Brush Angle: Direction Error

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gb_whisper
Beiträge: 52
Registriert: Do Mär 22, 2012 7:12 pm

Brush Angle: Direction Error

Beitragvon gb_whisper » Di Jul 03, 2012 6:28 pm

This problem is quite obvious when you use a flat brush shape (or any brush with low Shape value). To reproduce:

1) Set the Angle Expression to be Direction
2) Draw vertically with a slow or medium speed

The resulted brushstroke would look like this:
未标题-1.jpg


It can be seen that the brush Angle keeps changing between 0 degree and 90 degree for some reason. The Direction expression shouldn't work like this.

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I did another test to see how paint direction would trigger this problem:

未标题-2.jpg


It is clear that this problem only appears when drawing vertically.

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This test is to see how paint speed (with a digital tablet) would trigger this problem:

未标题-3.jpg


It can be seen that the slower the brush moves, the more often the problem appears. However, if use a mouse or touch pad instead, the probelm appears almost 100% regardless how fast the brush moves.

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Boris Eyrich
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Registriert: Mo Nov 01, 2004 2:59 pm
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Re: Brush Angle: Direction Error

Beitragvon Boris Eyrich » Mi Jul 04, 2012 9:54 am

This is caused by the latest change regarding a improved angle detection. I already aware of this issue and working on it.

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Boris Eyrich
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Re: Brush Angle: Direction Error

Beitragvon Boris Eyrich » Di Jul 10, 2012 8:00 am

Should be fixed now with the latest prerelease update (120709.8737).


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