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Ever since cavemen were using sticks and their berry juice to draw with, men has used a stylus based instrument in their hand to communicate and express themselves to the world, and in talking about the notion of using the hand and a stylus to communicate, you can really breakdown the motions with the hand, wrist, and arm make into six basic motions. And I'm going to go through those with you and then explain how they relate to the Wacom tablets and how Painter then takes advantage of them.
So I'm just using a piece of paper here at this point but it can stand in for the tablets as well. You have got a flat two dimensional surface and when you start to draw on a 2D surface, well any one of the places on this tablet can be described in an x and y fashion. So you've basically got a two- dimensional grid here that represents the first two axis of motion, the x and y motion that happens on a 2D surface. Then when you get to the third dimension, you can describe the actual sense of depth and really what we're not dealing with physical depth here as much as we're talking about pressure. The pen can sense varying pressure from very light to very dark.
So, we are now up to the three axis of motion and those are all communicated through the tablet set to the software, in this case Painter, which takes advantage of that information. Well, the next thing you can do is you can start to talk about if I have the pen or my pencil in this case setting perpendicular to the face of the tablet or the paper in this case, I can now start to tilt this and that is Tilt. And that can be measured as an angle based on where it is when it is perpendicular.
So, now we have got tilt information as well as x, y and z. And if you have got tilt, well now I can describe a circle 360-degree sweep and that is Bearing. So, now we are up to five axes of motion and with that Bearing and Tilt, anything I do within Tilt and Bearing is the combination of angels that can be described. Finally, we get to the sixth and the most recent attribute of motion that the Wacom tablets are now able to capture and that is Rotation, Barrel Rotation.
And it is important especially with tools that have shape like a brush for example. This brush has a narrow and a wide aspect to it. So when I'm painting with this and rotating that Barrel this is going to have a great deal of impact on the stroke that's being made. So, artists are using the expressive qualities that their hands impart to this tool through all of these combinations of axis of motion. So, to wind up here you've basically got the six axis of motion that incapsulate all of the movements that are possible between the artist's hand, wrist and arm.
So, all of these are captured and sent to the software which takes advantage of it and the whole idea of all of this is basically that the artist is taking what's in here and utilizing all of these motions to express what out there.
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