towards "up" like an up arrow, or the letter "A"  - both behaviores were
> better previously.

This sounds like the interpolation is being done in the wrong
direction; The code needs to compare the angles and interpolate the
angle across the shortest path. ie 0 -> 90 shouldn't go backwards
359..270..180..90 but forwards 0..90; similar for 90 -> 0, etc.

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