Need help with user testing: brush rotation changed to work with pressure in range -180...180

[dkazakov]

Hi, @AhabGreybeard!

Sorry for not replying for a long time, I was a bit busy in another thread

@AhabGreybeard

I have noticed that the Curves calculation modes all seem to do the same thing, which is Multiply.

For Drawing Angle and Rotation sensors it is okay. They work in their own “Absolute Additive” mode, which is not controlled by these switches. Perhaps we should just disable them for this sensor… I’ll check if it can be done easily.

@AhabGreybeard

Here is an image that illustrates how Drawing Angle gives different results depending on whether it’s controlling size or opacity instead of hue.

The image looks at least consistent

When Hue, Size and Opacity are controlled by Drawing Angle, then zero hue offset is at the bottom of the circle in all three images. Which is consistent.

When Size and Opacity are controlled by Distance, then the curve is mapped to range 0…1. When Hue is controlled by distance, then the curve is mapped to rance -180…+180. Therefore zero-hue-offset point is in the middle of the stroke. Which is at least consistent with what we show in the GUI.

Perhaps we should allow somehow allow change the range of the curve? Perhaps using those multiply/addition boxes? (though that should be the topic for another patch I guess)